How Much Tax and N I Pay Calculator

Use this tax and National Insurance calculator to estimate how much tax and NI you'll pay in the UK. The calculator accounts for income tax rates, personal allowance, tax bands, and National Insurance contributions for employees and self-employed individuals.

How the Calculator Works

The tax and National Insurance calculator uses the current UK tax rules to estimate your tax and NI liability. Here's how it works:

Enter your annual income before tax and deductions.
Select your employment status (employee or self-employed).
Choose your tax year (2023/24 or 2024/25).
Click "Calculate" to see your estimated tax and NI payments.

This calculator provides estimates only. Actual tax and NI payments may vary based on your specific circumstances and deductions.

UK Tax Rates

Income tax in the UK is progressive, meaning higher income earners pay higher rates. The current tax bands for 2023/24 are:

Tax Band	Tax Rate	Personal Allowance
Personal Allowance	0%	£12,570
Basic Rate	20%	£12,571 - £50,270
Higher Rate	40%	£50,271 - £125,140
Additional Rate	45%	Over £125,140

The personal allowance reduces by £1 for every £2 your income exceeds £100,000.

National Insurance Rates

National Insurance contributions are paid by employees and some self-employed individuals. The rates for 2023/24 are:

NI Band	Employee Rate	Self-Employed Rate
Lower Earnings Limit	£12,570	£12,570
Primary Threshold	£12,571 - £50,270	£12,571 - £12,569
Upper Earnings Limit	£50,271 - £250,000	£12,570 - £50,270
Class 1	12%	9%
Class 2	2%	2%
Class 4	9%	9%

Self-employed individuals pay Class 2 and Class 4 contributions on profits above £12,569.

Worked Example

Let's calculate the tax and NI for an employee earning £40,000 in the 2023/24 tax year.

Personal allowance: £12,570 (tax-free)
Taxable income: £40,000 - £12,570 = £27,430
Basic rate tax: £27,430 × 20% = £5,486
NI contributions:
- Class 1: (£40,000 - £12,570) × 12% = £3,134
- Class 2: (£40,000 - £12,570) × 2% = £626
- Total NI: £3,134 + £626 = £3,760
Total tax and NI: £5,486 + £3,760 = £9,246

Formula: Tax = (Income - Allowance) × Rate
NI = (Income - Lower Earnings Limit) × Rate

Frequently Asked Questions

How often should I use this calculator?

You can use this calculator whenever you need to estimate your tax and NI payments, especially when reviewing your budget or considering changes to your income.

Does this calculator account for deductions?

This calculator provides estimates based on gross income. For precise calculations, consult a tax professional or use official HMRC tools.

Are the tax rates up to date?

The calculator uses the current tax rates for 2023/24. For future years, check the official HMRC website or consult a tax advisor.

Can I use this for self-employed income?

Yes, select "Self-employed" in the calculator to estimate tax and NI for self-employed individuals.