Last updated: Mar 31, 2026, 9:13 AM
Learn how to quickly diagnose issues if your card reader isn't working, and discover simple steps to test different USB ports to find a solution.
Below are the steps on how to troubleshoot the Toast Tap® card reader.
Back to top
If your Toast Tap™ card reader isn't working as expected, these steps can help you identify and fix common issues:
If you're experiencing issues processing payments with your Toast Tap™, switching to another USB port on your Toast Flex terminal can often help. Here’s how to do it safely:
If you've tried all available USB ports and are still experiencing issues, please contact for assistance.
If the Toast Tap™ has passed the troubleshooting steps above, and isn’t damaged, but can’t yet process payments, follow the steps below to test payment using a card reader test app on your device.