Yes — every dollar, every year, forever, with no deadline and no employer claim on it. Here's what actually happens at year-end, and the four things people confuse it with.
The single most searched question about health savings accounts is whether the money disappears at the end of the year.
It does not. Every dollar in an HSA rolls over into the next year, automatically, forever. There is no deadline, no expiry, no forfeiture, and no action required on your part. You do not need to spend it, claim it, or tell anyone.
That is the whole answer. The rest of this page is about why so many people expect the opposite, and about the four things that do change on 1 January — none of which touch your balance.
Because of the FSA.
A Flexible Spending Account looks similar from the outside: pre-tax money, a debit card, medical expenses. But an FSA is use-it-or-lose-it. Depending on what your employer elected, unspent FSA money either vanishes at year-end, or carries over up to a capped amount, or gets a short grace period into the new year. That is why every December there is a rush to spend down FSA balances on glasses and sunscreen.
HSAs have none of that. The confusion is entirely reasonable and entirely misplaced — the two accounts are governed by different parts of the tax code and behave in opposite ways. We laid the differences out side by side in HSA vs FSA.
The second source of confusion is the word "rollover" itself, which in HSA language means something else: moving your account from one custodian to another. That is a specific transaction with a 60-day deadline and a once-per-12-months limit, and it has nothing to do with year-end. See HSA rollover vs transfer if that is what you were actually looking for.
It is not a process. Nothing moves. On 31 December your balance is whatever it is, and on 1 January it is the same number, in the same account, invested in the same things.
Three consequences worth being explicit about:
The money is yours, not your employer's. An HSA is individually owned, like an IRA. If your employer contributed to it, those contributions are yours immediately — there is no vesting. Leave the job and the account comes with you.
It survives losing eligibility. To contribute to an HSA you must be covered by a qualifying high-deductible health plan. To keep and spend one, you need nothing at all. Switch to a traditional plan, go on Medicare, retire, leave the country — the balance stays and remains spendable on qualified expenses, tax-free.
It compounds. This is the actual point. Because nothing forces you to spend, an HSA is the only account in the tax code that is untaxed going in, untaxed while it grows, and untaxed coming out for medical costs. Leaving the balance alone for decades is a deliberate strategy, not neglect — see the triple tax advantage and the shoebox strategy.
Your balance carries. These do not.
1. The contribution limit. A new annual maximum applies each calendar year, and unused contribution room does not carry forward. If you were eligible all year and contributed nothing, that year's allowance is gone. See 2026 limits and 2027 limits.
2. Your plan's deductible and out-of-pocket maximum. Those are insurance terms, not HSA terms, and they usually reset with the plan year. Your HSA balance is unaffected either way.
3. Whether you are eligible to contribute. Open enrollment may have moved you onto a different plan. If the new plan is not HSA-qualified, contributions stop on the date coverage changes — the account itself does not.
4. The prior-year contribution window closes. You can contribute for a given tax year up until that year's tax filing deadline, usually mid-April. That is the one genuine year-end-ish deadline in the HSA world, and it is a deadline to add money, not to spend it.
No. There is no reason to, and there is a good reason not to.
Every dollar you spend from the HSA is a dollar that stops growing tax-free. If you can afford to pay a medical bill out of pocket, paying it from cash and leaving the HSA invested is almost always the stronger move — and you can reimburse yourself for that expense later, with no time limit, provided the expense was incurred after your HSA was opened and you kept the receipt.
That last clause is the whole catch, and it is the reason this site exists. A reimbursement you claim in 2041 for a 2026 root canal is perfectly legal and entirely dependent on your still having proof. How long to keep HSA receipts covers what "proof" means to the IRS, and how to reimburse yourself covers the mechanics.
Does my employer's contribution roll over too? Yes. Once it lands in your HSA it is indistinguishable from your own money and is yours permanently.
What if I have money left and switch to a non-HSA plan? The balance stays and stays spendable. You simply cannot add to it while you lack qualifying coverage.
What if I leave the job? The account is yours. You may start paying a monthly maintenance fee your employer was covering, which is a common reason to move the account — see rollover vs transfer.
Does it roll over if I die? It passes to your named beneficiary, and the tax treatment depends entirely on who that is — a spouse inherits it as their own HSA, anyone else receives a taxable lump sum. This is the single most overlooked form on the account. See HSA beneficiary rules.
Is there any situation where I lose HSA money? Three: an excess contribution left uncorrected, a non-qualified withdrawal before 65 (income tax plus a 20% penalty), and custodian fees quietly draining a small forgotten balance. None of them are year-end events.