HSA Contribution Calculator
Pick your coverage, enter your age and what you plan to contribute. The calculator shows the 2026 cap - $4,400 self-only, $8,750 family, plus $1,000 catch-up at 55 or older - the tax saving with payroll tax included, and an over-contribution warning before the IRS charges you for it.
Bank pages quote last year and stop there. This one prices the full stack - bracket plus the 7.65% payroll tax that payroll contributions skip - and nags about the 6% excise tax on the overshoot, the part the enrollment emails never mention.
How to use
- Match coverage to your HDHP - self-only or family - and add the catch-up at 55+.
- Enter your planned contribution and bracket from your pay stub.
- Contribute through payroll when possible; that is what skips the payroll tax too.
Frequently asked questions
What are the 2026 HSA contribution limits?
$4,400 for self-only coverage, $8,750 for family, plus a $1,000 catch-up for anyone 55 or older - the catch-up counts inside your own contribution. Employer seed money shares the same cap.
What happens if I over-contribute?
The excess earns a 6% excise tax every year it stays, on top of ordinary tax at withdrawal. Fix it by pulling the excess plus earnings before the filing deadline, or by reducing next year cap-room.
Why do people call the HSA triple tax free?
Contributions skip income tax, growth is untaxed, and withdrawals for qualified medical care are untaxed at any age - no other account stacks all three. After 65 it behaves like a traditional IRA for non-medical spending.
Should I spend HSA money now or save receipts?
If cash flow allows, pay care costs out of pocket and bank the receipts - the account grows untaxed and qualified withdrawals can be reimbursed decades later. That is the compounding engine most HSA owners never start.