What's inside
- Elections: up to 25 benefits (premiums, HSA, health and dependent care FSAs, 401(k), Roth, life insurance…), marked by how they're taken: pre-tax cafeteria plan (no income tax or FICA), pre-tax 401(k) (no income tax), after-tax / Roth, or employer money
- Summary: taken from each paycheck, tax saved, your cost after tax and employer money for both years; the change in take-home pay per paycheck and per year
- Limit checks: HSA (you + employer, 2027 limits filled in, +$1,000 from 55), health FSA, dependent care FSA ($7,500) and 401(k) with catch-up: OK with the room left, or over by how much
- Sample: a family moving from a PPO to an HDHP with an HSA, raising the dependent care FSA to $7,500 and adding a Roth 401(k): take-home down $239.55 a paycheck, $8,438 of tax saved, both accounts just under their limits
Checked, not just designed: all 261 formulas recalculate with zero errors, and every result was checked against an independent calculation in 10 cases.
Works in Excel and Google Sheets. An estimate at your tax rates, not a payroll calculation. Not tax advice.
Try the free version first
The free online calculator uses the same model for a quick answer. The spreadsheet adds tracking, history and the full views.