HSA Annual Contribution Review Checklist (2026) | HSA

Collect all HSA account statements for the full tax year.

Statements show contributions from all sources (payroll, employer, personal), interest, and investment activity. They are your primary source for the audit trail.

Gather your final pay stubs showing year-to-date HSA payroll deductions.

Paystubs verify the exact amount you contributed via payroll, which may not be instantly reflected in monthly HSA statements and is needed for a precise total.

Locate your HDHP insurance policy documents and declarations page.

You must prove you were covered by a qualified High Deductible Health Plan for each month you contributed. The policy shows the deductible amounts.

Check for any other health coverage (like a spouse's plan or Medicare) that would disqualify you.

Being covered by a non-HDHP plan, a general-purpose FSA, or Medicare makes you ineligible for HSA contributions for those months, potentially lowering your limit.

Confirm your HDHP deductible meets the IRS minimums for the tax year (e.g., $1,600 single / $3,200 family for 2026).

If your plan's deductible is below the IRS minimum, it is not HSA-eligible, and any contributions made while on that plan are excess.

Note any months you were not covered by any HDHP.

Months without eligible HDHP coverage reduce your contribution limit. Your limit is prorated by the number of eligible months.

Record the dates of any mid-year changes in HDHP coverage (single to family or vice versa).

Switching plan types changes your monthly contribution limit. You must prorate the limit based on the number of months under each coverage type.

Sum all personal contributions made via payroll deduction.

This is typically the largest portion. Use year-to-date figures from your final pay stub for accuracy, not estimates.

Add any one-time personal contributions made directly to your HSA provider.

Direct contributions are easy to forget but count fully toward your limit. Find them on your HSA statements as one-time deposits or transfers.

Include all employer contributions (matching or lump-sum).

Employer money fills your limit bucket. Missing this is a top reason for over-contribution. Check your W-2, Box 12, Code W.

Determine your maximum contribution limit based on your coverage and age.

For 2026, know the base limits (e.g., single: $4,150, family: $8,300) and add $1,000 catch-up if you were 55+. Then prorate if you weren't eligible all year.

Prorate your limit if you had HDHP coverage for only part of the year.

Your limit is (Annual Limit / 12) x (# of eligible months). If you were eligible for only 8 months, you can only contribute 8/12 of the annual limit.

Subtract your total contributions from your calculated limit to find the variance.

A positive number means you can still contribute before the tax deadline. A negative number means you have an excess contribution that needs correction.

If you have multiple HSAs, combine contributions from all accounts.

The IRS looks at the total contributed to all HSAs in your name. You cannot bypass the limit by using multiple providers.

Calculate any earnings on excess contributions if you over-funded.

When removing excess contributions, you must also remove any net income attributable to them. Your HSA provider can help with this calculation.

If you over-contributed, contact your HSA provider to request a 'return of excess contribution.'

This formal process removes the excess and its earnings, which you must report on your tax return. A regular withdrawal does not avoid the 6% penalty.

Adjust your payroll deductions for the new year based on your planned contribution.

Divide your target contribution by the number of pay periods to set the correct deduction. This prevents over-contribution via payroll.

Factor in known employer contribution amounts for the coming year.

Ask your HR about any planned employer HSA contributions for the new year and reduce your personal payroll deductions accordingly to stay under the limit.

Consider front-loading contributions if your cash flow allows.

Contributing early in the year gives your funds more time to grow tax-free if invested. Ensure you won't lose HDHP eligibility later in the year.

Review your HSA investment allocation and rebalance if needed.

Your HSA is a long-term investment account for retirement healthcare. An annual review ensures your asset mix still matches your risk tolerance and timeline.

Set a calendar reminder for a mid-year check if your HDHP coverage might change.

If you anticipate a job change, marriage, or birth of a child, a mid-year review will help you adjust contributions before going over the new prorated limit.

Decide if you will make any prior-year contributions before the tax deadline.

If you under-contributed, you have until the tax filing deadline to add money for the prior year. Decide the amount and schedule the contribution.

Verify Form 5498-SA from your HSA provider matches your calculations.

This form reports contributions to the IRS. Compare it to your records. Discrepancies must be resolved with your provider before filing.

Ensure your W-2, Box 12, Code W correctly shows your payroll contributions.

This amount is reported to the IRS. If it's wrong, contact your payroll department for a corrected W-2C, as it affects your taxable income.

Complete IRS Form 8889 using your reviewed contribution numbers.

This is the form attached to your Form 1040 that reports HSA contributions and deductions. Accurate numbers from your review prevent filing errors.

File Form 5329 if you had excess contributions to report the 6% tax or their removal.

This form is required to report and pay the excise tax on excess contributions or to show you corrected them. Not filing it can trigger an IRS notice.

Create a dedicated digital folder for this year's HSA review documents.

Store statements, calculation sheets, and corrected forms together. The IRS can audit returns for three years, so you need quick access to proof.

Note any lessons learned to improve next year's process.

Did you almost over-contribute because of an employer match? Writing a note helps you set better payroll deductions or reminders for the following year.

Share your contribution plan with your spouse or financial advisor if applicable.

Ensures everyone is aligned on family contribution limits and strategies, especially if you have separate HSAs or complex eligibility situations.