Why the HSA is worth maxing out
A Health Savings Account is the only account in the US tax code with a triple tax advantage: contributions are tax-deductible (or pre-tax through payroll), the money grows tax-free, and withdrawals for qualified medical expenses are tax-free too. There is no “use it or lose it” rule as with an FSA — the balance rolls over year after year and is yours to keep, even if you change jobs or health plans.
To contribute, you need a qualifying high-deductible health plan (HDHP) and must meet the other eligibility rules. The amount you can put in depends on your coverage type, your age, and how many months of the year you are eligible — which is exactly what this calculator works out.
After age 65, the HSA gets even more flexible
Estimate only — not tax advice
Count each month you are HSA-eligible on the 1st of the month.
Your 2026 maximum HSA contribution
$4,400
Does your plan qualify as an HDHP for 2026?
- Minimum deductible: $1,700 self-only / $3,400 family
- Out-of-pocket maximum no more than: $8,500 self-only / $17,000 family
How this calculator works
It applies the 2026 IRS contribution limits from IRS Revenue Procedure 2025-19 (2026 inflation-adjusted HSA/HDHP limits). Partial-year eligibility is prorated by the number of months you are HSA-eligible (the sum-of-monthly-limits method), and the age-55 catch-up is prorated the same way, with the last-month rule offered as an alternative. The tool assumes you meet the other HSA eligibility requirements. It is an estimate, not tax advice — confirm your eligibility and contribution with a tax professional or IRS Publication 969.
HSA Contributions — FAQ
What is the 2026 HSA contribution limit?
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For 2026, the IRS limit is $4,400 for self-only HDHP coverage and $8,750 for family coverage. If you are age 55 or older, you can add a $1,000 catch-up contribution on top. These figures come from IRS Revenue Procedure 2025-19 and are adjusted for inflation each year.
Who is eligible to contribute to an HSA?
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To contribute, you generally must be covered by a qualifying high-deductible health plan (HDHP), have no other disqualifying health coverage, not be enrolled in Medicare, and not be claimed as a dependent on someone else's tax return. Eligibility is determined month by month, on the first day of each month. Losing HDHP coverage or enrolling in Medicare mid-year reduces how much you can contribute for that year.
What is the HSA catch-up contribution?
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Accountholders who are 55 or older by the end of the year can contribute an extra $1,000 above the standard limit. The catch-up is per person, so if both spouses are 55+, each can make a $1,000 catch-up — but each spouse's catch-up must be deposited into an HSA in that spouse's own name.
What if I only have HDHP coverage for part of the year?
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Your limit is generally prorated by the number of months you were HSA-eligible (counted on the first of each month). There is one important exception: under the IRS "last-month rule," if you are eligible on December 1, you may contribute the full annual amount for that year — but you must remain HSA-eligible through the entire following year (a 13-month testing period), or the extra amount becomes taxable and subject to a penalty.
What makes a health plan an HDHP for 2026?
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For 2026, a qualifying HDHP must have a minimum annual deductible of at least $1,700 for self-only coverage or $3,400 for family coverage, and its out-of-pocket maximum cannot exceed $8,500 self-only or $17,000 family (these limits exclude premiums). Only a plan meeting these rules lets you open and contribute to an HSA.
Related guides and tools
Jennifer Walsh
Editorial Lead, Health & Medicare
This article was researched and written by the Cover Forge USA editorial team against federal sources (NAIC, CMS, FEMA, DOL, SSA, state DOIs) and standard policy forms. Bylines organize content by topic — they do not assert individual licensure. See our editorial-policy for details.
Reviewed July 2026
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