National Insurance Contributions Calculator

National Insurance Contributions Calculator

Calculate your UK National Insurance Contributions (NICs) for the 2024/25 tax year based on employment income or self-employment profits.

Annual Employment Income (£)

Annual Self-Employment Profit (£)

Include Employer NICs?

Formulas Used (2024/25 Tax Year)

Employee Class 1 NICs:

Employer Class 1 NICs:

Class 2 NICs (Self-Employed):

Class 4 NICs (Self-Employed):

Assumptions & References

Source: GOV.UK – National Insurance rates and categories