Guides › Trades paperwork guide › Quote vs Estimate (UK): What’s the Difference for Tradespeople? · Updated 26-10-2026
Quote vs estimate in the UK: which one should you send?
In the UK a quote is generally treated as a fixed price for the work described, while an estimate is an informed guess that can change. Send a quote when you know the job; send an estimate, or a quote with clearly marked unknowns, when you cannot see everything yet.
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What a customer hears
Customers rarely read the small print. If your document says “quote” and a total, most will expect to pay that total. If it says “estimate”, they still expect the final bill to be close. That is why the words around the price matter as much as the label at the top.
When a quote is the right choice
- The job is well defined: replace a boiler like-for-like, fit a consumer unit, re-tile a known area.
- You have seen the site and can price materials and labour with confidence.
- The customer is comparing several trades and wants a firm number.
A quote wins work because it removes risk for the customer. Protect yourself by writing the scope precisely and listing exclusions.
When an estimate is safer
- Hidden work: what is behind a boxed-in pipe, under floorboards or under old roof tiles.
- Repairs where the fault is not yet diagnosed.
- Jobs that depend on choices the customer has not made yet.
The middle ground: quote with provisional sums
Most disputes come from mixing the two. A cleaner way is a fixed quote for everything you can see, plus clearly labelled provisional sums for the unknowns, for example “Replace rotten joists if found: provisional £300, adjusted to actual cost.” The customer sees a firm price and knows exactly which part can move. Our builders quote guide shows how to set out stages and provisional sums.
Words to put on the document
- “This quote is for the work described above. Any additional work will be agreed in writing before it starts.”
- A valid-until date, because material prices move.
- What happens if the customer changes the job: a variation, priced and agreed before you do it.
Same numbers either way
Whether you call it a quote or an estimate, the price underneath should come from the same method: materials with waste, labour at your real hourly cost, overheads and margin. See how to price a job or try the free Job Price Calculator. For trade-specific layouts, see the plumbing quote and roofing estimate guides.
FAQ
Can I charge more than my quote?
Only for work outside the agreed scope, ideally agreed in writing before you do it. That is why a precise scope and listed exclusions matter.
How far can the final bill differ from an estimate?
There is no fixed percentage. The final price should be reasonable and close to the estimate unless something changed that you explained to the customer.
Does the template say “quote” or “estimate”?
In the Trades Business Kit you can use the document either way and add provisional lines and exclusions.
Related guides
- Start here: Trades paperwork made simple: quotes, invoices, pricing and records (UK)
- How to price a job as a tradesperson: a simple method that protects your profit
- Builders quote template (UK): stages, provisional sums and exclusions
- Quote template for plumbers (UK): what to include and how to price it
- All guides