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Employed vs Self-Employed Plumber: What Can You Really Earn in the UK? (2026)

By Paul Lewis — time-served tradesman with over 40 years in the building services industry, former owner of his own contracting business, and five years teaching apprentices and adult learners in further education.

Most plumbers thinking about going self-employed have one question first: will I actually earn more? The honest answer is that you can earn a lot more, but only if you price your work properly and keep your diary full. This guide compares typical employed pay with what a self-employed plumber really takes home once the costs are paid.

What does an employed plumber earn?

In 2026, a qualified employed plumber in the UK typically earns somewhere between £30,000 and £42,000 a year. Pay depends mainly on:

Newly qualified plumbers usually start towards the lower end.
Gas Safe registration. Plumbers who can work on gas are paid noticeably more.
London and the South East pay most, with lower rates in parts of the North and in rural areas.
Type of employer. Commercial, industrial and specialist contractors tend to pay more than domestic firms.

Employed pay also comes with benefits that are easy to forget: paid holidays, sick pay, an employer pension contribution, and usually a van, fuel, tools and insurance provided by the company.

What does a self-employed plumber charge?

Self-employed plumbers typically charge around £50–£60 an hour in 2026, or roughly £200–£400 a day depending on experience, location and the type of work. Gas Safe registered engineers and those in London and the South East are usually at the higher end.

That sounds like much more than a wage, but the day rate is not what you take home.

Turnover is not income

When you’re employed, your company pays for the van, the fuel, the tools, the insurance and your time off. When you’re self-employed, all of that comes out of your day rate. You also only get paid for the hours you’re actually working on a job. Time spent quoting, buying materials, driving between jobs, doing paperwork and chasing payments earns you nothing directly.

How many days can you really charge for?

A year has about 260 working days. Take off:

28 days for holidays and bank holidays
5 days for sickness, as an allowance
About 45 days for quoting, admin, buying materials, training and gaps between jobs (roughly one day a week)

That leaves around 180 days you can actually charge for. Many new self-employed plumbers assume they’ll bill 250 days a year, and that is where their sums go wrong.

A worked example

Here’s an illustration for a self-employed plumber charging £250 a day for 180 days. Your own figures will differ.

Turnover: 180 days × £250 = £45,000

Typical yearly business costs:

Van fuel, servicing, tyres and MOT: £3,000
Van insurance: £1,200
Van purchase or finance, spread over its life: £2,000
Public liability and tool insurance: £400
Tools, replacement kit and calibration: £1,000
Gas Safe registration and assessments: £500
Phone, software and accountant: £1,200
Marketing, workwear and sundries: £500

Total costs: about £9,800

Profit before tax: about £35,200

That’s roughly the same as an experienced employed plumber, but without paid holidays, sick pay or an employer pension.

Now the same plumber charging £350 a day:

180 days × £350 = £63,000 turnover, minus about £9,800 costs = about £53,200 profit before tax.

The difference between those two results is the whole case for self-employment. Going self-employed only pays more if your prices cover your costs, your time off and a proper profit.

What about tax?

Both employed and self-employed plumbers pay Income Tax at the same rates. The self-employed pay Class 4 National Insurance on their profits instead of employee National Insurance, at a lower main rate. As a sole trader, you also claim business costs such as your van, tools and insurance against tax, which an employee can’t do. You pay your tax through Self Assessment rather than having it taken from your wages, so set money aside every month.

The things that aren’t about money

Self-employment also brings things that don’t show in the figures:

You choose your work, your customers and your hours.
Your income can grow as your reputation and prices increase.
You carry the risk. Quiet weeks, late payers and broken-down vans all come out of your pocket.
You do all the admin, and that time has to come from somewhere.

For many plumbers, the control is worth as much as the extra money. For others, the security of a wage is worth more. Neither choice is wrong.

Thinking of making the move? How to Start Up and Run Your Own Plumbing and Heating Business by Paul Lewis shows you how to work out your true business costs, set an hourly rate that covers them, quote with confidence and keep your diary full. It includes a self-employment readiness check and a chapter-by-chapter action checklist. See inside the book →

How to make self-employment pay

Work out your real costs first, then set your rate. Don’t just copy what others charge.
Be realistic about billable days. Plan on around 180, not 250.
Get Gas Safe registered if you can. It opens up the best-paid domestic work.
Build regular work with builders, landlords and letting agents to keep your diary full.
Review your prices every year, as your costs and experience grow.

Frequently asked questions

How much does a self-employed plumber earn in the UK? Typical profits range from the low £30,000s for someone charging a modest day rate to £50,000 or more for experienced, Gas Safe registered plumbers who price their work properly. It depends far more on your prices and how full your diary is than on your skill.

How much does an employed plumber earn in the UK? Typically £30,000 to £42,000 a year for a qualified plumber in 2026, plus benefits such as holiday pay, sick pay, a pension and often a company van.

Is it worth going self-employed as a plumber? It can be, as long as your prices cover all your costs and time off. At a low day rate, many self-employed plumbers earn no more than they would employed, while taking on more risk.

How many days a year can a self-employed plumber charge for? Around 180 is a realistic figure once holidays, sickness, admin and quoting time are taken out.

For everything you need to set up, see our full guide: How to Start a Plumbing Business in the UK (2026).

Figures are typical 2026 ranges and an illustrative example only. Your own earnings will depend on your location, prices, costs and workload.

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