5498-SA Contribution Ledger Reconciliation for Trustees

Before querying transaction databases, reporting teams must confirm they are programming against the correct form revision. The IRS Instructions for Forms 1099-SA and 5498-SA specify using the December 2026 revision for reporting 2026 information in early 2027. Do not use this revision for prior-year corrections.

Form 5498-SA requires filing by May 31 of the year following the reporting calendar year. If a filing or furnishing date falls on a Saturday, Sunday or applicable legal holiday, use the next business day. For 2026 reporting, the January 31 date moves to Monday, February 1, 2027, and the May 31 date moves to Tuesday, June 1, 2027 because May 31 is Memorial Day. Custodians must also furnish a statement to the participant by the same adjusted May deadline. The optional December 31 fair market value (FMV) statement uses the adjusted January deadline. Contribution reporting follows the adjusted May deadline.

Systematic reconciliation requires filtering ledger codes into the correct Form 5498-SA reporting boxes. Custodian systems must separate HSA data from Archer MSA and Medicare Advantage MSA data, checking the appropriate account type in Box 6.

Box 1 is exclusively for Archer MSA contributions from an employee or self-employed person. Custodian systems must enforce rules ensuring no HSA information is ever populated in Box 1.

Custodians frequently receive bulk ACH files containing employer contributions and employee cafeteria-plan salary reductions. For Form 5498-SA reporting, the custodian's responsibility is to record the date of receipt and the total amount. Both employer funds and employee salary reductions received during the calendar year are aggregated into Box 2.

Account holders often confuse their W-2 Box 12 (Code W) reporting with their 5498-SA Box 2 totals. Custodian customer service teams should be prepared to explain that Box 2 reflects cash actually received by the custodian during the calendar year, regardless of when the employer processed the payroll run. Timing differences at year-end between payroll deduction dates and actual custodian receipt dates are common reconciliation items.

Accurate reporting requires filtering out transactions that increase the account balance but are not reportable contributions. A direct trustee-to-trustee transfer from one HSA to another HSA is not reported as a contribution or a rollover. Custodian intake processes must properly flag incoming checks or wires as transfers rather than regular deposits.

If an account holder repays a mistaken distribution (e.g., an expense that was not a qualified medical expense), the custodian may allow the return of the funds. According to the IRS instructions, do not treat the repayment of a mistaken distribution as a contribution on Form 5498-SA. Operations teams must ensure these specific ledger corrections bypass the Box 2 and Box 3 aggregation logic.

Fictional Example: An HSA custodian is preparing a 2026 Form 5498-SA for account holder J. Doe. The system ledger shows the following activity:

• March 10, 2026: Received $1,000 personal deposit designated for tax year 2025.
• Monthly (Jan-Dec 2026): Received $200/month ($2,400 total) from employer payroll.
• August 15, 2026: Received $500 direct trustee-to-trustee transfer from prior HSA.
• February 5, 2027: Received $800 personal deposit designated for tax year 2026.

Reconciliation:

• Box 2 (Calendar Year): The $1,000 deposit (despite being designated for 2025) was received in 2026. The $2,400 payroll deposits were received in 2026. Box 2 total is $3,400.
• Box 3 (Subsequent Year): The $800 deposit was received in 2027 but designated for 2026. Box 3 total is $800.
• Excluded: The $500 trustee-to-trustee transfer is excluded from all contribution boxes.

This systematic approach ensures the custodian correctly separates cash flows based on receipt date and participant designation, while safely excluding non-reportable transfers.

Special reporting rules apply when an account is closed or an account holder dies. If a regular contribution is made to an HSA that is subsequently closed by the custodian under USA PATRIOT Act CIP requirements, the initial contribution (or rollover) must still be reported on Form 5498-SA for that calendar year.

In the year an HSA owner dies, the custodian must file Form 5498-SA and furnish a statement for the decedent. If the designated beneficiary is the surviving spouse, the spouse becomes the new account holder. If the beneficiary is not the spouse (or there is no designated beneficiary), the account ceases to be an HSA. Tax operations must ensure the ledger accurately cuts off contribution aggregation on the date of death for non-spouse beneficiaries, while capturing the correct FMV for closing the account.

For an HSA or Archer MSA with a total distribution during the year and no contributions for that year, the instructions generally waive a form issued solely to report zero December 31 FMV. Keep that exception separate from the active-account furnishing exception: when a compliant January FMV statement was supplied and there were no reportable contributions, including rollovers, another participant statement may be unnecessary, but IRS FMV filing remains required.