Day Rate Calculator for UK Tradespeople
Work out the minimum day rate you need to hit your target income. Built for UK plumbers, electricians, builders and all trades.
- Van payment, fuel and servicing
- Public liability and tool insurance
- Gas Safe / NICEIC / other certifications and renewals
- Accountant and software (Xero, QuickBooks)
- Marketing, website and lead generation
- Materials markup on pass-through costs
Rates are for 2025 UK market. London rates are typically 25–40% higher than national averages.
UK Trade Day Rates in 2025 Full Guide
Whether you're just starting out as a self-employed tradesperson or reviewing your pricing after years in business, knowing the right day rate is crucial. Charge too little and you're working yourself into the ground. Charge too much without justification and you'll lose jobs to competitors.
This guide covers average day rates for all major UK trades in 2025, how to calculate your own minimum viable rate, and how to factor in the costs most tradespeople forget.
Average plumber day rate UK (2025)
The average day rate for a plumber in the UK is £200–£400 per day in 2025. Most plumbers charge between £250 and £320 for a standard day. Emergency call-outs typically attract a premium of 50–100% on top of the standard rate.
London plumbers charge significantly more typically £300–£450/day reflecting higher costs of living and stronger demand. Plumbers with specialist qualifications (underfloor heating, air source heat pumps, bathroom fitting) command rates at the higher end.
Average electrician day rate UK (2025)
UK electricians typically charge £200–£380 per day in 2025. Approved contractors registered with NICEIC, NAPIT or similar schemes command higher rates than uncertified operatives. EV charger installation specialists and solar PV electricians often charge a premium due to demand.
Average gas engineer day rate UK (2025)
Gas Safe registered engineers typically charge £250–£420 per day, reflecting the specialist licensing required. Boiler installation engineers command rates at the top of this range, while service-only engineers are more likely to be at the lower end.
Day rate vs. job rate which should you use?
Most experienced tradespeople transition from day rates to job rates over time. A job rate is a fixed price for a defined piece of work, regardless of how long it takes. As you get faster and more efficient, your effective hourly rate increases.
- Day rate works well for: refurbishment work, jobs with uncertain scope, working as a subcontractor
- Job rate works well for: standard installs, boiler services, bathroom fits jobs you've done hundreds of times
Your day rate calculator result above gives you a floor the minimum you need to charge per day to cover costs and hit your income target. Whether you charge clients that as a day rate or bake it into job quotes is up to you.
How to calculate your day rate: the formula
The formula is straightforward:
Day rate = (Target salary + Expenses) ÷ Billable days × (1 + Margin %)
Example: A plumber wants to earn £45,000/year, has £14,000 in expenses, works 200 billable days and wants a 15% buffer:
(£45,000 + £14,000) ÷ 200 × 1.15 = £339/day
What to include in your expenses
Most tradespeople underestimate their business expenses. Common costs to include:
| Expense category | Low estimate | High estimate |
|---|---|---|
| Van (lease/finance) | £3,000 | £8,000 |
| Fuel | £2,000 | £5,000 |
| Van insurance | £800 | £2,000 |
| Public liability insurance | £300 | £800 |
| Tool insurance | £200 | £600 |
| Tools and equipment | £500 | £3,000 |
| Certification renewals | £200 | £1,000 |
| Accountant | £400 | £1,200 |
| Marketing and website | £500 | £2,000 |
| Phone and software | £300 | £800 |
How many billable days should you use?
A common mistake is assuming you'll bill for every working day. In reality, self-employed tradespeople typically have:
- 252 working days in a year (5 days × 52 weeks, minus bank holidays)
- Minus 20–25 days holiday
- Minus 5–10 sick days
- Minus 10–20 non-billable days (quotes, admin, training, waiting for materials)
This leaves roughly 190–215 realistic billable days for most tradespeople. Using 200 is a sensible default.