UK Tax Tools

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.

01 —INPUTS
Your team
Reliefs & benefits

Auto-enrolment minimum is 3%; flat rate applied to all team members.

Secondary threshold £5,000 · Employer NI 15.0%

02 —RESULTS

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%

Per-employee breakdown
EmployeeGross salaryEmployer NIPensionTotal 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
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How total UK payroll cost works

Most online "employer NI" calculators take a single salary, multiply by headcount, and call it a day. That happens to match the true bill when every employee earns comfortably above the secondary threshold — but it overstates cost as soon as any employee (a part-timer, say) earns close to or below it, because employer NI is calculated per employee, not on a blended average. 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 — a combined £17,250, the same total a blended-average calculation would give here since everyone earns above the threshold. Add a lower-paid part-timer below the threshold and the two methods diverge.

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. Real businesses have varied pay; a £50k owner + £35k manager + 2 × £25k juniors carries a combined employer NI bill of £17,250 before Employment Allowance. Employer NI is calculated per employee on earnings above £5,000, so a single blended-average salary only matches the true total when every employee earns above that threshold — it understates the bill as soon as any employee (e.g. a part-timer) earns close to or below it.
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, opening EA to more medium businesses.
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 (where 0.5% × £3M = £15k cancels the allowance). Most SMBs do not pay the levy in practice. 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 by using gross salary as a proxy; if your business is close to the £3M threshold, refer to 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: some incorrectly claim while sole-director-only and have to repay up to £10,500 later, while others don't realise that adding a second employee would qualify them and simply miss out on the allowance.

Sources

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