The determination of whether you over funded the HSA is not based on your filing status, but is based on whether you marked that you had a family HDHP (high deductible health plan) for the full year. Go back to the Medical section of TurboTax related to your HSA entry and continue through the screens until you are asked about contributions and then a screen where you are asked if you were covered by a HDHP, and then what type of HDHP. Make sure that the Family Plan option is marked. See a sample screenshot below:
Below are steps to be brought back to the HSA entry section of TurboTax:
- Open (continue) your return in TurboTax, if you don't already have it open.
- From the upper right menu, search for 1099-sa or 1099sa (don't use the upper-case SA).
- Select the Jump to link at the top of the search results.