Where to Report 1099-SA on 1040 Using Form 8889

To report a 1099-SA on your Form 1040, first complete Form 8889 (Health Savings Accounts) to figure out how much of the distribution is taxable. The taxable amount from Form 8889, Line 16, goes on Schedule 1, Line 8f, and any 20% additional tax from Line 17b goes on Schedule 2. Those schedules then feed your Form 1040. You file Form 8889 with your return even if you spent every dollar on qualified medical care and owe nothing.¹

Pull the Numbers Off Your 1099-SA First

Three boxes on Form 1099-SA drive everything that follows.

Box 1 shows the gross distribution: the total amount that came out of the account during the year, whether the custodian paid a provider directly or sent money to your bank. That figure is your starting point on Form 8889.²

Box 2 reports earnings on excess contributions you pulled out before your filing deadline. Those earnings are taxable regardless of what you did with the money, and the amount is already baked into Box 1.²

Box 3 carries a distribution code. Code 1 is a normal distribution, the code you’ll see on most 1099-SAs. Code 2 flags excess contributions withdrawn. Codes 4 and 6 involve death distributions. Code 5 signals a prohibited transaction. The code tells you which reporting path applies.³

Also check Box 5, which identifies the account type. If it says Archer MSA or Medicare Advantage MSA rather than HSA, you’ll use a different form (see below).

Fill Out Form 8889, Part II

Part II of Form 8889 is where the taxable amount gets calculated.

Line 14a: enter the gross distribution from Box 1.

Line 14b: enter any amount that was a rollover to another HSA (received by you and redeposited within 60 days), or excess contributions plus earnings you withdrew before the filing deadline. This line reduces Line 14a so those amounts aren’t treated as spendable distributions. Rollovers are limited to one per 12-month period.¹

Line 15: enter total qualified medical expenses you paid with HSA funds during the year. Qualified medical expenses follow Section 213: costs for diagnosis, treatment, or prevention of disease, and expenses affecting a structure or function of the body. The expense must have been incurred after the HSA was established and cannot have been reimbursed by insurance.¹

Line 16: subtract Line 15 from the adjusted distribution (Line 14a minus Line 14b). If qualified expenses equal or exceed the adjusted distribution, Line 16 is zero and nothing is taxable. Any positive number is ordinary income, taxed at your marginal rate.⁴

The 20% Additional Tax

If Line 16 shows a taxable amount, you generally owe an extra 20% on top of ordinary income tax. Lines 17a and 17b handle it: multiply the non-exempt portion of Line 16 by 0.20.⁵

Three exceptions eliminate the 20% surcharge (ordinary income tax on Line 16 still applies):

You were 65 or older when the distribution was made.
You were disabled as defined by the tax code.
The distribution was made after the account holder’s death.

If an exception applies, check the box on Line 17a and apply the 20% only to any portion of Line 16 that isn’t covered.¹

Where the Numbers Land on Your 1040

Once Form 8889 is done, two figures travel to two different schedules.

The taxable distribution on Line 16 goes to Schedule 1 (Additional Income and Adjustments to Income), Line 8f, which is designated for HSA income from Form 8889. That line actually captures both Line 16 and Line 20 of Form 8889 (Line 20 covers a separate situation involving failure to maintain high-deductible health plan coverage). The Schedule 1 total flows to your Form 1040.⁶

The 20% penalty on Line 17b goes to Schedule 2 (Additional Taxes). It’s a separate tax layered on top of your regular income tax, not something absorbed into your ordinary bracket calculation. Schedule 2’s total is added to your overall tax liability on the 1040.

If Line 16 is zero, nothing flows to either schedule. Form 8889 still gets attached.⁷

When the Whole Distribution Was for Medical Care

This is where people get tripped up. A tax-free distribution is still a reportable one. The IRS receives your 1099-SA from the custodian, and it expects a matching Form 8889 on your return showing that the money went to qualified medical expenses. Skip Form 8889 and you’re likely to get a notice, because the IRS sees a distribution with no explanation of where it went.²

The mechanics are the same as above: gross distribution on Line 14a, qualified expenses on Line 15, Line 16 comes out to zero, and no numbers move to Schedule 1 or Schedule 2. The form itself is the proof.

Keep documentation. The IRS doesn’t want your receipts attached to the return, but if the agency asks later, the burden of proof is on you. Hold onto itemized medical bills and pharmacy receipts for at least three years after filing, longer if the amounts are large.

If Your 1099-SA Is for an Archer MSA or Medicare Advantage MSA

Form 8889 is for HSAs only. If Box 5 of your 1099-SA identifies the account as an Archer MSA or a Medicare Advantage MSA, you use Form 8853 (Archer MSAs and Long-Term Care Insurance Contracts) instead. Archer MSA distributions go in Section A, Part II (Lines 6a through 9b); Medicare Advantage MSA distributions go in Section B (Lines 10 through 13b). The logic is similar (compare distributions to qualified expenses), but the form and some rules differ.⁸

Inherited HSA Distributions Work Differently

If the 1099-SA you’re holding relates to an inherited account, the reporting depends on who you are to the deceased.

A surviving spouse who is the designated beneficiary treats the HSA as their own. You file Form 8889 going forward exactly as the original account holder would have, and distributions follow standard HSA rules. The transfer itself isn’t taxable.¹

A non-spouse beneficiary sees a different outcome. The account stops being an HSA on the date of death, and the fair market value on that date is included in your gross income, reduced by qualified medical expenses the deceased incurred before death that you pay within one year. You still file Form 8889: write “Death of HSA account beneficiary” across the top, skip Part I, put the fair market value on Line 14a, list qualifying expenses on Line 15, and the remainder flows to Schedule 1. The 20% additional tax doesn’t apply, because the death exception covers this case.⁵

If the estate is the named beneficiary rather than an individual, the account’s value goes on the decedent’s final income tax return instead.

1
Internal Revenue Service. Instructions for Form 8889
2
Internal Revenue Service. Form 1099-SA – Distributions From an HSA, Archer MSA, or Medicare Advantage MSA
3
Internal Revenue Service. Instructions for Forms 1099-SA and 5498-SA
4
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
5
Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts
6
Internal Revenue Service. Instructions for Form 1040
7
Internal Revenue Service. Publication 969 – Health Savings Accounts and Other Tax-Favored Health Plans
8
Internal Revenue Service. Instructions for Form 8853