HSA Contribution Calculator 2026: Limit & Deduction
Reviewed August 9, 2026Uses IRS Revenue Procedure 2025-19Editorial policy
Calculate how much you can still contribute to an HSA in 2026 after employer and personal deposits. The official base limits are $4,400 for self-only coverage and $8,750 for family coverage, plus a possible $1,000 age-55 catch-up.
Remaining room = prorated base limit + prorated catch-up - employer deposits - personal depositsHow to calculate your 2026 HSA contribution limit
Start with the 2026 annual limit of $4,400 for self-only coverage or $8,750 for family coverage. Add the $1,000 catch-up if you are 55 or older, prorate the total for eligible months when required, then subtract every employer and personal deposit made to your HSAs for 2026.
For a month to count under the regular monthly method, you generally must be HSA eligible on its first day. That includes qualifying HDHP coverage and generally means you are not enrolled in Medicare and cannot be claimed as another person's dependent.
Worked example: family coverage and age-55 catch-up
A 57-year-old with 12 eligible months, $1,500 in employer deposits and $3,000 already contributed personally has:
$8,750 + $1,000 - $1,500 - $3,000 = $5,250 remaining contribution room.
At a selected 24% federal rate, a deductible $5,250 personal contribution has an illustrative federal income-tax value of $1,260. This is not a refund estimate and excludes state and payroll-tax treatment.
The last-month rule can permit a full-year limit when you are eligible on December 1. For a 2026 calendar-year contribution, the testing period generally continues through December 31, 2027. Losing eligibility during that period can make part of the contribution taxable and may trigger an additional 10% tax, except in limited cases such as death or disability.
Frequently Asked Questions
What are the 2026 HSA contribution limits?
The IRS limit is $4,400 for self-only HDHP coverage and $8,750 for family HDHP coverage. Employer deposits are included in these totals. Eligible people age 55 or older may add a $1,000 catch-up contribution.
What qualifies as a High-Deductible Health Plan for HSA eligibility?
For 2026, the general HDHP minimum deductible is $1,700 for self-only coverage or $3,400 for family coverage. The maximum out-of-pocket amount is $8,500 for self-only coverage or $17,000 for family coverage. Other eligibility rules and statutory exceptions can apply.
Do employer contributions reduce how much I can contribute?
Yes. Employer and employee contributions share the same annual limit. Enter both employer deposits and your own contributions so the calculator can estimate the remaining room.
How do partial-year eligibility and the last-month rule work?
Without the last-month rule, the annual limit is generally prorated by eligible months. If you use the rule for 2026 based on December 1 eligibility, the testing period generally runs through December 31, 2027. If you lose eligibility during that period, part of the contribution can become taxable and may face an additional 10% tax, subject to limited exceptions.
Can I use HSA funds for non-medical expenses?
Yes, but withdrawals for non-medical expenses before age 65 are subject to income tax plus a 20% penalty. After age 65, non-medical withdrawals are taxed as ordinary income (like a traditional IRA) with no penalty.
Do HSA funds roll over year to year?
Yes. HSA balances generally carry forward. Investment availability and minimum cash-balance requirements depend on the account provider.
What happens to my HSA if I change to a non-HDHP?
You keep your existing HSA balance and can continue to use it for qualified medical expenses tax-free. However, you cannot make new contributions until you are again enrolled in an HDHP.
What does the deduction-value estimate include?
It multiplies remaining contribution room by the selected federal income tax rate to illustrate the value of a deductible personal contribution. It is not a refund estimate and does not calculate state taxes, payroll-tax treatment, deductions already claimed, excess-contribution penalties or individual tax circumstances.
Disclaimer: This calculator provides estimates only. Consult a tax professional or licensed insurance advisor for personalized advice.
Decision evidence
Method, verification, and limits
Calculation method
Combines employee, employer, and other contributions by eligibility month and applies age-based catch-up and last-month-rule checks.
Verification step
Confirm high-deductible-plan eligibility, Medicare status, employer deposits, and current IRS annual limits before contributing.
Important limits
This planning result does not determine price, eligibility, policy interpretation, tax treatment, or claim payment. Current forms, state rules, underwriting, and individual facts can change the outcome.
Reviewed by the CoverageFixPro Editorial Team · Updated August 11, 2026
How to Use the HSA Calculator
- Choose coverage — Select self-only or family coverage and enter your age at the end of 2026.
- Count eligible months — Include months when you were HSA eligible on the first day of the month.
- Enter all deposits — Add employer contributions and your own contributions already made for 2026.
- Review remaining room — Compare the result with account records before making another deposit.
Checks Before Contributing
- Confirm that your plan and other coverage make you HSA eligible for each month counted.
- Include deposits made by every employer and contributions made to all HSAs in your name.
- Coordinate family contributions and separate catch-up contributions with a spouse when applicable.
- Do not rely on the last-month rule without understanding its testing period.