Use these test card numbers in test mode to simulate different payment scenarios: Scenario Card Number Exp Date CVC Result Successful Payment 4242 4242 4242 4242 Any future date Any 3 digits ✓ Payment succeeds Card Declined 4000 0000 0000 0002 Any future date Any 3 digits ✗ Card declined Requires 3D Secure 4000 0000 0000 3220 Any future date Any 3 digits ⚠ Additional verification Insufficient Funds 4000 0000 0000 9995 Any future date Any 3 digits ✗ Insufficient funds