Factsheet: National Insurance
Published
Factsheet: National Insurance
Published
We’ve unpacked the essentials that UK employers need to know about NI in this easy to digest factsheet. This factsheet covers:
- What is employer National Insurance?
- Who pays National Insurance
- Employee and Employer National Insurance Contributions
Disclaimer: The information in this article is current as of 1 November 2025, and has been prepared by Employment Hero Pty Ltd (ABN 11 160 047 709) and its related bodies corporate (Employment Hero). The views expressed in this article are general information only, are provided in good faith to assist employers and their employees, and should not be relied on as professional advice. The Information is based on data supplied by third parties. While such data is believed to be accurate, it has not been independently verified and no warranties are given that it is complete, accurate, up to date or fit for the purpose for which it is required. Employment Hero does not accept responsibility for any inaccuracy in such data and is not liable for any loss or damages arising either directly or indirectly as a result of reliance on, use of or inability to use any information provided in this article. You should undertake your own research and to seek professional advice before making any decisions or relying on the information in this article.
What is employer National Insurance?
National Insurance is a tax on earnings and self-employed profits that is paid by employees, employers and the self-employed. The contributions go into the National Insurance Fund which was established in 1948 to pay for social benefits including unemployment benefit, sickness benefit, and retirement pensions.
There are four main classes of National Insurance:
- Class 1 is paid by employees
- Class 2 is paid if you’re self-employed
- Class 3 is a voluntary contribution
- Class 4 is paid if you’re self-employed and have profits over a certain amount
Using Employment Hero to help with processing employer National Insurance
As an employer, you are responsible for ensuring that your employees are paid correctly and on time. It’s also your responsibility to deduct income tax and NICs from your employees’ wages, as well as pay your employer NICs, and report to and pay HMRC every month.
None of this is easy, especially when payroll tasks are only one of your responsibilities. Whilst it’s possible to run payroll manually, this opens you up to non-compliance risks.
Payroll software can help you process payroll quickly, easily and more accurately. Using HMRC-recognised payroll software like Employment Hero to manage your Real Time Information (RTI) PAYE payments and deductions makes payroll a breeze.
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