diff --git a/src/account/default.ts b/src/account/default.ts
index 3b9fc27a0..3afc3cf93 100644
--- a/src/account/default.ts
+++ b/src/account/default.ts
@@ -59,20 +59,16 @@ export class Account extends Provider implements AccountInterface {
     const signature = await this.signer.signTransaction(transactions, signerDetails);
 
     const calldata = fromCallsToExecuteCalldataWithNonce(transactions, nonce);
-    const fetchedEstimate = await super.getEstimateFee(
+    const response = await super.getEstimateFee(
       { contractAddress: this.address, entrypoint: '__execute__', calldata, signature },
       blockIdentifier,
       { version }
     );
-    const fee = fetchedEstimate.overall_fee ?? fetchedEstimate.amount;
-    if (fee === undefined) {
-      throw new Error('Expected either amount or overall_fee in estimate_fee response');
-    }
-    const suggestedMaxFee = estimatedFeeToMaxFee(fee);
+
+    const suggestedMaxFee = estimatedFeeToMaxFee(response.overall_fee);
 
     return {
-      amount: fee,
-      unit: fetchedEstimate.unit,
+      ...response,
       suggestedMaxFee,
     };
   }
diff --git a/src/account/interface.ts b/src/account/interface.ts
index 160ac507c..6ca606c85 100644
--- a/src/account/interface.ts
+++ b/src/account/interface.ts
@@ -3,8 +3,8 @@ import { SignerInterface } from '../signer';
 import {
   Abi,
   Call,
-  EstimateFee,
   EstimateFeeDetails,
+  EstimateFeeResponse,
   InvocationsDetails,
   InvokeFunctionResponse,
   Signature,
@@ -31,7 +31,7 @@ export abstract class AccountInterface extends ProviderInterface {
   public abstract estimateFee(
     calls: Call | Call[],
     estimateFeeDetails?: EstimateFeeDetails
-  ): Promise<EstimateFee>;
+  ): Promise<EstimateFeeResponse>;
 
   /**
    * Invoke execute function in account contract
diff --git a/src/provider/rpc.ts b/src/provider/rpc.ts
index d4c21e0e1..338aeca57 100644
--- a/src/provider/rpc.ts
+++ b/src/provider/rpc.ts
@@ -15,8 +15,8 @@ import {
   Invocation,
   InvocationsDetails,
   InvokeFunctionResponse,
-  RPC,
 } from '../types';
+import { RPC } from '../types/api';
 import { getSelectorFromName } from '../utils/hash';
 import { stringify } from '../utils/json';
 import {
diff --git a/src/provider/sequencer.ts b/src/provider/sequencer.ts
index cdd0146ee..7a4c9e3a8 100644
--- a/src/provider/sequencer.ts
+++ b/src/provider/sequencer.ts
@@ -11,16 +11,18 @@ import {
   DeployContractResponse,
   EstimateFeeResponse,
   GetBlockResponse,
-  GetContractAddressesResponse,
   GetTransactionReceiptResponse,
   GetTransactionResponse,
-  GetTransactionStatusResponse,
-  GetTransactionTraceResponse,
   Invocation,
   InvocationsDetails,
   InvokeFunctionResponse,
-  Sequencer,
 } from '../types';
+import {
+  GetContractAddressesResponse,
+  GetTransactionStatusResponse,
+  GetTransactionTraceResponse,
+  Sequencer,
+} from '../types/api';
 import { getSelectorFromName } from '../utils/hash';
 import { parse, parseAlwaysAsBig, stringify } from '../utils/json';
 import { BigNumberish, bigNumberishArrayToDecimalStringArray, toBN, toHex } from '../utils/number';
diff --git a/src/types/account.ts b/src/types/account.ts
index ce64e8323..fb20c6cd3 100644
--- a/src/types/account.ts
+++ b/src/types/account.ts
@@ -2,10 +2,9 @@ import BN from 'bn.js';
 
 import { BlockIdentifier } from '../provider/utils';
 import { BigNumberish } from '../utils/number';
+import { EstimateFeeResponse } from './provider';
 
-export interface EstimateFee {
-  amount: BN;
-  unit: string;
+export interface EstimateFee extends EstimateFeeResponse {
   suggestedMaxFee: BN;
 }
 
diff --git a/src/types/api/sequencer.ts b/src/types/api/sequencer.ts
index cb8a763eb..f8f1390eb 100644
--- a/src/types/api/sequencer.ts
+++ b/src/types/api/sequencer.ts
@@ -209,13 +209,16 @@ export namespace Sequencer {
   };
 
   // Support 0.9.1 changes in a backward-compatible way
-  export type EstimateFeeResponse = {
-    overall_fee?: BN;
-    amount?: BN;
-    unit: string;
-    gas_price?: BN;
-    gas_usage?: BigNumberish;
-  };
+  export type EstimateFeeResponse =
+    | {
+        overall_fee: number;
+        gas_price: number;
+        gas_usage: number;
+      }
+    | {
+        amount: BN;
+        unit: string;
+      };
 
   export type Endpoints = {
     get_contract_addresses: {
diff --git a/src/types/index.ts b/src/types/index.ts
index fe9af424b..450cfb3d0 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -1,5 +1,6 @@
 export * from './lib';
-export * from './api';
+export * as api from './api';
+export { Calldata, Overrides, RawArgs } from './api';
 export * from './signer';
 export * from './contract';
 export * from './account';
diff --git a/src/types/provider.ts b/src/types/provider.ts
index 6a42f6fa0..8aace924f 100644
--- a/src/types/provider.ts
+++ b/src/types/provider.ts
@@ -1,4 +1,5 @@
-import { BigNumberish } from '../utils/number';
+import BN from 'bn.js';
+
 import { Abi, CompressedProgram, EntryPointsByType, RawCalldata, Signature, Status } from './lib';
 
 export interface GetBlockResponse {
@@ -82,9 +83,9 @@ export interface InvokeTransactionReceiptResponse extends CommonTransactionRecei
 export type DeclareTransactionReceiptResponse = CommonTransactionReceiptResponse;
 
 export interface EstimateFeeResponse {
-  overall_fee: BigNumberish;
-  gas_consumed?: BigNumberish;
-  gas_price?: BigNumberish;
+  overall_fee: BN;
+  gas_consumed?: BN;
+  gas_price?: BN;
 }
 
 export interface InvokeFunctionResponse {
diff --git a/src/utils/responseParser/rpc.ts b/src/utils/responseParser/rpc.ts
index 4194d429f..987cd638f 100644
--- a/src/utils/responseParser/rpc.ts
+++ b/src/utils/responseParser/rpc.ts
@@ -7,8 +7,8 @@ import {
   GetTransactionReceiptResponse,
   GetTransactionResponse,
   InvokeFunctionResponse,
-  RPC,
 } from '../../types';
+import { RPC } from '../../types/api';
 import { toBN } from '../number';
 import { ResponseParser } from '.';
 
diff --git a/src/utils/responseParser/sequencer.ts b/src/utils/responseParser/sequencer.ts
index 10c0639fd..74f3baebe 100644
--- a/src/utils/responseParser/sequencer.ts
+++ b/src/utils/responseParser/sequencer.ts
@@ -7,8 +7,8 @@ import {
   GetTransactionReceiptResponse,
   GetTransactionResponse,
   InvokeFunctionResponse,
-  Sequencer,
 } from '../../types';
+import { Sequencer } from '../../types/api';
 import { toBN } from '../number';
 import { ResponseParser } from '.';
 
@@ -71,6 +71,23 @@ export class SequencerAPIResponseParser extends ResponseParser {
   }
 
   public parseFeeEstimateResponse(res: Sequencer.EstimateFeeResponse): EstimateFeeResponse {
+    if ('overall_fee' in res) {
+      let gasInfo = {};
+
+      try {
+        gasInfo = {
+          gas_consumed: toBN(res.gas_usage),
+          gas_price: toBN(res.gas_price),
+        };
+      } catch {
+        // do nothing
+      }
+
+      return {
+        overall_fee: toBN(res.overall_fee),
+        ...gasInfo,
+      };
+    }
     return {
       overall_fee: toBN(res.amount),
     };