True Cost of Hiring: Employee Cost Calculator Guide

Beyond the Salary

The salary you offer is just the starting point. The true cost of an employee is typically 30-50% higher once you factor in all employer costs.

Mandatory Costs

Employer National Insurance: 15% on earnings above £5,000/year. On a £35,000 salary, that's £4,500/year.

Workplace pension: Minimum 3% of qualifying earnings. On £35,000, that's roughly £700-1,050/year.

Holiday pay: 28 days minimum (5.6 weeks). Already included in the salary but represents time not working.

Common Additional Costs

• Sick pay: SSP is £116.75/week, but many employers offer enhanced sick pay
• Training and development: £500-2,000/year average
• Equipment: Laptop, phone, desk setup — £1,000-3,000 initial cost
• Software and licenses: £500-2,000/year per employee
• Recruitment costs: Agency fees (15-25% of salary) or job board costs
• HR and admin: Payroll software, HR support, management time

Example Calculation

For a £35,000 salary employee:

• Salary: £35,000
• Employer NI (15%): £4,500
• Pension (3%): £1,050
• Equipment: £1,500 (amortised)
• Training: £1,000
• Software: £1,000
• True annual cost: £44,050 (26% above salary)

For roles requiring recruitment agencies, add £5,000-8,750.

Employee vs Contractor

Contractors cost more per day but have no NI, pension, holiday, or benefit costs. For short-term needs, contractors can be more cost-effective. For long-term roles, employees usually work out cheaper.