Understanding the true cost of an employee in the UK
When hiring staff, an employee's contracted gross salary represents only part of your true payroll expenditure. UK employers are legally required to fund mandatory statutory on-costs on top of wages, including employer Class 1 National Insurance contributions and automatic enrolment workplace pensions.
From April 2025, employer National Insurance is charged at 15% on earnings above the secondary threshold of £5,000 per year (£96 per week). This significantly increases payroll liabilities compared to previous tax years, particularly for businesses that do not qualify for the £10,500 Employment Allowance.
Under UK auto-enrolment rules, employers must also contribute a legal minimum of 3% toward workplace pensions for eligible jobholders earning over £10,000 per year, calculated on qualifying earnings between £6,240 and £50,270 (or on total gross pay depending on the scheme rules). Adding benefits, software licenses, workspace, and training typically adds 15% to 25% or more on top of base salary.
Worked example: Hiring an employee on £35,000 salary
Suppose your business recruits a full-time employee on a contracted gross base salary of £35,000.00 per year under 2026/27 rates, with a standard 3% qualifying earnings pension, no Employment Allowance, and no Apprenticeship Levy.
Employer National Insurance: The secondary threshold is £5,000.00, leaving £30,000.00 of salary subject to employer Class 1 NI. At the 15% rate, your annual employer NI liability is £4,500.00 (£375.00 per month).
Workplace Pension: Qualifying earnings span from £6,240.00 to £50,270.00. For a £35,000.00 salary, qualifying pensionable earnings are £28,760.00 (£35,000.00 minus £6,240.00). The statutory 3% employer contribution equals £862.80 per year (£71.90 per month).
Total employment cost: Combining the £35,000.00 base salary with £4,500.00 employer NI and £862.80 pension yields a total annual employer cost of £40,362.80. This represents an on-cost amount of £5,362.80 (an on-cost percentage of 15.3% on top of base salary), requiring a monthly budget of £3,363.57, a weekly cost of £776.21, and an hourly cost of £20.70 based on a standard 37.5-hour working week.
Key employer on-costs and allowances to consider
Several statutory rules and business variables determine your total staff costs:
Employment Allowance: Eligible small businesses and charities can claim up to £10,500 per year to offset against their employer Class 1 National Insurance bill. For a company with a single £35,000 employee that qualifies, this allowance reduces employer NI to £0, lowering annual employment costs from £40,362.80 to £35,862.80.
Apprenticeship Levy: Organizations with an annual UK pay bill exceeding £3,000,000 must pay the Apprenticeship Levy at 0.5% of total gross wages, offset by an annual £15,000 levy allowance.
Discretionary benefits and overheads: Providing private healthcare, life insurance, gym memberships, recruitment placement fees, computer hardware, and training courses further increases the comprehensive cost of each team member.
Inputs for the Employee cost calculator
Employee annual gross salary
The contracted gross yearly base salary paid to the employee before deductions.
Tax year
The UK tax year used to determine employer National Insurance thresholds and contribution rates.
Pension scheme basis
Choose whether workplace pension contributions are calculated on auto-enrolment qualifying earnings (£6,240 to £50,270), total gross salary, or opted out.
Employer pension contribution
The percentage contributed by the employer toward the employee pension scheme (minimum 3% under auto-enrolment).
Employment Allowance claimed?
Select Yes if your business claims the annual £10,500 Employment Allowance to reduce employer Class 1 NI liabilities.
Annual bonus or commission
Anticipated annual cash performance bonuses or sales commissions subject to employer National Insurance.
Benefits & healthcare (annual)
Yearly expenditure on non-cash benefits such as private medical insurance, death in service, and wellness allowances.
Equipment & overheads (annual)
Direct physical and software costs per employee including laptops, desk space, and software subscriptions.
Apprenticeship Levy applies?
Select Yes if your organization's total annual UK payroll exceeds £3 million, triggering the 0.5% levy.
CALCULATOR QUESTIONS
Employee cost calculator questions
What is the true cost of an employee in the UK?
As a general rule, employing someone in the UK costs between 15% and 25% more than their gross base salary once employer Class 1 National Insurance (15% above £5,000), auto-enrolment workplace pension (minimum 3%), and basic equipment or benefits are included.
What is the employer National Insurance rate for 2026/27?
The employer Class 1 National Insurance rate is 15% on employee earnings above the secondary threshold of £5,000 per year (£96 per week). Eligible employers can offset up to £10,500 of their total annual bill through the Employment Allowance.
What is the statutory minimum employer pension contribution?
Under UK auto-enrolment rules, employers must contribute at least 3% of an eligible employee's qualifying earnings (earnings between £6,240 and £50,270), while the employee contributes 5%, creating a minimum total contribution of 8%.
Who has to pay the Apprenticeship Levy?
Only employers with a total annual pay bill exceeding £3,000,000 are liable to pay the Apprenticeship Levy. It is charged at 0.5% of total gross earnings and is offset by an annual £15,000 levy allowance.