Paycheck Calculator: Net Pay After Tax
Estimate net take-home pay after federal tax, state tax, Social Security, and Medicare. Supports weekly, biweekly, semi-monthly, and monthly pay periods.
What Is the Paycheck Calculator?
The Paycheck Calculator estimates net take-home pay after federal income tax, state income tax, Social Security, and Medicare. I reach for it whenever I'm comparing job offers paid on different schedules, or sanity-checking a new direct deposit amount before it lands.
Key Features
The calculator covers four payroll schedules — weekly (52 periods), biweekly (26), semi-monthly (24), and monthly (12) — and the annual net pay figure scales correctly for whichever you pick. Federal and state tax rates are user-entered as effective rates (default 22% federal, 5% state, range 0–100%), while FICA taxes apply at their fixed statutory rates: 6.2% for Social Security and 1.45% for Medicare.
Results show every deduction line separately — federal tax, state tax, Social Security, Medicare, optional other deductions — plus total deductions and annualized net pay. There's also an "Other Deductions" field for flat-dollar items like health premiums, parking, or 401(k) contributions.
How to Use the Paycheck Calculator
Type your gross pay (before any deductions) in the "Gross Pay (per period)" field. The placeholder is $2,000, and increments are $100. Then pick your pay period: Weekly, Bi-weekly, Semi-monthly, or Monthly. This determines how many times a year you receive a paycheck, which affects the annual net pay calculation.
Next, enter your Federal Tax Rate (default 22%) and State Tax Rate (default 5%). Use effective rates from your last tax return, not your marginal bracket — they're usually lower. The Other Deductions field (default $0) covers anything not already calculated: health insurance premiums, 401(k), HSA contributions, union dues, and so on.
Click Calculate. Results display Net Pay (highlighted), federal tax (gross × federal rate), state tax (gross × state rate), Social Security (gross × 6.2%), Medicare (gross × 1.45%), other deductions, total deductions, and annual net pay (net × periods per year).
For example: $3,000 gross biweekly, 22% federal, 5% state, $150 other deductions produces Federal $660, State $150, SS $186, Medicare $43.50, Other $150, total deductions $1,189.50, net pay $1,810.50, annual net $47,073.
Practical Examples
Example 1: Mid-Income Salaried Employee
A marketing manager earns $75,000/year, paid biweekly. Gross per period: $75,000 ÷ 26 = $2,884.62.
- Federal tax (22%): $634.62
- State tax (5%): $144.23
- Social Security (6.2%): $178.85
- Medicare (1.45%): $41.83
- Net per paycheck: approximately $1,885
- Annual net: approximately $49,010
This helps the employee verify their direct deposit amount and budget monthly expenses accurately.
Example 2: New Hire Evaluating an Offer
A candidate receives a $55,000 offer paid monthly. Gross per month: $4,583.33.
- Federal (22%): $1,008.33
- State (6%): $275
- SS: $284.17
- Medicare: $66.46
- Net monthly: approximately $2,949
- Annual net: approximately $35,388
Comparing two offers with different pay periods is straightforward: enter each separately and compare annual net pay.
Example 3: Adding 401(k) Contribution
A worker earning $2,500 biweekly contributes $250/period to their 401(k). Enter $250 in "Other Deductions."
- All tax calculations apply to the gross $2,500
- $250 is then additionally deducted
- The result shows the actual cash received after pre-tax retirement contribution
Note: this is a simplified model. Actual 401(k) contributions reduce taxable income, which this tool doesn't model. Use results as estimates.
Tips and Best Practices
- Use effective rates, not marginal brackets: Your effective tax rate is your actual tax paid divided by taxable income. It's usually lower than your marginal bracket. Check last year's tax return for a realistic number.
- Social Security and Medicare are fixed: The 6.2% and 1.45% FICA rates apply automatically. The simplified tool does not adjust for the SS wage base cap.
- Annual net pay depends on pay period: The tool multiplies net pay by 52 (weekly), 26 (biweekly), 24 (semi-monthly), or 12 (monthly). Biweekly and semi-monthly produce slightly different annual figures even with the same gross pay.
- "Other Deductions" is pre-net-pay: It reduces your take-home dollar-for-dollar. Use it for health premiums, parking, or other flat deductions.
- This is an estimate: Actual payroll uses withholding tables, not flat percentage rates. Use results for budgeting and planning, not for precise tax filing.
Common Issues and Troubleshooting
"Enter gross pay" error: The Gross Pay field must have a positive number. Zero and negative values are rejected.
"Rate must be 0–100%" error: Federal or state tax rate is outside the valid percentage range. Common mistake: entering 0.22 instead of 22 (enter as percentage, not decimal).
"Cannot be negative" for Other Deductions: Enter zero or a positive dollar amount. Negative deductions (additions) are not supported.
Annual net pay seems low: Check that your pay period is set correctly. A "Monthly" selection multiplies by 12, producing a lower annual figure than "Biweekly" (×26) for the same gross.
Net pay is higher than expected: Verify your federal and state rates. If you're in a high bracket, 22% federal may be too low. Look at your previous year's effective tax rate on your return.
Privacy and Security
All calculations run in your browser. Gross pay, tax rates, and deduction amounts are never transmitted to any server. Closing the tab clears every value from memory.
Frequently Asked Questions
What pay periods does the calculator support?
Four options: Weekly (52 periods/year), Bi-weekly (26 periods/year), Semi-monthly (24 periods/year), and Monthly (12 periods/year). Pick the one that matches your payroll schedule.
What is Social Security (6.2%) and Medicare (1.45%)?
These are FICA (Federal Insurance Contributions Act) taxes. Both you and your employer pay them. The employee's portion — 6.2% of gross pay for Social Security and 1.45% for Medicare — is calculated and deducted from your gross. The calculator applies these rates without requiring input.
What tax rate should I enter?
Use your effective federal and state income tax rate, not your marginal bracket rate. Find your effective rate on your prior year's return: total tax paid ÷ total taxable income. A 22% effective federal rate is typical for moderate incomes; lower earners may use 10–15%.
Does this account for the Social Security wage base?
No. The Social Security wage base cap (the income level above which SS tax stops) is not modeled. For incomes well above the annual SS wage base, actual SS deductions stop mid-year, so this tool overstates SS for high earners.
How do I account for 401(k) or HSA contributions?
Enter your per-period 401(k) or HSA contribution in the "Other Deductions" field. This subtracts it from gross pay to show take-home, though the tool doesn't model the tax-reduction effect of pre-tax contributions. Use results as an approximation.
What is annual net pay?
Annual net pay is your per-period net pay multiplied by the number of periods in a year (52, 26, 24, or 12). It shows your estimated total take-home pay for the year at the current deduction rates.
How does this differ from the Payroll Tax Calculator?
The Coming Soon: Payroll Tax Calculator focuses on employer and employee FICA taxes specifically, and supports multi-employee payroll estimation. The Paycheck Calculator estimates full take-home pay including income taxes, making it better suited for individual budgeting.
Related Tools
- Coming Soon: Overtime Paycheck Calculator — Compute gross paycheck when your pay includes overtime and double-time hours, then bring that gross figure here for net pay estimation.
- Coming Soon: Payroll Tax Calculator — Estimate FICA payroll taxes for employers managing multiple employees.
Try the Paycheck Calculator now: Coming Soon: Paycheck Calculator