Short answer: Married couples with family HSA coverage can split contributions in any way they choose, as long as the combined total stays within the annual family limit and catch-up contributions go into each spouse’s own HSA.
If both spouses are HSA-eligible and covered under a family HSA-qualified high-deductible health plan, the IRS treats the annual family HSA limit as a combined household cap.
For 2026, the family HSA contribution limit is $8,750. That amount can be contributed entirely to one spouse’s HSA or divided between both spouses’ HSAs in any proportion the couple chooses.
If only one spouse has an HSA, the full family contribution may be made to that account. If both spouses have HSAs, contributions may be split, but the total across both accounts cannot exceed the family limit.
Catch-up contributions follow different rules. If a spouse is age 55 or older and HSA-eligible, that spouse may contribute an additional $1,000, but the catch-up contribution must be made to that spouse’s own HSA. Catch-up amounts cannot be pooled into one account.
When deciding how to split contributions, couples often consider factors such as account fees, investment options, employer contributions, and which spouse may be eligible for catch-up contributions.