UK Total Payroll Cost Calculator
Model a real team with mixed salaries — owner, managers, juniors, part-timers — and see the total annual cost to employ them. Includes employer NI, Employment Allowance eligibility, pension contributions, and the Apprenticeship Levy.
Auto-enrolment minimum is 3%; flat rate applied to all team members.
Secondary threshold £5,000 · Employer NI 15.0%
Total gross salary
£110,000
Employer NI (after EA)
£3,750
EA used: £10,500
Pension
£3,300
Total cost
£117,050
On-cost: 6.4%
| Employee | Gross salary | Employer NI | Pension | Total cost |
|---|---|---|---|---|
| Owner / Director | £50,000 | £6,750 | £1,500 | £58,250 |
| Manager | £35,000 | £4,500 | £1,050 | £40,550 |
| Junior | £25,000 | £3,000 | £750 | £28,750 |
| Team total | £110,000 | £3,750 | £3,300 | £117,050 |
How total UK payroll cost works
Most online "employer NI" calculators take a single salary, multiply by headcount, and call it a day. That works for chains of identical employees — but no real small business has that structure. A typical four-person SMB might be a £50k owner-director, a £35k manager, and two £25k juniors. Their per-employee employer NI bills are £6,750, £4,500, and £3,000 each — not the £4,406 you'd get from £33,750 × 4.
This calculator builds the team bottom-up: each employee's gross salary feeds an individual NI calculation (currently 15% on earnings above £5,000 per year), then the totals aggregate to a single payroll cost figure. Layer on a flat employer pension contribution rate and the Apprenticeship Levy if relevant.
Employment Allowance reduces the total employer NI bill by up to £ 10,500 for eligible businesses. The allowance is per-business (not per-employee), capped at the actual NI liability, and disqualified for sole-director-only companies. From April 2025 the £100,000 prior-year Class 1 NIC cap was removed, opening EA to a wider pool of medium-sized businesses than before.
Apprenticeship Levy is 0.5% of the annual paybill, less a £15,000 allowance. It only generates a positive charge above £3M of paybill — most SMBs are nowhere near. Connected companies (group companies under common control) share the £15,000 allowance.
Frequently asked questions
How is total UK employer cost calculated?
Total employer cost = gross salary + employer National Insurance (15% on earnings above the £5,000 secondary threshold for 2026-27) + employer pension contributions + Apprenticeship Levy if applicable. The Employment Allowance offsets up to £ 10,500 of employer NI for eligible businesses.
Why does this calculator differ from single-salary employer NI calculators?
Single-salary calculators multiply one salary × headcount, which overstates cost for teams with junior employees and understates it for teams with senior leadership. Employer NI is calculated per employee on earnings above £5,000, so different salary distributions produce different totals. A £50k owner + £35k manager + 2×£25k juniors costs £17,250 in ER NI before Employment Allowance — not the £17,625 you'd get from 4 × £33,750 (their average).
Who is eligible for Employment Allowance?
Most UK businesses with at least one employee earning above the £ 5,000 secondary threshold qualify for up to £ 10,500 of Employment Allowance against their employer NI bill. Disqualified: sole-director-only companies (the only employee is the director), public bodies, and businesses where over 50% of work is for the public sector. From April 2025, the £100,000 prior-year Class 1 NIC cap was removed.
When does the Apprenticeship Levy apply?
The Apprenticeship Levy is 0.5% on the annual paybill, less a £15,000 allowance per business. It only triggers a positive charge once paybill exceeds £3,000,000. Most SMBs do not pay the levy. Connected companies share a single £15,000 allowance across the group.
What counts as 'paybill' for the Apprenticeship Levy?
Paybill is total earnings subject to Class 1 secondary (employer) National Insurance — broadly gross salaries above the secondary threshold. Excluded: benefits-in-kind, pension contributions, and earnings of employees under 16 or under-21 apprentices. The calculator approximates this with gross salary; if your business is near the £3M threshold, check HMRC's exact paybill definition.
Why is sole-director-only company called out as a separate case?
Since 6 April 2016, an Employment Allowance claim is denied if the company has only ONE employee for the entire tax year and that employee is also a director. Adding a non-director employee earning above the secondary threshold qualifies the business. Many one-person Ltd companies miss this rule and either lose out on the EA or have to repay it after a claim.
Sources
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