How to pay yourself back from your HSA later

The rule behind this is covered in the HSA shoebox rule, explained. In short: there is no federal deadline to reimburse yourself, as long as the expense is a qualified medical expense, it was incurred after your HSA was established, and you keep records that prove it.

1. Check that the expense qualifies

• It is medical care for you, your spouse, or a dependent. Publication 502 lists most of what counts. Nonprescription medicines and menstrual care products also count for an HSA. Most insurance premiums don’t.
• The date of service is after the date your HSA was established. Expenses from before that date never qualify, however long you wait.
• Insurance, an FSA, or another plan did not pay it, and you won’t take it as an itemized deduction.

2. Pay from your own account and save two things

Pay with a card or bank account that is not your HSA. Then save:

• The receipt or itemized bill. It should show the provider, the date of service, who the care was for, what it was, and the amount. If insurance was involved, keep the explanation of benefits (EOB) that shows what you owed. A card slip alone usually doesn’t show what was bought.
• Proof that you paid. A receipt marked paid, a card statement, or a bank statement line with the date and amount. This shows the money came from you and not from the HSA or another plan.

Save a digital copy right away. A photo or PDF in a folder you control is easier to keep for years than paper.

3. Log the expense

Keep one list of the expenses you plan to reimburse later. For each one, record:

• date of service and date paid
• provider and who the care was for
• amount you paid and how you paid it
• where the receipt and proof of payment are saved
• reimbursed: the date and amount, once you withdraw it

A spreadsheet works. The point is that years from now you can see what is still unreimbursed and find the file for each line.

4. Keep the HSA invested, if you choose to

Nothing requires you to invest. If you do, the money you didn’t withdraw can grow without federal tax while it stays in the HSA. Many custodians ask you to keep a minimum cash balance before you can invest the rest. Investments can lose value, so the balance may be lower when you want to withdraw.

5. Reimburse yourself when you decide to

1. Add up the logged expenses you want to reimburse. You can cover several old expenses with one withdrawal.
2. In your HSA custodian’s website or app, request a distribution to yourself. Custodians call this a withdrawal, a transfer to your bank, or a reimbursement. If it asks for a reason, choose the one for qualified medical expenses.
3. Withdraw no more than the total of those expenses. Anything above it is not a qualified distribution.
4. Mark each expense in your log as reimbursed, with the date and amount, so it is never claimed twice.

If you sell investments to fund the withdrawal, allow a few business days for the sale to settle before the cash is available.

6. Report it on your tax return

The withdrawal is reported for the year you take it, not the year of the medical expense.

• Form 1099-SA. Your HSA custodian sends you this form for each year with a distribution. Box 1 shows the total.
• Form 8889, Part II. Line 14a is your total distributions from Form 1099-SA. Line 15 is the part used for qualified medical expenses that were not reimbursed by insurance or other coverage and that you incurred after the HSA was established. Line 16 is what is left, which is taxable.
• Additional tax. Any amount on line 16 also owes an additional 20% tax (line 17b) unless the distribution was made after you turned 65, became disabled, or died.
• No double benefit. You can’t deduct on Schedule A any amount you include on line 15.

Illustrative example

This is an illustration. Assume an HSA established in 2025 and no other distributions in the year you withdraw. You pay a $400 dental bill in 2026 and $300 for prescription eyeglasses in 2027, both from your checking account, and log them. In 2040 you withdraw $700 to your bank account. Your Form 1099-SA for 2040 shows $700 in box 1. On Form 8889 for 2040, line 14a is $700, line 15 is $700, and line 16 is $0, so none of it is taxed.

7. Keep the records with that year’s tax files

Put copies of the receipts, proof of payment, and log entries for every expense you reimbursed with the tax files for the year of the withdrawal. That is the return that relies on them. Keep them for as long as the IRS can question that return.

Mistakes to avoid

• Reimbursing an expense from before the HSA was established.
• Reimbursing something insurance, an FSA, or an earlier HSA withdrawal already paid.
• Deducting the same expense on Schedule A.
• Withdrawing a round number that is more than your receipts add up to.
• Keeping only a card statement, which shows you paid but not what for.
• Forgetting state tax. Some states, including California and New Jersey, don’t follow the federal HSA tax treatment, so contributions or earnings can be taxed on the state return. Check your state’s rules.