Health savings account

A health savings account (HSA) is an individually owned, tax-advantaged US account for saving and paying qualified medical expenses.

Also called: HSA

by Lee Schmidt

Published November 2, 2026

An HSA is not health insurance and does not replace a health plan. You own the account, and unused money carries forward from year to year rather than expiring at year-end. Depending on the provider, you can hold cash, invest part of the balance, or use both, so the account's tax advantages do not make every holding equally stable or accessible.

In a sentence

  • "My health savings account starts with $3,000, and a $1,000 medical withdrawal leaves $2,000 before any other changes."
  • "My health savings account holds money for care; my insurance determines what the plan covers."
  • "I keep my health savings account when I change jobs, even if I cannot contribute under my new coverage."

How it works

  1. Check eligibility for the period you are funding. Contribution eligibility generally requires an HSA-eligible high-deductible health plan, no disqualifying additional coverage, no Medicare enrollment, and that you cannot be claimed as another person's tax dependent. A high deductible alone does not establish eligibility.
  2. Fund the account. You or your employer can contribute, and your own contributions may come through a payroll deduction. Contributions from both sources count toward the applicable annual limit.
  3. Choose cash or investments. Cash avoids investment-price swings; investments can lose value and may need to be sold before you pay a bill. Investment options and any required cash minimum depend on the provider.
  4. Keep expense records. Tax-free treatment depends on the expense and reimbursement rules, not just whether you use an HSA debit card.

Eligible contributions are generally deductible or excluded from federal taxable income, account earnings are not currently taxed federally, and qualified medical withdrawals are federally tax-free. State tax treatment can differ.

An example

You hold $3,000 in an HSA, split equally between cash and investments. Assume a $1,000 medical bill qualifies for a tax-free withdrawal, with no contributions, interest, investment changes, or fees during the example.

HSA holdingsBefore paymentAfter payment
Cash$1,500$500
Investments$1,500$1,500
Total balance$3,000$2,000

You pay the bill from cash, so no investment sale is needed. The remaining $2,000 carries into the next year if nothing else changes; year-end does not force you to spend it.

Why it matters

An HSA can help cover your insurance deductible and other qualified costs, but its balance is neither the deductible nor your out-of-pocket maximum. Those are insurance-plan terms; the HSA is money you own. Compare upcoming medical bills with usable cash rather than assuming an invested balance can cover every payment immediately without a sale or possible loss.

Employer HSA contributions also matter when you compare job offers. They can help fund medical costs, but they are not the same as unrestricted take-home pay or a promise that insurance covers every expense.

Health savings account versus flexible spending account

An HSA is an account you own, while a health flexible spending account (FSA) is an employer-sponsored spending arrangement rather than a portable account you own. You keep your HSA when you change jobs; access to an FSA follows the employer plan's terms.

HSA balances carry forward without an annual use-it-or-lose-it rule. FSA funds generally must be used within the plan's deadline, although a plan may offer a limited carryover or a grace period. Check the actual FSA terms rather than assuming unused money survives year-end.

Common questions

Can I use an HSA after I stop being eligible to contribute? Yes. Losing contribution eligibility does not erase an existing HSA balance or prevent qualified medical withdrawals. Keep the rules for adding new money separate from the rules for spending money already in the account.

What makes a medical expense eligible for a tax-free withdrawal? The expense must meet federal qualified-medical-expense rules and generally must be incurred after the HSA is established. You cannot also have the same expense reimbursed elsewhere or claim it as an itemized medical deduction, so retain records supporting the withdrawal.

Do I have to invest my HSA? No. An HSA can hold cash, and investment choices depend on the provider. Keeping money for near-term bills in cash avoids having to sell an investment after its value falls; investing introduces market risk even inside a tax-advantaged account.

What happens if I withdraw money for something else? A nonqualified withdrawal is generally subject to federal income tax and may also incur an additional tax unless an exception applies. An HSA is not an unrestricted tax-free spending account.

Go deeper

Where it shows up in Zypper

Zypper supports HSAs among its investment and brokerage account types, whose balances contribute to net worth. Every account you add counts toward net worth, which Zypper charts over time. See Supported account types and Net worth tracking, or get started with Zypper to bring your account balances together.