Employer National Insurance Contributions (Employer NI) are a tax paid by businesses on the wages they pay to their employees. Unlike employee NI, which is deducted from an employee's gross pay, Employer NI is an additional cost paid on top of the wage by the company. It does not reduce the employee's take-home pay directly, but it significantly affects the total cost of employment — which is why salary negotiation and budget planning should always include Employer NI in the true cost calculation.
From April 2025, following the changes announced in the October 2024 Budget, Employer NI rose from 13.8% to 15%, and the Secondary Threshold (the earnings point above which Employer NI applies) dropped from £9,100 to £5,000 per year. This means a worker on £30,000 now costs their employer approximately £3,750/year in NI contributions — up from £2,884 the year before. Use this calculator to calculate the true cost to the business of any salary, including Employer NI and the Apprenticeship Levy.