Free browser-side tool
Gross-Up Calculator
Estimate the gross amount needed to produce a target net payment at an entered withholding rate.
How the estimate works
Enter the values supplied by your employer, written policy, or work record. The result updates in your browser and is not saved.
Formula
Estimated gross payment = target net payment ÷ (1 − combined withholding rate entered as a decimal).
Worked example
Inputs: $1,000 target net payment and an assumed combined withholding rate of 0.25.
Result: $1,000 ÷ 0.75 = $1,333.33 estimated gross payment.
How to read the result
This simplified calculation is useful for a flat-rate planning estimate. A real payroll gross-up can require iteration because federal and state withholding may be progressive and wage caps can apply.
Important limitations
- The combined rate is supplied by you and is not calculated from a tax table.
- Progressive brackets, wage caps, deductions, credits, and supplemental-wage methods are not modeled.
- The result is not a payroll instruction or a guarantee of the final net payment.