- A £30,000 salary costs employers approximately £34,464/year in statutory costs (salary + NI + pension).
- A £35,000 salary costs approximately £40,363/year. A £50,000 salary costs approximately £57,911/year.
- Employer NI is 15% on earnings above £5,000. Employer pension minimum is 3% on qualifying earnings.
- Total on-costs are typically 15–20% above gross salary.
- Employment Allowance (up to £10,500/year) can reduce or eliminate the NI element for eligible businesses.
The statutory minimum cost of an employee in the UK (2026/27)
Employing someone in the UK costs more than their gross salary. Every employer must pay employer National Insurance contributions on top of salary — 15% of earnings above £5,000 per year from April 2025 — plus a minimum 3% employer pension contribution under auto-enrolment on qualifying earnings between £6,240 and £50,270. These are statutory minimums. Add any role-specific costs (equipment, software licences, desk space, uniform) and the real cost per employee is consistently 15–25% above the headline salary.
A £30,000 salary costs the employer approximately £34,464 per year in statutory costs alone: £3,750 employer NI plus £714 pension on top of the £30,000 salary. A £40,000 salary costs approximately £46,263: £5,250 NI and £1,013 pension. A £50,000 salary costs approximately £58,411 before any overheads: £6,750 NI and £1,161 pension (qualifying earnings capped at £50,270). These figures assume Employment Allowance is not applied and use 2026/27 rates.
The cost jump introduced by the April 2025 NI changes — rate from 13.8% to 15%, threshold from £9,100 to £5,000 — added between £600 and £1,500 per year to most full-time salaries. Employers who had not revised payroll budgets since 2024/25 will be carrying understated cost assumptions. The calculator lets you run any salary with current 2026/27 rates to produce an accurate baseline.
Worked examples at common salary levels
At the National Living Wage (approximately £23,810/year for a 37.5-hour week at £12.21/hr): employer NI is £2,822 per year, pension £532. Total employer cost approximately £27,164 before overheads. Monthly: £2,264. This is the floor cost for a full-time employee — it applies to retail, hospitality, care and entry-level positions paid at minimum wage.
At £35,000 — typical for experienced administrative, junior professional and mid-level customer-facing roles: employer NI £4,500, pension £863. Total statutory cost £40,363 per year. Monthly: £3,364. At £50,000 — senior specialist, experienced manager, or technical role: employer NI £6,750, pension £1,161. Total statutory cost £57,911. Monthly: £4,826. At £70,000 — director, senior technical lead or experienced legal/finance hire: employer NI £9,750, pension £1,661 (qualifying earnings capped). Total statutory cost £81,411. Monthly: £6,784.
On top of statutory costs, most employers incur per-employee overheads averaging £2,000–£5,000 per year depending on role type. Office-based roles carry desk allocation costs, IT equipment (typically amortised at £600–£1,200/year) and software licences (£300–£1,500/year). Remote-first roles typically carry lower fixed overheads but may involve stipends for home working equipment. For budget purposes, use £3,000 as a mid-point overhead assumption and adjust for your specific setup.
First-year costs vs ongoing costs
Year-one employment costs are always higher than steady-state recurring costs. Recruitment adds a one-off cost of £1,000–£5,000 for in-house hiring (job boards, time, assessment tools) or 10–20% of starting salary for an agency. Onboarding, equipment provisioning and training typically add £500–£2,000 for entry-level roles and £2,000–£8,000 for specialist hires. These costs amortise quickly if the hire is retained but are significant in the first budget year.
Statutory payments can also add cost in year one. Statutory Sick Pay (SSP) is £116.75/week for up to 28 weeks and is funded by the employer (smaller employers can reclaim some under the Statutory Sick Pay Rebate Scheme). Maternity and paternity statutory payments are funded by the employee initially but employers advance the cash — HMRC reimburses most employers 92% and small employers 103%. Budget for the temporary cash-flow impact of statutory payments in year one.
For ongoing headcount cost modelling, the core formula is: gross salary + employer NI at 15% on earnings above £5,000 + employer pension at 3% on qualifying earnings + per-role overhead assumption. Employment Allowance can reduce the NI component by up to £10,500 per year for eligible employers. Use the employer cost calculator for any salary level and pension rate to produce a complete annual and monthly cost breakdown with and without allowance.