Introduction
Form 1099-SA doesn't go on Form 1040 as its own income line. For an HSA, you carry the distribution details to Form 8889, and only the taxable portion flows through to your income.
The right treatment depends on the account type, the amount distributed, how you spent the money, and the code in Box 3. This guide walks through the reporting step by step. Line numbers below follow the finalised 2025 IRS forms. Always check the instructions for the year you're filing, because the 2026 drafts already differ in places.
Key Takeaways
- HSA distributions go on Form 8889, filed with Form 1040 or 1040-SR.
- Qualified medical use is generally tax-free; nonqualified amounts are income and may carry extra tax.
- Box 1 shows the total withdrawn, not how much was qualified.
- Contributions and distributions are reported separately.
What Is Form 1099-SA and What Does It Show?
Form 1099-SA reports distributions from an HSA, Archer MSA, or Medicare Advantage MSA. The account trustee files it with the IRS and sends you a copy. Direct payments to medical providers count as distributions too.
| Box | What it shows |
|---|---|
| 1 | Gross distribution, including any earnings shown in Box 2 |
| 2 | Earnings on excess contributions returned by the due date |
| 3 | Distribution code |
| 4 | Fair market value on date of death |
| 5 | Account type: HSA, Archer MSA, or Medicare Advantage MSA |
The form tells the IRS how much money left the account. It doesn't tell anyone whether every dollar was paid for a qualified expense.
That's your job to establish, so keep receipts, account statements, and records showing no other source reimbursed the expense. Per Publication 969, keep these with your tax records rather than sending them in.
Where to Report a 1099-SA on Form 1040
For an HSA, the answer is Part II of Form 8889. You never enter the full Box 1 figure straight onto Form 1040.
Completing Form 8889, Part II
Using the finalised 2025 form:
- Line 14a: Enter total distributions from Box 1. Add them up if you have several forms.
- Line 14b: Enter rollovers and timely withdrawn excess contributions with earnings.
- Line 14c: Subtract 14b from 14a.
- Line 15: Enter qualified medical expenses paid with the distributions.
- Line 16: Subtract line 15 from 14c (never below zero). This is your taxable distribution.
- Lines 17a and 17b: Note any exception and compute the additional 20% tax.
Married couples filing jointly where both have HSAs complete separate Forms 8889. A beneficiary with two or more HSAs follows the instructions for a statement form plus a controlling Form 8889.
How the Taxable Amount Reaches Form 1040
On the 2025 forms, line 16 goes to Schedule 1, Part I, line 8f, and Schedule 1 line 10 carries to Form 1040 line 8. The additional tax from line 17b goes to Schedule 2. That destination line changes in the 2026 draft (17c in 2025, 13c in the draft), so verify before filing.
MSA Distributions
Archer MSA and Medicare Advantage MSA distributions use Form 8853, not Form 8889. Archer MSAs go in Section A, Part II; Medicare Advantage MSAs go in Section B. The taxable amount can still end up on Form 1040.
Filing Checklist
- Gather every Form 1099-SA.
- Confirm the account type in Box 5.
- Enter the figures on Form 8889 or Form 8853.
- Match withdrawals against receipts.
- Review Schedule 1 and Form 1040 for the taxable amount.
Are 1099-SA Distributions Taxable?
Qualified Distributions
Money spent on qualified medical expenses for you, your spouse, or your dependents isn't taxable. Expenses incurred before the HSA was established don't qualify. And you can't deduct the same expense as an itemized medical deduction.
When a Distribution Becomes Taxable
- Nonqualified spending: Included in income, plus generally a 20% additional tax.
- Excess contributions: Withdrawals by the return due date (including extensions) are allowed; earnings are taxable as "Other income." After that date, withdrawals are taxable even if spent on medical care.
- Inherited HSA (spouse): Treats the account as their own.
- Inherited HSA (nonspouse): Date-of-death value is taxable in the year of death, reduced by the decedent's medical expenses paid within one year.
- Inherited HSA (estate): Reports the value on the decedent's final return.
The 20% tax doesn't apply to distributions made after death, disability, or age 65. Those are exceptions to the additional tax only. The income is still taxable if the money wasn't used for qualified expenses.
Don't Read Box 3 as a Verdict
Box 3 codes describe the distribution type. They do not prove whether spending was qualified.
- Code 1: Normal distribution; does not prove qualified use
- Code 5: Prohibited transaction under section 4975 (such as a loan between you and the HSA). The account stops being an HSA, and fair market value is reported on Form 8889
- Code 6: Later distributions to a nonspouse beneficiary other than an estate; does not replace the year-of-death inclusion rule
What Other HSA Forms and Records Do You Need?
| Document | Role |
|---|---|
| Form 8889 | Contributions, deduction, distributions, taxable amount, additional tax |
| Form W-2, Box 12 code W | Employer and payroll HSA contributions |
| Form 5498-SA | Contribution and rollover information; keep it, don't attach it |
Contributions and distributions are separate issues on Form 8889:
- Part I, line 2 covers your personal contributions
- Line 9 is for employer and cafeteria-plan contributions, so they aren't deducted twice
- The line 13 deduction flows to Schedule 1, Part II, line 13, then to Form 1040 line 10
For reference, the 2026 base contribution limits are $4,400 for self-only and $8,750 for family coverage, per Rev. Proc. 2025-19. These limit contributions, not tax-free withdrawals.
Missing or Wrong Forms
- Contact the trustee named on the form, as the IRS guidance advises.
- Keep receipts and statements.
- If you've already filed, use Form 1040-X with the corrected forms attached.
VJM Global's U.S.-compliant tax professionals can review reporting for complex situations, such as inherited accounts, business-owner circumstances, or cross-border issues. This article is general information and doesn't replace advice on your own tax situation.
Frequently Asked Questions
Do I have to report a 1099-SA on my tax return?
Yes. HSA distributions must be reported on Form 8889 filed with Form 1040, even when tax-free. MSA distributions generally use Form 8853.
Where do I report 1099-SA (HSA distributions) on Form 1040?
Report them first on Form 8889. Any taxable amount flows through Schedule 1 to Form 1040, not the full Box 1 amount.
What tax form do I use to report HSA distributions?
Use Form 8889 for HSA distributions. Archer MSA and Medicare Advantage MSA distributions go on Form 8853.
Are distributions reported on Form 1099-SA taxable?
Qualified medical distributions are generally tax-free. Nonqualified ones are taxable and usually face an additional 20% tax unless an exception applies.
Where do HSA contributions go on a tax return?
Personal contributions go in Part I of Form 8889. Employer contributions from Form W-2 are reconciled on line 9 to avoid a double deduction.
What information is included on Form 1099-SA?
Box 1 shows gross distributions, Box 2 earnings on excess contributions, and Box 3 the distribution code. Box 4 gives date-of-death value, and Box 5 the account type.
