Confidential Payroll Tax Calculator — Browser-Only, No Data Stored
Calculate payroll taxes, deductions, and net pay for US and UK employees. See federal income tax, Social Security, Medicare, or UK income tax and National Insurance — all computed privately in your browser.
How Payroll Taxes Are Calculated
Payroll taxes fund government programs like Social Security, Medicare (US), or the National Health Service and state pension (UK). They are split between employee and employer, with each paying a portion. This calculator shows both the employee deductions (what comes out of your paycheck) and the total employer cost.
US Payroll Tax Rates (2024)
- Federal Income Tax: Progressive brackets from 10% to 37%
- Social Security (Employee): 6.2% up to $168,600
- Medicare (Employee): 1.45% on all wages
- Social Security (Employer): 6.2% up to $168,600
- Medicare (Employer): 1.45% on all wages
UK Tax Rates (2024/25)
- Personal Allowance: £12,570 (tax-free)
- Basic Rate: 20% on £12,571–£50,270
- Higher Rate: 40% on £50,271–£125,140
- Additional Rate: 45% above £125,140
- Employee NI: 8% on £12,570–£50,270, 2% above
- Employer NI: 13.8% above £9,100
Understanding Your Pay Stub
Your gross salary is your total compensation before deductions. After subtracting federal/income tax, Social Security/NI, Medicare, and any state taxes, you arrive at your net pay — the amount deposited in your bank account. The employer also pays additional taxes on top of your gross salary.
Privacy Guarantee
All salary calculations are performed entirely in your browser. Your compensation data is never sent to any server, stored in any database, or tracked in any way. Close this page and all data disappears.