What did you enter for your insurance coverage? A Family HDHP plan? For all 12 months? If you did, TurboTax would have no way of knowing what other coverage you had.
May I assume that you are 55+? TurboTax would know your age.
Did you have an excess contribution in 2024? If you did not withdraw that excess before April 15 2025, then this excess would carry over to tax year 2025 as a personal contribution, which could easily trigger an excess HSA contribution.
The following is a document that I have put together to describe a number of very common reasons that the taxpayer shows an excess contribution when perhaps they shouldn't:
Why do I have an excess HSA contribution
First, did you have an excess HSA contribution carryover from 2024?
Accidentally indicating that you have an excess is a common occurrence. If one of these does not describe your situation come back and talk to us:
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One of the purposes of the HSA interview is to determine your annual HSA contribution limit.
As you probably know, the maximum limits in 2025 are:
- $4,300 - individual with self-coverage
- $8,550 - individual with family coverage
- If the HSA owner is 55 or older, then you add $1,000 to these amounts.
However, these limits assume that you were under an HDHP all year. If you left the HDHP during the year or started Medicare or had one of a number of change events, then the limit is reduced.
There are several major culprits for excess contributions (other than just actually contributing more than the limit).
First, if you did not complete the HSA interview - that is, go all the way until you are returned to the "Your Tax Breaks" page - the limit still might be set to zero, causing a misleading excess contribution message.
There are questions all the way to the end of the interview that affect the annual contribution limit.
Second, it is not unusual for taxpayers to accidentally duplicate their contributions by mistakenly entering what they perceive to be "their" contributions into the second line on the "Let's enter your HSA contributions" screen.
Normally, any employee who made contributions to his/her HSA through a payroll deduction plan has the contributions included in the amount with code "W" in box 12 on the W-2. This is on the first line on this screen (above). Don't enter the code W amount anywhere on the return other than on the W-2 page.
Third, if you weren't in HDHP coverage all 12 months, then the annual contribution limit is reduced on a per month ratio. NOTE, this means that you have to indicate when and under what type of HDHP plan you had. Be sure to answer the questions on the screen entitled "Was [name] covered by a High Deductible Health Plan in 2025?".
Fourth, if you had a carryover of excess contributions from 2024, then this carryover is applied to 2025 as a reduction to the 2025 HSA contribution limit, which could cause an excess condition in 2025 as well. But note: if you had an excess contribution in 2024 but cured it by withdrawing the excess in early 2025, then do NOT report an "overfunding" on your 2025 return.
Fifth, the Family limit ($8,550) is for the aggregate of contributions by both taxpayers, even if both taxpayers have their own HSAs. That is, one taxpayer can’t contribute $8,550 to his/her HSA and the other contribute $4,300 to the other HSA – the $8,550 limit applies to the aggregate of all HSA contributions credited to the family (in this case, the excess contributions would be $4,300).
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