HSA Contribution Tax Savings Estimator

Estimate your combined federal and state tax savings from funding a health savings account. Choose your filing status, model the contribution amount, and optionally layer in catch-up eligibility to see the eligible portion, tax benefit, and after-tax cost.

Enter 1 for self-only HDHP coverage or 2 for family HDHP coverage.
Sum of employee payroll deductions and employer deposits for the year.
Use your marginal tax bracket from IRS tables rather than your effective rate.
Defaults to 0.00% if blank for states without an income tax.
Defaults to $0 unless an eligible individual aged 55+ can contribute the catch-up amount.

Consult a tax professional for personalized guidance on HSA eligibility and deductions.

Examples

  • Family filer contributes $8,300 with 24.00% federal and 5.00% state marginal rates → eligible $8,300.00, tax savings $2,407.00 (federal $1,992.00 • state $415.00), net after-tax cost $5,893.00.
  • Single filer plans $5,500 contribution with $1,000 catch-up, 22.00% federal, 0.00% state → eligible $5,150.00, tax savings $1,133.00, net cost $4,017.00, excess flagged $350.00 above the IRS limit.

FAQ

Do employer contributions count toward the limit?

Yes. Employer HSA funding plus your payroll deductions cannot exceed the IRS limit, so add both amounts to the planned contribution input to see the combined impact.

What happens if I contribute above the limit?

The calculator flags excess amounts. Request a return of excess contributions from your HSA custodian before the tax deadline to avoid the 6% excise tax on the surplus.

Can I adjust for partial-year HDHP coverage?

Pro-rate the planned contribution based on eligible months, or apply the IRS last-month rule if you expect to remain HSA-eligible through the following calendar year.

Does payroll withholding matter?

HSA contributions made via payroll reduce Social Security and Medicare wages in addition to income tax, so plug in the pre-tax payroll deduction amount for the most accurate savings snapshot.

Additional Information

  • Default limits reflect 2024 IRS guidance: $4,150 for self-only HDHP coverage and $8,300 for family coverage before catch-up dollars.
  • Catch-up allowance applies to each eligible individual aged 55 or older with their own HSA; couples can contribute $2,000 if both qualify and own separate accounts.
  • Tax savings equal the eligible contribution multiplied by the sum of your marginal federal and state rates entered above.
  • The excess contribution flag helps you adjust payroll deductions before year-end to avoid 6% excise penalties.

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