An employee costs an employer considerably more than the salary. Employer National Insurance is charged at 15 per cent on earnings above £5,000 a year with no upper limit, auto-enrolment obliges a minimum pension contribution of three per cent of qualifying earnings, and payrolls above £3 million a year also pay the apprenticeship levy at 0.5 per cent. On a £30,000 salary that adds roughly £4,460, taking the true cost to about £34,500 before any benefits, equipment or recruitment fee. Eligible employers reduce the National Insurance bill with the Employment Allowance, claimed through payroll, which changes nothing on the employee's own payslip. Recruitment fees and equipment sit on top again. Recruitment fees, equipment and training sit on top again, which is why a hire is rarely costed below fifteen per cent above the salary itself.
How Employer Costs Work in the UK
When hiring an employee in the UK, the gross salary is only part of the cost. Employers must also pay employer National Insurance contributions on top of the gross salary, and make pension contributions under auto-enrolment. Together, these additional costs typically add 14% to 19% to the headline salary figure, depending on the salary level and pension scheme.
The three components of total employer cost are:
- Gross salary – the headline figure agreed with the employee.
- Employer National Insurance – a tax on the employer, charged at 15% on all earnings above £5,000 per year.
- Employer pension contribution – a minimum of 3% of qualifying earnings under auto-enrolment rules.
Understanding the true cost of employment is essential for budgeting, headcount planning, and negotiating salaries. A role advertised at £40,000 actually costs the employer over £46,000 when employer NI and pension are included.
Employer National Insurance 2026/27
Employer NI is charged at 15% on all employee earnings above the secondary threshold of £5,000 per year. This rate took effect in April 2025 (increased from 13.8%) and continues into the 2026/27 tax year.
A critical difference from employee NI: there is no upper earnings limit for employer NI. While employees pay a reduced 2% NI rate above £50,270, employers continue to pay the full 15% on all earnings above the threshold, no matter how high the salary. This makes employer NI particularly significant for high earners. On a £100,000 salary, employer NI alone is £14,250.
Employer NI is not deducted from the employee's pay, it is an additional cost borne entirely by the employer. However, economists widely agree that employer NI is effectively passed on to employees through lower wages than would otherwise be offered.
Employer Pension Contributions
Under auto-enrolment, employers must contribute a minimum of 3% of qualifying earnings to eligible employees' workplace pensions. Qualifying earnings are the portion of salary between £6,240 and £50,270 per year for 2026/27.
For example, on a £30,000 salary, qualifying earnings are £23,760 (£30,000 minus £6,240), and the minimum employer pension contribution is £713 per year (3% of £23,760).
Many employers choose to contribute more than the 3% minimum, or to calculate pension contributions based on the full gross salary rather than qualifying earnings. This calculator lets you adjust both the percentage and the calculation basis to match your specific scheme.
Employment Allowance
The Employment Allowance lets eligible employers reduce their employer NI bill by up to £10,500 per year. It is claimed through payroll software and reduces the employer NI due each pay period until the allowance is used up.
Not all employers qualify. The Employment Allowance is not available to:
- Companies where the sole employee is also a director
- Public sector employers and those carrying out more than half their work in the public sector
- Employers using deemed payment rules (IR35 applied by the employer)
For eligible small businesses, the Employment Allowance can eliminate employer NI entirely on lower salaries. For example, a £30,000 salary generates £3,750 in employer NI, which is fully covered by the £10,500 allowance.
Employer Cost Examples
The table below shows the total annual cost to an employer at common salary levels, assuming the minimum 3% employer pension on qualifying earnings and no Employment Allowance:
At lower salary levels the additional costs represent around 14-15% on top of the gross salary. At higher salaries the percentage rises because employer NI has no cap, while pension contributions are limited to qualifying earnings up to £50,270.
Sources
For a complete overview of all tax rates and thresholds this year, see our UK Tax Year 2026/27 guide.
Recruiting on a budget: the questions to settle first
Before advertising, three figures need agreeing: the salary band, the full annual cost including National Insurance and pension, and the point at which the role pays for itself. The third is the one most often skipped, and it is what turns a hire from a cost into an investment. For a revenue-generating role it might be a target; for a support role it is usually the time freed up elsewhere.
The Employment Allowance, salary sacrifice arrangements and the apprenticeship levy all change the arithmetic, and each has eligibility rules worth checking rather than assuming. A payroll provider or accountant will confirm them in a short conversation, and the answer can shift the annual cost of a hire by several thousand pounds. Setting the band before the first interview also avoids the commonest recruitment failure, which is agreeing a salary the budget cannot sustain once the on-costs are added. A band of two or three thousand pounds leaves room to reward experience without reopening the budget.
Contractors, umbrellas and the true comparison
Comparing an employee with a contractor on headline cost is misleading in both directions. A day rate carries no employer National Insurance, no pension contribution, no holiday and no notice, so £400 a day for 220 days is £88,000 with nothing on top. An employee on £70,000 costs closer to £80,000 once National Insurance and pension are added, and comes with paid leave, sick pay and a notice period on both sides.
Where an engagement falls inside the off-payroll rules, the fee-payer becomes responsible for deducting tax and National Insurance as though the contractor were an employee, and the employer's contribution lands on top of the agreed rate unless the contract says otherwise. Getting that determination right before the engagement starts is considerably cheaper than correcting it afterwards.
Budgeting for a hire over the first year
The salary is the predictable part. What catches out a small employer is the shape of the first year: recruitment costs land before any work is done, equipment and training follow in the first month, and productivity typically reaches its normal level somewhere between the third and the sixth. Budgeting the full annual cost from day one, rather than the salary alone, is what keeps a hire from becoming a cash-flow problem in month two.
Two levers reduce the bill legitimately. The Employment Allowance offsets employer National Insurance for eligible businesses, claimed through payroll and worth several thousand pounds a year to a small employer. Salary sacrifice arrangements reduce the employer's National Insurance as well as the employee's, because the sacrificed pay is no longer earnings, and many employers share part of that saving by paying it into the pension.
What a hire really costs, line by line
Start with a £30,000 salary. Employer National Insurance at 15 per cent on earnings above £5,000 adds £3,750. Auto-enrolment adds a minimum three per cent of qualifying earnings, roughly £713. That takes the payroll cost to about £34,463 before anything else, and the Employment Allowance can offset part of the National Insurance for eligible employers.
Then come the costs that never appear in a payroll report. Recruitment, whether an agency fee at fifteen to twenty per cent of salary or the time of the people interviewing. Equipment and software licences. Training and the productivity gap of the first months. Holiday cover. Employers' liability insurance. Together they routinely add another ten to twenty per cent in the first year.
That is why the gap between what an employee costs and what they receive is so wide, and why a request for a £2,000 rise is a larger decision than it appears: with National Insurance and pension on top it costs the employer roughly £2,300 a year, every year, and it compounds with every future rise.