How Much Should a Plumber Charge in the UK?

TL;DR: Most UK plumbers set their rate by copying the firm down the road, then wonder why the year ends tight. Your price should start from your own costs (van, insurance, tools, and the hours you cannot bill), not from a competitor's website. This guide walks through hourly, day-rate and fixed-price models, a worked example with real numbers, and the call-out fee that quietly decides whether a job pays.

Ask ten UK plumbers what they charge and you will get ten different answers, most of them guesses. One says £50 an hour because that is what the bloke he trained with charged. Another quotes £300 a day because it sounds fair. Neither has worked out what the business actually needs to take, which is why both can be busy all year and still finish skint.

The honest answer is: enough to cover your real costs, pay yourself a proper wage, and leave something over. That figure is personal to your business, and copying someone else's rate is how you inherit their mistakes.

Before you look at what anyone else charges, work out what an hour of your time has to earn. This is the number every other pricing decision hangs off, and most plumbers have never sat down to calculate it.

Your costed hour is not your wage. It is the rate that covers everything the business has to pay for, divided by the hours you can actually sell. The gap between those two numbers is where margins quietly disappear.

Three things make the costed hour higher than people expect:

• Unbillable time. Quoting, driving, buying parts, chasing payment, doing the books. A 40-hour week rarely contains more than 25 to 30 billable hours.
• Standing costs. Van finance and fuel, public liability and tools insurance, your Gas Safe registration if you hold one, phone, software, protective gear. These get paid whether you work or not.
• The slot you cannot resell. A cancelled morning is gone. You cannot stack it on top of next week.

Price the time honestly, then check it against the local market. Doing it the other way round, market first and costs second, is how the trade ends up underpaid.

Say you want to take home £35,000 a year before tax. That is your wage, not your turnover.

Now add the costs the turnover has to cover on top: van and fuel at roughly £6,000, insurance and registrations at £1,500, tools and materials wastage at £1,500, phone, accounting and software at £1,000. That is about £10,000 of standing cost, so the business needs to bill around £45,000.

Here is the part that trips people up. You do not get 1,600 billable hours from a working year. After holidays, illness, quoting and admin, a realistic figure for a solo plumber is closer to 1,100. Divide £45,000 by 1,100 and your costed hour is roughly £41.

That is the floor before profit. Charge £40 an hour thinking it is a healthy rate and you are running the business at break-even, with nothing left to grow, replace the van, or carry a quiet month. A defensible domestic rate that includes a margin lands closer to £50 to £60 an hour once you have done this sum, not because the market says so but because your own numbers do.

These figures are illustrative. Your van cost, your area and your billable hours will differ, which is exactly why a borrowed rate is a poor fit. To run the sum on your own numbers, a plumber pricing calculator (P05 Pricing Calculator Premium, £14.99) is an 8-sheet Excel workbook built to do this properly, so the rate on your quotes is the rate your business actually needs.

Once you know your costed hour, the model you quote in is a separate decision. Each suits different work.

Hourly suits short, unpredictable jobs: a leak, a faulty valve, a diagnostic call where nobody knows the scope until the panel is off. The risk sits with the customer, which is fair when the work is genuinely unknown. Round to a sensible minimum so a 20-minute job still pays for the drive.

Day-rate suits bigger, planned work like a bathroom rip-out or a full repipe. It is simpler to quote and the customer knows the daily figure up front. Make sure your day-rate is your costed hour multiplied by billable hours in a day, not by clock hours. Charging a day-rate built on eight hours when you bill six is a quiet pay cut you give yourself.

Fixed-price suits well-defined jobs you have done a hundred times, like a boiler swap or a standard install. You carry the risk, so you price in a buffer for the job that goes sideways. Done right it is the most profitable model, because efficiency you have earned stays with you instead of being handed back on the clock.

Most established plumbers use all three depending on the job. The mistake is picking one out of habit and forcing every job into it.

The call-out fee is the most commonly copied and least understood number in the trade. Plumbers see a competitor advertising "£60 call-out" and match it without asking what it is meant to cover.

A call-out fee is not pure profit. It exists to cover the cost of turning up (the drive, the fuel, the slot, the diagnostic time) before a single part is fitted. Set it too low and every short job loses money. Set it with no relation to your actual travel costs and you are guessing again.

Work it out from the same costed hour. If reaching a job and assessing it costs you the better part of an hour once you count travel both ways, your call-out fee needs to reflect that hour, not a round number borrowed from the van down the road.

Many sole-trader plumbers sit under the VAT registration threshold and add no VAT, so the price you quote is the price the customer pays. Check the current threshold on GOV.UK before you assume either way, because the figure changes and crossing it has real consequences for a domestic-focused business.

If you are VAT-registered, your prices to consumers should be shown including VAT, and your rates still need to leave a margin once that 20% is accounted for. This is where structured records earn their keep: a plumber financial forms bundle (P07 Financial Forms Bundle Standard, £11.99) gives you the invoice, expense and mileage forms that keep the numbers behind your pricing clean, so deciding whether to register is a calm call rather than a January panic.

A calculator will not tell you the right price on its own, and it would be dishonest to pretend otherwise. The number it produces is a floor and a guide, not a guarantee a customer will say yes. Local competition, your reputation, how booked you are, and how badly the customer wants the leak gone all move the final figure.

If you are starting out and need work through the door, pricing slightly under your full margin for a season to build a book is a legitimate different decision, as long as you know you are doing it and have a date to put it right. The danger is not charging a low rate on purpose. It is charging one by accident, year after year, because you never costed the hour.

If you do nothing else after reading this, work out your real costed hour once. Everything else, from the call-out fee to the day-rate to whether you take a fixed-price job, cascades from that one number.

A price you cannot present cleanly gets discounted at the door. Once your numbers are sorted, a clear rate sheet stops the awkward haggling on the step: a plumber price list and service menu (P11 Price List & Service Menu, £4.99) lays out call-out, hourly and common fixed-price jobs in one document you can hand over or attach to a quote.

The model you choose affects your records as much as your margin. Making Tax Digital changes how those records have to be kept, so it is worth reading our breakdown of Making Tax Digital for plumbers alongside your pricing, because the two decisions land together.

Cost your hour first, choose the model that fits the job second, and price from your own numbers rather than the firm down the road. That is the difference between a plumber who is busy and a plumber who is paid.

This article is general guidance, not tax advice and not legal advice, written for UK plumbers. Verify current VAT thresholds and HMRC rules on GOV.UK before making registration or pricing decisions.