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Paycheck Calculator

What Is a Paycheck Calculator?

A paycheck calculator estimates your take-home pay — the amount deposited into your bank account after all taxes and deductions are withheld from your gross pay. Your employer withholds federal income tax, state income tax (in most states), Social Security tax (6.2%), and Medicare tax (1.45%) from every paycheck. Additionally, voluntary pre-tax deductions like 401(k) contributions, health insurance premiums, and HSA contributions reduce your taxable income and are subtracted before taxes are calculated. Understanding your net pay helps you budget accurately, compare job offers, and optimize your tax withholding strategy.

How Paycheck Taxes Are Calculated

Federal income tax uses progressive brackets where different portions of your income are taxed at increasing rates. For 2025, a single filer pays 10% on income up to $11,925, then 12% up to $48,475, 22% up to $103,350, 24% up to $197,300, and higher rates above that. Your taxable income is your gross pay minus pre-tax deductions and the standard deduction ($15,000 for single, $30,000 for married filing jointly in 2025). Social Security tax is a flat 6.2% on income up to $176,100. Medicare is 1.45% on all income, plus an additional 0.9% on income over $200,000 (single) or $250,000 (married). State taxes vary widely from 0% to over 13% depending on the state.

Frequently Asked Questions

Why is my first paycheck smaller than expected?

Several factors can make your first paycheck smaller: tax withholding may be calculated at a higher annualized rate, you may have started mid-pay-period and received partial pay, initial health insurance premiums may be double-deducted to cover retroactive coverage, and some employers have a one-period lag in pay. Check your pay stub for a detailed breakdown and ensure your W-4 allowances are set correctly.

How much of my paycheck goes to taxes?

For most Americans, total tax withholding ranges from 20-35% of gross pay. This includes federal income tax (10-37% marginal, but typically 10-18% effective), Social Security (6.2% up to $176,100), Medicare (1.45-2.35%), and state income tax (0-13.3%). A single person earning $60,000 typically takes home about 75-80% of gross pay after all taxes.

What states have no income tax?

Nine US states have no state income tax: Alaska, Florida, Nevada, New Hampshire (only taxes interest/dividends), South Dakota, Tennessee, Texas, Washington, and Wyoming. Living in these states means your paycheck is only subject to federal tax and FICA, resulting in significantly higher take-home pay compared to high-tax states like California (up to 13.3%) or New York (up to 10.9%).

Should I increase my 401(k) contribution?

Generally yes, especially if your employer offers matching — not contributing enough to get the full match is leaving free money on the table. Every dollar contributed pre-tax reduces your current tax bill by your marginal rate. For someone in the 22% bracket, a $100 401(k) contribution only reduces take-home pay by about $78. The 2025 contribution limit is $23,500, or $31,000 if you are 50 or older.

How does overtime affect my taxes?

Overtime pay is taxed as regular income — there is no special overtime tax rate. However, if your overtime pushes your total income into a higher tax bracket, that additional income is taxed at the higher rate. For example, moving from the 22% to 24% bracket means only the income above the threshold is taxed at 24%. Your employer may temporarily over-withhold on overtime paychecks because payroll systems annualize each paycheck to estimate your bracket.

What is the difference between gross pay and net pay?

Gross pay is your total earnings before any deductions — your salary divided by pay periods, or hours × rate for hourly workers. Net pay (take-home pay) is what you actually receive after all deductions: federal tax, state tax, Social Security, Medicare, and voluntary deductions like 401(k), health insurance, and HSA contributions. Your net pay is typically 65-80% of gross pay depending on your tax situation and deduction choices.