Distribution Code 1 on Form 1099-SA means “normal distribution.” It is the default label your HSA custodian puts in Box 3 whenever you take money out of a Health Savings Account, Archer MSA, or Medicare Advantage MSA under ordinary circumstances. The code does not decide whether you owe tax or a penalty. It only tells the IRS that a withdrawal happened and that none of the special situations (disability, death, excess contribution, prohibited transaction) applied. What you owe depends on how you spent the money, and you settle that on Form 8889 when you file.
What the Custodian Is Actually Reporting
Your bank or brokerage does not know what you bought with the money. They do not know your age. They do not know whether the withdrawal paid a hospital bill or a plumber. The IRS instructions to custodians say to use Code 1 “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 “if no other code applies” phrase is the important one. Code 1 is a catch-all. It is not a signal that the distribution is tax-free, and it is not a signal that the distribution is taxable. It is neutral. The tax character of the withdrawal gets established on your return, not on the 1099-SA.
So if you see Code 1 on your form, do not read anything into it beyond the fact that a withdrawal came out of the account during the year in the amount shown in Box 1.
Do You Owe Tax on a Code 1 Distribution?
Every HSA distribution faces two separate questions. Is any part of it included in your income? And if so, does an extra 20% tax apply on top of the regular income tax?
Question 1: Was the Money Spent on Qualified Medical Expenses?
If you used the distribution to pay qualified medical expenses that were not reimbursed by insurance and that you are not also deducting on Schedule A, the money is excluded from your gross income entirely. Tax-free. This is true no matter what age you are and no matter that the code says “normal distribution.”2Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans
Qualified medical expenses follow the definition of “medical care” under IRC Section 213(d) and cover amounts paid for yourself, your spouse, and your dependents. Doctor visits, prescriptions, dental work, vision care, mental health treatment, and menstrual care products all qualify.3Office of the Law Revision Counsel. 26 U.S. Code 223 – Health Savings Accounts
The main things that do not qualify are health insurance premiums (with four exceptions: COBRA, coverage while receiving unemployment compensation, long-term care insurance subject to age-based limits, and Medicare premiums if you are 65 or older, excluding Medigap), cosmetic procedures that do not treat a medical condition, and any expense you incurred before the HSA was opened.2Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans
Anything you spent on non-medical expenses gets added to your gross income and taxed at your ordinary rate. Which brings up the second question.
Question 2: Does the 20% Additional Tax Apply?
Under IRC Section 223(f)(4), any HSA distribution included in gross income is hit with an additional 20% tax on top of the regular income tax, unless one of three exceptions 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 the extra 20% goes away. The HSA effectively works like a traditional retirement account past that point.
- You are disabled, meaning you cannot engage in any substantial gainful activity because of a condition expected to result in death or last indefinitely.
- The distribution was made after the account holder died.
None of these show up in Code 1 by themselves. If your custodian knew about the disability or the death at the time they issued the form, they would have used Code 3, 4, or 6 instead. When Code 1 sits on a form for a distribution that actually qualified for an exception, you still claim the exception on your return; you just need to fix the code or explain the mismatch (more on that below).
The math on a non-exempt, non-medical withdrawal adds up quickly. On a $5,000 withdrawal in the 22% bracket, you owe $1,100 in income tax plus another $1,000 penalty, for $2,100 total on money that was supposed to be yours.
Reporting Your Code 1 Distribution on Form 8889
Every 1099-SA distribution has to be reconciled on Form 8889, which attaches to your Form 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 spent on qualified medical expenses. The difference goes on Line 16, and that is your taxable amount.5Internal Revenue Service. 2025 Instructions for Form 8889
If Line 16 is zero because you spent every dollar on qualified medical care, you are finished. No tax, no penalty, and Code 1 costs you nothing.
If Line 16 shows a taxable amount, go to Lines 17a and 17b. Check the box on Line 17a if a penalty exception applies (age 65 or older, disability, or a distribution after death). On Line 17b, enter 20% of any taxable amount that does not 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) From there it becomes part of your total income on the 1040.
When Code 1 Is the Wrong Code
Custodians sometimes assign Code 1 when a special code should have applied. The most common mix-up is a disability distribution that should have carried Code 3, or a beneficiary payment that should have been Code 4 or 6. Because the IRS gets its own copy of the 1099-SA, a code that does not match what you report on Form 8889 can prompt questions.
Contact your custodian as soon as you spot the issue. Custodians are required to correct any filed Form 1099-SA once they know it is wrong.8IRS. Instructions for Forms 1099-SA and 5498-SA (Rev. December 2026) Put the request in writing, say which code should have been used, and include documentation, such as a physician’s letter for disability or a death certificate for an inherited account. A corrected form usually arrives within a few weeks.
If the filing deadline is closer than the correction, complete Form 8889 based on the actual facts. The Line 17a exception box lets you report the correct tax treatment even when the 1099-SA still shows Code 1. Attaching a short explanation to the return can head off the notice.
Records You Need to Keep
The IRS does not want your receipts with the return. It wants them if it audits you. To defend a Code 1 distribution as tax-free, you need proof the money went to qualified medical expenses, that insurance did not reimburse them, and that you did not also claim them as itemized deductions on Schedule A.2Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans
Keep receipts, explanation-of-benefits statements, and a record tying each withdrawal to a specific expense. The standard IRS retention window is three years from the date you file, extending to six years if you underreported income by more than 25%.9Internal Revenue Service. How Long Should I Keep Records
One HSA-specific quirk is worth flagging. There is no deadline for reimbursing yourself for a past medical expense, so some account holders save old receipts and take tax-free distributions years later against those expenses. If you use that strategy, keep the receipts as long as you hold the HSA, plus three years after you file the return that reports the reimbursing distribution.