On Form 1099-SA, distribution Code 1 means “normal distribution.” It’s the default code your HSA custodian stamps on any ordinary withdrawal from a Health Savings Account, Archer MSA, or Medicare Advantage MSA, and it applies whether you spent the money on a doctor visit or on something that has nothing to do with medical care. The code itself does not decide whether you owe tax or a penalty. You do that on your return.
What Code 1 Actually Tells the IRS
Code 1 is a catch-all. The IRS instructions tell custodians to use it “for normal distributions to the account holder and any direct payments to a medical service provider” and to “use this code if no other code applies.”1IRS. Instructions for Forms 1099-SA and 5498-SA (12/2026) That last clause is the key. Your custodian has no idea whether the withdrawal paid for a knee replacement or a weekend trip. They don’t know your age. They see a withdrawal, and unless one of the special situations applies — disability, death, an excess-contribution correction, a prohibited transaction — they mark it Code 1.
So Code 1 is neutral. A widespread misconception is that Code 1 signals a tax-free distribution. It does not. The custodian is reporting that money left the account. What happens on your tax return is a separate question, and the answer turns on how you spent the money and on your personal circumstances that year.
The form itself is straightforward. Box 1 shows the total you withdrew. Box 2 shows earnings on any excess contributions you pulled back. Box 3 holds the distribution code. For most account holders in most years, Box 3 is 1.
Do You Owe Tax on a Code 1 Distribution?
Every HSA distribution runs through two separate questions. Is any of it taxable income? And if it is, does the extra 20% tax stack on top?
Did You Spend It on Qualified Medical Expenses?
If you used the withdrawal to pay qualified medical expenses that weren’t reimbursed by insurance, the money is excluded from your gross income. Fully tax-free. Your age doesn’t matter, and the fact that the form shows Code 1 doesn’t matter.2Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans
If you spent it on anything else, the distribution goes into your gross income and is taxed at your ordinary rate. That’s when the second question comes in.
Does the 20% Additional Tax Apply?
Under IRC Section 223(f)(4), any HSA distribution included in gross income carries a 20% additional tax unless an exception applies.3Office of the Law Revision Counsel. 26 U.S. Code 223 – Health Savings Accounts The exceptions:
- You are 65 or older. Non-medical withdrawals are still taxed as ordinary income, but no penalty attaches. The HSA behaves like a traditional retirement account from that point on.
- You are disabled, meaning unable to engage in any substantial gainful activity due to a condition expected to result in death or last indefinitely.
- The distribution was made after the account holder’s death, regardless of who receives the money.
The math is unforgiving when none of those apply. On a $5,000 non-medical withdrawal in the 22% bracket, you’d owe $1,100 in income tax plus another $1,000 in penalty. That’s $2,100 out of $5,000, which is why most account holders under 65 treat their HSA strictly as a medical-expense fund.
One point worth flagging: if your withdrawal actually qualified for the disability exception or was a death distribution, your custodian should have used Code 3, 4, or 6, not Code 1. If you see Code 1 on a distribution you believe fits one of those categories, see the correction steps below.
Reporting a Code 1 Distribution on Form 8889
Every 1099-SA distribution has to be reconciled on Form 8889, attached to your 1040. Part II handles the calculation.4Internal Revenue Service. About Form 8889, Health Savings Accounts (HSAs)
Enter the gross distribution from Box 1 of your 1099-SA on Line 14a. On Line 15, enter what you actually spent on qualified medical expenses during the year. The difference lands on Line 16 as the potentially taxable amount.5Internal Revenue Service. 2025 Instructions for Form 8889
If Line 16 is zero, you’re finished. No tax, no penalty, and Code 1 has done nothing to hurt you. If Line 16 shows a taxable amount, move to Lines 17a and 17b. Check the box on Line 17a if a penalty exception applies (age 65 or older, disabled, or a distribution after death). On Line 17b, enter 20% of any taxable amount that doesn’t qualify for an exception.6Internal Revenue Service. Instructions for Form 8889 (2025)
The taxable amount from Form 8889 flows to Schedule 1 (Form 1040), Line 8f, labeled “Income from Form 8889,”7Internal Revenue Service. 2025 Schedule 1 (Form 1040) and from there into your total income on the 1040.
Notice what the form lets you do. Even though Code 1 is neutral, Line 17a is where you claim a penalty exception on your own authority. You don’t need the custodian to have used Code 3 for you to escape the 20% tax if you meet the disability definition. The paperwork just has to hold up if the IRS asks.
Records You Need to Keep
The IRS doesn’t want your receipts with the return, but it wants you to have them. To back up any distribution you treated as tax-free, you need to show that the money paid qualified medical expenses, that insurance didn’t reimburse those expenses, and that you didn’t also claim them as itemized medical deductions on Schedule A.2Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans
Hold on to receipts, explanation-of-benefits statements, and anything that connects a specific distribution to a specific expense. The general IRS retention guideline is three years from the date you filed, stretching to six years if you underreported income by more than 25%.8Internal Revenue Service. How Long Should I Keep Records
One quirk unique to HSAs: there is no deadline for reimbursing yourself for a past medical expense. Some people save receipts for years and then take a tax-free distribution later. If that’s your plan, keep the receipts for as long as you hold the HSA and for three years after you file the return that reports the reimbursement.
What to Do If Code 1 Is Wrong
Custodians make mistakes. Sometimes they use Code 1 when Code 3 (disability) was correct, or apply Code 4 to a payment that should have carried Code 6. Because the IRS gets its own copy of the 1099-SA, a code that clashes with your Form 8889 can prompt questions.
Contact your custodian as soon as you spot the error. IRS instructions require them to correct a filed Form 1099-SA once they know it’s wrong.9IRS. Instructions for Forms 1099-SA and 5498-SA (Rev. December 2026) Put the request in writing, name the code that should have been used, and include supporting documentation, such as a physician’s letter for disability or a death certificate for an inherited account. Corrected forms usually arrive within a few weeks.
If you have to file before the corrected form shows up, complete Form 8889 based on what actually happened. The Line 17a exception checkbox lets you report the correct tax treatment even when Box 3 on your 1099-SA doesn’t match. Attach a short explanation if you think the discrepancy will draw attention.