The true cost of an employee is not just their salary. UK employers must also pay employer NI — 15% on earnings above the £5,000 secondary threshold from April 2025 — plus a minimum 3% pension contribution under auto-enrolment. This employee cost calculator models those three components for any salary and shows monthly and annual totals. For total workforce cost planning, include per-employee overhead assumptions.
UK scope: England, Scotland, Wales and Northern Ireland employer payroll planning for the 2026/27 tax year.
£43,363
£3,614 per month on £35,000 salary
£4,500
15% above £5,000 secondary threshold (2026/27)
£3,863
Baseline employer pension plus configured overheads
Employer NI
15% above £5,000 secondary threshold for 2026/27.
Auto-enrolment pension
Minimum employer contribution 3% on qualifying earnings.
Employment Allowance
Up to £10,500 relief in 2026/27 for eligible employers.
UK coverage only. Last reviewed: 18 August 2026. Estimates use 2026/27 assumptions and are for planning, not legal or tax advice.
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Written and reviewed by James Whitfield and the editorial team.
Every figure is checked against current HMRC and GOV.UK guidance and reviewed for the 2026/27 tax year. We explain the numbers in plain English with worked examples. Editorial standards · About us