If you have other income due to excess HSA contribution, make sure you didn't accidentally re-enter the amount already listed (from box 12 of your W-2) in the HSA section. This will incorrectly double your total contribution amount.
To revisit the HSA section to check your entries:
- Open or continue your return.
- Navigate to the HSA section:
- TurboTax Online/Mobile: Go to HSA.
- TurboTax Desktop: Search for hsa and select the Jump to link.