We use the Terminal API (Connected Terminal) and completed Credit Card Surcharge onboarding in the Dashboard (3%, location M3529FJDGB5VE). Our CreateTerminalCheckout request sends device_options.allow_auto_card_surcharge: true with Square-Version 2026-01-22, and the checkout echoes it back. But no surcharge is applied on credit cards. Example: checkout n5vKqy5gg654dVCE, payment fLYdki7wQ1RyLSK3zCuveGRSvUeZY (credit Visa, $1.00, no applied_card_surcharge_details). Device 046CS149A1001350, Terminal OS 5.67.0101, app 7.18. Same symptom as forum thread 26787, which was resolved over DM. Is there an enrollment step needed for ACS on Connected Terminal?
I’ll pass this along to my colleague that answered the other thread!
Could you test again now and let me know if it works?
Please send a new checkout ID if you are still running into issues.
It also may help to bump to our latest app version on the device-
- Swipe in from the left edge to open the menu.
- Go to Settings → Hardware → General → About Terminal.
- Check for and install any available software updates.
Keep the Terminal connected to the internet and plugged into power, and do this when it isn’t processing a payment.
After updating, check the OS and app versions on that screen, then rerun the surcharge test.
That fixed it, just a simple update to the Terminal. Thanks so much guys.