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

What happens to an HSA when you die depends almost entirely on who you named as beneficiary. A surviving spouse can take over the account and keep every tax advantage intact. Anyone else — a child, sibling, friend, trust, or charity — owes ordinary income tax on the full balance in the year you die. If you named no beneficiary at all, the money lands on your final tax return, which is the most expensive outcome of the three.

If Your Spouse Is the Beneficiary

A surviving spouse gets the best treatment in the tax code for this type of account. The HSA simply becomes theirs. Same account, same rules, same triple tax advantage. There is no taxable event triggered by the transfer, and the funds continue to grow tax-free.¹ This happens automatically as of the date of death, provided the spouse is the named beneficiary on file with the custodian.

Once the spouse takes ownership, the account works exactly as it did before. Withdrawals for qualified medical expenses remain tax-free. The balance can stay invested and keep compounding. The spouse reports the inherited HSA on Form 8889, filed with their Form 1040 for the year of death, filling it out as though the account had always been theirs.²

One thing does change: the spouse is now the account holder, so normal HSA penalty rules apply going forward. Withdrawing money for something other than a qualified medical expense before age 65 means income tax on that amount plus the 20% additional tax. That penalty disappears once the spouse reaches 65 or becomes disabled.³

If a Non-Spouse Is the Beneficiary

When anyone other than a spouse inherits your HSA, the account stops being an HSA on the date of death. The entire fair market value on that date becomes taxable income to the beneficiary for that tax year.¹ There is no way to stretch the distribution over years or preserve the tax-advantaged status. The full balance hits their tax return at once.

One piece of good news: the 20% additional tax that normally applies to non-qualified HSA distributions does not apply to death distributions.³ The beneficiary owes ordinary income tax on the amount, not the penalty on top.

The HSA custodian reports the distribution on Form 1099-SA, showing the fair market value as of the date of death. The beneficiary files Form 8889 with their return, writes “Death of HSA account beneficiary” across the top, and enters the date-of-death value on line 14a. Any earnings the account produced between the date of death and the date of distribution are also taxable to the beneficiary.²

Paying the Decedent’s Medical Bills to Reduce the Tax

A non-spouse beneficiary can lower the taxable amount by paying the decedent’s outstanding medical bills. Any qualified medical expenses the account holder incurred before death, and that the beneficiary pays within one year after the date of death, reduce the taxable amount dollar for dollar.¹ This is worth checking carefully, because a final illness often leaves behind unpaid bills that can absorb a significant portion of the balance.

Keep records showing the expenses were qualified, hadn’t been reimbursed, and weren’t claimed as an itemized deduction elsewhere. These records aren’t filed with the return, but they need to exist in case of an audit.³

If You Name No Beneficiary or Your Estate

If the estate is named as beneficiary, or if no beneficiary was ever designated, the HSA ceases to exist on the date of death and the full fair market value goes on the decedent’s final Form 1040.³ This is the worst of the three outcomes because the income stacks on top of whatever the decedent already earned during their final year, potentially pushing the return into a higher bracket.

The executor reports the HSA value on the final return. Unlike the non-spouse scenario, no medical-expense offset is available when the estate is the beneficiary. The full balance is taxed.¹

The funds also become part of the probate estate, so they can be subject to creditor claims and probate delays. Naming any individual beneficiary, even a non-spouse, avoids this, because beneficiary designations bypass the will.

If a Trust or Charity Is the Beneficiary

You can name a trust, a charity, or another entity as your HSA beneficiary. The tax treatment follows the non-spouse rules: the account ceases to be an HSA on the date of death, and the fair market value is included in the beneficiary’s gross income.¹

For a trust, the trust reports the income. Trusts reach the top federal income tax bracket at a much lower threshold than individuals do, which can produce a bigger tax bill than if you had named the trust’s beneficiaries directly. A revocable living trust may make sense for control reasons, but the tax cost is real.

Naming a 501(c)(3) charity works differently. The income inclusion technically applies, but the charity is tax-exempt and owes no income tax on the distribution. The HSA passes to the charity without a tax bill for anyone. If charitable giving is a priority and you have other assets earmarked for heirs, directing the HSA to charity is one of the most tax-efficient options available.

Downstream Tax Effects for Non-Spouse Beneficiaries

A lump-sum HSA death distribution doesn’t just create an income tax bill. It inflates the beneficiary’s adjusted gross income for the entire year, which can trigger secondary effects that people rarely see coming.

More Social Security Benefits Become Taxable

If the beneficiary receives Social Security, the HSA distribution counts toward the combined-income formula that determines how much of those benefits are taxable. Someone who normally pays tax on 50% of their Social Security could find themselves taxed on 85% in the year they inherit the account. On a $50,000 balance, this alone can add several thousand dollars in tax.

Higher Medicare Premiums Two Years Later

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

No Step-Up in Basis

People familiar with inherited brokerage accounts or real estate expect a step-up in cost basis at death, wiping out unrealized gains. HSAs don’t work that way. The entire fair market value is taxed as ordinary income, not capital gains, regardless of how the money was invested inside the account. If the HSA held stocks or mutual funds that appreciated, the beneficiary gets no basis adjustment. The full balance is simply income.

State Income Tax

Most states follow the federal treatment of HSAs, but a couple that never conformed to the federal HSA provisions don’t recognize HSA tax advantages at all. In those states, even a surviving spouse’s inherited HSA can face different treatment at the state level. If the decedent or beneficiary lives in one of those states, get advice from someone who knows the local rules.

Claiming an Inherited HSA From the Custodian

The process starts with the bank, brokerage, or HSA administrator holding the account. Notify them of the death as soon as possible. Nothing moves until they have formal documentation.

Every custodian requires a certified copy of the death certificate and a completed beneficiary claim form. Beyond that, requirements vary:

A surviving spouse typically has the account transferred into their name, or the balance moved into their existing HSA. If they want the funds at a different institution, a transfer request form is needed.
A non-spouse individual receives cash. The custodian liquidates any investments and issues a Form 1099-SA reflecting the distribution and the date-of-death fair market value.
An estate needs proof of authority, typically letters testamentary from the probate court, along with the estate’s employer identification number. Some custodians accept a small-estate affidavit instead of full probate if the estate qualifies under state law.⁴

Processing usually takes several weeks to a few months. Cash-only accounts move faster than accounts holding investments. If the HSA is invested, the custodian sells the holdings before distributing the proceeds to a non-spouse. Market swings between the date of death and the date of liquidation change the actual cash received, but the taxable amount is locked in as of the date of death regardless of what happens afterward.

Keep the Beneficiary Form Current

The single most important thing you can do with your HSA from an estate planning perspective is name a beneficiary and keep that designation current. HSA beneficiary designations override your will. Even a carefully drafted estate plan won’t direct these funds where you want them if the beneficiary form says something different or is blank.

Most custodians let you name both primary and contingent beneficiaries and set percentages for each. A contingent beneficiary inherits only if all primary beneficiaries have predeceased you. Review the designations after any major life event: marriage, divorce, birth, or death in the family. An outdated form can produce results nobody intended.

If you have a spouse and want to preserve the tax advantages of the HSA, naming them primary beneficiary is almost always the right move. For a non-spouse, think about who would absorb the tax hit best: a beneficiary in a lower bracket keeps more of the money. If you’re charitably inclined, naming a 501(c)(3) as HSA beneficiary while directing other, more tax-friendly assets to family can lower the overall tax burden on your estate.

HSA balances have no required minimum distributions during your lifetime, so these accounts can grow for decades. The larger the balance, the more the beneficiary designation matters. A $100,000 HSA passing to a non-spouse in the 32% federal bracket produces $32,000 in federal tax alone, before state taxes and the downstream effects on Medicare premiums. A few minutes updating the beneficiary form can save your heirs thousands.

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