| Situation | Combined limit | Notes |
|---|---|---|
| Family HDHP covers both, both under 55 | $9,000 | Split any way; one or both can open an HSA |
| Family HDHP, one spouse 55+ | $10,000 | The older spouse’s catch-up goes in their own HSA |
| Family HDHP, both 55+ | $11,000 | Two HSAs are needed to use both catch-ups |
| Each spouse has a separate self-only HDHP | $9,000 | $4,500 each, no sharing |
| One spouse has an HDHP and the other has a general-purpose FSA through work | Depends | The FSA can make the HDHP spouse’s limit and eligibility more complicated; check Pub. 969 |
Worked example
Spouses A and B (both 40) are covered by one family HDHP. Employer A deposits $1,000 into A’s HSA. The couple’s limit is $9,000, so the remaining room across both accounts is $8,000. They could put all $8,000 in A’s HSA, or split it, such as $2,000 from A and the rest from B. Contributions beyond the shared limit are subject to a 6% excise tax each year until removed.
If A is 56 and B is 52, the family limit is $10,000; A’s $1,000 catch-up must be in A’s HSA.
Why a joint account is not allowed
HSAs belong to one person. A couple can pay each other’s qualified medical expenses from either account, but the accounts and the catch-up contributions stay individual.
Source: IRS Publication 969; IRC section 223(b)(5). Checked October 18, 2026.
Related: family vs self-only · HSA at 55 · HSA vs PPO for a couple.
This is general information, not tax or insurance advice. Confirm details with your plan documents, the IRS and a qualified professional.
General education, not insurance, tax or legal advice. Figures from IRS and HHS publications; confirm with your plan documents.