Lands on Form 8889 — where the gross distribution is split into tax-free and taxable

If you have never had a health savings account, an Archer MSA or a Medicare Advantage MSA, this article is not for you — no 1099-SA will come. And it is only about money that came out of the account, which is all this form reports. What went in is reported on a different form, the 5498-SA, and is a separate question.

A 1099-SA arrives with one large number on it, and it looks like income. For most people, most or all of it is not.

The form cannot tell you which part is which. It was never meant to.

The short answer
What the form reports Every withdrawal from the account during the year
What box 1 includes Debit-card payments and payments straight to a provider
Did the trustee decide what is taxable? No — it is told not to
Where it is decided Form 8889
Withdrawals for qualified medical expenses Tax-free — but still reported
Withdrawals for anything else Income, and possibly 20% additional tax
No additional tax after Death, disability, or age 65
Direct transfer to a new provider Not reported

What box 1 counts

The instructions describe the form's job in one sentence: it reports "distributions made from a health savings account (HSA), Archer medical savings account (Archer MSA), or Medicare Advantage MSA (MA MSA)." And they add:

"The distribution may have been paid directly to a medical service provider or to the account holder."

Publication 969 says the same about the debit card: your total distributions "include amounts paid with a debit card." So box 1 is the sum of every swipe at the pharmacy, every bill paid from the account, and every transfer to your bank. It is a record of money leaving, not a measure of income.

The trustee does not decide what is taxable

This is the line that explains the form. In the instructions for box 1, addressed to the institution filing it:

"You are not required to determine the taxable amount of a distribution."

The trustee sees money leave. It does not see the receipts, and it does not know whether a payment was for a prescription or for something else. That judgement is yours, and the form is the prompt to make it.

Where it is decided: Form 8889

"If you use a distribution from your HSA for qualified medical expenses, you don't pay tax on the distribution but you have to report the distribution on Form 8889."

Tax-free is not the same as unreported. The Form 8889 instructions carry the number across directly — line 14a is "the total distributions your HSAs made", and "These amounts should be shown on Form 1099-SA, box 1." Line 15 then takes out the withdrawals used for qualified medical expenses, incurred after the account was established. What is left is income.

And on anything that is income, Publication 969 adds that it "may be subject to an additional 20% tax." The Form 8889 instructions give the exceptions: the additional tax does not apply to distributions made after the account holder "Dies, Becomes disabled or Turns age 65."

A year's box 1 Amount
Pharmacy and doctor, with receipts $2,100
Something that was not a medical expense $300
Box 1, gross distribution $2,400
Tax-free on Form 8889 $2,100
Included in income $300
Additional 20% tax, if under 65 and none of the exceptions applies $60
The mistake in both directionsReporting the whole of box 1 as income pays tax on money that was never taxable. Ignoring the form because "it was all medical" skips the Form 8889 that makes it tax-free. Both start from treating box 1 as the answer rather than the question.

The code in box 3

The instructions list what each code means. The ones most people meet:

Code Meaning
1 Normal distribution — including direct payments to a provider
2 Excess contributions returned to you
3 Distribution after the account holder became disabled
4 Distribution because of death

Code 1 is the usual one, and it says nothing about whether a withdrawal was medical. It only says the withdrawal was ordinary.

Two rules that catch people

Expenses from before the account existed do not count. Publication 969: "For HSA purposes, expenses incurred before you establish your HSA aren't qualified medical expenses." The date the account was opened matters as much as the receipt.

Moving the account is not a withdrawal. A direct transfer from one provider to another is not reported on the form — the instructions say not to report "a trustee-to-trustee transfer" between HSAs. If your new provider shows a balance and no 1099-SA came from the old one, that is why.

What to keep

Publication 969 sets out what the records have to show:

  1. That each withdrawal paid for a qualified medical expense.
  2. That the expense was not paid or reimbursed from another source.
  3. That you did not also take it as an itemized deduction.

And: "Don't send these records with your tax return. Keep them with your tax records."

A receipt for every withdrawal, kept with the year's return, turns box 1 from a number that looks like income into the tax-free distribution it usually is. Income with no paperwork behind it is one kind of problem. A form with the right number and no receipts behind it is the other.

Common questions

What is Form 1099-SA used for?
To report money taken out of a health savings account, an Archer MSA or a Medicare Advantage MSA. The instructions: it is filed "to report distributions made from a health savings account (HSA), Archer medical savings account (Archer MSA), or Medicare Advantage MSA (MA MSA)."
What does gross distribution in box 1 mean?
The total that left the account during the year. It includes payments made with the account's debit card and payments sent directly to a provider: "The distribution may have been paid directly to a medical service provider or to the account holder."
Is box 1 taxable income?
Not by itself. The trustee who files the form is told: "You are not required to determine the taxable amount of a distribution." Withdrawals used for qualified medical expenses are tax-free; only the rest is income.
Do I still have to report it if it was all for medical expenses?
Yes. Publication 969: "If you use a distribution from your HSA for qualified medical expenses, you don't pay tax on the distribution but you have to report the distribution on Form 8889."
What happens to a withdrawal that was not for a medical expense?
It is included in income, and it "may be subject to an additional 20% tax." The Form 8889 instructions list the exceptions: the additional tax does not apply to distributions made after the account holder dies, becomes disabled or turns age 65.
What does the code in box 3 mean?
The type of withdrawal. Code 1 is a normal distribution, including direct payments to a provider; code 2 is excess contributions returned; code 3 is a distribution after the holder became disabled; code 4 is a death distribution. Most people see code 1.
Can I use it for expenses from before I opened the account?
No. Publication 969: "For HSA purposes, expenses incurred before you establish your HSA aren't qualified medical expenses."
I moved my account to a new provider. Why is there no 1099-SA for it?
Because a direct transfer between accounts is not reported: the instructions say not to report "a trustee-to-trustee transfer" from one HSA to another.
What records do I need?
Enough to show that each withdrawal paid for a qualified medical expense, that the expense was not paid or reimbursed from another source, and that you did not also take it as an itemized deduction. Publication 969: "Don't send these records with your tax return. Keep them with your tax records."

This article is for educational purposes only and does not constitute tax, legal, or financial advice. Consult a qualified tax professional about your situation.

Official sources