Methodology: Models HSA payroll contributions as reducing federal taxable income and FICA wages. Some states treat HSA contributions differently, so state results are planning estimates.
Payroll HSA contributions can reduce federal income tax and FICA, which makes them especially tax-efficient when you are eligible.
This calculator separates HSA contributions from 401(k) contributions because the FICA treatment is usually different.
Frequently Asked Questions
Does an HSA reduce paycheck taxes?
When contributed through payroll, HSA contributions usually reduce federal income tax and FICA wages, which can make the paycheck impact smaller than the contribution amount.
Can anyone contribute to an HSA?
No. You generally need to be covered by an HSA-eligible high-deductible health plan and meet IRS eligibility rules.
Is an HSA better than a 401(k)?
They solve different problems. An HSA can be very tax-efficient for medical expenses, while a 401(k) is primarily a retirement account.
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