Most business owners drastically underestimate the cost of hiring. A £30,000 employee actually costs £40,000-£45,000+. Here's why.
The Salary Is Just the Start
What you think:
"I'll hire someone for £30,000/year."
What it actually costs:
£30,000 (salary) + £3,850 (employer NI) + £1,500 (pension) + £2,000 (equipment) + £3,000 (other costs) = £40,350+
That's 35% more than the salary alone.
The Full Cost Breakdown
1. Gross Salary
The amount promised to the employee.
Example: £30,000/year
2. Employer's National Insurance (NI)
You pay 13.8% on earnings above £9,100 (as of 2024/25).
Calculation:
(£30,000 - £9,100) × 13.8% = £2,884
3. Pension Contributions
Minimum 3% employer contribution (auto-enrolment).
Calculation:
£30,000 × 3% = £900
Many employers offer 5-8%, so this could be £1,500-£2,400.
4. Equipment & Setup
One-time:
- Laptop: £800-£1,500
- Monitor, keyboard, mouse: £200
- Software licenses: £500/year
- Desk and chair (if office): £400
Ongoing:
- Phone: £30/month = £360/year
- Software subscriptions: £500-£1,000/year
Annual average: £1,500-£2,500
5. Workspace Costs
Office space: £200-£500 per desk per month (London: £500-£1,000)
Remote: £50/month home office allowance = £600/year
6. Training & Development
Industry average: £1,000-£2,000/year per employee
7. HR & Administration
Payroll software: £5-£20/employee/month = £60-£240/year
HR support: £500-£1,500/year
Insurance (employers' liability): £100-£300/year
8. Recruitment
Agency fee: 15-20% of salary (£4,500-£6,000 for a £30k hire)
Job ads: £300-£500
Your time: 20-40 hours
Amortized over 2 years: £2,000-£3,000/year
9. Benefits (if offered)
- Private health insurance: £500-£1,500/year
- Life insurance: £100-£300/year
- Cycle to work, gym, other perks: £200-£500/year
10. Holidays & Sick Pay
28 days minimum holiday (including bank holidays)
That's 10.8% of working days you pay for but get no work.
Sick days: Average UK worker takes 5.8 days/year
Total paid non-working time: ~34 days (13% of year)
This is already in the salary, but affects productivity expectations.
Total Annual Cost: £30k Salary Example
| Item | Cost |
|------|------|
| Gross salary | £30,000 |
| Employer NI | £2,884 |
| Pension (3%) | £900 |
| Equipment | £1,500 |
| Software | £800 |
| Workspace | £2,400 |
| Training | £1,000 |
| HR/admin | £500 |
| Recruitment (amortized) | £2,500 |
| Total | £42,484 |
That's 42% above the salary.
For Higher Salaries, It's Even More
£50,000 salary:
- Employer NI: (£50k - £9,100) × 13.8% = £5,644
- Pension (5%): £2,500
- Other costs: £8,000+
- Total: ~£66,000
That's 32% overhead.
Hidden Costs Not in the Numbers
Management time: 5-10 hours/week managing each employee
Lower productivity: New hires take 3-6 months to reach full productivity
Redundancy risk: Statutory redundancy pay if you need to let them go
Legal risk: Employment tribunal costs average £8,500
Why This Matters for Pricing
If you bill clients for your employee's time, you can't just add 20% to their salary and call it profit.
£30k employee, £42k true cost:
To break even at 80% billable hours (1,600 hours/year):
£42,000 ÷ 1,600 = £26.25/hour
To make 30% profit:
£26.25 × 1.30 = £34/hour or £272/day
The Freelancer vs Employee Decision
Freelancer at £350/day:
- No NI, pension, or benefits
- No workspace or equipment costs
- No management overhead
- Pay only for days worked
- Can scale up/down easily
Employee at £30k (£42k true cost, £272/day equivalent):
- Fixed cost whether you have work or not
- Requires management and infrastructure
- Legal obligations and notice periods
- Benefits from loyalty and company knowledge
Freelancer is cheaper until you need 200+ days/year of work.
Use our Payroll Cost Calculator to see the true cost of your hiring plans.