HSAs & health costs
How much more can go into the HSA this year?
An HSA contribution calculator on 2026 limits: clients enter coverage, age, what's been contributed and months left to see their maximum, what remains and the monthly amount to reach it.
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What is the HSA contribution limit for 2026?
$4,4002026 · IRS Rev. Proc. 2025-19 for self-only coverage and $8,7502026 · IRS Rev. Proc. 2025-19 for family coverage, plus a $1,0002026 · IRS Publication 969 catch-up at age 55 or older. Employer contributions count toward the limit. Partial-year coverage generally prorates it, and contributions stop once Medicare begins.
Year-end, and again before the filing deadline
Clients with high-deductible plans want to maximize the deduction before year-end, or before filing for the prior year. Those turning 55 or changing coverage mid-year need to know how the rules apply.
What the client types into a search box
“how much more can I put in my HSA this year”
How a client works through it
Choose HDHP coverage
Self-only or family.
Enter age
For the 55+ catch-up.
Enter contributions so far
Including employer contributions.
Enter months left
To spread the remaining amount.
What lands in your inbox
When a client asks your firm to review the result, the request arrives as a contact record with their inputs and results attached, by email and, on paid plans, by webhook to your CRM.
Received
Coverage tier, age, amount contributed and months remaining show room left and urgency. Clients near 65 may face Medicare timing issues; those who changed coverage may need proration help.
Maximum, remaining and monthly
Maximum Contribution combines the Base Limit and any Catch-Up (55+). Remaining You Can Contribute subtracts what's already in. Monthly to Reach Max spreads the remainder over the months left.
Prorating for partial-year coverage and the last-month rule are details for the firm.
Results shown: Maximum Contribution · Base Limit · Catch-Up (55+) · Remaining You Can Contribute · Monthly to Reach Max.
Why HSA funding questions suit tax firms
HSA contributions are deductible and can be made up to the filing deadline, so they're actionable at tax time. Mid-year coverage changes and Medicare enrollment create errors that CPAs catch.
Advisers value HSAs as long-term investment accounts.
Follow-ups this request opens
- Make a prior-year contribution before filing
- Prorate limits for partial-year coverage
- Plan HSA contributions around Medicare enrollment
- Invest HSA funds for the long term
What this calculator leaves out
- Proration details and the last-month rule are simplified.
- Medicare enrollment effects not modeled.
- Spouses' combined family limits not split.
- State tax treatment not included.
Platform disclaimer shown under the calculator: Estimates only. Based on the 2026 IRS HSA limits ($4,400 self-only, $8,750 family, +$1,000 at 55+). Your limit is prorated for partial-year HDHP coverage, includes employer contributions, and drops to $0 once you enroll in Medicare. Contributions for a tax year can be made until that year's filing deadline. Confirm with a tax professional.
Compliance note for firms
HSA eligibility depends on coverage details; advising a contribution amount is written tax advice under Circular 230 §10.37. Excess contributions carry an excise tax, so confirm eligibility first.
Not legal advice. See our disclaimer and the guide to compliance for client calculators.
2026 figures this page relies on
| Figure | Value | Tax year | Source |
|---|---|---|---|
| HSA limit, self-only coverage | $4,400 | 2026 | IRS Rev. Proc. 2025-19 |
| HSA limit, family coverage | $8,750 | 2026 | IRS Rev. Proc. 2025-19 |
| HSA catch-up, age 55+ (statutory, not indexed) | $1,000 | 2026 | IRS Publication 969 |
The same values drive the calculator. Full list on the 2026 figures page.
Terms your client sees in the calculator
These definitions appear in the calculator's collapsible Definitions block, so clients don't have to call to ask what a label means.
- HSA contribution limit
- The most that can go into a Health Savings Account for one tax year, counting your deposits and your employer’s together. For 2026 the limit is $4,400 for self-only coverage and $8,750 for family coverage (IRS Rev. Proc. 2025-19). This calculator starts from that base limit, adds any catch-up, and subtracts what is already in.
- Health Savings Account (HSA)
- A tax-advantaged account paired with a high-deductible health plan. Contributions are tax-deductible or made pre-tax through payroll, growth is not taxed, and withdrawals for qualified medical expenses are tax-free. Unused money rolls over from year to year and stays with you if you change jobs or health plans.
- High-deductible health plan (HDHP)
- A health plan with a higher deductible and out-of-pocket structure that meets IRS requirements, which is what makes you eligible to contribute to an HSA. The IRS sets the minimum deductible and maximum out-of-pocket amounts each year. Whether your HDHP covers only you or your family determines which base limit this calculator uses.
- Self-only vs. family coverage
- The coverage tier of your HDHP. Self-only covers just the account holder; family covers the holder plus at least one other person. The tier sets your base limit — $4,400 self-only or $8,750 family for 2026 (IRS). If coverage changes mid-year, the limit is generally figured month by month for each tier.
- Catch-up contribution (55+)
- An extra amount account holders can add once they are 55 or older by the end of the tax year: $1,000, fixed by statute (IRS Pub. 969, applies for 2026). It is added on top of the base limit. If both spouses are 55+, each needs their own HSA to make a catch-up; it cannot be doubled in one account.
- Employer contributions
- Money your employer deposits into your HSA, including amounts routed through a cafeteria plan. They count toward the same annual limit as your own deposits, so this calculator treats them as already contributed. Leaving them out is a common way to overshoot the limit and end up with an excess contribution to correct.
In our glossary: Health savings account · High-deductible health plan
HSA Contribution calculator: questions from firms and clients
What are the 2026 HSA limits?
$4,4002026 · IRS Rev. Proc. 2025-19 self-only, $8,7502026 · IRS Rev. Proc. 2025-19 family, plus $1,0002026 · IRS Publication 969 at 55+.
Do employer contributions count?
Yes, toward the same limit.
When is the contribution deadline?
Generally the tax filing deadline for that year.
What if I enroll in Medicare?
Contributions must stop; timing rules can be tricky.
What if I had coverage only part of the year?
The limit is generally prorated, with an exception under the last-month rule.
Can both spouses take the catch-up?
Each eligible spouse needs their own HSA for their catch-up.
What if I over-contribute?
Withdraw the excess before the deadline to avoid an excise tax.
Which plan includes it?
Network. The three HSA calculators are the only tools on this site that Practitioner and Firm don't include. Network has a 14-day trial. See pricing.
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