diff --git a/src/controller/checkout.controller.ts b/src/controller/checkout.controller.ts
index ab46382f..08b70806 100644
--- a/src/controller/checkout.controller.ts
+++ b/src/controller/checkout.controller.ts
@@ -28,6 +28,7 @@ export function checkoutController(usersService: UsersService, paymentsService:
         postalCode: string;
         captchaToken: string;
         companyVatId?: string;
+        metadata?: Record<string, string>;
       };
     }>(
       '/customer',
@@ -45,6 +46,10 @@ export function checkoutController(usersService: UsersService, paymentsService:
               postalCode: { type: 'string' },
               captchaToken: { type: 'string' },
               companyVatId: { type: 'string' },
+              metadata: {
+                type: 'object',
+                additionalProperties: { type: 'string' },
+              },
             },
           },
         },
@@ -57,8 +62,17 @@ export function checkoutController(usersService: UsersService, paymentsService:
       },
       async (req, res): Promise<{ customerId: string; token: string }> => {
         let customerId: Stripe.Customer['id'];
-        const { customerName, lineAddress1, lineAddress2, city, country, postalCode, companyVatId, captchaToken } =
-          req.body;
+        const {
+          customerName,
+          lineAddress1,
+          lineAddress2,
+          city,
+          country,
+          postalCode,
+          companyVatId,
+          captchaToken,
+          metadata,
+        } = req.body;
         const { uuid: userUuid, email } = req.user.payload;
 
         const verifiedCaptcha = await verifyRecaptcha(captchaToken);
@@ -80,6 +94,7 @@ export function checkoutController(usersService: UsersService, paymentsService:
               postalCode,
               country,
             },
+            metadata,
           });
           customerId = userExists.customerId;
         } else {
@@ -93,6 +108,7 @@ export function checkoutController(usersService: UsersService, paymentsService:
               postalCode,
               country,
             },
+            metadata,
           });
 
           await usersService.insertUser({
diff --git a/src/infrastructure/adapters/stripe.adapter.ts b/src/infrastructure/adapters/stripe.adapter.ts
index e86a6a00..2983ef42 100644
--- a/src/infrastructure/adapters/stripe.adapter.ts
+++ b/src/infrastructure/adapters/stripe.adapter.ts
@@ -70,6 +70,7 @@ export class StripePaymentsAdapter implements PaymentsAdapter {
           postal_code: params.address.postalCode ?? undefined,
         },
       }),
+      ...(params.metadata && { metadata: params.metadata }),
     };
   }
 }
diff --git a/src/infrastructure/domain/entities/customer.ts b/src/infrastructure/domain/entities/customer.ts
index f12dda25..39daa8d8 100644
--- a/src/infrastructure/domain/entities/customer.ts
+++ b/src/infrastructure/domain/entities/customer.ts
@@ -7,6 +7,7 @@ export interface CreateCustomerParams {
   name: string;
   email: string;
   address: Partial<Address>;
+  metadata?: Record<string, string>;
 }
 
 export interface UpdateCustomerParams extends Partial<CreateCustomerParams> {
diff --git a/tests/src/infrastructure/adapters/stripe.adapter.test.ts b/tests/src/infrastructure/adapters/stripe.adapter.test.ts
index 97e9bbaa..fa9c8998 100644
--- a/tests/src/infrastructure/adapters/stripe.adapter.test.ts
+++ b/tests/src/infrastructure/adapters/stripe.adapter.test.ts
@@ -14,6 +14,8 @@ describe('Stripe Adapter', () => {
         .spyOn(stripePaymentsAdapter.getInstance().customers, 'create')
         .mockResolvedValue(mockedCustomer as Stripe.Response<Stripe.Customer>);
 
+      const metadata = { referralCode: 'ABC123' };
+
       const createdCustomer = await stripePaymentsAdapter.createCustomer({
         email: mockedCustomer.email as string,
         name: mockedCustomer.name as string,
@@ -25,6 +27,7 @@ describe('Stripe Adapter', () => {
           country: mockedCustomer.address?.country ?? '',
           postalCode: mockedCustomer.address?.postal_code ?? '',
         },
+        metadata,
       });
 
       expect(createdCustomer).toStrictEqual(Customer.toDomain(mockedCustomer));