Estimate how the January 2024 National Insurance contributions changes will affect you

Use this tool to estimate how the reduction in the main rate of Class 1 National Insurance contributions will affect you.

From 6 January 2024 onwards employees will see their main National Insurance contribution (NICs) rate cut from 12% to 10%.

If you’re self-employed you will also see a reduction in National Insurance contributions payable on your profits from April 2024 (opens in new tab). You will not be able to use this tool to get an estimate of how the Class 4 main rate reduction and changes to Class 2 will affect you.

Before you start

You can use this tool to get an estimate if you’re employed and paid the same amount monthly, by your employer through the PAYE system.

You will not get a useful estimate if you have different working arrangements from 6 January 2023 to 5 January 2025, including if:

  • you’re not liable to pay the main rate of UK Class 1 National Insurance contributions at the standard rate on your earnings — for example:
    • you’re over state pension age
    • you’re self-employed
    • you pay the reduced rate
    • you work outside the UK
  • you have either more than one employer or you’re not paid all of your earnings evenly in a monthly payment (or both) — for example:
    • you get a bonus
    • you’re paid commission
    • you’re paid weekly
  • there is, or will be, a change in your circumstances which affects the amount of UK National Insurance contributions you pay in the period — for example, you get a pay rise or change employers
  • you’re a director

Get an estimate

This tool provides an estimate based on limited information. It may not provide an accurate calculation of your National Insurance contributions liability.

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