Article — Net to Gross Calculator
Net to gross calculator: reverse paycheck math
Net to gross is the reverse paycheck calculation. Instead of taking a gross salary and subtracting taxes, it starts with the take-home amount and works back to the gross pay needed to produce it. The formula is Gross = Net ÷ (1 − tax rate). At a 25% combined tax rate, a worker who wants $3,000 net per month needs $4,000 gross. The calculator on this page applies the formula with optional FICA on top, so it works for both W-2 employees and self-employed contractors.
The math matters in salary negotiations, freelance pricing, relocation grossing up, and any moment when the target outcome is a specific cash deposit rather than a headline pay rate.
What net to gross means
Most paycheck tools answer one question: given the gross salary, what is the net? Net to gross flips that. The take-home figure is the input, and the calculator returns the gross salary or invoice amount that produces it once taxes are subtracted.
The reversal is useful because pay decisions in real life are usually anchored on the after-tax figure. A candidate wants to know what offer hits a target take-home. A freelancer prices a project at the rate that leaves the desired cash after self-employment tax. An HR team setting a relocation package needs the gross amount that survives withholding to deliver the promised benefit.
The IRS Publication 15 (Circular E) shows employers how to compute taxes on supplemental wages such as bonuses. Grossing up — the net to gross calculation in HR language — is the same arithmetic, just with the company covering the tax so the employee receives the headline amount in full.
The net to gross formula
The basic version uses one rate:
Income tax only Gross = Net ÷ (1 − tax)With FICA Gross = Net ÷ (1 − tax − FICA)SE FICA 15.3% (employee 7.65% × 2)Employer cost Gross × 1.0765The most common error in this calculation is dividing by the tax rate instead of by 1 minus the tax rate. Dividing $3,000 by 25% gives $12,000, which is meaningless. Dividing by (1 − 25%) = 0.75 gives $4,000, which is the gross that yields $3,000 after the 25% tax bite.
Net to gross with FICA included
For U.S. employees, FICA is a separate payroll tax that funds Social Security and Medicare. The employee pays 7.65% (6.2% Social Security up to the annual wage base of $168,600 in 2024, plus 1.45% Medicare on all wages). The employer matches the same 7.65%.
To include FICA in a net to gross calculation, expand the denominator to (1 − income tax rate − FICA rate). For an employee paying a 22% effective income tax rate, the combined deduction is 22% + 7.65% = 29.65%, so $3,000 net needs $3,000 ÷ 0.7035 = $4,265 gross.
Net to gross for freelancers
Self-employed contractors pay both halves of FICA, branded as self-employment tax. The rate is 15.3% on the first $168,600 of net earnings, then 2.9% Medicare above that. The IRS allows the freelancer to deduct the employer-equivalent half (7.65%) when computing taxable income, which softens the blow but does not change the net to gross arithmetic.
A freelancer who wants $5,000 net at a 22% effective income tax rate needs to charge the client enough to cover 22% + 15.3% = 37.3% in combined deductions. The invoice amount is $5,000 ÷ (1 − 0.373) = $7,975. Charging only the round number $5,000 leaves the freelancer with roughly $3,135 after taxes.
Freelancers should also set aside 1.5 to 2 percentage points for state income tax (in tax states) and the employer-side health insurance they now have to self-fund. Add those into the combined rate before computing the invoice gross-up.
Worked net to gross examples
Example 1 — salary offer. A candidate wants a $90,000 take-home after a 24% effective combined tax. Required gross = $90,000 ÷ (1 − 0.24) = $118,421. The recruiter quotes $120,000 to leave a small buffer.
Example 2 — freelancer with SE tax. A consultant wants $8,000 net for a project at a 22% effective income tax rate plus 15.3% SE tax. Invoice = $8,000 ÷ (1 − 0.373) = $12,759. Rounded to $13,000 for a clean number.
Example 3 — HR grossing up a $5,000 bonus. The bonus is taxed at the IRS supplemental rate of 22% federal plus 7.65% FICA — 29.65% combined. Gross = $5,000 ÷ 0.7035 = $7,107. The company writes a $7,107 cheque so the employee nets the promised $5,000.
Grossing up bonuses and relocation
Grossing up is the HR practice of paying the tax on a benefit so the employee receives the headline amount in full. Companies most often gross up relocation reimbursements, signing bonuses, severance payments, and tuition assistance. The IRS classifies these as supplemental wages, and Publication 15 sets the withholding rate at 22% federal for amounts under $1 million per year.
The net to gross math is the same as in any other case. The only twist is that the gross-up itself becomes additional taxable wages, so a true gross-up has to include the tax on the tax. The closed-form solution is still Gross = Net ÷ (1 − rate); the formula already accounts for the recursion because the denominator is less than one.
Plugging the top marginal bracket into the net to gross formula overstates the gross-up by thousands of dollars. The marginal rate applies only to the last dollar earned, while the rest of the income is taxed at lower brackets. Use the effective rate — total tax divided by total income — from last year's return or a paycheck calculator.
Common net to gross mistakes
The first mistake, as noted, is dividing by the tax rate instead of by (1 − rate). The second is leaving FICA out for U.S. workers. Income tax alone underestimates the gross-up by roughly 7.65 percentage points; for self-employed contractors the gap is double that.
A third mistake is forgetting state and local tax. Federal-only gross-ups understate the required gross in any of the 41 U.S. states that levy income tax. New York City and the District of Columbia add a further layer that pushes effective combined rates above 35% for middle-income earners.
A fourth mistake is reusing the same effective rate across very different incomes. A 12% effective rate on $40,000 is not the same as a 12% effective rate on $200,000; tax brackets are progressive, and rates compound. Always recompute the effective rate for the income band in question, especially when grossing up a large bonus that crosses bracket boundaries.
The Social Security Administration raised the wage base from $147,000 in 2022 to $168,600 in 2024, a 14.7% jump in two years tied to national average wage growth. Workers earning above the base see their effective FICA rate fall as income rises, which subtly changes the right combined rate in a net to gross calculation.