HM Revenue PAYE Calculator (UK)
Estimate Income Tax, National Insurance, pension impact, and take-home pay under PAYE.
What this HM Revenue PAYE calculator helps you do
This calculator gives you a quick estimate of your UK take-home pay under the Pay As You Earn (PAYE) system. It is designed for employees who want to understand where their money goes before payday and how adjustments—like pension contributions or tax code changes—can affect net income.
You can use it to estimate:
- Income Tax based on common PAYE tax code scenarios
- Employee National Insurance contributions
- Student loan deductions
- Pension contribution impact on your take-home pay
- Annual and per-pay-period net pay
How to use the calculator
1) Add your gross pay and frequency
Enter the amount you are paid before deductions and choose whether that figure is monthly, annual, or weekly. The calculator converts this into an annual figure in order to estimate annual PAYE deductions.
2) Add bonus and tax code
If you receive a bonus, add the expected annual amount. Then enter your tax code (for example, 1257L). Basic special codes like BR, D0, D1, and NT are supported too.
3) Set pension and student loan details
Choose your pension percentage and student loan plan if applicable. The calculator then provides a deduction summary and estimated net pay.
PAYE deduction breakdown explained
Income Tax
For standard tax codes, the calculator estimates Personal Allowance and applies common England/Wales/NI income tax bands. It also includes a simple tapering effect for very high incomes where Personal Allowance may be reduced.
National Insurance (employee)
National Insurance (NI) is estimated using common employee Class 1 thresholds and rates. NI usually applies only above a threshold, and the rate can reduce above the upper earnings limit.
Student loans
If you select a plan, deductions are estimated only on earnings above that plan’s annual threshold. Plan rates and thresholds may change each tax year, so treat this as an estimate.
Pension contribution
The calculator assumes your pension is a percentage of gross earnings. This can reduce taxable and NI-able pay in salary sacrifice-style scenarios, which usually increases your take-home pay compared to post-tax contributions.
Tax code quick guide
- 1257L: Standard code for many people
- BR: All income taxed at basic rate
- D0: All income taxed at higher rate
- D1: All income taxed at additional rate
- NT: No tax deducted
- K codes: Negative allowance scenario, often for untaxed income recovery
Important notes and limitations
This tool is for planning and education. It does not replace official HMRC calculations, payroll software, or professional tax advice. Your actual payslip can differ because of factors such as:
- Cumulative vs non-cumulative tax treatment
- Benefits in kind and company perks
- Scottish income tax rates (not separately modeled here)
- Irregular pay periods and payroll timing
- Specific employer pension arrangement rules
When to use this calculator
Use this HM Revenue PAYE calculator when comparing job offers, checking if your tax code looks right, planning salary sacrifice, or building a monthly budget. A few minutes of estimation can save plenty of surprises on payday.