When to use a gross-up calculator
- Salary negotiation: work out the salary you need to cover your monthly budget.
- Job offers in different states: find the salary in a high-tax state that matches your current take-home pay.
- Employers: gross up a bonus, award or relocation payment so the employee nets the promised amount. (Supplemental wages paid separately may be withheld at the flat 22% rate instead; see the bonus tax calculator.)
- Freelancers moving to W-2: translate the net income you're used to into a W-2 salary target.
How the gross-up is calculated
We start with a range of possible salaries and run the full 2026 paycheck engine — federal withholding, Social Security, Medicare, state and local taxes, and 401(k) — narrowing the range until the take-home matches your target to the penny. That's more accurate than dividing by an estimated tax rate.