1099-SA: Distributions From an HSA, Archer MSA, or Medicare Advantage MSA
Reports distributions from health savings accounts and medical savings accounts.
Overview
IRS Form 1099-SA, "Distributions From an HSA, Archer MSA, or Medicare Advantage MSA," is an informational return filed by the trustee or custodian of a health savings account (HSA), Archer medical savings account (MSA), or Medicare Advantage MSA whenever a distribution is made from the account during the tax year. The form reports the gross amount distributed, the nature of the distribution, and any earnings on excess contributions returned to the account holder. Trustees must furnish a copy to the account beneficiary and file with the IRS no later than January 31 of the year following distribution.
The form exists because distributions from HSAs and MSAs receive favorable tax treatment only when used for qualified medical expenses as defined under IRC §§ 223 and 220. Distributions used for non-qualified purposes are includible in the account holder's gross income and subject to an additional tax — generally 20% for HSAs — unless an exception applies (death, disability, or reaching age 65 for HSAs). The IRS uses Form 1099-SA in tandem with the account holder's Form 8889 (for HSAs) or Form 8853 (for Archer and Medicare Advantage MSAs) to verify that reported distributions were either qualified or properly accounted for.
From the account holder's perspective, receiving a 1099-SA does not automatically mean tax is owed. The recipient reports distributions on their individual return and must substantiate qualified medical expense usage. In practice, many taxpayers and even some preparers overlook this reconciliation step, leading to unnecessary tax and penalty assessments. Understanding what each box on Form 1099-SA means — and how it flows to the correct downstream form — is essential for accurate individual return preparation.
Who Files This Form?
Any bank, insurance company, or other entity that serves as trustee or custodian of an HSA, Archer MSA, or Medicare Advantage MSA must file Form 1099-SA for each account from which a distribution was made during the calendar year. This obligation applies regardless of the dollar amount of the distribution — there is no de minimis threshold. If even a single dollar was distributed, a 1099-SA is required.
Distributions that trigger reporting include: (1) cash withdrawals or payments made directly to medical providers; (2) distributions made after the death of the account holder, with the estate or beneficiary as recipient; (3) excess contribution withdrawals (including the earnings on those excess amounts); (4) distributions due to account holder disability; and (5) rollovers, though rollovers between accounts of the same type are reported but coded separately so the recipient can exclude them from income.
Trustees must issue separate Forms 1099-SA for each distribution type when a single account has both a regular distribution and, for example, a death distribution in the same year, because different distribution codes apply.
Edge cases to watch: If an HSA account holder dies and the surviving spouse is the named beneficiary, the spouse assumes the HSA as their own, and any distributions to that spouse in the year of death are still reportable on Form 1099-SA with distribution code 4 (death). A non-spouse beneficiary who inherits an HSA must include the full fair market value in income in the year of death; the FMV on date of death is reported in Box 4. Archer MSA and Medicare Advantage MSA reporting follows the same structural rules but flows to Form 8853 rather than Form 8889 on the recipient's return.
Key Fields
Box 1: Gross Distribution
Reports the total dollar amount distributed from the account during the year, before any reduction for qualified medical expenses. This is the figure that flows to Form 8889 (Line 14a for HSAs) or Form 8853 for MSAs. A common mistake is assuming this amount is automatically taxable — it is not; the taxable portion is determined on the downstream form after qualified expense substantiation.
Box 2: Earnings on Excess Contributions
Shows the earnings portion of any excess contribution that was withdrawn from the account. This amount is always includible in gross income regardless of how it is used, and it may also be subject to an additional 10% tax. It is reported separately from the gross distribution because its tax treatment differs from a standard distribution.
Box 3: Distribution Code
A single-digit code identifying the nature of the distribution: 1 = normal distribution; 2 = excess contributions (and earnings) returned before the tax filing deadline; 3 = disability; 4 = death distribution (to estate or beneficiary); 5 = prohibited transaction; 6 = Medicare Advantage MSA distribution. The code drives the tax treatment on the recipient's return and dictates whether the additional 20% (HSA) or 15% (Archer MSA) penalty applies.
Box 4: FMV on Date of Death
Populated only when distribution code 4 is used. Reports the fair market value of the account on the date of the account holder's death. A non-spouse beneficiary uses this value to determine the amount includible in gross income for the year of death. If the surviving spouse is the beneficiary, this box is typically left blank or zeroed, because the spouse rolls the account into their own HSA.
Box 5: HSA, Archer MSA, or Medicare Advantage MSA Checkbox
A set of checkboxes identifying which type of account generated the distribution. This matters because HSA distributions reconcile on Form 8889, while Archer MSA and Medicare Advantage MSA distributions reconcile on Form 8853. Checking the wrong box — or leaving it blank — can cause downstream form mismatches that trigger IRS notices.
Recipient TIN and Account Number
The account holder's taxpayer identification number (SSN in virtually all cases) and the trustee's account identifier. TIN mismatches between the 1099-SA and the IRS's records are one of the most common triggers for B-notices. Trustees should use IRS TIN matching before filing, and account holders should ensure the trustee has their correct, current SSN on file.
Trustee/Payer Information
The trustee's or custodian's name, address, and EIN appear in the payer block. If an HSA custodian changes hands mid-year (common after corporate banking acquisitions), each custodian files a separate 1099-SA covering only the period they held the account. Recipients may receive two or more 1099-SAs for the same HSA in a single year.
Filing Deadlines
January 31
Penalties range from $60 to $310 per form for late filing.
Step-by-Step Instructions
- 1
Identify all HSA, Archer MSA, and Medicare Advantage MSA accounts in your system that had one or more distributions during the calendar year, pulling a complete distribution register from your trustee platform or trust accounting system.
- 2
For each account, classify each distribution by its appropriate distribution code (1 through 6). Segregate any distributions involving excess contribution returns and calculate the allocable earnings on those excess amounts using the IRS-prescribed method, which accounts for the account's investment performance during the period the excess was held.
- 3
Determine the gross distribution amount for Box 1. Note that if multiple distributions occurred in the year and they share the same distribution code, they may be aggregated onto a single Form 1099-SA; distributions with different codes require separate forms.
- 4
Populate Box 4 (FMV on date of death) for any account where the distribution code is 4. Obtain the certified account value as of the date of the account holder's death from the custodial records. Confirm whether the beneficiary is a spouse (who may treat it as their own HSA) or a non-spouse, because this affects income inclusion reporting for the recipient.
- 5
Check the correct account-type checkbox in Box 5 for every form. Cross-reference the account enrollment documentation if there is any ambiguity between Archer MSA and HSA account types — these are distinct products with different eligibility rules.
- 6
Validate recipient TINs using the IRS TIN Matching Program before submitting. Correct any mismatches with the account holder before the January 31 deadline to avoid B-notices and potential backup withholding obligations.
- 7
File Copy A with the IRS (electronically via the FIRE system if filing 10 or more information returns, as required under current IRS e-filing thresholds) and furnish Copy B to the account holder no later than January 31. Retain Copy C in your trustee records for at least four years.
- 8
After January 31, reconcile your 1099-SA filings against Form 5498-SA data for the same accounts. The 5498-SA (due by May 31) reports contributions and the year-end FMV; significant discrepancies between distributions reported on 1099-SA and account-level data may indicate unreported transactions.
Common Mistakes to Avoid
Filing a single Form 1099-SA when an account had distributions with multiple distribution codes in the same year.
Issue a separate Form 1099-SA for each distribution code. For example, if an account holder received a normal distribution (code 1) and also withdrew an excess contribution (code 2) in the same year, two forms are required.
Omitting earnings on excess contributions from Box 2, or including those earnings in the Box 1 gross distribution total instead of reporting them separately.
Box 2 must be populated independently with the net income attributable to the excess contribution. Box 1 should reflect the total gross distribution including the earnings amount, but Box 2 separately calls out the earnings component so the recipient and the IRS can properly apply the additional tax.
Checking the wrong account-type box in Box 5, most commonly labeling an HSA as an Archer MSA.
Verify the account type against enrollment documentation before filing. This matters because the downstream recipient form (8889 vs. 8853) differs by account type, and a mismatch can cause automated underreporter issues.
Failing to file a 1099-SA for small or single distributions because no minimum threshold is assumed to exist.
There is no de minimis exception for Form 1099-SA. Any distribution, regardless of amount, requires reporting. Build your distribution extract logic to capture all non-zero transactions.
Neglecting to issue a corrected Form 1099-SA when an account holder returns a mistaken distribution after year-end.
If an HSA distribution was returned to the account as a mistaken distribution and the trustee accepts it, the original 1099-SA should be corrected to remove that distribution amount. Coordinate the correction with the timing rules for mistaken distributions under IRS guidance.
Late or missing distribution code 4 filings when an account holder dies late in the calendar year.
Establish an internal workflow that flags account holder death notifications received in Q4. The year-of-death distribution still requires a timely 1099-SA, and missing it creates both penalty exposure and downstream problems for the estate's or beneficiary's return.
Frequently Asked Questions
Not necessarily. Distributions used to pay qualified medical expenses as defined under the tax code are excluded from gross income, even though the full gross amount is reported in Box 1. You reconcile the taxable portion on Form 8889 (for HSAs) or Form 8853 (for MSAs) by subtracting your qualified medical expenses from the gross distribution. Only the remainder — if any — is includible in income and potentially subject to the additional penalty tax.
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