7 min read ยท Last updated September 16, 2026
- A health savings account (HSA) can transfer to a former spouse tax-free under Internal Revenue Code (IRC) Section 223(f)(7), but only when the divorce decree or a written instrument tied to it specifically directs the transfer.
- A flexible spending account (FSA) cannot be divided or transferred to a former spouse under any decree language. It’s an unfunded benefit tied to one employee, with no mechanism to assign or split it. The Internal Revenue Service (IRS), in its own Publication 969, describes FSAs as generally “use-it-or-lose-it.”
- An FSA is “use-it-or-lose-it”: your employer isn’t permitted to refund any unused balance to you, let alone to someone who is no longer your dependent.
- Doing an HSA split the wrong way, a cash withdrawal instead of a documented transfer, can trigger ordinary income tax plus a 20% additional tax if the account holder is under 65.
A health savings account can move to a former spouse tax-free under IRC Section 223(f)(7), but only through a trustee-to-trustee transfer that the divorce decree specifically directs. A flexible spending account cannot be divided at all under any decree language. It’s an unfunded employer benefit tied to a single employee. IRS Publication 969 describes FSAs as generally “use-it-or-lose-it.”
In this article
- What the next 24 hours require
- The account that can move, and the one that can’t
- The mistake that costs people the most money
- What to do at 30, 60, and 90 days
- Frequently asked questions
Holly’s decree divided the 401(k) with a qualified domestic relations order (QDRO), the court order that tells a retirement plan how to split an account between former spouses, and put the house on a 90-day buyout clock. It said nothing at all about either spouse’s pre-tax health accounts, because nobody in the negotiation realized those accounts follow two completely different sets of federal rules.
What the next 24 hours require
Pull the current balance on both accounts the day the decree is signed, not the day the divorce was filed months earlier. Balances move constantly as claims process and payroll contributions land, and the figure that matters for a split is the one on the effective date your decree actually names.
If your decree is silent on the HSA and FSA, the same way Holly’s was, don’t assume that’s an oversight you can fix informally later. Go back to your attorney before the decree is finalized if at all possible. The HSA can still be transferred correctly, but only with the right written language in the decree itself, not with a verbal agreement or a side letter after the fact.
The account that can move, and the one that can’t
A health savings account is legally the account holder’s own individual property, similar to an Individual Retirement Account (IRA). That’s exactly why the Internal Revenue Code has a rule for moving it in a divorce. Under IRC Section 223(f)(7), transferring an individual’s interest in an HSA to a spouse or former spouse under a divorce or separation instrument is not treated as a taxable transfer, and the account keeps its status as an HSA for the receiving spouse going forward. In practice, that protection only holds up if the movement is a direct, trustee-to-trustee transfer authorized by the decree’s own language, not a withdrawal followed by a handoff, because a cash withdrawal is easily reclassified as an ordinary taxable distribution instead of a protected transfer.
Holly’s HSA held $9,400 on the date of the decree. Her attorney amended the decree to specify “50% of the HSA balance as of September 16, 2026, transferred trustee-to-trustee to her ex-husband Derek’s HSA.” That produced a clean $4,700 split to each account, tax-free to both. The transfer language matched the statute’s own requirement.
A flexible spending account works nothing like that. It’s an unfunded employer benefit tied to the employee who elected it, not an asset the employee personally owns, and it can’t be assigned, sold, or split between two people under any decree language. IRS Publication 969 describes FSAs as generally “use-it-or-lose-it.” Unused amounts at the end of the plan year generally can’t carry over, except through a limited grace period or a capped carryover the plan itself allows. Your employer isn’t permitted to refund any part of an unused balance to you, which forecloses splitting it with anyone else by definition.
| Question | Health savings account (HSA) | Flexible spending account (FSA) |
|---|---|---|
| Can it be split in a divorce? | Yes, if the decree specifically directs a trustee-to-trustee transfer | No, under any decree language |
| Who legally owns the account? | The individual account holder | The employer holds the unfunded benefit; the employee is the sole eligible user |
| What happens to an unused balance | Stays with the account, grows, never expires | Forfeited at plan year end unless a grace period or capped carryover applies |
| Tax risk of doing it the wrong way | Ordinary income tax, plus a 20% additional tax under 65, if done as a withdrawal instead of a decree-directed transfer | Not applicable; there is no transfer mechanism to get wrong |
The mistake that costs people the most money
The mistake that costs the most: an account holder who wants to “get their ex their half” of an HSA simply withdraws cash and hands it over. That’s not a transfer incident to divorce under the statute; it’s an ordinary distribution. If the money isn’t spent on the account holder’s own qualified medical expenses, it becomes taxable income to the account holder, plus a 20% additional tax if that person is under 65.
The decree’s transfer language, and a real trustee-to-trustee movement, is what keeps the split tax-free. A cash handshake is not.
The second mistake, the one that caught Holly, is assuming an FSA balance is like any other joint account that a decree can simply assign a percentage of. It isn’t. Once the divorce is final, a former spouse generally stops qualifying as a tax dependent for the FSA-holding spouse’s health FSA. That means only the account-holding spouse, and their remaining tax dependents, can even submit claims against what’s left. The $6,200 in Holly’s ex-husband’s FSA wasn’t hers to claim under the decree at all. It was his to spend down, or lose, entirely on his own qualifying expenses before the plan year and any grace period ran out.
What to do at 30, 60, and 90 days
30 days. Confirm with the HSA custodian, in writing, that they’ve received the decree language and processed the trustee-to-trustee transfer. Get a confirmation showing the new balance on the receiving spouse’s own account, not just a promise that it’s “in progress.”
60 days. If you’re the spouse losing access to a former partner’s FSA, check whether you have any dependent-care or medical claims that were incurred before the divorce was final. Those may still be reimbursable even after your dependent status changes, but only if submitted before the plan’s own filing deadline.
90 days. Confirm the HSA transfer shows up correctly on both spouses’ next account statements and that neither party reports it as a taxable distribution on their own tax paperwork. A transfer that was done correctly under the statute should never generate a Form 1099-SA, the tax form an HSA custodian issues to report a distribution, showing a taxable distribution to the original account holder.
Frequently asked questions
Does our decree need to mention a specific dollar amount for the HSA, or can it just say “split equally”? Either can work, but “split equally” language should specify the effective date the balance is measured on and require a trustee-to-trustee transfer, not a withdrawal. Vague language is what causes custodians to reject or delay these transfers.
What if the decree already went final and never mentioned the HSA at all? You may still be able to go back to court for a post-decree order or a supplemental instrument authorizing the transfer, since the statute allows a “written instrument incident to” the divorce, not only the original decree itself. Talk to your attorney before attempting any transfer without updated documentation.
Can a dependent care FSA be handled the same way as a health FSA in divorce? The same non-transferability applies, since it’s also an unfunded employer benefit tied to one employee, but the tax mechanics around who can still claim which expenses differ by account type, so confirm the specific rules for your plan with your employer’s benefits administrator.
Does the receiving spouse need their own HSA account already open to receive a transfer? Yes. A trustee-to-trustee HSA transfer moves funds into the receiving spouse’s own HSA, so they need an account open and eligible to receive it before the custodian can process the transfer.
Is there a deadline for completing the HSA transfer after the decree is signed? The statute itself doesn’t set a hard deadline, but delaying increases the risk that account balances shift, custodians lose track of the original decree language, or one spouse spends down the balance before the transfer is processed. Move on it within the first 30 days.
Related reading: how a QDRO splits a retirement account within 90 days of the decree, why a divorce decree alone doesn’t change a 401(k) beneficiary, and how the decree affects your tax filing status and Form 8332 cover the other accounts a decree typically touches.
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