Simulate payments to test your integration

To test your integration, simulate transactions without moving real money using special test values in a test environment. Test cards behave like fake credit cards and let you simulate:

• Successful payments (depending on the card brand or country)
• Card errors (declines, fraud, invalid data)
• Disputes and refunds

How to use test cards

For interactive testing, use a number like 4242 4242 4242 4242 in your payment form or dashboard, and:

• A valid future expiry date, such as 12/34
• Any 3-digit CVC (4 digits for American Express)
• Any value for the remaining fields

Cards that simulate successful payments

Card number	Type	Result	Expiry	CVC
4242 4242 4242 4242	Visa	Successful payment	Any future	123
4000 0056 5556 5556	Visa (debit)	Successful payment	Any future	123
5555 5555 5555 4444	Mastercard	Successful payment	Any future	123
3782 822463 10005	American Express	Successful payment	Any future	1234

Cards that simulate errors

Use these to test your error-handling logic. Each returns a card error with its decline code.

Description	Card number	Error code	Decline code
Generic decline	4000 0000 0000 0002	card_declined	generic_decline
Insufficient funds	4000 0000 0000 9995	card_declined	insufficient_funds
Lost card	4000 0000 0000 9987	card_declined	lost_card
Stolen card	4000 0000 0000 9979	card_declined	stolen_card
Expired card	4000 0000 0000 0069	expired_card	—
Incorrect CVC	4000 0000 0000 0127	incorrect_cvc	—
Processing error	4000 0000 0000 0119	processing_error	—