diff --git a/api/cosmos/gov/v1/gov.pulsar.go b/api/cosmos/gov/v1/gov.pulsar.go
index ac16e4d02aff..0854c35199d2 100644
--- a/api/cosmos/gov/v1/gov.pulsar.go
+++ b/api/cosmos/gov/v1/gov.pulsar.go
@@ -5644,49 +5644,49 @@ func (x *_Params_12_list) IsValid() bool {
 	return x.list != nil
 }
 
-var _ protoreflect.List = (*_Params_17_list)(nil)
+var _ protoreflect.List = (*_Params_18_list)(nil)
 
-type _Params_17_list struct {
+type _Params_18_list struct {
 	list *[]string
 }
 
-func (x *_Params_17_list) Len() int {
+func (x *_Params_18_list) Len() int {
 	if x.list == nil {
 		return 0
 	}
 	return len(*x.list)
 }
 
-func (x *_Params_17_list) Get(i int) protoreflect.Value {
+func (x *_Params_18_list) Get(i int) protoreflect.Value {
 	return protoreflect.ValueOfString((*x.list)[i])
 }
 
-func (x *_Params_17_list) Set(i int, value protoreflect.Value) {
+func (x *_Params_18_list) Set(i int, value protoreflect.Value) {
 	valueUnwrapped := value.String()
 	concreteValue := valueUnwrapped
 	(*x.list)[i] = concreteValue
 }
 
-func (x *_Params_17_list) Append(value protoreflect.Value) {
+func (x *_Params_18_list) Append(value protoreflect.Value) {
 	valueUnwrapped := value.String()
 	concreteValue := valueUnwrapped
 	*x.list = append(*x.list, concreteValue)
 }
 
-func (x *_Params_17_list) AppendMutable() protoreflect.Value {
+func (x *_Params_18_list) AppendMutable() protoreflect.Value {
 	panic(fmt.Errorf("AppendMutable can not be called on message Params at list field OptimisticAuthorizedAddresses as it is not of Message kind"))
 }
 
-func (x *_Params_17_list) Truncate(n int) {
+func (x *_Params_18_list) Truncate(n int) {
 	*x.list = (*x.list)[:n]
 }
 
-func (x *_Params_17_list) NewElement() protoreflect.Value {
+func (x *_Params_18_list) NewElement() protoreflect.Value {
 	v := ""
 	return protoreflect.ValueOfString(v)
 }
 
-func (x *_Params_17_list) IsValid() bool {
+func (x *_Params_18_list) IsValid() bool {
 	return x.list != nil
 }
 
@@ -5708,6 +5708,7 @@ var (
 	fd_Params_burn_proposal_deposit_prevote   protoreflect.FieldDescriptor
 	fd_Params_burn_vote_veto                  protoreflect.FieldDescriptor
 	fd_Params_min_deposit_ratio               protoreflect.FieldDescriptor
+	fd_Params_proposal_cancel_max_period      protoreflect.FieldDescriptor
 	fd_Params_optimistic_authorized_addresses protoreflect.FieldDescriptor
 	fd_Params_optimistic_rejected_threshold   protoreflect.FieldDescriptor
 )
@@ -5731,6 +5732,7 @@ func init() {
 	fd_Params_burn_proposal_deposit_prevote = md_Params.Fields().ByName("burn_proposal_deposit_prevote")
 	fd_Params_burn_vote_veto = md_Params.Fields().ByName("burn_vote_veto")
 	fd_Params_min_deposit_ratio = md_Params.Fields().ByName("min_deposit_ratio")
+	fd_Params_proposal_cancel_max_period = md_Params.Fields().ByName("proposal_cancel_max_period")
 	fd_Params_optimistic_authorized_addresses = md_Params.Fields().ByName("optimistic_authorized_addresses")
 	fd_Params_optimistic_rejected_threshold = md_Params.Fields().ByName("optimistic_rejected_threshold")
 }
@@ -5896,8 +5898,14 @@ func (x *fastReflection_Params) Range(f func(protoreflect.FieldDescriptor, proto
 			return
 		}
 	}
+	if x.ProposalCancelMaxPeriod != "" {
+		value := protoreflect.ValueOfString(x.ProposalCancelMaxPeriod)
+		if !f(fd_Params_proposal_cancel_max_period, value) {
+			return
+		}
+	}
 	if len(x.OptimisticAuthorizedAddresses) != 0 {
-		value := protoreflect.ValueOfList(&_Params_17_list{list: &x.OptimisticAuthorizedAddresses})
+		value := protoreflect.ValueOfList(&_Params_18_list{list: &x.OptimisticAuthorizedAddresses})
 		if !f(fd_Params_optimistic_authorized_addresses, value) {
 			return
 		}
@@ -5955,6 +5963,8 @@ func (x *fastReflection_Params) Has(fd protoreflect.FieldDescriptor) bool {
 		return x.BurnVoteVeto != false
 	case "cosmos.gov.v1.Params.min_deposit_ratio":
 		return x.MinDepositRatio != ""
+	case "cosmos.gov.v1.Params.proposal_cancel_max_period":
+		return x.ProposalCancelMaxPeriod != ""
 	case "cosmos.gov.v1.Params.optimistic_authorized_addresses":
 		return len(x.OptimisticAuthorizedAddresses) != 0
 	case "cosmos.gov.v1.Params.optimistic_rejected_threshold":
@@ -6007,6 +6017,8 @@ func (x *fastReflection_Params) Clear(fd protoreflect.FieldDescriptor) {
 		x.BurnVoteVeto = false
 	case "cosmos.gov.v1.Params.min_deposit_ratio":
 		x.MinDepositRatio = ""
+	case "cosmos.gov.v1.Params.proposal_cancel_max_period":
+		x.ProposalCancelMaxPeriod = ""
 	case "cosmos.gov.v1.Params.optimistic_authorized_addresses":
 		x.OptimisticAuthorizedAddresses = nil
 	case "cosmos.gov.v1.Params.optimistic_rejected_threshold":
@@ -6081,11 +6093,14 @@ func (x *fastReflection_Params) Get(descriptor protoreflect.FieldDescriptor) pro
 	case "cosmos.gov.v1.Params.min_deposit_ratio":
 		value := x.MinDepositRatio
 		return protoreflect.ValueOfString(value)
+	case "cosmos.gov.v1.Params.proposal_cancel_max_period":
+		value := x.ProposalCancelMaxPeriod
+		return protoreflect.ValueOfString(value)
 	case "cosmos.gov.v1.Params.optimistic_authorized_addresses":
 		if len(x.OptimisticAuthorizedAddresses) == 0 {
-			return protoreflect.ValueOfList(&_Params_17_list{})
+			return protoreflect.ValueOfList(&_Params_18_list{})
 		}
-		listValue := &_Params_17_list{list: &x.OptimisticAuthorizedAddresses}
+		listValue := &_Params_18_list{list: &x.OptimisticAuthorizedAddresses}
 		return protoreflect.ValueOfList(listValue)
 	case "cosmos.gov.v1.Params.optimistic_rejected_threshold":
 		value := x.OptimisticRejectedThreshold
@@ -6146,9 +6161,11 @@ func (x *fastReflection_Params) Set(fd protoreflect.FieldDescriptor, value proto
 		x.BurnVoteVeto = value.Bool()
 	case "cosmos.gov.v1.Params.min_deposit_ratio":
 		x.MinDepositRatio = value.Interface().(string)
+	case "cosmos.gov.v1.Params.proposal_cancel_max_period":
+		x.ProposalCancelMaxPeriod = value.Interface().(string)
 	case "cosmos.gov.v1.Params.optimistic_authorized_addresses":
 		lv := value.List()
-		clv := lv.(*_Params_17_list)
+		clv := lv.(*_Params_18_list)
 		x.OptimisticAuthorizedAddresses = *clv.list
 	case "cosmos.gov.v1.Params.optimistic_rejected_threshold":
 		x.OptimisticRejectedThreshold = value.Interface().(string)
@@ -6203,7 +6220,7 @@ func (x *fastReflection_Params) Mutable(fd protoreflect.FieldDescriptor) protore
 		if x.OptimisticAuthorizedAddresses == nil {
 			x.OptimisticAuthorizedAddresses = []string{}
 		}
-		value := &_Params_17_list{list: &x.OptimisticAuthorizedAddresses}
+		value := &_Params_18_list{list: &x.OptimisticAuthorizedAddresses}
 		return protoreflect.ValueOfList(value)
 	case "cosmos.gov.v1.Params.quorum":
 		panic(fmt.Errorf("field quorum of message cosmos.gov.v1.Params is not mutable"))
@@ -6227,6 +6244,8 @@ func (x *fastReflection_Params) Mutable(fd protoreflect.FieldDescriptor) protore
 		panic(fmt.Errorf("field burn_vote_veto of message cosmos.gov.v1.Params is not mutable"))
 	case "cosmos.gov.v1.Params.min_deposit_ratio":
 		panic(fmt.Errorf("field min_deposit_ratio of message cosmos.gov.v1.Params is not mutable"))
+	case "cosmos.gov.v1.Params.proposal_cancel_max_period":
+		panic(fmt.Errorf("field proposal_cancel_max_period of message cosmos.gov.v1.Params is not mutable"))
 	case "cosmos.gov.v1.Params.optimistic_rejected_threshold":
 		panic(fmt.Errorf("field optimistic_rejected_threshold of message cosmos.gov.v1.Params is not mutable"))
 	default:
@@ -6279,9 +6298,11 @@ func (x *fastReflection_Params) NewField(fd protoreflect.FieldDescriptor) protor
 		return protoreflect.ValueOfBool(false)
 	case "cosmos.gov.v1.Params.min_deposit_ratio":
 		return protoreflect.ValueOfString("")
+	case "cosmos.gov.v1.Params.proposal_cancel_max_period":
+		return protoreflect.ValueOfString("")
 	case "cosmos.gov.v1.Params.optimistic_authorized_addresses":
 		list := []string{}
-		return protoreflect.ValueOfList(&_Params_17_list{list: &list})
+		return protoreflect.ValueOfList(&_Params_18_list{list: &list})
 	case "cosmos.gov.v1.Params.optimistic_rejected_threshold":
 		return protoreflect.ValueOfString("")
 	default:
@@ -6418,6 +6439,10 @@ func (x *fastReflection_Params) ProtoMethods() *protoiface.Methods {
 		if l > 0 {
 			n += 2 + l + runtime.Sov(uint64(l))
 		}
+		l = len(x.ProposalCancelMaxPeriod)
+		if l > 0 {
+			n += 2 + l + runtime.Sov(uint64(l))
+		}
 		if len(x.OptimisticAuthorizedAddresses) > 0 {
 			for _, s := range x.OptimisticAuthorizedAddresses {
 				l = len(s)
@@ -6464,7 +6489,7 @@ func (x *fastReflection_Params) ProtoMethods() *protoiface.Methods {
 			i--
 			dAtA[i] = 0x1
 			i--
-			dAtA[i] = 0x92
+			dAtA[i] = 0x9a
 		}
 		if len(x.OptimisticAuthorizedAddresses) > 0 {
 			for iNdEx := len(x.OptimisticAuthorizedAddresses) - 1; iNdEx >= 0; iNdEx-- {
@@ -6474,9 +6499,18 @@ func (x *fastReflection_Params) ProtoMethods() *protoiface.Methods {
 				i--
 				dAtA[i] = 0x1
 				i--
-				dAtA[i] = 0x8a
+				dAtA[i] = 0x92
 			}
 		}
+		if len(x.ProposalCancelMaxPeriod) > 0 {
+			i -= len(x.ProposalCancelMaxPeriod)
+			copy(dAtA[i:], x.ProposalCancelMaxPeriod)
+			i = runtime.EncodeVarint(dAtA, i, uint64(len(x.ProposalCancelMaxPeriod)))
+			i--
+			dAtA[i] = 0x1
+			i--
+			dAtA[i] = 0x8a
+		}
 		if len(x.MinDepositRatio) > 0 {
 			i -= len(x.MinDepositRatio)
 			copy(dAtA[i:], x.MinDepositRatio)
@@ -7181,6 +7215,38 @@ func (x *fastReflection_Params) ProtoMethods() *protoiface.Methods {
 				x.MinDepositRatio = string(dAtA[iNdEx:postIndex])
 				iNdEx = postIndex
 			case 17:
+				if wireType != 2 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field ProposalCancelMaxPeriod", wireType)
+				}
+				var stringLen uint64
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrIntOverflow
+					}
+					if iNdEx >= l {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					stringLen |= uint64(b&0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				intStringLen := int(stringLen)
+				if intStringLen < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				postIndex := iNdEx + intStringLen
+				if postIndex < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				if postIndex > l {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+				}
+				x.ProposalCancelMaxPeriod = string(dAtA[iNdEx:postIndex])
+				iNdEx = postIndex
+			case 18:
 				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field OptimisticAuthorizedAddresses", wireType)
 				}
@@ -7212,7 +7278,7 @@ func (x *fastReflection_Params) ProtoMethods() *protoiface.Methods {
 				}
 				x.OptimisticAuthorizedAddresses = append(x.OptimisticAuthorizedAddresses, string(dAtA[iNdEx:postIndex]))
 				iNdEx = postIndex
-			case 18:
+			case 19:
 				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field OptimisticRejectedThreshold", wireType)
 				}
@@ -8132,10 +8198,16 @@ type Params struct {
 	// Minimum expedited deposit for a proposal to enter voting period.
 	ExpeditedMinDeposit []*v1beta1.Coin `protobuf:"bytes,12,rep,name=expedited_min_deposit,json=expeditedMinDeposit,proto3" json:"expedited_min_deposit,omitempty"`
 	// burn deposits if a proposal does not meet quorum
+	//
+	// Since: cosmos-sdk 0.47
 	BurnVoteQuorum bool `protobuf:"varint,13,opt,name=burn_vote_quorum,json=burnVoteQuorum,proto3" json:"burn_vote_quorum,omitempty"`
 	// burn deposits if the proposal does not enter voting period
+	//
+	// Since: cosmos-sdk 0.47
 	BurnProposalDepositPrevote bool `protobuf:"varint,14,opt,name=burn_proposal_deposit_prevote,json=burnProposalDepositPrevote,proto3" json:"burn_proposal_deposit_prevote,omitempty"`
 	// burn deposits if quorum with vote type no_veto is met
+	//
+	// Since: cosmos-sdk 0.47
 	BurnVoteVeto bool `protobuf:"varint,15,opt,name=burn_vote_veto,json=burnVoteVeto,proto3" json:"burn_vote_veto,omitempty"`
 	// The ratio representing the proportion of the deposit value minimum that must be met when making a deposit.
 	// Default value: 0.01. Meaning that for a chain with a min_deposit of 100stake, a deposit of 1stake would be
@@ -8143,16 +8215,21 @@ type Params struct {
 	//
 	// Since: cosmos-sdk 0.50
 	MinDepositRatio string `protobuf:"bytes,16,opt,name=min_deposit_ratio,json=minDepositRatio,proto3" json:"min_deposit_ratio,omitempty"`
+	// proposal_cancel_max_period defines how far in the voting period a proposer can cancel a proposal.
+	// If the proposal is cancelled before the max cancel period, the deposit will be returned/burn to the
+	// depositors, according to the proposal_cancel_ratio and proposal_cancel_dest parameters.
+	// After the max cancel period, the proposal cannot be cancelled anymore.
+	ProposalCancelMaxPeriod string `protobuf:"bytes,17,opt,name=proposal_cancel_max_period,json=proposalCancelMaxPeriod,proto3" json:"proposal_cancel_max_period,omitempty"`
 	// optimistic_authorized_addresses is an optional governance parameter that limits the authorized accounts than can
 	// submit optimistic proposals
 	//
 	// Since: x/gov v1.0.0
-	OptimisticAuthorizedAddresses []string `protobuf:"bytes,17,rep,name=optimistic_authorized_addresses,json=optimisticAuthorizedAddresses,proto3" json:"optimistic_authorized_addresses,omitempty"`
+	OptimisticAuthorizedAddresses []string `protobuf:"bytes,18,rep,name=optimistic_authorized_addresses,json=optimisticAuthorizedAddresses,proto3" json:"optimistic_authorized_addresses,omitempty"`
 	// optimistic rejected threshold defines at which percentage of NO votes, the optimistic proposal should fail and be
 	// converted to a standard proposal. The threshold is expressed as a percentage of the total bonded tokens.
 	//
 	// Since: x/gov v1.0.0
-	OptimisticRejectedThreshold string `protobuf:"bytes,18,opt,name=optimistic_rejected_threshold,json=optimisticRejectedThreshold,proto3" json:"optimistic_rejected_threshold,omitempty"`
+	OptimisticRejectedThreshold string `protobuf:"bytes,19,opt,name=optimistic_rejected_threshold,json=optimisticRejectedThreshold,proto3" json:"optimistic_rejected_threshold,omitempty"`
 }
 
 func (x *Params) Reset() {
@@ -8287,6 +8364,13 @@ func (x *Params) GetMinDepositRatio() string {
 	return ""
 }
 
+func (x *Params) GetProposalCancelMaxPeriod() string {
+	if x != nil {
+		return x.ProposalCancelMaxPeriod
+	}
+	return ""
+}
+
 func (x *Params) GetOptimisticAuthorizedAddresses() []string {
 	if x != nil {
 		return x.OptimisticAuthorizedAddresses
@@ -8446,7 +8530,7 @@ var file_cosmos_gov_v1_gov_proto_rawDesc = []byte{
 	0x65, 0x74, 0x6f, 0x5f, 0x74, 0x68, 0x72, 0x65, 0x73, 0x68, 0x6f, 0x6c, 0x64, 0x18, 0x03, 0x20,
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@@ -8511,68 +8595,73 @@ var file_cosmos_gov_v1_gov_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/proto/cosmos/gov/v1/gov.proto b/proto/cosmos/gov/v1/gov.proto
index 222de4104910..52f7e7f40570 100644
--- a/proto/cosmos/gov/v1/gov.proto
+++ b/proto/cosmos/gov/v1/gov.proto
@@ -289,12 +289,18 @@ message Params {
       [(gogoproto.nullable) = false, (amino.dont_omitempty) = true];
 
   // burn deposits if a proposal does not meet quorum
+  //
+  // Since: cosmos-sdk 0.47
   bool burn_vote_quorum = 13;
 
   // burn deposits if the proposal does not enter voting period
+  //
+  // Since: cosmos-sdk 0.47
   bool burn_proposal_deposit_prevote = 14;
 
   // burn deposits if quorum with vote type no_veto is met
+  //
+  // Since: cosmos-sdk 0.47
   bool burn_vote_veto = 15;
 
   // The ratio representing the proportion of the deposit value minimum that must be met when making a deposit.
@@ -304,15 +310,21 @@ message Params {
   // Since: cosmos-sdk 0.50
   string min_deposit_ratio = 16 [(cosmos_proto.scalar) = "cosmos.Dec"];
 
+  // proposal_cancel_max_period defines how far in the voting period a proposer can cancel a proposal.
+  // If the proposal is cancelled before the max cancel period, the deposit will be returned/burn to the
+  // depositors, according to the proposal_cancel_ratio and proposal_cancel_dest parameters.
+  // After the max cancel period, the proposal cannot be cancelled anymore.
+  string proposal_cancel_max_period = 17 [(cosmos_proto.scalar) = "cosmos.Dec"];
+
   // optimistic_authorized_addresses is an optional governance parameter that limits the authorized accounts than can
   // submit optimistic proposals
   //
   // Since: x/gov v1.0.0
-  repeated string optimistic_authorized_addresses = 17 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  repeated string optimistic_authorized_addresses = 18 [(cosmos_proto.scalar) = "cosmos.AddressString"];
 
   // optimistic rejected threshold defines at which percentage of NO votes, the optimistic proposal should fail and be
   // converted to a standard proposal. The threshold is expressed as a percentage of the total bonded tokens.
   //
   // Since: x/gov v1.0.0
-  string optimistic_rejected_threshold = 18 [(cosmos_proto.scalar) = "cosmos.Dec"];
+  string optimistic_rejected_threshold = 19 [(cosmos_proto.scalar) = "cosmos.Dec"];
 }
diff --git a/x/gov/CHANGELOG.md b/x/gov/CHANGELOG.md
index 26e15e70a682..d163d93e6f46 100644
--- a/x/gov/CHANGELOG.md
+++ b/x/gov/CHANGELOG.md
@@ -33,7 +33,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
-* [#18445](https://github.com/cosmos/cosmos-sdk/pull/18445) Extend gov config 
+* [#18856](https://github.com/cosmos/cosmos-sdk/pull/18856) Add `ProposalCancelMaxPeriod` for modifying how long a proposal can be cancelled after it has been submitted.
+* [#18445](https://github.com/cosmos/cosmos-sdk/pull/18445) Extend gov config.
 * [#18532](https://github.com/cosmos/cosmos-sdk/pull/18532) Repurpose `govcliutils.NormalizeProposalType` to work for gov v1 proposal types.
 
 ### API Breaking Changes
diff --git a/x/gov/README.md b/x/gov/README.md
index 93eb4eb17b52..cef4b35d6904 100644
--- a/x/gov/README.md
+++ b/x/gov/README.md
@@ -591,23 +591,26 @@ The governance module emits the following events:
 
 The governance module contains the following parameters:
 
-| Key                             | Type                   | Example                                 |
-| ------------------------------- | ---------------------- | --------------------------------------- |
-| min_deposit                     | array (coins)          | [{"denom":"uatom","amount":"10000000"}] |
-| max_deposit_period              | string (time ns)       | "172800000000000" (17280s)              |
-| voting_period                   | string (time ns)       | "172800000000000" (17280s)              |
-| quorum                          | string (dec)           | "0.334000000000000000"                  |
-| threshold                       | string (dec)           | "0.500000000000000000"                  |
-| veto                            | string (dec)           | "0.334000000000000000"                  |
-| expedited_threshold             | string (time ns)       | "0.667000000000000000"                  |
-| expedited_voting_period         | string (time ns)       | "86400000000000" (8600s)                |
-| expedited_min_deposit           | array (coins)          | [{"denom":"uatom","amount":"50000000"}] |
-| burn_proposal_deposit_prevote   | bool                   | false                                   |
-| burn_vote_quorum                | bool                   | false                                   |
-| burn_vote_veto                  | bool                   | true                                    |
-| min_initial_deposit_ratio       | string                 | "0.1"                                   |
-| optimistic_rejected_threshold   | string (dec)           | "0.1"                                   |
-| optimistic_authorized_addresses | bytes array (addresses) | [][]                                    |
+| Key                             | Type              | Example                                 |
+| ------------------------------- | ----------------- | --------------------------------------- |
+| min_deposit                     | array (coins)     | [{"denom":"uatom","amount":"10000000"}] |
+| max_deposit_period              | string (time ns)  | "172800000000000" (17280s)              |
+| voting_period                   | string (time ns)  | "172800000000000" (17280s)              |
+| quorum                          | string (dec)      | "0.334000000000000000"                  |
+| threshold                       | string (dec)      | "0.500000000000000000"                  |
+| veto                            | string (dec)      | "0.334000000000000000"                  |
+| expedited_threshold             | string (time ns)  | "0.667000000000000000"                  |
+| expedited_voting_period         | string (time ns)  | "86400000000000" (8600s)                |
+| expedited_min_deposit           | array (coins)     | [{"denom":"uatom","amount":"50000000"}] |
+| burn_proposal_deposit_prevote   | bool              | false                                   |
+| burn_vote_quorum                | bool              | false                                   |
+| burn_vote_veto                  | bool              | true                                    |
+| min_initial_deposit_ratio       | string            | "0.1"                                   |
+| proposal_cancel_ratio           | string (dec)      | "0.5"                                   |
+| proposal_cancel_dest            | string (address)  | "cosmos1.." or empty for burn           |
+| proposal_cancel_max_period      | string (dec)      | "0.5"                                   |
+| optimistic_rejected_threshold   | string (dec)      | "0.1"                                   |
+| optimistic_authorized_addresses | array (addresses) | []                                      |
 
 **NOTE**: The governance module contains parameters that are objects unlike other
 modules. If only a subset of parameters are desired to be changed, only they need
diff --git a/x/gov/keeper/msg_server_test.go b/x/gov/keeper/msg_server_test.go
index 6dd9035cb3d8..d7332af8ba2f 100644
--- a/x/gov/keeper/msg_server_test.go
+++ b/x/gov/keeper/msg_server_test.go
@@ -337,11 +337,11 @@ func (suite *KeeperTestSuite) TestMsgCancelProposal() {
 			},
 			depositor: proposer,
 			expErr:    true,
-			expErrMsg: "not found",
+			expErrMsg: "proposal 0 doesn't exist",
 		},
 		"valid proposal but invalid proposer": {
 			preRun: func() uint64 {
-				return proposalID
+				return res.ProposalId
 			},
 			depositor: addrs[1],
 			expErr:    true,
diff --git a/x/gov/keeper/proposal.go b/x/gov/keeper/proposal.go
index 761abe4d367e..7ece5a6cc0fe 100644
--- a/x/gov/keeper/proposal.go
+++ b/x/gov/keeper/proposal.go
@@ -11,6 +11,7 @@ import (
 
 	"cosmossdk.io/collections"
 	errorsmod "cosmossdk.io/errors"
+	sdkmath "cosmossdk.io/math"
 	"cosmossdk.io/x/gov/types"
 	v1 "cosmossdk.io/x/gov/types/v1"
 
@@ -126,6 +127,14 @@ func (keeper Keeper) SubmitProposal(ctx context.Context, messages []sdk.Msg, met
 func (keeper Keeper) CancelProposal(ctx context.Context, proposalID uint64, proposer string) error {
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 	proposal, err := keeper.Proposals.Get(ctx, proposalID)
+	if err != nil {
+		if errors.Is(err, collections.ErrNotFound) {
+			return types.ErrInvalidProposal.Wrapf("proposal %d doesn't exist", proposalID)
+		}
+		return err
+	}
+
+	params, err := keeper.Params.Get(ctx)
 	if err != nil {
 		return err
 	}
@@ -146,18 +155,22 @@ func (keeper Keeper) CancelProposal(ctx context.Context, proposalID uint64, prop
 		return types.ErrInvalidProposal.Wrap("proposal should be in the deposit or voting period")
 	}
 
-	// Check proposal voting period is ended.
-	if proposal.VotingEndTime != nil && proposal.VotingEndTime.Before(sdkCtx.HeaderInfo().Time) {
-		return types.ErrVotingPeriodEnded.Wrapf("voting period is already ended for this proposal %d", proposalID)
+	// Check proposal is not too far in voting period to be canceled
+	if proposal.VotingEndTime != nil {
+		currentTime := sdkCtx.HeaderInfo().Time
+
+		maxCancelPeriodRate := sdkmath.LegacyMustNewDecFromStr(params.ProposalCancelMaxPeriod)
+		maxCancelPeriod := time.Duration(float64(proposal.VotingEndTime.Sub(*proposal.VotingStartTime)) * maxCancelPeriodRate.MustFloat64()).Round(time.Second)
+
+		if proposal.VotingEndTime.Before(currentTime) {
+			return types.ErrVotingPeriodEnded.Wrapf("voting period is already ended for this proposal %d", proposalID)
+		} else if proposal.VotingEndTime.Add(-maxCancelPeriod).Before(currentTime) {
+			return types.ErrTooLateToCancel.Wrapf("proposal %d is too late to cancel", proposalID)
+		}
 	}
 
 	// burn the (deposits * proposal_cancel_rate) amount or sent to cancellation destination address.
 	// and deposits * (1 - proposal_cancel_rate) will be sent to depositors.
-	params, err := keeper.Params.Get(ctx)
-	if err != nil {
-		return err
-	}
-
 	err = keeper.ChargeDeposit(ctx, proposal.Id, params.ProposalCancelDest, params.ProposalCancelRatio)
 	if err != nil {
 		return err
diff --git a/x/gov/keeper/proposal_test.go b/x/gov/keeper/proposal_test.go
index 281b6563d58b..d8e591200c06 100644
--- a/x/gov/keeper/proposal_test.go
+++ b/x/gov/keeper/proposal_test.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 
@@ -216,32 +217,32 @@ func (suite *KeeperTestSuite) TestCancelProposal() {
 	suite.Require().NoError(err)
 
 	testCases := []struct {
-		name        string
-		malleate    func() (proposalID uint64, proposer string)
-		proposalID  uint64
-		proposer    string
-		expectedErr bool
+		name           string
+		malleate       func() (proposalID uint64, proposer string)
+		proposalID     uint64
+		proposer       string
+		expectedErrMsg string
 	}{
 		{
 			name: "without proposer",
 			malleate: func() (uint64, string) {
-				return 1, ""
+				return proposalID, ""
 			},
-			expectedErr: true,
+			expectedErrMsg: "invalid proposer",
 		},
 		{
 			name: "invalid proposal id",
 			malleate: func() (uint64, string) {
-				return 1, suite.addrs[1].String()
+				return 10, suite.addrs[1].String()
 			},
-			expectedErr: true,
+			expectedErrMsg: "proposal 10 doesn't exist",
 		},
 		{
 			name: "valid proposalID but invalid proposer",
 			malleate: func() (uint64, string) {
 				return proposalID, suite.addrs[1].String()
 			},
-			expectedErr: true,
+			expectedErrMsg: "invalid proposer",
 		},
 		{
 			name: "valid proposalID but invalid proposal which has already passed",
@@ -255,14 +256,32 @@ func (suite *KeeperTestSuite) TestCancelProposal() {
 				suite.Require().NoError(err)
 				return proposal2ID, suite.addrs[1].String()
 			},
-			expectedErr: true,
+			expectedErrMsg: "proposal should be in the deposit or voting period",
+		},
+		{
+			name: "proposal canceled too late",
+			malleate: func() (uint64, string) {
+				suite.Require().NoError(suite.govKeeper.ActivateVotingPeriod(suite.ctx, proposal2))
+
+				proposal2, err = suite.govKeeper.Proposals.Get(suite.ctx, proposal2.Id)
+				suite.Require().Nil(err)
+
+				headerInfo := suite.ctx.HeaderInfo()
+				// try to cancel 1min before the end of the voting period
+				// this should fail, as we allow to cancel proposal (by default) up to 1/2 of the voting period
+				headerInfo.Time = proposal2.VotingEndTime.Add(-1 * time.Minute)
+				suite.ctx = suite.ctx.WithHeaderInfo(headerInfo)
+
+				suite.Require().NoError(err)
+				return proposal2ID, suite.addrs[1].String()
+			},
+			expectedErrMsg: "too late",
 		},
 		{
 			name: "valid proposer and proposal id",
 			malleate: func() (uint64, string) {
 				return proposalID, suite.addrs[0].String()
 			},
-			expectedErr: false,
 		},
 		{
 			name: "valid case with deletion of votes",
@@ -283,7 +302,6 @@ func (suite *KeeperTestSuite) TestCancelProposal() {
 
 				return proposalID, suite.addrs[0].String()
 			},
-			expectedErr: false,
 		},
 	}
 
@@ -291,8 +309,8 @@ func (suite *KeeperTestSuite) TestCancelProposal() {
 		suite.Run(tc.name, func() {
 			pID, proposer := tc.malleate()
 			err = suite.govKeeper.CancelProposal(suite.ctx, pID, proposer)
-			if tc.expectedErr {
-				suite.Require().Error(err)
+			if tc.expectedErrMsg != "" {
+				suite.Require().ErrorContains(err, tc.expectedErrMsg)
 			} else {
 				suite.Require().NoError(err)
 			}
diff --git a/x/gov/migrations/v6/store.go b/x/gov/migrations/v6/store.go
index bebcfdfcaf74..5855125597a5 100644
--- a/x/gov/migrations/v6/store.go
+++ b/x/gov/migrations/v6/store.go
@@ -42,6 +42,7 @@ func MigrateStore(ctx sdk.Context, paramsCollection collections.Item[v1.Params],
 	defaultParams := v1.DefaultParams()
 	govParams.OptimisticAuthorizedAddresses = defaultParams.OptimisticAuthorizedAddresses
 	govParams.OptimisticRejectedThreshold = defaultParams.OptimisticRejectedThreshold
+	govParams.ProposalCancelMaxPeriod = defaultParams.ProposalCancelMaxPeriod
 
 	return paramsCollection.Set(ctx, govParams)
 }
diff --git a/x/gov/simulation/genesis.go b/x/gov/simulation/genesis.go
index 389edc1d012b..e3c96e036ec9 100644
--- a/x/gov/simulation/genesis.go
+++ b/x/gov/simulation/genesis.go
@@ -17,19 +17,20 @@ import (
 
 // Simulation parameter constants
 const (
-	MinDeposit                  = "min_deposit"
-	ExpeditedMinDeposit         = "expedited_min_deposit"
-	DepositPeriod               = "deposit_period"
-	MinInitialRatio             = "min_initial_ratio"
-	VotingPeriod                = "voting_period"
-	ExpeditedVotingPeriod       = "expedited_voting_period"
-	Quorum                      = "quorum"
-	Threshold                   = "threshold"
-	ExpeditedThreshold          = "expedited_threshold"
-	Veto                        = "veto"
-	OptimisticRejectedThreshold = "optimistic_rejected_threshold"
-	ProposalCancelRate          = "proposal_cancel_rate"
-	MinDepositRatio             = "min_deposit_ratio"
+	MinDeposit                    = "min_deposit"
+	ExpeditedMinDeposit           = "expedited_min_deposit"
+	DepositPeriod                 = "deposit_period"
+	MinInitialRatio               = "min_initial_ratio"
+	VotingPeriod                  = "voting_period"
+	ExpeditedVotingPeriod         = "expedited_voting_period"
+	Quorum                        = "quorum"
+	Threshold                     = "threshold"
+	ExpeditedThreshold            = "expedited_threshold"
+	Veto                          = "veto"
+	OptimisticRejectedThreshold   = "optimistic_rejected_threshold"
+	ProposalCancelRate            = "proposal_cancel_rate"
+	ProposalMaxCancelVotingPeriod = "proposal_max_cancel_voting_period"
+	MinDepositRatio               = "min_deposit_ratio"
 
 	// ExpeditedThreshold must be at least as large as the regular Threshold
 	// Therefore, we use this break out point in randomization.
@@ -66,6 +67,10 @@ func GenProposalCancelRate(r *rand.Rand) sdkmath.LegacyDec {
 	return sdkmath.LegacyNewDec(int64(simulation.RandIntBetween(r, 0, 99))).Quo(sdkmath.LegacyNewDec(100))
 }
 
+func GenProposalMaxCancelVotingPeriod(r *rand.Rand) sdkmath.LegacyDec {
+	return sdkmath.LegacyNewDec(int64(simulation.RandIntBetween(r, 0, 99))).Quo(sdkmath.LegacyNewDec(100))
+}
+
 // GenVotingPeriod returns randomized VotingPeriod
 func GenVotingPeriod(r *rand.Rand) time.Duration {
 	return time.Duration(simulation.RandIntBetween(r, expeditedMaxVotingPeriod, 2*expeditedMaxVotingPeriod)) * time.Second
@@ -125,6 +130,9 @@ func RandomizedGenState(simState *module.SimulationState) {
 	var proposalCancelRate sdkmath.LegacyDec
 	simState.AppParams.GetOrGenerate(ProposalCancelRate, &proposalCancelRate, simState.Rand, func(r *rand.Rand) { proposalCancelRate = GenProposalCancelRate(r) })
 
+	var proposalMaxCancelVotingPeriod sdkmath.LegacyDec
+	simState.AppParams.GetOrGenerate(ProposalMaxCancelVotingPeriod, &proposalMaxCancelVotingPeriod, simState.Rand, func(r *rand.Rand) { proposalMaxCancelVotingPeriod = GenProposalMaxCancelVotingPeriod(r) })
+
 	var votingPeriod time.Duration
 	simState.AppParams.GetOrGenerate(VotingPeriod, &votingPeriod, simState.Rand, func(r *rand.Rand) { votingPeriod = GenVotingPeriod(r) })
 
@@ -151,7 +159,7 @@ func RandomizedGenState(simState *module.SimulationState) {
 
 	govGenesis := v1.NewGenesisState(
 		startingProposalID,
-		v1.NewParams(minDeposit, expeditedMinDeposit, depositPeriod, votingPeriod, expeditedVotingPeriod, quorum.String(), threshold.String(), expitedVotingThreshold.String(), veto.String(), minInitialDepositRatio.String(), proposalCancelRate.String(), "", simState.Rand.Intn(2) == 0, simState.Rand.Intn(2) == 0, simState.Rand.Intn(2) == 0, minDepositRatio.String(), optimisticRejectedThreshold.String(), []string{}),
+		v1.NewParams(minDeposit, expeditedMinDeposit, depositPeriod, votingPeriod, expeditedVotingPeriod, quorum.String(), threshold.String(), expitedVotingThreshold.String(), veto.String(), minInitialDepositRatio.String(), proposalCancelRate.String(), "", proposalMaxCancelVotingPeriod.String(), simState.Rand.Intn(2) == 0, simState.Rand.Intn(2) == 0, simState.Rand.Intn(2) == 0, minDepositRatio.String(), optimisticRejectedThreshold.String(), []string{}),
 	)
 
 	bz, err := json.MarshalIndent(&govGenesis, "", " ")
diff --git a/x/gov/simulation/genesis_test.go b/x/gov/simulation/genesis_test.go
index ce45a0b42b20..6e14ccc68613 100644
--- a/x/gov/simulation/genesis_test.go
+++ b/x/gov/simulation/genesis_test.go
@@ -46,22 +46,24 @@ func TestRandomizedGenState(t *testing.T) {
 	simState.Cdc.MustUnmarshalJSON(simState.GenState[types.ModuleName], &govGenesis)
 
 	const (
-		tallyQuorum             = "0.350000000000000000"
-		tallyThreshold          = "0.495000000000000000"
-		tallyExpeditedThreshold = "0.545000000000000000"
-		tallyVetoThreshold      = "0.327000000000000000"
+		tallyQuorum             = "0.387000000000000000"
+		tallyThreshold          = "0.452000000000000000"
+		tallyExpeditedThreshold = "0.537000000000000000"
+		tallyVetoThreshold      = "0.276000000000000000"
 		minInitialDepositDec    = "0.880000000000000000"
+		proposalCancelMaxPeriod = "0.110000000000000000"
 	)
 
 	assert.Equal(t, "272stake", govGenesis.Params.MinDeposit[0].String())
 	assert.Equal(t, "800stake", govGenesis.Params.ExpeditedMinDeposit[0].String())
 	assert.Equal(t, "41h11m36s", govGenesis.Params.MaxDepositPeriod.String())
-	assert.Equal(t, float64(283889), govGenesis.Params.VotingPeriod.Seconds())
-	assert.Equal(t, float64(123081), govGenesis.Params.ExpeditedVotingPeriod.Seconds())
+	assert.Equal(t, float64(291928), govGenesis.Params.VotingPeriod.Seconds())
+	assert.Equal(t, float64(33502), govGenesis.Params.ExpeditedVotingPeriod.Seconds())
 	assert.Equal(t, tallyQuorum, govGenesis.Params.Quorum)
 	assert.Equal(t, tallyThreshold, govGenesis.Params.Threshold)
 	assert.Equal(t, tallyExpeditedThreshold, govGenesis.Params.ExpeditedThreshold)
 	assert.Equal(t, tallyVetoThreshold, govGenesis.Params.VetoThreshold)
+	assert.Equal(t, proposalCancelMaxPeriod, govGenesis.Params.ProposalCancelMaxPeriod)
 	assert.Equal(t, uint64(0x28), govGenesis.StartingProposalId)
 	assert.DeepEqual(t, []*v1.Deposit{}, govGenesis.Deposits)
 	assert.DeepEqual(t, []*v1.Vote{}, govGenesis.Votes)
diff --git a/x/gov/types/errors.go b/x/gov/types/errors.go
index afbbbc2b70be..95e06916092c 100644
--- a/x/gov/types/errors.go
+++ b/x/gov/types/errors.go
@@ -26,4 +26,5 @@ var (
 	ErrSummaryTooLong          = errors.Register(ModuleName, 22, "summary too long")
 	ErrInvalidDepositDenom     = errors.Register(ModuleName, 23, "invalid deposit denom")
 	ErrTitleTooLong            = errors.Register(ModuleName, 24, "title too long")
+	ErrTooLateToCancel         = errors.Register(ModuleName, 25, "too late to cancel proposal")
 )
diff --git a/x/gov/types/v1/gov.pb.go b/x/gov/types/v1/gov.pb.go
index f8f0c2e3c5af..510ad67595ea 100644
--- a/x/gov/types/v1/gov.pb.go
+++ b/x/gov/types/v1/gov.pb.go
@@ -873,10 +873,16 @@ type Params struct {
 	// Minimum expedited deposit for a proposal to enter voting period.
 	ExpeditedMinDeposit []types.Coin `protobuf:"bytes,12,rep,name=expedited_min_deposit,json=expeditedMinDeposit,proto3" json:"expedited_min_deposit"`
 	// burn deposits if a proposal does not meet quorum
+	//
+	// Since: cosmos-sdk 0.47
 	BurnVoteQuorum bool `protobuf:"varint,13,opt,name=burn_vote_quorum,json=burnVoteQuorum,proto3" json:"burn_vote_quorum,omitempty"`
 	// burn deposits if the proposal does not enter voting period
+	//
+	// Since: cosmos-sdk 0.47
 	BurnProposalDepositPrevote bool `protobuf:"varint,14,opt,name=burn_proposal_deposit_prevote,json=burnProposalDepositPrevote,proto3" json:"burn_proposal_deposit_prevote,omitempty"`
 	// burn deposits if quorum with vote type no_veto is met
+	//
+	// Since: cosmos-sdk 0.47
 	BurnVoteVeto bool `protobuf:"varint,15,opt,name=burn_vote_veto,json=burnVoteVeto,proto3" json:"burn_vote_veto,omitempty"`
 	// The ratio representing the proportion of the deposit value minimum that must be met when making a deposit.
 	// Default value: 0.01. Meaning that for a chain with a min_deposit of 100stake, a deposit of 1stake would be
@@ -884,16 +890,21 @@ type Params struct {
 	//
 	// Since: cosmos-sdk 0.50
 	MinDepositRatio string `protobuf:"bytes,16,opt,name=min_deposit_ratio,json=minDepositRatio,proto3" json:"min_deposit_ratio,omitempty"`
+	// proposal_cancel_max_period defines how far in the voting period a proposer can cancel a proposal.
+	// If the proposal is cancelled before the max cancel period, the deposit will be returned/burn to the
+	// depositors, according to the proposal_cancel_ratio and proposal_cancel_dest parameters.
+	// After the max cancel period, the proposal cannot be cancelled anymore.
+	ProposalCancelMaxPeriod string `protobuf:"bytes,17,opt,name=proposal_cancel_max_period,json=proposalCancelMaxPeriod,proto3" json:"proposal_cancel_max_period,omitempty"`
 	// optimistic_authorized_addresses is an optional governance parameter that limits the authorized accounts than can
 	// submit optimistic proposals
 	//
 	// Since: x/gov v1.0.0
-	OptimisticAuthorizedAddresses []string `protobuf:"bytes,17,rep,name=optimistic_authorized_addresses,json=optimisticAuthorizedAddresses,proto3" json:"optimistic_authorized_addresses,omitempty"`
+	OptimisticAuthorizedAddresses []string `protobuf:"bytes,18,rep,name=optimistic_authorized_addresses,json=optimisticAuthorizedAddresses,proto3" json:"optimistic_authorized_addresses,omitempty"`
 	// optimistic rejected threshold defines at which percentage of NO votes, the optimistic proposal should fail and be
 	// converted to a standard proposal. The threshold is expressed as a percentage of the total bonded tokens.
 	//
 	// Since: x/gov v1.0.0
-	OptimisticRejectedThreshold string `protobuf:"bytes,18,opt,name=optimistic_rejected_threshold,json=optimisticRejectedThreshold,proto3" json:"optimistic_rejected_threshold,omitempty"`
+	OptimisticRejectedThreshold string `protobuf:"bytes,19,opt,name=optimistic_rejected_threshold,json=optimisticRejectedThreshold,proto3" json:"optimistic_rejected_threshold,omitempty"`
 }
 
 func (m *Params) Reset()         { *m = Params{} }
@@ -1041,6 +1052,13 @@ func (m *Params) GetMinDepositRatio() string {
 	return ""
 }
 
+func (m *Params) GetProposalCancelMaxPeriod() string {
+	if m != nil {
+		return m.ProposalCancelMaxPeriod
+	}
+	return ""
+}
+
 func (m *Params) GetOptimisticAuthorizedAddresses() []string {
 	if m != nil {
 		return m.OptimisticAuthorizedAddresses
@@ -1073,110 +1091,112 @@ func init() {
 func init() { proto.RegisterFile("cosmos/gov/v1/gov.proto", fileDescriptor_e05cb1c0d030febb) }
 
 var fileDescriptor_e05cb1c0d030febb = []byte{
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+	0x7f, 0x5d, 0x75, 0x48, 0xed, 0x9a, 0xff, 0x28, 0xc1, 0x3e, 0x8d, 0x07, 0xb5, 0xf1, 0xd1, 0x65,
+	0x9e, 0x9f, 0xa5, 0x1f, 0xfe, 0x3f, 0x00, 0x00, 0xff, 0xff, 0xc1, 0xb1, 0x81, 0x9b, 0xb2, 0x10,
+	0x00, 0x00,
 }
 
 func (m *WeightedVoteOption) Marshal() (dAtA []byte, err error) {
@@ -1693,7 +1713,7 @@ func (m *Params) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x1
 		i--
-		dAtA[i] = 0x92
+		dAtA[i] = 0x9a
 	}
 	if len(m.OptimisticAuthorizedAddresses) > 0 {
 		for iNdEx := len(m.OptimisticAuthorizedAddresses) - 1; iNdEx >= 0; iNdEx-- {
@@ -1703,9 +1723,18 @@ func (m *Params) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			i--
 			dAtA[i] = 0x1
 			i--
-			dAtA[i] = 0x8a
+			dAtA[i] = 0x92
 		}
 	}
+	if len(m.ProposalCancelMaxPeriod) > 0 {
+		i -= len(m.ProposalCancelMaxPeriod)
+		copy(dAtA[i:], m.ProposalCancelMaxPeriod)
+		i = encodeVarintGov(dAtA, i, uint64(len(m.ProposalCancelMaxPeriod)))
+		i--
+		dAtA[i] = 0x1
+		i--
+		dAtA[i] = 0x8a
+	}
 	if len(m.MinDepositRatio) > 0 {
 		i -= len(m.MinDepositRatio)
 		copy(dAtA[i:], m.MinDepositRatio)
@@ -2156,6 +2185,10 @@ func (m *Params) Size() (n int) {
 	if l > 0 {
 		n += 2 + l + sovGov(uint64(l))
 	}
+	l = len(m.ProposalCancelMaxPeriod)
+	if l > 0 {
+		n += 2 + l + sovGov(uint64(l))
+	}
 	if len(m.OptimisticAuthorizedAddresses) > 0 {
 		for _, s := range m.OptimisticAuthorizedAddresses {
 			l = len(s)
@@ -4197,6 +4230,38 @@ func (m *Params) Unmarshal(dAtA []byte) error {
 			m.MinDepositRatio = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
 		case 17:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ProposalCancelMaxPeriod", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGov
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGov
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGov
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ProposalCancelMaxPeriod = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 18:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field OptimisticAuthorizedAddresses", wireType)
 			}
@@ -4228,7 +4293,7 @@ func (m *Params) Unmarshal(dAtA []byte) error {
 			}
 			m.OptimisticAuthorizedAddresses = append(m.OptimisticAuthorizedAddresses, string(dAtA[iNdEx:postIndex]))
 			iNdEx = postIndex
-		case 18:
+		case 19:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field OptimisticRejectedThreshold", wireType)
 			}
diff --git a/x/gov/types/v1/params.go b/x/gov/types/v1/params.go
index 73a6d7d2352e..fd87c953f559 100644
--- a/x/gov/types/v1/params.go
+++ b/x/gov/types/v1/params.go
@@ -28,6 +28,7 @@ var (
 	DefaultMinInitialDepositRatio       = sdkmath.LegacyZeroDec()
 	DefaultProposalCancelRatio          = sdkmath.LegacyMustNewDecFromStr("0.5")
 	DefaultProposalCancelDestAddress    = ""
+	DefaultProposalCancelMaxPeriod      = sdkmath.LegacyMustNewDecFromStr("0.5")
 	DefaultBurnProposalPrevote          = false // set to false to replicate behavior of when this change was made (0.47)
 	DefaultBurnVoteQuorom               = false // set to false to  replicate behavior of when this change was made (0.47)
 	DefaultBurnVoteVeto                 = true  // set to true to replicate behavior of when this change was made (0.47)
@@ -63,7 +64,7 @@ func NewVotingParams(votingPeriod *time.Duration) VotingParams {
 // NewParams creates a new Params instance with given values.
 func NewParams(
 	minDeposit, expeditedminDeposit sdk.Coins, maxDepositPeriod, votingPeriod, expeditedVotingPeriod time.Duration,
-	quorum, threshold, expeditedThreshold, vetoThreshold, minInitialDepositRatio, proposalCancelRatio, proposalCancelDest string,
+	quorum, threshold, expeditedThreshold, vetoThreshold, minInitialDepositRatio, proposalCancelRatio, proposalCancelDest, proposalMaxCancelVotingPeriod string,
 	burnProposalDeposit, burnVoteQuorum, burnVoteVeto bool, minDepositRatio, optimisticRejectedThreshold string, optimisticAuthorizedAddresses []string,
 ) Params {
 	return Params{
@@ -79,6 +80,7 @@ func NewParams(
 		MinInitialDepositRatio:        minInitialDepositRatio,
 		ProposalCancelRatio:           proposalCancelRatio,
 		ProposalCancelDest:            proposalCancelDest,
+		ProposalCancelMaxPeriod:       proposalMaxCancelVotingPeriod,
 		BurnProposalDepositPrevote:    burnProposalDeposit,
 		BurnVoteQuorum:                burnVoteQuorum,
 		BurnVoteVeto:                  burnVoteVeto,
@@ -103,6 +105,7 @@ func DefaultParams() Params {
 		DefaultMinInitialDepositRatio.String(),
 		DefaultProposalCancelRatio.String(),
 		DefaultProposalCancelDestAddress,
+		DefaultProposalCancelMaxPeriod.String(),
 		DefaultBurnProposalPrevote,
 		DefaultBurnVoteQuorom,
 		DefaultBurnVoteVeto,
@@ -238,6 +241,17 @@ func (p Params) ValidateBasic(addressCodec address.Codec) error {
 		return fmt.Errorf("burn rate of cancel proposal is too large: %s", proposalCancelRate)
 	}
 
+	proposalCancelMaxPeriod, err := sdkmath.LegacyNewDecFromStr(p.ProposalCancelMaxPeriod)
+	if err != nil {
+		return fmt.Errorf("invalid max cancel period of cancel proposal: %w", err)
+	}
+	if proposalCancelMaxPeriod.IsNegative() {
+		return fmt.Errorf("max cancel period of cancel proposal must be positive: %s", proposalCancelMaxPeriod)
+	}
+	if proposalCancelMaxPeriod.GT(sdkmath.LegacyOneDec()) {
+		return fmt.Errorf("max cancel period of cancel proposal is too large: %s", proposalCancelMaxPeriod)
+	}
+
 	if len(p.ProposalCancelDest) != 0 {
 		_, err := sdk.AccAddressFromBech32(p.ProposalCancelDest)
 		if err != nil {
diff --git a/x/tx/internal/testpb/signers.proto b/x/tx/internal/testpb/signers.proto
index eb55fff9ac14..63eb38cba43b 100644
--- a/x/tx/internal/testpb/signers.proto
+++ b/x/tx/internal/testpb/signers.proto
@@ -72,11 +72,11 @@ message DeeplyNestedSigner {
 
 message DeeplyNestedRepeatedSigner {
   option (cosmos.msg.v1.signer) = "inner";
-  repeated Inner inner                   = 1;
+  repeated Inner inner          = 1;
 
   message Inner {
     option (cosmos.msg.v1.signer) = "inner";
-    repeated Inner inner = 1;
+    repeated Inner inner          = 1;
 
     message Inner {
       option (cosmos.msg.v1.signer) = "inner";
@@ -90,7 +90,6 @@ message DeeplyNestedRepeatedSigner {
   }
 }
 
-
 message BadSigner {
   option (cosmos.msg.v1.signer) = "signer";
   bytes signer                  = 1;