Tested Templates & Toolstested before it ships

● Free tool · open enrollment

HSA calculator: contributions, tax saved and growth to 65

See how much you and your employer can put in your health savings account under the 2026 limit, the tax it saves, and what it grows to by the time you stop contributing: paying medical bills from the HSA, or paying them yourself and saving the receipts.

✓ TestedSame calculation as the tested spreadsheet
HSA when you stop contributing–
You + employer this year
Room left under this year's limit
You put in / employer put in
Tax saved on your contributions
Medical costs paid from the HSA
Receipts saved to reimburse later
AgeContributedBalanceReceipts

2026 limits: $4,400 self-only, $8,750 family, +$1,000 from age 55, growing with inflation here; employer money counts toward them. Contributions and medical costs grow with inflation. Each year: balance × (1 + return) + contributions − medical costs paid from the HSA. Not included: fees, states that tax HSA contributions. Projections, not tax advice.

How it works

The yearly limit covers your contributions and your employer's together: $4,400 for self-only coverage and $8,750 for family coverage in 2026, plus $1,000 from age 55. Choosing the maximum means you put in whatever the limit leaves after your employer. Your contributions are made before tax, so each dollar saves your tax rate. Each year the balance grows at your expected return. If you pay medical bills from the HSA, they come out of the balance; if you pay them yourself and keep the receipts, the money stays invested and the receipts can be reimbursed from the HSA later, tax-free. In the example, maxing out a family HSA from 35 reaches $1,012,519 by 65 with $85,636 of receipts saved, against $813,546 when the same bills are paid from the account.