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

Use this tool to estimate how the April 2024 reduction in the main rate of Class 1 National Insurance contributions will affect you.

From 6 April 2024 onwards employees will see their main National Insurance contributions (NICs) rate cut from 10% to 8%.

This is in addition to the change made from 6 January 2024, when NICs were 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, due to changes announced at Autumn Statement 2023 and Spring Budget 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 get an estimate if you’re employed and paid the same amount monthly, by your employer through the PAYE system. PAYE is HMRC’s system to collect Income Tax and National Insurance contributions, and means the contributions are taken from your salary before you get paid.

This tool provides an estimate of your monthly reduction in NICs, and the equivalent over 12 months. The estimates assume that your working arrangements are the same between December 2023 and April 2024. They may not be accurate if your working arrangements do change, or if you have different arrangements, for example 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

You’ll get an estimate based on limited information. It may not provide an accurate calculation of your National Insurance contributions liability.

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