Frequently asked questions
- What is a gross-up?
- A gross-up is the reverse of a normal paycheck calculation. Instead of starting with a gross amount and subtracting taxes to find the net, you start with the net (take-home) you want a worker to keep and solve for the larger gross that, after federal income tax withholding, Social Security, Medicare, state tax, and 2026 employee-paid state worker contributions, leaves exactly that net. Employers commonly gross up relocation payments, sign-on bonuses, or fringe benefits so the recipient is not out of pocket for the tax.
- How does this net-to-gross calculator find the answer?
- It uses a numeric solver. Because net pay rises smoothly as gross rises, the tool tries gross values and narrows in (a binary search) until the resulting take-home matches your target within a fraction of a cent. The tax math behind each trial uses the IRS Publication 15-T 2026 percentage method for federal withholding, the 2026 FICA rates, and your state rate if you pick one. The result is an estimate, not a payroll instruction.
- Why is the required gross so much higher than my target net?
- Every extra dollar of gross is itself taxed, so to deliver one more dollar of take-home the employer has to add more than a dollar of gross. The higher your marginal bracket and state rate, the larger that gap. This is normal and expected; the calculator simply quantifies it for your inputs.
- Can I rely on this for actual payroll?
- No. This is educational only and not tax, payroll, accounting, or financial advice. It does not model W-4 dependents, multiple jobs, extra withholding, year-to-date wages, or pre-tax benefits. 2026 employee-paid state worker contributions are included for the selected state. Local city or county tax is included when you pick a locality; the default is none. For a real gross-up, confirm the figure with your payroll provider or a qualified CPA.
Net-to-gross, solved.
Tell the calculator the take-home you want a worker to keep, and it solves for the gross pay needed so the net lands on target after federal income tax, Social Security, Medicare, and state tax.
In short
A gross-up calculator works backwards from a desired net (take-home) to the gross pay required to deliver it. Because every extra dollar of gross is itself taxed, the gross is always larger than the net you want, the gap widening with your tax bracket and state rate. PayslipIQ solves this by trying gross values until the after-tax net matches your target, using the IRS Pub. 15-T 2026 percentage method, the 2026 FICA rates, and the SSA 2026 wage base ($184,500). Results are estimates only, your real gross-up depends on W-4 details, local taxes, and employer-specific settings.
| Required gross pay | $7511.85 |
| Federal income tax (est.) | −$1369.54 |
| Social Security (6.2%) | −$439.96 |
| Medicare (1.45%) | −$108.92 |
| State income tax (est.) | −$495.78 |
| CA SDI | −$97.65 |
| Take-home (net) | $5000.00 |
Tax year 2026. Federal withholding uses the IRS Pub. 15-T 2026 percentage method (Standard Withholding tables). Social Security is capped at the SSA 2026 wage base of $184,500. State tax uses the most recently verified flat or top-marginal rate and may not reflect full brackets or mid-year changes. The solved gross is an estimate, so payroll's real gross-up can differ once W-4 details, year-to-date wages, and pre-tax benefits are applied. 2026 employee-paid state worker contributions are included for the selected state. Local city or county tax is included when you pick a locality. Use it as a starting point, not a final figure.
Worked example, $5,000 take-home in California
Suppose an employer wants a relocating worker to keep $5,000 net on a biweekly check, single filer, in California. The calculator raises the gross until the after-tax net hits $5,000.
At that income the worker faces roughly 22% federal withholding, 6.2% Social Security, 1.45% Medicare, and about 6.6% California tax, so the solved gross lands well above $5,000, and the difference is the gross-up the employer absorbs. The same target net in Texas (no state income tax) needs a smaller gross, because there is no state line to cover.
The worked example uses the same IRS Pub. 15-T 2026 percentage method the calculator above runs. Real-world payroll can differ slightly because W-4 dependents, multiple jobs, extra withholding, and local taxes are not modelled here. Use the calculator above for your own numbers.
Gross-up, common questions
- What is a gross-up?
- A gross-up is the reverse of a normal paycheck calculation. Instead of starting with a gross amount and subtracting taxes to find the net, you start with the net (take-home) you want a worker to keep and solve for the larger gross that, after federal income tax withholding, Social Security, Medicare, state tax, and 2026 employee-paid state worker contributions, leaves exactly that net. Employers commonly gross up relocation payments, sign-on bonuses, or fringe benefits so the recipient is not out of pocket for the tax.
- How does this net-to-gross calculator find the answer?
- It uses a numeric solver. Because net pay rises smoothly as gross rises, the tool tries gross values and narrows in (a binary search) until the resulting take-home matches your target within a fraction of a cent. The tax math behind each trial uses the IRS Publication 15-T 2026 percentage method for federal withholding, the 2026 FICA rates, and your state rate if you pick one. The result is an estimate, not a payroll instruction.
- Why is the required gross so much higher than my target net?
- Every extra dollar of gross is itself taxed, so to deliver one more dollar of take-home the employer has to add more than a dollar of gross. The higher your marginal bracket and state rate, the larger that gap. This is normal and expected; the calculator simply quantifies it for your inputs.
- Can I rely on this for actual payroll?
- No. This is educational only and not tax, payroll, accounting, or financial advice. It does not model W-4 dependents, multiple jobs, extra withholding, year-to-date wages, or pre-tax benefits. 2026 employee-paid state worker contributions are included for the selected state. Local city or county tax is included when you pick a locality; the default is none. For a real gross-up, confirm the figure with your payroll provider or a qualified CPA.
Related calculators and guides
Official sources
- IRS Publication 15-T (Federal Income Tax Withholding Methods, 2026)
- IRS Topic 751 (Social Security and Medicare Withholding Rates)
- SSA Contribution and Benefit Base 2026
- IRS Additional Medicare Tax Q&A
PayslipIQ is independent of the IRS, SSA, Department of Labor, every state revenue and labor agency, and every payroll provider. Source links are informational, not endorsement.
PayslipIQ provides educational information and estimated calculations only. It does not provide tax, legal, financial, accounting, employment, benefits, or payroll advice. PayslipIQ is not a CPA firm, law firm, financial advisor, payroll provider, or tax authority. Always verify your paycheck, deductions, withholdings, and tax position with your employer's payroll department, a qualified CPA, the IRS, your state tax authority, or another appropriately qualified professional. Calculations are estimates; your actual paycheck may differ based on factors specific to your employer, location, benefits elections, and personal tax situation.