Find the gross amount needed so someone nets a target take-home after taxes — the math behind grossing up a bonus or reimbursement.
Gross-up = net ÷ (1 − total tax rate). Use the supplemental federal rate (often 22%) plus state and FICA for bonuses. This is a flat-rate estimate; actual withholding can differ with wage bases (Social Security cap) and bracket effects. Not tax advice.
When you promise someone a specific take-home — a $1,000 bonus, a relocation reimbursement — you must pay more than that so the amount survives withholding. Grossing up divides the target net by one minus the total tax rate, so the after-tax result lands exactly on target.
Gross = net ÷ (1 − total tax rate)
The IRS supplemental wage rate is commonly 22% federal, plus your state rate and 7.65% FICA. High earners may hit different rates — this is a flat-rate estimate.
Yes — for signing bonuses, relocation, and taxable reimbursements where the employer wants the employee to receive a clean, promised amount.
Related: take-home pay calculator · paycheck calculator · income tax calculator · all free calculators.
More free taxes & bookkeeping tools — no signup, works on any device.
Yes. The Gross-Up Calculator is completely free, runs in your browser, and never asks for a signup, email, or download. Enter your numbers and the result updates instantly.
It uses standard formulas and recalculates the moment you change a value, so the math is exact for the inputs you enter. Treat the result as a reliable planning estimate; for decisions with legal or tax consequences, confirm the figures with a qualified professional.
Yes. The calculator is mobile-friendly and works on any phone, tablet, or computer — there is no app to install and nothing to save.
Yes. Scroll to “Add this free calculator to your site” above and copy the embed snippet to place the live calculator on your blog or website for free.
Last reviewed: September 2026. Free to use, no signup — Gross-Up Calculator by ToolWise Digital.
Copy the snippet to embed the live calculator on your blog or website — free for any site. The small “Calculator by ToolWise Digital” credit line keeps it free; you're welcome to remove it, but we appreciate you leaving it.
Ready-made Google Sheets & Excel trackers for money, taxes, and small business — each with a free phone version.
Browse the shop →Subscribe and we'll email you our Simple Monthly Budget (Google Sheets & Excel, plus a phone version) — free. Then the occasional short note on pricing, bookkeeping, and the money side of a small business. No spam — unsubscribe anytime.