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National Insurance Calculator UK 2025/26

Last verified: • Updated for 2026/26 tax year

Calculate your NI contributions as employee, self-employed, or employer

Calculate Your National Insurance

Your taxable profit after expenses

Your National Insurance for 2025/26

Total NI
£1,794
Per year
At 8% Rate
£1,794
£12,570-£50,270
At 2% Rate
£0
Above £50,270
Effective Rate
5.1%
Of total earnings
Earnings Band Rate Earnings in Band NI Due

National Insurance Rates 2025/26

Class 1 (Employees)

£0 - £12,570 0%
£12,570 - £50,270 8%
Above £50,270 2%

Class 4 (Self-Employed)

£0 - £12,570 0%
£12,570 - £50,270 6%
Above £50,270 2%

Employer NI

£0 - £9,100 0%
Above £9,100 13.8%
Employment Allowance Up to £5,000

Flat Rate Classes

Class 2 (self-employed) £3.45/week
Class 3 (voluntary) £17.45/week

What NI Pays For

  • State Pension entitlement
  • Contribution-based JSA
  • Maternity Allowance
  • Statutory Sick Pay entitlement
  • Bereavement benefits

Key Thresholds 2025/26

  • Primary Threshold: £12,570/year
  • Upper Earnings Limit: £50,270/year
  • Secondary Threshold: £9,100/year
  • Lower Earnings Limit: £6,396/year
  • Small Profits Threshold: £6,725/year

Understanding National Insurance Classes

Class Who Pays Rate (2025/26) What It Covers
Class 1 Employees 8% / 2% State Pension, JSA, MA, SSP
Class 1 (Employer) Employers 13.8% NHS funding, social security
Class 2 Self-employed £3.45/week State Pension, MA, BSP
Class 3 Voluntary £17.45/week Fill gaps for State Pension
Class 4 Self-employed 6% / 2% No benefits - just tax

NI and Your State Pension

Your State Pension depends on your National Insurance record:

You can check your NI record and State Pension forecast on the GOV.UK website.

When You Don't Pay NI

Frequently Asked Questions

What is the National Insurance rate for 2025/26?
For 2025/26, employee Class 1 NI is 8% on earnings between £12,570 and £50,270, then 2% above £50,270. Self-employed Class 4 NI is 6% on profits between £12,570 and £50,270, then 2% above. Employer NI is 13.8% on earnings above £9,100. Class 2 NI for self-employed is £3.45/week.
How much National Insurance do I pay?
The amount depends on your earnings and employment status. Employees pay Class 1 NI: 8% on earnings between £12,570-£50,270 per year, and 2% on earnings above £50,270. For example, on a £35,000 salary, you'd pay approximately £1,794 in NI per year (£149.50/month).
What are the different NI classes?
Class 1: Paid by employees and employers on wages. Class 1A/1B: Paid by employers on benefits and expenses. Class 2: Flat rate for self-employed (£3.45/week). Class 3: Voluntary contributions to fill gaps (£17.45/week). Class 4: Paid by self-employed on profits (6% then 2%).
What is the NI threshold 2025/26?
For 2025/26, the Primary Threshold (when employees start paying NI) is £12,570 per year (£242/week). The Upper Earnings Limit (when the rate drops to 2%) is £50,270 per year. The Secondary Threshold for employers is £9,100 per year.
Do I pay National Insurance after State Pension age?
No, employees don't pay National Insurance once they reach State Pension age (currently 66). However, if you're self-employed, you stop paying Class 2 and Class 4 NI from State Pension age. Your employer still pays their share of NI on your earnings.
How does NI affect my State Pension?
You need 35 qualifying years of NI contributions for a full State Pension (£221.20/week in 2025/26). You need at least 10 qualifying years to get any State Pension. If you have gaps, you can pay voluntary Class 3 contributions (£17.45/week) to fill them.
Pro Tips for Accurate Results
  • Double-check your input values before calculating
  • Use the correct unit format (metric or imperial)
  • For complex calculations, break them into smaller steps
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Understanding Your Results

Our National Insurance Calculator provides:

  • Instant calculations - Results appear immediately
  • Accurate formulas - Based on official UK standards
  • Clear explanations - Understand how results are derived
  • 2025/26 updated - Using current rates and regulations
Common Questions

Is this calculator free?

Yes, all our calculators are 100% free to use with no registration required.

Are the results accurate?

Our calculators use verified formulas and are regularly updated for accuracy.

Can I use this on mobile?

Yes, all calculators are fully responsive and work on any device.

People Also Ask

Yes, our calculators use verified formulas and are regularly updated with current UK rates and regulations. Results are provided for guidance - always consult professionals for major financial decisions.

Absolutely! All our calculators are fully responsive and work perfectly on smartphones, tablets, and desktops. No app download needed.

We update all calculators with new rates as soon as they're announced - typically at the start of each tax year (April) or when significant changes occur.

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