What is the difference between an estimate and a quote?

An estimate is an approximate, non-binding figure that can change as the scope becomes clear, with the client carrying the risk of overruns. A quote is a fixed price the contractor commits to for a defined scope, with the contractor carrying that risk. The key difference is who absorbs the cost if the job runs over.

Is a quote legally binding for a contractor?

Generally, once a client accepts a written quote for a defined scope, it forms a binding agreement on price for that scope — you cannot raise it just because the job took longer. An estimate is not binding in the same way. This is why you should always label clearly, in writing, which one you are providing.

Should I give a customer an estimate or a quote?

Give a quote when you can see the full scope and price it confidently — clients prefer the certainty and it wins work. Give an estimate when real unknowns exist, such as work behind a wall, and state clearly that the final figure may change and why. Never let a casual estimate be mistaken for a firm quote.

Estimate vs Quote: What's the Difference?

The core difference

The words get used interchangeably in conversation, but legally and practically they mean different things — and the difference is who carries the risk if the job costs more than expected.

An estimate is your best informed guess at what a job will cost before all the variables are known. It is not binding. If you open the wall and find the wiring is worse than expected, the final figure can rise. The client carries the risk of overruns.

A quote (sometimes "fixed quote" or "firm bid") is a committed price for a clearly defined scope of work. Once the client accepts it, that is the price — even if the job takes you longer than you thought. You carry the risk of overruns.

That single distinction — who absorbs the surprise — is why you must be clear about which one you are giving.

When to use each

The right choice depends on how well you can see the scope before you start.

Use an estimate when the scope is genuinely uncertain. Diagnostic work, anything behind a wall or under a floor, older properties where you cannot see what you are dealing with. Give a range, label it clearly as an estimate, and explain what could move the number. This protects you from eating costs you could not have foreseen.

Use a quote when the work is well defined. Installing a known fixture, a panel upgrade you have done a hundred times, a job you can scope fully on the walkthrough. A firm quote is more professional, easier for the client to say yes to, and it wins work — clients prefer certainty.

The risk lives in the grey area: giving a casual "it'll be about two grand" that the client hears as a firm quote. When you come in at $2,400 because the job was bigger than it looked, you are now in a dispute. Always put in writing which one it is. For how to build either, see How to Write a Contractor Estimate and How to Price a Job as a Contractor.

Protecting your margin either way

Whichever you give, two habits protect your margin. First, define the scope in writing so everyone agrees what is included — this is what makes a change in scope a change order rather than an argument. Second, base the number on real prices, not memory, so a "fixed" quote is fixed at a profitable level.

Fieldpaid builds quotes from your live QuickBooks item-list prices in under a minute on site, so the number you commit to is grounded in current costs — and converts to an invoice in one tap when the job is done.

Estimate vs Quote: The Difference Every Contractor Should Know