diff --git a/charge.go b/charge.go
index bd97abc991..397761ec5a 100644
--- a/charge.go
+++ b/charge.go
@@ -73,6 +73,18 @@ const (
 	ChargePaymentMethodDetailsCardThreeDSecureResultReasonRejected            ChargePaymentMethodDetailsCardThreeDSecureResultReason = "rejected"
 )
 
+// The Klarna payment method used for this transaction.
+// Can be one of `pay_later`, `pay_now`, `pay_with_financing`, or `pay_in_installments`
+type ChargePaymentMethodDetailsKlarnaPaymentMethodCategory string
+
+// List of values that ChargePaymentMethodDetailsKlarnaPaymentMethodCategory can take
+const (
+	ChargePaymentMethodDetailsKlarnaPaymentMethodCategoryPayLater          ChargePaymentMethodDetailsKlarnaPaymentMethodCategory = "pay_later"
+	ChargePaymentMethodDetailsKlarnaPaymentMethodCategoryPayNow            ChargePaymentMethodDetailsKlarnaPaymentMethodCategory = "pay_now"
+	ChargePaymentMethodDetailsKlarnaPaymentMethodCategoryPayWithFinancing  ChargePaymentMethodDetailsKlarnaPaymentMethodCategory = "pay_with_financing"
+	ChargePaymentMethodDetailsKlarnaPaymentMethodCategoryPayInInstallments ChargePaymentMethodDetailsKlarnaPaymentMethodCategory = "pay_in_installments"
+)
+
 // ChargePaymentMethodDetailsType is the type of the PaymentMethod associated with the Charge's
 // payment method details.
 type ChargePaymentMethodDetailsType string
@@ -495,7 +507,10 @@ type ChargePaymentMethodDetailsInteracPresentReceipt struct {
 
 // ChargePaymentMethodDetailsKlarna represents details for the Klarna
 // PaymentMethod.
-type ChargePaymentMethodDetailsKlarna struct{}
+type ChargePaymentMethodDetailsKlarna struct {
+	PaymentMethodCategory ChargePaymentMethodDetailsKlarnaPaymentMethodCategory `json:"payment_method_category"`
+	PreferredLocale       string                                                `json:"preferred_locale"`
+}
 
 // ChargePaymentMethodDetailsMultibanco represents details about the Multibanco PaymentMethod.
 type ChargePaymentMethodDetailsMultibanco struct {
diff --git a/paymentintent.go b/paymentintent.go
index fd92ffb60f..d041babc25 100644
--- a/paymentintent.go
+++ b/paymentintent.go
@@ -216,6 +216,7 @@ type PaymentIntentPaymentMethodDataParams struct {
 	FPX              *PaymentMethodFPXParams              `form:"fpx"`
 	Grabpay          *PaymentMethodGrabpayParams          `form:"grabpay"`
 	Ideal            *PaymentMethodIdealParams            `form:"ideal"`
+	Klarna           *PaymentMethodKlarnaParams           `form:"klarna"`
 	OXXO             *PaymentMethodOXXOParams             `form:"oxxo"`
 	P24              *PaymentMethodP24Params              `form:"p24"`
 	SepaDebit        *PaymentMethodSepaDebitParams        `form:"sepa_debit"`
@@ -287,6 +288,11 @@ type PaymentIntentPaymentMethodOptionsCardParams struct {
 	RequestThreeDSecure *string                                                  `form:"request_three_d_secure"`
 }
 
+// If this is a `klarna` PaymentMethod, this sub-hash contains details about the Klarna payment method options.
+type PaymentIntentPaymentMethodOptionsKlarnaParams struct {
+	PreferredLocale *string `form:"preferred_locale"`
+}
+
 // PaymentIntentPaymentMethodOptionsOXXOParams represents the OXXO-specific options applied to a
 // PaymentIntent.
 type PaymentIntentPaymentMethodOptionsOXXOParams struct {
@@ -315,6 +321,7 @@ type PaymentIntentPaymentMethodOptionsParams struct {
 	Bancontact       *PaymentIntentPaymentMethodOptionsBancontactParams       `form:"bancontact"`
 	Boleto           *PaymentIntentPaymentMethodOptionsBoletoParams           `form:"boleto"`
 	Card             *PaymentIntentPaymentMethodOptionsCardParams             `form:"card"`
+	Klarna           *PaymentIntentPaymentMethodOptionsKlarnaParams           `form:"klarna"`
 	OXXO             *PaymentIntentPaymentMethodOptionsOXXOParams             `form:"oxxo"`
 	Sofort           *PaymentIntentPaymentMethodOptionsSofortParams           `form:"sofort"`
 	WechatPay        *PaymentIntentPaymentMethodOptionsWechatPayParams        `form:"wechat_pay"`
@@ -511,6 +518,12 @@ type PaymentIntentPaymentMethodOptionsCard struct {
 	RequestThreeDSecure PaymentIntentPaymentMethodOptionsCardRequestThreeDSecure `json:"request_three_d_secure"`
 }
 
+// PaymentIntentPaymentMethodOptionsKlarna is the set of Klarna-specific options associated
+// with that payment intent.
+type PaymentIntentPaymentMethodOptionsKlarna struct {
+	PreferredLocale string `json:"preferred_locale"`
+}
+
 // PaymentIntentPaymentMethodOptionsOXXO is the set of OXXO-specific options associated
 // with that payment intent.
 type PaymentIntentPaymentMethodOptionsOXXO struct {
@@ -539,6 +552,7 @@ type PaymentIntentPaymentMethodOptions struct {
 	Bancontact       *PaymentIntentPaymentMethodOptionsBancontact       `json:"bancontact"`
 	Boleto           *PaymentIntentPaymentMethodOptionsBoleto           `json:"boleto"`
 	Card             *PaymentIntentPaymentMethodOptionsCard             `json:"card"`
+	Klarna           *PaymentIntentPaymentMethodOptionsKlarna           `json:"klarna"`
 	OXXO             *PaymentIntentPaymentMethodOptionsOXXO             `json:"oxxo"`
 	Sofort           *PaymentIntentPaymentMethodOptionsSofort           `json:"sofort"`
 	WechatPay        *PaymentIntentPaymentMethodOptionsWechatPay        `json:"wechat_pay"`
diff --git a/paymentmethod.go b/paymentmethod.go
index d147b69065..b13eb96a0b 100644
--- a/paymentmethod.go
+++ b/paymentmethod.go
@@ -31,6 +31,7 @@ const (
 	PaymentMethodTypeGrabpay          PaymentMethodType = "grabpay"
 	PaymentMethodTypeIdeal            PaymentMethodType = "ideal"
 	PaymentMethodTypeInteracPresent   PaymentMethodType = "interac_present"
+	PaymentMethodTypeKlarna           PaymentMethodType = "klarna"
 	PaymentMethodTypeOXXO             PaymentMethodType = "oxxo"
 	PaymentMethodTypeP24              PaymentMethodType = "p24"
 	PaymentMethodTypeSepaDebit        PaymentMethodType = "sepa_debit"
@@ -178,6 +179,18 @@ type PaymentMethodIdealParams struct {
 type PaymentMethodInteracPresentParams struct {
 }
 
+// Customer's date of birth
+type PaymentMethodKlarnaDOBParams struct {
+	Day   *int64 `form:"day"`
+	Month *int64 `form:"month"`
+	Year  *int64 `form:"year"`
+}
+
+// If this is a `klarna` PaymentMethod, this hash contains details about the Klarna payment method.
+type PaymentMethodKlarnaParams struct {
+	DOB *PaymentMethodKlarnaDOBParams `form:"dob"`
+}
+
 // PaymentMethodOXXOParams is the set of parameters allowed for the `oxxo` hash when creating a
 // PaymentMethod of type OXXO.
 type PaymentMethodOXXOParams struct {
@@ -225,6 +238,7 @@ type PaymentMethodParams struct {
 	Grabpay          *PaymentMethodGrabpayParams          `form:"grabpay"`
 	Ideal            *PaymentMethodIdealParams            `form:"ideal"`
 	InteracPresent   *PaymentMethodInteracPresentParams   `form:"interac_present"`
+	Klarna           *PaymentMethodKlarnaParams           `form:"klarna"`
 	OXXO             *PaymentMethodOXXOParams             `form:"oxxo"`
 	P24              *PaymentMethodP24Params              `form:"p24"`
 	SepaDebit        *PaymentMethodSepaDebitParams        `form:"sepa_debit"`
@@ -385,6 +399,16 @@ type PaymentMethodIdeal struct {
 type PaymentMethodInteracPresent struct {
 }
 
+// The customer's date of birth, if provided.
+type PaymentMethodKlarnaDOB struct {
+	Day   int64 `json:"day"`
+	Month int64 `json:"month"`
+	Year  int64 `json:"year"`
+}
+type PaymentMethodKlarna struct {
+	DOB *PaymentMethodKlarnaDOB `json:"dob"`
+}
+
 // PaymentMethodOXXO represents the OXXO-specific properties.
 type PaymentMethodOXXO struct {
 }
@@ -442,6 +466,7 @@ type PaymentMethod struct {
 	ID               string                         `json:"id"`
 	Ideal            *PaymentMethodIdeal            `json:"ideal"`
 	InteracPresent   *PaymentMethodInteracPresent   `json:"interac_present"`
+	Klarna           *PaymentMethodKlarna           `json:"klarna"`
 	Livemode         bool                           `json:"livemode"`
 	Metadata         map[string]string              `json:"metadata"`
 	Object           string                         `json:"object"`