What Happens to HSA Funds When You Die: Beneficiary and Tax Rules

What happens to an HSA when you die comes down to one line on a form: the beneficiary designation. If you named your spouse, the account stays an HSA and keeps every tax advantage. If you named someone else, the account stops being an HSA on the date of death and the full balance becomes taxable income to that person. If you named no one, the balance lands on your final tax return, which is usually the costliest outcome of the three.¹

If Your Spouse Is the Beneficiary

A surviving spouse simply takes over the HSA. Same account, same rules, same triple tax advantage, and no taxable event on the transfer itself.² Ownership shifts as of the date of death provided the spouse is named on the account. Withdrawals for qualified medical expenses remain tax-free, the balance keeps compounding, and the spouse reports the inherited HSA on Form 8889 as though it had always been theirs.³

One thing changes: normal HSA penalty rules now apply to the spouse. Withdrawing money for anything other than a qualified medical expense before age 65 means ordinary income tax on the amount plus the standard 20% additional tax. That extra tax goes away at 65 or upon disability.¹

If a Non-Spouse Individual Is the Beneficiary

When an adult child, sibling, friend, or any other individual inherits the account, the HSA ceases to exist on the date of death. The entire fair market value on that date becomes taxable income to the beneficiary in that tax year.² There is no way to stretch the distribution or preserve the tax-advantaged status. The full balance hits the beneficiary’s return at once.

One piece of relief: the 20% additional tax that normally punishes non-qualified HSA distributions does not apply to distributions caused by death.¹ The beneficiary owes ordinary income tax on the amount, but no penalty on top.

Paying the Decedent’s Medical Bills to Cut the Tax

A non-spouse beneficiary can shrink the taxable amount by paying qualified medical expenses the account holder incurred before death, as long as the beneficiary pays them within one year of the date of death. Every dollar of qualifying expense reduces the taxable amount by a dollar.² Terminal illness often leaves behind sizable unpaid bills, so this is worth checking carefully.

Keep documentation showing the expenses were qualified, hadn’t been reimbursed elsewhere, and weren’t claimed as an itemized deduction. Those records don’t get filed with the return; they need to exist if the IRS asks.¹

Reporting the Inherited Amount

The custodian issues a Form 1099-SA showing the fair market value as of the date of death. The beneficiary files Form 8889 with their own return, writes “Death of HSA account beneficiary” across the top, skips Part I, and enters the date-of-death value on line 14a. Any qualifying medical expenses paid within the one-year window go on line 15. Earnings the account generates between the date of death and the date of distribution are also taxable to the beneficiary.³

If No Beneficiary Is Named, or the Estate Is Named

Naming the estate, or naming no one at all, produces the worst tax result. The HSA ends on the date of death and the full fair market value gets included as taxable income on the decedent’s final Form 1040.¹ That income stacks on top of whatever the decedent already earned that year, often pushing the final return into a higher bracket.

The executor reports the balance on the final return. And unlike the non-spouse individual scenario, there is no offset available for paying the decedent’s outstanding medical bills. The full balance is taxed.²

There’s a second problem. HSA funds that fall to the estate become part of probate, exposing them to creditor claims and administrative delay. Naming any individual beneficiary, even a non-spouse, avoids probate entirely because beneficiary designations pass outside the will.

Trusts and Charities as Beneficiaries

Nothing stops you from naming a trust, charity, or other entity, but the tax treatment tracks the non-spouse rules: the account ceases to be an HSA on the date of death and the fair market value becomes gross income to the entity.²

For a trust, that income belongs to the trust, and trusts reach the top federal income tax bracket at a much lower threshold than individuals. Naming a revocable living trust may make sense for control reasons, but it usually costs more in tax than leaving the account directly to the trust’s beneficiaries.

A 501(c)(3) charity is the opposite case. The income inclusion technically applies, but a tax-exempt charity owes no income tax on it, so the balance passes without a tax bill for anyone. If charitable giving is part of your plan and you have other assets to leave heirs, directing the HSA to a charity is one of the most tax-efficient moves available.

Second-Order Tax Effects for Non-Spouse Heirs

A lump-sum HSA death distribution doesn’t only create an income tax bill. It inflates the beneficiary’s adjusted gross income for the whole year, and that can trigger consequences people rarely see coming.

Social Security Becomes More Taxable

The HSA distribution counts toward the combined-income formula that determines how much of a beneficiary’s Social Security is taxable. Someone who normally pays tax on 50% of their benefits may find themselves paying tax on 85% in the year the HSA comes in. On a $50,000 balance, that shift alone can add thousands in tax.

Medicare Premium Surcharges

Medicare Part B and Part D premiums rise with modified adjusted gross income under the Income-Related Monthly Adjustment Amount (IRMAA). Because IRMAA is based on the return from two years earlier, a large HSA death distribution received in 2026 can raise Medicare premiums in 2028. The surcharges can add hundreds of dollars per month.

No Step-Up in Basis

Inherited brokerage accounts and real estate normally get a basis step-up that erases unrealized gains at death. HSAs don’t. The entire fair market value is ordinary income, not capital gain, no matter what the account held or how much it appreciated. Stocks and funds inside the account get no basis adjustment.

State Income Tax

Most states follow federal HSA treatment, but a small number never conformed to the federal HSA provisions and don’t recognize the tax advantages at all. In those states, even a surviving spouse’s inherited HSA may be treated differently at the state level. If the decedent or beneficiary lives in a non-conforming state, get advice from a tax professional who knows that state’s rules.

The Section 691(c) Deduction for Large Estates

If the HSA passes to a non-spouse beneficiary and the estate is also large enough to owe federal estate tax, the beneficiary may qualify for an income tax deduction under Section 691(c). The HSA counts as income in respect of a decedent, and the deduction offsets some of the double taxation that occurs when the same asset is hit by both estate tax and income tax.⁴ The statute grants this deduction to any person other than the decedent or surviving spouse who includes HSA amounts in gross income after death.² With the federal estate tax exemption above $13 million, this only matters for very large estates, but when it applies it can meaningfully reduce the income tax hit.

Claiming an Inherited HSA

The process starts with the custodian, meaning the bank, brokerage, or HSA administrator holding the account. Nothing moves until they have formal notice of the death and the paperwork they require.

Every custodian asks for a certified death certificate and a completed beneficiary claim form. From there, requirements vary by beneficiary type:

A surviving spouse typically has the account retitled into their name or has the balance moved to their existing HSA. Moving the funds to an HSA at a different institution requires a transfer request form.
A non-spouse individual receives cash after the custodian liquidates any invested assets, plus a Form 1099-SA reflecting the distribution and the date-of-death value.
An estate must provide letters testamentary or equivalent proof of authority and the estate’s employer identification number. Some custodians accept a small-estate affidavit instead of full probate if the estate qualifies under the applicable state threshold.⁵

Processing runs from a few weeks to a few months. Cash-only accounts move faster than accounts holding investments, which must be liquidated first. The taxable amount is locked in as of the date of death regardless of what the markets do while the distribution is being processed.

Keep the Beneficiary Form Current

HSA beneficiary designations override your will, so even a well-drafted estate plan won’t send these funds where you want them if the form on file says otherwise or is blank. That single line does more to determine the tax outcome than anything else about the account.

Most custodians let you name both primary and contingent beneficiaries and assign percentages. A contingent beneficiary inherits only if every primary beneficiary has predeceased you. Review the designation after marriage, divorce, a birth, or a death in the family; outdated forms produce results no one intended.

If you have a spouse and want to keep the HSA’s tax advantages alive, name them as primary beneficiary. If you’re leaving the account to a non-spouse, consider which heir sits in the lower tax bracket, because that person will net more from the same balance. And if charitable giving matters to you, directing the HSA to a 501(c)(3) while sending more tax-friendly assets to family often produces the lowest overall tax burden.

HSAs have no lifetime required minimum distributions, so these accounts can grow for decades. The bigger the balance, the more the beneficiary form matters. A $100,000 HSA left to a non-spouse in the 32% federal bracket produces $32,000 in federal income tax alone, before state tax and the knock-on effects on Medicare. A few minutes updating the form can save an heir thousands.

1
Internal Revenue Service. Publication 969 – Health Savings Accounts and Other Tax-Favored Health Plans
2
Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts
3
Internal Revenue Service. Instructions for Form 8889 – Health Savings Accounts
4
Office of the Law Revision Counsel. 26 USC 691 – Recipients of Income in Respect of Decedents
5
Fidelity. HSA Distribution for an Estate, Trust, Individual with a Guardian or Conservator, or Entity Beneficiary