Use the credentials and test card numbers below to simulate payments in the sandbox environment. These only work in sandbox — use the Sandbox Dashboard and sandbox API keys. See the Sandbox Environment guide for setup details.
Card
Use these test cards to simulate successful and failed card payments in sandbox checkout.
Success
| Card | Card Number | Expiry | CSC |
|---|
| Mastercard | 5555 5555 5555 4444 | Any future date | Any 3-digit code |
Failure
| Card | Card Number | Expiry | CSC |
|---|
| Visa | 4000 0000 0000 0002 | Any future date | Any 3-digit code |
Card Installments
Use this test card to simulate a successful Card Installments payment in sandbox.
| Card | Card Number | Expiry | CSC |
|---|
| Mastercard | 5444 4444 4444 4445 | Any future date | Any 3-digit code |
Klarna
Use these credentials when prompted during Klarna checkout in sandbox.
| Label | Value | Details |
|---|
| Phone Number | (888) 254-4887 | Enter this phone number when prompted for Klarna login |
| OTP (One-Time Password) | 123456 | Use any 6-digit number as OTP when prompted (e.g., 123456, 000000) |
PayPal
Use these credentials to test PayPal payments in sandbox.
| Label | Value | Details |
|---|
| Email | test@xpaycheckout.com | Login email for PayPal sandbox account |
| Password | xpay@2468 | Password for PayPal sandbox account |
| Test Cards Portal | PayPal sandbox card testing | PayPal developer portal for managing test cards |
These are sandbox-only credentials. Never use them in production or share them outside your testing workflow.
