Paycheck Deductions Estimator

This paycheck deductions estimator gives US employees a quick 2026 estimate of how much federal income tax, Social Security, Medicare, 401(k) and state tax come off each paycheck. It applies the IRS 2026 tax brackets and standard deduction to your annualised pay, so you can sanity check a job offer or a raise before your first payslip arrives.

Quick answer: A paycheck deductions estimator subtracts pre-tax 401(k) and benefits, federal and state income tax, Social Security and Medicare from gross pay. For a single filer saving 6% in a 401(k) with a 4% flat state tax, about $633 comes out of a $2,500 biweekly paycheck, leaving $1,866.60.

What Are Paycheck Deductions?

Paycheck deductions are the amounts your employer withholds from gross pay before paying you, mainly income taxes, FICA payroll taxes and any retirement or benefit contributions you choose. In plain words: take home pay = gross pay minus pre-tax 401(k) and benefits, minus federal and state income tax, minus Social Security and Medicare.

Traditional 401(k) deferrals reduce income tax but not FICA, while Section 125 benefits such as health premiums reduce both. Federal tax is progressive, so for a single filer in 2026 the first $12,400 of taxable income is taxed at 10%, the next slice up to $50,400 at 12% and income up to $105,700 at 22%.

How to Use the Paycheck Deductions Estimator

Step 1: Enter Gross Pay and Frequency

Type your pay before deductions for one paycheck and choose how often you are paid. Biweekly means 26 paychecks a year and semimonthly means 24, which changes the size of each one.

Step 2: Choose Your Filing Status

Single, married filing jointly and head of household each have their own standard deduction and brackets. Married filers whose spouse also works should treat the result as a rough guide, because the brackets assume one combined household income.

Step 3: Add 401(k), Benefits and State Tax

Enter your 401(k) percentage and any pre-tax benefit premiums. State rules vary widely, so the state box takes a flat percentage you can edit, and 0% suits states with no wage tax. For pay worked out from hours, the time card calculator totals a week of shifts before you enter the gross figure.

Step 4: Read Your Estimated Take Home Pay

The table shows each deduction per paycheck and per year. If you are paid by the hour, the hourly to annual salary converter turns your rate into a yearly figure you can compare with the total here.

How Much Is Taken Out of a $2,500 Paycheck?

About $633 is taken out of a $2,500 biweekly paycheck for a single filer saving 6% in a 401(k) in a state with a 4% flat tax, leaving $1,866.60. Marcus earns $65,000 a year. His 401(k) takes $150.00, federal income tax $198.15, Social Security $155.00, Medicare $36.25 and state tax $94.00 per paycheck.

2026 payroll item	Employee rate	Limit
Social Security	6.2%	Wages up to $184,500
Medicare	1.45%	No limit
Additional Medicare	0.9%	Withheld on wages over $200,000
401(k) deferral	Your choice	$24,500 (under 50)
Standard deduction	Not a rate	$16,100 single, $32,200 joint

High earners see the Social Security line stop part way through the year, because the cap is set by the SSA contribution and benefit base for 2026. Your actual withholding depends on your W-4 and may differ from this estimate.

Key Paycheck Deductions Terms Explained

These payroll terms explain each line the paycheck deductions estimator shows, helping US workers understand their withholding and plan around changes to pay or benefits.

FICA

The Federal Insurance Contributions Act payroll taxes, made up of Social Security and Medicare, which employers withhold from wages and match with their own share. Unlike income tax, they are not reduced by traditional 401(k) deferrals.

Social Security wage base

The annual earnings limit above which no further Social Security tax is withheld. Once a worker's year to date pay passes it, that deduction stops for the rest of the calendar year, so take-home pay rises.

401(k) plan

An employer sponsored US retirement savings plan funded through payroll deductions. Traditional contributions are taken before income tax, lowering taxable wages now, while tax is paid when the money is withdrawn in retirement.

Standard deduction

A fixed amount, set by filing status, that is subtracted from income before federal income tax brackets are applied. Most taxpayers use it instead of itemizing individual expenses because it is larger or simpler.

Section 125 plan

A cafeteria plan that lets employees pay for certain benefits, such as health insurance premiums, from pre-tax pay. These deductions reduce both federal income tax and FICA, which makes them more valuable than 401(k) deferrals per dollar.

Form W-4

The IRS form an employee gives an employer to set federal income tax withholding, recording filing status, extra jobs, dependents and any additional amount to withhold. Actual withholding can therefore differ from an estimate based on brackets alone.

Frequently Asked Questions