Gross Pay to Net Pay Calculation: Step-by-Step 2026
How to calculate net pay from gross pay in 2026: the four taxable wage bases, the exact order deductions come off in, and a full biweekly worked example.
Every explanation of this calculation starts the same way: gross pay minus deductions equals net pay. True, and almost useless, because it makes the whole thing sound like one subtraction.
It isn’t. A single paycheck has four different taxable wage figures on it, and each tax is calculated against a different one. Miss that, and your hand calculation will never match the stub in front of you.
Nobody spells out the part that actually matters. A traditional 401(k) deferral lowers the wages your federal income tax is figured on, but does nothing to your Social Security and Medicare wages. A health insurance premium lowers both. Same paycheck, same “pre-tax” label, two completely different effects.
Gross Pay Minus Deductions Equals Net Pay (and Why That Formula Misleads)
The formula, for the record:
Gross Pay − Total Deductions = Net Pay
The trouble is that “total deductions” isn’t one bucket. It’s three stages applied in a fixed order, and the order changes the answer:
- Gross pay for the period, everything earned.
- Pre-tax deductions come off next, producing the taxable wage bases. Different deductions produce different bases.
- Taxes are withheld against those bases: federal income tax, Social Security, Medicare, state, local.
- Post-tax deductions come off last, after taxes are already calculated.
- What’s left is net pay.
Do step 4 before step 3 and you’ll under-withhold. Apply a 401(k) deferral against the FICA base and you’ll under-withhold there too. The sequence is the calculation.
Step 1: Add Up Gross Pay for the Period
Gross pay is total earnings for the pay period before anything comes out.
For hourly workers: hours worked × hourly rate, plus overtime at 1.5× the regular rate for hours over 40 in a workweek. The hourly earnings calculator handles the multi-rate cases.
For salaried workers: annual salary ÷ number of pay periods. Biweekly is 26 periods, semimonthly 24, weekly 52, monthly 12. Those two middle ones get mixed up constantly, and the difference is real money per check. A pay frequency converter settles it.
Gross pay also includes: overtime, bonuses, commissions, tips, shift differentials, retroactive pay, and paid time off taken during the period.
What is not gross pay, and this is where stubs get built wrong:
- Expense reimbursements and per diem within IRS limits under an accountable plan. The employee gets the money, but it isn’t wages and it isn’t taxed.
- Employer contributions: the employer’s 401(k) match, employer-paid health premiums, the employer half of FICA. These belong on the stub as information, but they never touch gross pay and they never touch net pay.
That second one causes real confusion. An employee sees a $150 employer premium contribution printed on the stub and wonders why their net didn’t drop. It didn’t drop because that money was never theirs to begin with.
Step 2: Subtract Pre-Tax Deductions (and Know Which Taxes They Actually Reduce)
This is the step that separates a correct calculation from a close one.
Pre-tax deductions come out of gross pay before taxes are figured. But they don’t all reduce the same taxes. The dividing line is whether the benefit runs through a Section 125 cafeteria plan (exempt from income tax and FICA) or is a retirement deferral (exempt from income tax only).
| Pre-tax item | Reduces federal income tax wages | Reduces Social Security & Medicare wages |
|---|---|---|
| Health, dental, vision premiums (Section 125) | Yes | Yes |
| Health FSA, dependent-care FSA | Yes | Yes |
| HSA contributions through a Section 125 plan | Yes | Yes |
| Traditional 401(k), 403(b), 457 deferrals | Yes | No |
| Roth 401(k) | No (it’s post-tax) | No |
You will find articles claiming FICA is calculated on your full gross salary regardless of pre-tax deductions. That’s wrong for the Section 125 rows above, and IRS Publication 15-B is the authority that says so. If your Social Security withholding equals 6.2% of gross while you’re paying health premiums pre-tax, something is misclassified.
The 2026 limits worth knowing:
- 401(k), 403(b), 457 elective deferral: $24,500. Catch-up at 50+ is $8,000; ages 60 to 63 get $11,250.
- HSA: $4,400 individual, $8,750 family, plus $1,000 catch-up at 55 and older.
- Health FSA: $3,400, with up to $680 carryover.
Catch-up contributions changed for 2026. If the employee earned more than $150,000 in the prior year, the catch-up must now go in on an after-tax Roth basis, which means it stops reducing taxable wages entirely for exactly the people who were using it to do that.
Step 3: Withhold Taxes
Now the taxes, each against its own base.
Federal income tax is driven by the employee’s Form W-4 and calculated using IRS Publication 15-T, either the percentage method or the wage bracket method. It is graduated, not flat: the method effectively annualizes taxable wages, applies the standard deduction and the brackets, then divides back down to the period. The 2026 edition of Pub 15-T was updated for the One Big Beautiful Bill Act.
The 2026 standard deduction is $16,100 for single filers, $32,200 married filing jointly, $24,150 head of household, $16,100 married filing separately. Single brackets run 10% to $12,400, 12% to $50,400, 22% to $105,700, 24% to $201,775, 32% to $256,225, 35% to $640,600, and 37% above that.
Social Security is 6.2% of Social Security wages, up to the 2026 wage base of $184,500. Watch for stale numbers here: $176,100 was the 2025 figure and it’s still circulating on pages labeled 2026. Once year-to-date Social Security wages cross the base, the line stops for the rest of the year.
Medicare is 1.45% with no cap. An Additional Medicare Tax of 0.9% applies to wages above $200,000 for single and head of household filers, $250,000 married filing jointly, $125,000 married filing separately. Employers must begin withholding it once an employee’s wages pass $200,000 in the year, regardless of what the employee’s actual filing status is.
Combined employee FICA is 7.65% below the wage base. The FICA tax calculator runs both halves.
Supplemental wages (bonuses, commissions, severance) can be withheld at a flat 22% up to $1,000,000 cumulative for the year, and 37% on anything above that.
State and local taxes vary. Most states start from the federal taxable wage figure, some define their own base, and nine states levy no tax on wage income at all. Add state disability, paid family leave, and local wage taxes where they apply. Our state-by-state pay stub requirements covers what has to appear on the statement.
Step 4: Subtract Post-Tax Deductions to Reach Net Pay
Post-tax deductions come out after all the taxes are calculated. They reduce what lands in the bank account and nothing else.
Common ones: Roth 401(k) contributions, union dues, wage garnishments, child support, employee loan repayments, after-tax insurance premiums, charitable payroll giving.
Garnishments deserve their own note, because they’re capped by law and the cap isn’t based on gross pay. It’s based on disposable earnings: pay remaining after legally required deductions (federal, state and local income tax, the employee’s FICA share, mandatory state retirement). Voluntary items like your 401(k) and your health premium do not reduce disposable earnings.
Under the Consumer Credit Protection Act, ordinary garnishment is limited to the lesser of 25% of disposable earnings, or the amount by which weekly disposable earnings exceed 30 times the federal minimum wage. Child support orders can reach 50% to 65% depending on circumstances.
There is an asymmetry in the rules here. Under the FLSA, deductions taken for the employer’s benefit (uniforms, tools, cash register shortages) may not push an employee below minimum wage. Court-ordered garnishments can.
A Full Worked Example: Biweekly, $2,500 Gross
One employee, all the way through. Single filer, paid biweekly, with a $150 Section 125 health premium, a $125 traditional 401(k) deferral, a $50 Roth 401(k) contribution, and an illustrative flat 4% state income tax.
| Line | Amount |
|---|---|
| Gross pay | $2,500.00 |
| Less pre-tax health premium (Section 125) | −$150.00 |
| Less traditional 401(k) | −$125.00 |
| Federal taxable wages | $2,225.00 |
| Social Security / Medicare wages (health premium only) | $2,350.00 |
| Federal income tax (annualized estimate) | −$183.15 |
| Social Security (6.2% × $2,350.00) | −$145.70 |
| Medicare (1.45% × $2,350.00) | −$34.08 |
| State income tax (4% × $2,225.00, illustrative) | −$89.00 |
| Roth 401(k) (post-tax) | −$50.00 |
| Net pay | $1,723.07 |
Look at the two bolded bases. The federal tax base is $2,225 and the FICA base is $2,350, a $125 gap that is exactly the 401(k) deferral. That gap is the whole point of this article.
The federal figure comes out like this: $2,225 × 26 pay periods = $57,850 annualized. Subtract the $16,100 single standard deduction for 2026 and you get $41,750 of taxable income. Tax it: 10% of the first $12,400 is $1,240, and 12% of the remaining $29,350 is $3,522, for $4,762. Divide by 26 and you get $183.15 per period.
Treat that as an approximation. It illustrates the annualized logic Publication 15-T uses, but a real employer runs the Worksheet 1A or 1B percentage method tables against the employee’s actual W-4, including any dependent credits or extra withholding, and the result will differ by a few dollars.
Take-home here is $1,723.07 on $2,500 gross, or 68.9%, which makes a useful sanity anchor: most US paychecks land somewhere between 65% and 80% of gross.
Running it the other direction, from a target net back to the gross required, is a gross-up calculation, which is what you need when you promise someone a $1,000 bonus and mean $1,000 in their hand.
Three Tests to Check a Stub
If you’re verifying a stub rather than building one, these three checks catch most errors.
Test 1: Gross minus total deductions must equal net exactly. A penny off means either a missing line or floating-point rounding somewhere in the software that produced the stub, and both are worth chasing down.
Test 2: Social Security should be exactly 6.2% of the Social Security wages figure, not of gross. Divide the Social Security line by 0.062 and see what wage figure falls out. If it equals gross while you have pre-tax health premiums, a Section 125 item is classified wrong. If it’s lower than expected, check whether a 401(k) deferral was incorrectly excluded from the FICA base.
Test 3: Year-to-date figures should track toward the right W-2 boxes. YTD gross minus YTD pre-tax deductions heads toward Box 1. YTD Social Security wages head toward Box 3. Those two numbers being different on a W-2 is normal and expected, and the difference is usually your retirement deferrals. Our guide to what YTD means on a pay stub goes deeper, and the YTD earnings calculator does the running totals. If something fails these tests, common pay stub errors lists the usual suspects.
Once you have the numbers, they have to land on a document. Payslip44 organizes deductions into the same three buckets this calculation uses (Tax, Pre-tax, After-tax), keeps employer contributions in their own section where they can’t distort net pay, and computes Gross, Total Deductions, and Net with decimal arithmetic so the three reconcile to the cent. It builds and exports the stub; it doesn’t compute your withholding. You supply the withheld amounts from payroll or from the calculators above, and it renders the itemized statement.
The short version
Four bases, one order. Gross, then federal taxable wages, then FICA wages, then state wages, then taxes, then post-tax deductions, then net.
The distinction that trips everyone up is the middle one: Section 125 benefits shrink both tax bases, retirement deferrals shrink only the income tax base. Get that right and your arithmetic will match the stub. Get it wrong and you’ll spend an afternoon hunting a discrepancy that was never a mistake, just a base you weren’t tracking.
If you’re the one producing the stubs, Payslip44 runs entirely on-device with reusable employer, employee, and item templates, so the deduction lines you set up once carry forward every pay period.
Frequently Asked Questions
What is the formula to calculate net pay from gross pay?
Gross pay minus pre-tax deductions, minus federal, FICA, state and local taxes, minus post-tax deductions. Order matters: pre-tax first, taxes second, post-tax last.
Do pre-tax deductions reduce Social Security and Medicare taxes?
Only some. Section 125 items (health premiums, FSA, HSA through the plan) reduce both income tax and FICA wages. Traditional 401(k) deferrals reduce income tax wages but not Social Security or Medicare wages.
What percentage of gross pay is net pay?
There is no fixed percentage. For most US workers it lands between roughly 65% and 80% of gross, depending on income, filing status, state, and benefit elections.
How much is withheld for FICA in 2026?
6.2% for Social Security on wages up to $184,500, plus 1.45% for Medicare with no cap, so 7.65% combined. An extra 0.9% Medicare applies above $200,000 in wages.
Why doesn't my gross pay minus my tax rate equal my net pay?
Because federal withholding is graduated and based on annualized taxable wages after pre-tax deductions, not a flat percentage of gross, and Social Security stops at the wage base.
Is net pay the same as take-home pay?
Yes. Net pay, take-home pay, and net earnings on a stub all mean the amount actually deposited or paid after every deduction.
How do I calculate gross pay if I only know the net amount?
That's a gross-up: you solve backwards for the gross figure that leaves the target net after taxes. Bonuses grossed up to a promised amount typically use the 22% supplemental rate plus FICA.
How much of my paycheck can be garnished?
Under the CCPA, generally the lesser of 25% of disposable earnings or the amount by which weekly disposable earnings exceed 30 times the federal minimum wage. Child support orders can reach 50% to 65%.