This employer NI calculator covers the 2025/26 rules: 15% on employee earnings above the £5,000 secondary threshold. Enter any salary and see annual and monthly NI, with Employment Allowance modelling and a side-by-side 2024/25 comparison. For a full cost view including pension and overheads, use the total employer cost calculator.
UK scope: England, Scotland, Wales and Northern Ireland employer payroll planning for the 2025/26 tax year.
£43,363
£3,614 per month on £35,000 salary
£4,500
15% above £5,000 secondary threshold (2025/26)
£3,863
Baseline employer pension plus configured overheads
Employer NI
15% above £5,000 secondary threshold for 2025/26.
Auto-enrolment pension
Minimum employer contribution 3% on qualifying earnings.
Employment Allowance
Up to £10,500 relief in 2025/26 for eligible employers.
UK coverage only. Last reviewed: 05 April 2026. Estimates use 2025/26 assumptions and are for planning, not legal or tax advice.