How to Quote a Job Properly: The UK Trade's Guide

A quote is a fixed price for a defined piece of work, set out clearly enough that both you and the customer know exactly what's included. Done properly, it's the document that protects your margin and settles arguments before they start. Done loosely, it's where most trades quietly give money away: on scope they never pinned down, changes they never charged for, and prices that didn't cover the work. Quoting well is the difference between the price you say and the profit you keep.

This is the overview. Each section below has a deeper guide underneath it, linked as you go.

Part 1Why does quoting decide whether a job makes money?

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Most trades think a job's profit is decided on site, in how fast and clean the work goes. Some of it is. But the bigger chunk is decided before a tool comes out of the van, in the quote.

Here's how it goes wrong. A builder wins a bathroom refit on a keen number, knocked out at 9pm after a ten-hour day. The quote says "supply and fit bathroom suite, retile, make good." No detail on whose suite, what tiles, what "make good" covers, what happens if the floor's rotten under the old bath. The customer reads "make good" as "leave my house perfect." The builder meant "fill the chase and skim." Three weeks later they're arguing about a ceiling that needs replastering, the tile spec has crept from budget ceramic to large-format porcelain, and the floor was rotten. None of it was priced. The builder eats most of it to keep the peace, and a job that looked like 18% margin comes in nearer 4%.

None of that was caused on site. It was caused in the quote. A vague quote is an open invitation for the cost to drift onto you, because where the quote is silent, the customer's assumption wins.

Part 2Quote or estimate, which are you actually giving?

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This is the one that catches people first, so it's worth being straight about. An estimate is a rough guess at cost before you know everything. A quote is a fixed price you're held to once it's accepted. Treat a quote like an estimate and you'll keep absorbing overruns. Treat an estimate like a quote and you'll bind yourself to a number that doesn't cover the work.

The lazy middle, the phone-call "you're looking at about two grand," is neither, and it's where the money leaks. Decide which one you're giving before you open your mouth, and label it.

Read the detail: Quote vs estimate — what's the difference, and which one's costing you money.

Part 3What goes into a quote that holds up?

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A quote that protects you has more in it than a number. The figure is the easy part. What stops the arguments is everything around it:

• A defined scope. What's included, and just as importantly what isn't. "Supply and fit" versus "fit only." Whether making good, rubbish clearance and final clean are in or out. Every line you leave vague is a line the customer fills in their favour.
• A clear breakdown. Labour, materials, and the tax handled correctly. If you're under CIS or the Domestic Reverse Charge, that has to be right on the document, not patched up at invoice stage. (Our VAT, DRC and CIS guide covers which applies to you.)
• Payment terms. Deposit, any stage payments, the final balance, and how long they've got to pay. Loose terms are how a £4,000 final payment ends up 60 days late.
• A validity period. Material prices move. "Valid for 30 days" stops a customer accepting your spring price in autumn.
• A line on variations, so changes get priced when they happen, not fought over at the end.
• Your name on it, professionally. A scribbled figure on the back of a flyer and a clean branded quote can carry the same price, but they don't win the same trust, and they don't hold up the same when there's a dispute.

Read the detail: What to put in a quote — the full checklist, section by section.

Part 4How do you price it so the quote covers the work?

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A tidy quote built on a bad number still loses money. The price underneath has to recover everything the job actually costs you, including the costs most trades forget: van, fuel, insurance, tools, time spent quoting jobs you don't win, the hour on the phone to the merchant. That's overhead, and if your day rate doesn't recover it, every quote you send is undercooked before you've added a penny of profit.

Getting the number right is its own job, and we've covered it properly in how to price a job and not lose money: hidden costs, markup versus margin, and turning your real overheads into a day rate that actually pays for the business.

Part 5What happens when the customer changes the job?

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This is where the most money moves, and it's got nothing to do with your original quote being wrong.

You're second-fixing an extension and the customer catches you with a smile: "while you're here, could you knock the old serving hatch through into a proper opening?" Happy to. But carry on without recording it and you've worked for free, because at the final bill there's no paper trail. The customer doesn't remember agreeing to extra money. They remember the quote.

A change to the agreed scope is a variation, and it needs pricing and recording the moment it comes up, before you do the work. Not a row at the end. A quick "no problem, that opening's about another £320 with the making good, I'll add it to your quote, all good?" and a record of them saying yes. That one habit is the difference between getting paid for the extras and swallowing them. On most jobs that go over, the money went missing in the changes, not the quote.

Read the detail: Handling variations — pricing the extras without the awkwardness.

Part 6How do you make it easy for the customer to say yes?

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A quote isn't only a price, it's a sales document. Two trades quote the same bathroom at the same money. One sends a vague text three days late. The other sends a clear, branded quote within the day, scope spelled out, payment terms plain, looks like a business that has its act together. The customer picks the second one, often even when they're a touch dearer, because the quote itself is proof the job will be run properly.

Speed and clarity win work. The figure matters, but the trade who quotes fast and looks professional beats the one who's cheaper and shabby more often than you'd think.

Part 7What if it goes wrong and there's a dispute?

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When a job turns sour over money, the quote is the thing you point at. A good one ends the argument fast: here's what was agreed, here's what was included, here's the variation you signed off. A vague one leaves it as your word against theirs, and that's a fight you can lose even when you're right.

This is general guidance, not legal advice, and how a specific dispute lands depends on what was said, written and done. If a real one's brewing, that's one for a solicitor. But the practical defence is the same in every case: a clear quote, written down, with changes recorded as they happened. The paperwork you resent doing on a Sunday night is the paperwork that gets you paid when it goes wrong. (Our guide on getting paid on time covers chasing the money when it goes quiet.)

Read the detail: Is a quote legally binding? What an accepted quote actually commits you both to.

Common questionsQuoting: quick FAQ

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What's the difference between a quote and an estimate?

An estimate is a rough guess at cost. A quote is a fixed price you're held to once it's accepted. Full detail in the quote vs estimate guide.

Can I change my quote after the customer's accepted it?

Not on your own. Once accepted, it's the agreed price. You can add to it, but only by pricing a variation and getting the customer to okay it before you do the extra work.

Should I break my quote down or give one figure?

Break it down enough to be trusted: labour, materials and VAT handled right. A single lump sum invites the customer to start chipping at it. A clear breakdown shows you know your numbers.

How long should a quote stay valid?

Long enough to be fair, short enough to protect you from moving material prices. A 30-day validity period is common and easy to justify.

Do I need to put VAT or CIS on the quote?

If they apply to you, yes, on the quote, not bolted on later. Getting it wrong at quote stage causes problems at invoice stage. See the VAT, DRC and CIS guide.

This guide is general information for UK tradespeople, current to the best of our knowledge in 2026. Rules, rates and thresholds change, and how they apply depends on your specific circumstances. It is not tax, accounting or legal advice. Always confirm your position with HMRC, a qualified accountant or a solicitor before relying on it. TradeDraft accepts no liability for decisions made on the basis of this guide. Questions: hello@tradedraft.co.uk.

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