yCalculator

Employer NI Cost Calculator

Last updated: April 2026

Employment Cost Inputs

£

Number of employees

1

Minimum is 3% of qualifying earnings. Many employers contribute more.

%

Do you claim the Employment Allowance?

Most employers with an NI bill under £100,000 can claim up to £10,500 per year. This offsets your employer NI bill.

Enter the employer NI already offset against the £10,500 allowance this tax year.

£

Per Employee

Gross salary£30,000
Employer NI (15%)£3,750.00
Pension contribution£712.80
True employment cost£30,712.80
Cost above salary£712.80 (2.38% on top)
True hourly cost£15.75/hr

2.38% above salary

April 2025 employer NI change

From April 2025, employer NI increased from 13.8% to 15% and the secondary threshold dropped from £9,100 to £5,000. For a £30,000 salary, employer NI increased from £2,898 to £3,750, an increase of £852 per employee per year.

What changed with employer NI in April 2025?

From April 2025, the employer National Insurance rate increased from 13.8% to 15%, and the secondary threshold, the salary level above which employer NI is due, dropped from £9,100 to £5,000 per year. The Employment Allowance increased from £5,000 to £10,500 to partially offset the impact for smaller employers.

What is the Employment Allowance?

The Employment Allowance allows eligible employers to reduce their employer NI bill by up to £10,500 per year. Most employers with a previous year NI bill under £100,000 are eligible. It is claimed through your payroll software. The allowance applies to the total NI bill across all employees, not per employee.

What is the true cost of hiring someone at £30,000?

For a £30,000 salary in 2025/26, employer NI is £3,750, which is 15% on the £25,000 above the £5,000 threshold. Adding the minimum 3% pension contribution of approximately £713 on qualifying earnings, the true employment cost before Employment Allowance is approximately £34,463, around 15% above the headline salary figure.

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