Employer NI Calculator

2025/26 rates — 15% above the £5,000 secondary threshold, plus the £10,500 Employment Allowance.

Net annual employer NI
£12,000
After Employment Allowance
Per employee
£4,500
(£35,000 − £5,000) × 15%
Gross NI (before allowance)
£22,500
Allowance used
£10,500
Max £10,500

2025/26 rules

From April 2025 the secondary (employer) threshold dropped from £9,100 to £5,000 and the rate rose from 13.8% to 15%. The Employment Allowance increased to £10,500 and the £100,000 NI-bill cap was removed, so most SMEs can now claim regardless of size — but groups of companies still only get one allowance between them.

From the SMB Blog

Related reading on smallmediumbusiness.co.uk

Independent UK editorial covering the costs, risks and trends behind this tool.

Read more on smallmediumbusiness.co.uk