The 2027 Health Savings Account (HSA) contribution limits are $4,550 for individual coverage and $9,050 for family coverage, according to the IRS. If you are 55 or older by December 31, 2027, you can contribute an additional $1,000 as a catch-up contribution. With just weeks remaining in the year, now is the time to review your contributions and top off your account to maximize this triple tax advantage.

Why the December 31 Deadline Matters

Unlike retirement accounts such as IRAs, which allow contributions until the tax filing deadline (typically April 15), HSA contributions must be made by December 31 to count for the tax year. Contributions made through payroll deductions are credited based on the pay period date, not when the funds actually reach your HSA custodian. Direct contributions you make yourself must be postmarked or processed by December 31.

How to Top Off Your HSA

If you have not reached the annual limit, you have three main options to increase your 2027 contributions before year-end:

Increase your payroll deduction. If your employer offers HSA contributions through payroll, contact your HR or benefits department immediately to increase your per-paycheck contribution. Most employers require several business days to process changes, so act quickly. Payroll contributions offer an additional advantage: they avoid FICA taxes (Social Security and Medicare), which direct contributions do not.

Make a direct contribution. You can contribute directly to your HSA through your HSA custodian’s website or by mailing a check. These contributions are tax-deductible when you file your return, even if you do not itemize deductions. Verify your custodian’s processing timeline to ensure the contribution posts by December 31.

Coordinate with employer contributions. If your employer contributes to your HSA, those amounts count toward your annual limit. Check your total year-to-date contributions (yours plus employer) before adding more to avoid exceeding the limit, which triggers a 6% excise tax on excess contributions.

Catch-Up Contributions

If you turn 55 at any point during 2027, you qualify for the additional $1,000 catch-up contribution, bringing your individual limit to $5,550 or your family limit to $10,050. Both spouses can make catch-up contributions if both are 55 or older, but each must have a separate HSA account. You cannot split one family HSA for catch-up purposes.

Read also: Year-End Tax Planning: How to Harvest Losses to Offset Capital Gains Before December 31

Eligibility Requirements

To contribute to an HSA for 2027, you must be enrolled in a High Deductible Health Plan (HDHP) as of the first day of the month. For 2027, an HDHP is defined as a plan with a minimum deductible of $1,650 for individual coverage or $3,300 for family coverage. You cannot be enrolled in Medicare, claimed as a dependent on someone else’s tax return, or covered by additional non-HDHP health coverage (with certain exceptions for preventive care and specific insurance types).

The Triple Tax Advantage

HSA contributions reduce your taxable income for 2027 (contributions are tax-deductible), grow tax-free while invested, and come out tax-free when used for qualified medical expenses. No other account offers this combination. Qualified expenses include deductibles, copays, prescriptions, dental and vision care, and many over-the-counter medications. After age 65, you can withdraw funds for any purpose without penalty, though non-medical withdrawals are taxed as ordinary income (similar to a Traditional IRA).

Action Steps Before December 31

Review your HSA statement to see your total 2027 contributions. Calculate the difference between your contributions and the annual limit. If you are using payroll deductions, request an increase by mid-December to ensure the final contributions process in time. If contributing directly, initiate the transfer at least one week before year-end to account for processing delays. Verify with your HSA custodian that contributions are coded for the 2027 tax year, not 2028.

Maxing out your HSA is one of the most effective year-end tax moves available. The combination of immediate tax deduction, tax-free growth, and tax-free withdrawals for medical expenses makes the HSA a powerful savings vehicle for current healthcare costs and future retirement medical expenses.

This article provides general educational information about HSA contribution limits and tax treatment. Contribution limits and tax rules are subject to change; verify current IRS guidelines at IRS.gov before making contribution decisions. Consult a tax advisor or financial professional for advice specific to your situation.