IRS HSA Rules for Married Couples: Limits, FSAs, and Medicare

The IRS treats every Health Savings Account as individually owned, so married couples never share an HSA, but they often share a contribution limit. If either spouse has family High Deductible Health Plan coverage in 2026, the two of you split a single $8,750 cap between your separate accounts; if you each carry self-only HDHP coverage, you each get your own $4,400 limit with no coordination required.¹ The rules for eligibility, catch-ups, spending, and reporting all have married-couple wrinkles, and most of the mistakes couples make trace back to the same handful of them.

Each Spouse’s Eligibility Is Judged Separately

To contribute to an HSA, you personally must be enrolled in a qualifying HDHP and have no disqualifying other health coverage. Your spouse’s situation matters only to the extent it reaches you.

The most common way it reaches you: your spouse’s non-HDHP plan covers you. If your spouse has a traditional PPO or HMO through their employer and you’re listed as a covered dependent, you lose HSA eligibility even when you also have your own HDHP. You don’t lose eligibility just because your spouse has a non-HDHP plan. You lose it only if that plan covers you. Declining coverage under the non-HDHP plan restores your eligibility.²

Medicare enrollment ends HSA contribution eligibility for the enrolled spouse. Existing HSA funds remain available for qualified expenses; new contributions to that spouse’s account stop.

Your Spouse’s FSA Can Quietly Disqualify You

This is the trap that catches the most couples. A general-purpose health Flexible Spending Account at your spouse’s job can reimburse your medical expenses too, which counts as disqualifying non-HDHP coverage for you. The IRS treats a general-purpose health FSA as “other health coverage” that blocks HSA contributions, and it doesn’t matter whether you ever actually file a claim against it.²

A limited-purpose FSA, which only reimburses dental and vision expenses, is fine. Your spouse can keep one without affecting your HSA eligibility. The same distinction applies to Health Reimbursement Arrangements: a general-purpose HRA disqualifies, while limited-purpose or post-deductible HRAs do not.²

2026 Contribution Limits and How Couples Split Them

Two rules cover almost every married couple:

If both of you have self-only HDHP coverage, you each get your own $4,400 limit. The limits are independent.¹
If either spouse has family HDHP coverage, both spouses are treated as having family coverage and share a single $8,750 limit for 2026. That combined cap applies even if only one of you is actually enrolled in the family plan.

The shared family limit can be split between your two HSAs in any ratio you agree on: 50/50, 100/0, or anything in between. If each of you has family coverage under a separate plan, the combined limit is still $8,750, and it’s split equally unless you agree otherwise.²

Employer HSA deposits count toward these limits. Before deciding how much each of you will contribute out of pocket, add up any employer contributions going into either HSA, then divide the remaining room. Missing this step is one of the easiest ways to create an accidental excess.³

Catch-Up Contributions After Age 55

A spouse who is 55 or older by year-end and not enrolled in Medicare can add an extra $1,000 on top of the regular limit. The catch-up is personal: it belongs to the eligible spouse and must go into that spouse’s own HSA. You cannot deposit your spouse’s $1,000 catch-up into your account.⁴

When both spouses are 55 or older and covered by a family HDHP in 2026, the household maximum is $10,750: the $8,750 family limit plus $1,000 for each spouse in their own account. If only one of you has turned 55, the maximum is $9,750. A couple relying on a single HSA leaves the second catch-up on the table if both qualify.

When One Spouse Enrolls in Medicare

Turning 65 triggers automatic Medicare Part A enrollment for most people already receiving Social Security. That spouse can no longer contribute to an HSA, but the other spouse can. If the younger spouse stays on a family HDHP, they can still contribute up to the full $8,750 family maximum — the couple just can’t put any of it into the Medicare-enrolled spouse’s account.²

The Medicare-enrolled spouse’s existing balance keeps its tax treatment. They can still use it tax-free for qualified medical expenses, including Medicare premiums other than Medigap. Couples with an age gap sometimes direct all new contributions into the younger spouse’s HSA for years after the older spouse enrolls in Medicare.²

Paying a Spouse’s Medical Expenses

Either spouse can use their HSA to pay the other spouse’s qualified medical expenses, regardless of who owns the account, who has the HDHP, or who earned the money. The same is true for qualified dependents. It works even when the spouse whose expenses are being paid isn’t HSA-eligible themselves.⁵

Qualified expenses cover a wide range of medical, dental, and vision costs as defined in IRS Publication 502.⁶ HSA funds can also cover certain premiums that generally don’t qualify: COBRA continuation coverage, health insurance while receiving unemployment benefits, and, once the account holder turns 65, Medicare premiums other than Medigap.²

Using HSA money for anything other than qualified expenses before age 65 triggers income tax plus a 20% penalty. After 65, the penalty goes away, and non-qualified withdrawals are taxed as ordinary income.²

Fixing Excess Contributions

When a couple’s combined contributions exceed the applicable limit, the IRS charges a 6% excise tax on the excess for every year it stays in the account. The tax hits the HSA owner whose account holds the excess.⁷

You can avoid the penalty by withdrawing the excess (plus any earnings on it) before the tax filing deadline, including extensions. If you already filed and then noticed the overage, you have up to six months after the original due date, excluding extensions, to withdraw the excess and file an amended return. The withdrawn earnings are taxable in the year you received them, but the recurring 6% penalty stops.⁴

Filing Form 8889 as a Couple

Every spouse who has any HSA activity during the year — contributions, distributions, or both — files a separate Form 8889 with the tax return. This is required even if that spouse has no other filing obligation.⁴

Filing jointly, each spouse completes their own Form 8889, and the deductions from line 13 of both forms combine on Schedule 1 of Form 1040. Both forms attach to the joint return.⁴

Filing separately doesn’t let either spouse ignore the other’s contributions. If either of you has family HDHP coverage, you still share the $8,750 family limit and need to coordinate to stay under it. Each spouse files their own Form 8889 and deducts only contributions to their own HSA.² Couples in community property states filing separately may need to split contributions and deductions equally regardless of which spouse actually made the deposit; IRS Publication 555 covers the allocation rules.

Divorce and Inheritance

Because every HSA is individually owned, both events turn on the account holder’s name.

In a divorce, HSA assets can move from one spouse to the other under a divorce or separation agreement without tax or penalty. The funds keep their HSA status in the receiving spouse’s name.⁵

At death, what happens depends on who inherits:

A surviving spouse named as beneficiary automatically takes over the HSA as their own. No tax is owed, and the spouse can contribute, invest, and withdraw for qualified expenses just as the original owner could.
A non-spouse beneficiary receives what is no longer an HSA. The account’s full fair market value as of the date of death becomes taxable income to the beneficiary that year, reduced by any qualified medical expenses of the deceased that the beneficiary pays within one year of the death. No early withdrawal penalty applies.⁵

Naming a spouse as beneficiary preserves every tax advantage the account carries. A non-spouse beneficiary effectively receives a lump-sum taxable distribution.

California and New Jersey Don’t Follow Federal Treatment

The federal triple tax advantage isn’t universal at the state level. California and New Jersey do not recognize the federal HSA tax exemption. In those two states, employer and employee HSA contributions are taxable income for state purposes, and investment growth inside the account is also subject to state tax. Every other state with an income tax follows federal HSA treatment. If you or your spouse lives or works in California or New Jersey, the federal benefits still apply, but your state return won’t mirror them, and that’s worth factoring into how aggressively you fund the account.

1
IRS. Revenue Procedure 2025-19
2
Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
3
Internal Revenue Service. IRS Courseware – HSA Contributions
4
Internal Revenue Service. Instructions for Form 8889 (2025)
5
Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts
6
Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
7
Office of the Law Revision Counsel. 26 USC 4973 – Tax on Excess Contributions