Hiring your first employee costs more than the salary figure on the offer letter. In 2026/27, UK employers pay employer NI at 15% on earnings above £5,000, and must make minimum 3% pension contributions once the employee is auto-enrolled. Most first-time employers also qualify for Employment Allowance, which can offset up to £10,500 of employer NI. This page gives the true cost model with worked examples and the allowance calculation included.
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