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.
Evidence boundary
The user-entered combined rate controls this simplified algebraic estimate; WageFrame does not derive the rate from tax tables or claim exact payroll withholding.
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.
Frequently asked questions
What does the Gross-Up Calculator calculate?
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.
Does WageFrame save the values I enter?
No. The calculation runs in your browser, and WageFrame does not save the values you enter.
What assumptions should I check before using the result?
Review the formula, worked example, and limitations on this page before relying on the estimate. WageFrame calculates only from the values and assumptions you provide.