About
About EmployerCalculator.co.uk
EmployerCalculator.co.uk is focused on one job: making UK employer cost calculations clear and practical for small businesses, HR teams and hiring managers. The site combines a free employer cost calculator with guides on employer NI, auto-enrolment pension, Employment Allowance, and redundancy — so employers can budget accurately before making hiring decisions.
What this site is for
Use the employer cost calculator to estimate the true annual cost of employing someone — salary, employer National Insurance at 15%, auto-enrolment pension contributions, and optional overhead assumptions. Compare salary scenarios and understand how the April 2025 NI changes affect your specific payroll.
The cost-of-employing pages and employer NI tables answer specific salary-level questions quickly — for example, "what does a £40,000 salary cost an employer?" or "how much employer NI is due on £35,000?". For formal payroll, tax or legal advice, consult a qualified professional.
What we cover
- Employer National Insurance — rates, thresholds, and the April 2025 changes explained with worked examples.
- Auto-enrolment pension costs — qualifying earnings, minimum contributions, and per-employee cost modelling.
- Employment Allowance — eligibility, claiming process, and how it affects small employer NI bills.
- Total cost of employment — salary-by-salary breakdowns combining NI, pension and optional overhead costs.
- Payroll and HR tools — editorial comparisons of payroll software commonly used by UK small businesses.
- Redundancy, notice period and statutory pay — calculators and guides for employer obligations.
Editorial approach
Every guide is written in plain British English and reviewed against current HMRC and GOV.UK guidance for the active tax year. We prioritise practical accuracy, transparent assumptions and pages that are genuinely useful for payroll planning — not pages that restate definitions without helping a user take action.
Where a page involves estimates or assumptions, those are explained and linked to the methodology page. Our editorial standards cover how we write, review and update content — including our approach to commercial relationships.
How the site is maintained
- Calculator assumptions are updated when HMRC confirms tax-year rates and thresholds.
- Guides are reviewed for accuracy and internal-link quality at each tax-year change.
- Pages are updated when users or readers report confusing assumptions, unclear wording, or outdated figures.
- We do not publish pages without practical value for a UK employer audience.
Editorial team and contact
Content is produced and maintained by EmployerCalculator Editorial, a small team focused on UK employer cost calculations, payroll planning, and employment regulation. All figures are checked against HMRC and GOV.UK guidance.
For corrections, data-quality feedback or editorial queries, contact: mskippergriffiths@gmail.com.
Last reviewed: March 2026. Tax year: 2026/27.