EmployerCalculator uses deterministic formulae for 2026/27 employer NI, pension minimums and total employer cost modelling. Each result is rendered server-side and included directly in HTML for SEO.
Employer NI assumptions: 15% rate above £5,000 secondary threshold, with support for Employment Allowance up to £10,500 and relief handling for under-21 and apprentice under-25 scenarios up to the upper secondary threshold.
Pension assumptions: employer minimum 3% and total minimum 8% on qualifying earnings band £6,240 to £50,270. Programmatic pages default to minimum employer contribution unless stated.
Update schedule: rates and thresholds are reviewed each tax-year cycle and whenever HMRC issues in-year updates. Pages display tax year explicitly.
Disclaimer: estimates only and not financial or legal advice.
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