Net to Gross Calculator - Payroll Gross-Up

The net to gross calculator solves the gross pay needed to leave a chosen net amount after payroll withholding assumptions. Use it for a promised after-tax bonus, a relocation payment, a taxable allowance, a stipend, or a one-time reimbursement where the payee needs a specific take-home amount instead of an unknown gross check.

• • Bonus gross-up: Estimate the gross bonus needed when an employee should receive a fixed net bonus after withholding.
• • Taxable allowance: Model a relocation, travel, phone, or housing allowance when the employer intends to cover the tax effect.
• • Payroll estimate: Translate a target net check into a gross amount before sending assumptions to payroll.
• • Scenario review: Compare the result with and without FICA or with different state and local withholding percentages.

A gross-up is not the same as a final income tax return. It is a payroll estimate. The calculator uses the rates you enter, applies Social Security and Medicare settings when selected, and solves for the gross amount that leaves the desired net check. If your payroll system uses different taxable wage definitions, benefit deductions, or state rules, use those system values as the final authority.

This tool is most useful before a payment is approved. It helps the payer budget the full gross cost and gives the payee a clearer expectation of the net check. For ordinary paycheck planning, compare the final result with a take-home paycheck workflow rather than treating one gross-up payment as a full-year salary estimate.

If you need to start from regular gross wages instead of a promised net amount, the take-home paycheck calculator estimates the paycheck direction this page works backward from.

The core calculation starts with net pay and works backward. Because Social Security and Additional Medicare can change at wage thresholds, the calculator solves the equation iteratively.

• Target net pay: The after-withholding amount you want the worker to receive.
• Federal rate: The federal withholding percentage applied to the gross payment in this estimate.
• State/local rate: The combined state, city, or local percentage applied to the same gross payment.
• FICA settings: The Social Security and Medicare assumptions, including year-to-date wages for threshold handling.

When every rate applies to every dollar, the shortcut is gross pay equals target net pay divided by one minus the combined withholding rate. For example, a 25% total rate means $750 net requires $1,000 gross. Payroll taxes make some cases less direct because Social Security stops at the wage base and Additional Medicare starts only after a threshold.

The gross-up result should be reviewed as a payroll instruction estimate, not a legal determination. If the payment is a bonus or other supplemental wage, use the withholding method your payroll team will actually apply.

According to IRS Publication 15, the 2026 supplemental wage withholding rate remains 22%, with 37% applying to supplemental wages over $1 million.

When the payment is specifically a bonus, the bonus tax calculator helps compare withholding on bonus pay before deciding which gross-up rate to enter here.

These concepts explain why a gross-up can be larger than expected and why a payroll check may not match a simple tax-rate estimate.

The calculator separates federal withholding, total withholding, and FICA withholding so you can see what is driving the gross-up. If a result looks too high, check whether state/local withholding, FICA, or an unusually high federal percentage is responsible.

For salary planning, gross-up math answers a narrower question than annual compensation. Use the net to gross calculator when the net check is fixed; use a salary page when recurring pay frequency, hours, and annualized wage comparisons are the real question.

When you already know the gross wage and need the opposite direction, the gross to net calculator estimates net pay from gross pay assumptions.

Use the fields in the same order payroll usually reviews the payment: target amount, income-tax assumptions, FICA settings, and year-to-date wages.

1. 1 Enter the target net pay: Type the exact after-withholding amount the person should receive.
2. 2 Set federal withholding: Use the federal percentage your payroll process will apply, such as a supplemental wage percentage or another approved rate.
3. 3 Add state and local withholding: Enter a combined percentage for state, city, county, or local withholding if those taxes apply.
4. 4 Choose FICA handling: Leave FICA on for ordinary employee wages, or turn it off only when the payment is not subject to employee FICA in your setup.
5. 5 Enter year-to-date wages: Use taxable wages already paid this calendar year so wage-base thresholds are handled more carefully.
6. 6 Review gross and withholding: Compare required gross pay, total withholding, and modeled net pay before using the estimate in payroll instructions.

Suppose a manager wants an employee to receive a $2,500 net relocation payment. Payroll says to model 22% federal withholding, 4% state withholding, and standard employee FICA. Enter those values, review the required gross pay, then document the assumptions with the payment request so finance can reconcile the budgeted cost.

For a broader payroll view that includes employer and employee payroll tax context, use the payroll tax calculator alongside this gross-up result.

A net-to-gross estimate is useful because the payer usually budgets gross cost while the payee cares about take-home cash.

• • Budget the full payment: See the gross amount needed instead of approving only the net promise.
• • Explain the difference: Show why a $1,000 net promise can require a much larger gross payment once withholding is added.
• • Compare assumptions: Run side-by-side scenarios with different federal, state, or FICA settings before choosing a payroll instruction.
• • Plan supplemental payments: Estimate one-time bonuses, allowances, stipends, and taxable reimbursements before the payment cycle closes.
• • Catch threshold effects: Use year-to-date wages to see when Social Security or Additional Medicare treatment changes the estimate.

The result also helps with communication. Instead of telling a worker only that taxes were added, you can show the modeled gross payment, the withheld amount, and the net check that the estimate was designed to produce.

For hourly workers, a gross-up payment may sit alongside regular hourly wages, overtime, and deductions. Use a wage conversion page when the question is about recurring pay rates rather than a specific target net payment.

If the payment needs to be compared with recurring wage expectations, the hourly to salary calculator converts hourly pay into annual salary context.

Small changes in withholding assumptions can move the required gross amount sharply, especially when the target net amount is large.

• • This calculator does not compute a full federal or state income tax return. It models withholding from the rates and thresholds entered.
• • It does not include benefit deductions, retirement contributions, garnishments, employer payroll tax cost, or state-specific wage-base rules.
• • Final payroll treatment can depend on the payment type, payroll provider setup, employee forms, and local law.

If the payment is a taxable fringe benefit, confirm whether the value must be included in wages before grossing it up. Some benefits are excluded by rule, while others are taxable and may need payroll reporting.

For annual tax planning, this page is only a gross-up worksheet. A federal income tax estimate can help with broader bracket exposure, credits, deductions, and year-end liability questions.

According to IRS Publication 15, the 2026 employee Social Security rate is 6.2% up to a $184,500 wage base, Medicare is 1.45% on covered wages, and Additional Medicare withholding is 0.9% on wages over $200,000.

According to IRS Publication 15-B, taxable fringe benefits generally must be included in the recipient's pay unless a specific exclusion applies.

For year-end tax liability questions beyond payroll withholding, the federal income tax calculator gives a broader federal income tax estimate.