Quotes vs. Estimates: What is the Difference?

A quote is a promise. An estimate is a guess.

Most people use the two words like they mean the same thing. They don't — and mixing them up is how you end up doing $2,000 of free work with a smile frozen on your face.

So what exactly is a quote?

A quote is a fixed-price offer: "I will do exactly X for exactly $Y." Once the client accepts, that's a binding deal. You can't bump the price later unless the scope itself changes. Reach for a quote when the job is crystal clear, your material and labor costs are stable, or you're selling standard packages.

And an estimate?

An estimate is your honest, educated guess: "From what I can see, this should run around $Y." The final invoice can move — usually within 10–15% — as real hours and surprises shake out. Use one when you can't see the whole job yet ("we won't know until we open that wall"), when material prices swing daily, or when the project is big and sprawling.

The $2,000 mold behind the cabinets

Say you're remodeling a kitchen. You price it at $15,000.

Quoted it fixed? Then the mold you find behind the cabinets — a $2,000 fix — comes out of your pocket. You shook on $15,000.

Estimated it with a note that surprises bill extra? That same $2,000 goes on the final invoice, legitimately, and nobody feels cheated because you said so upfront.

Put it in writing either way

Whichever you send, spell out what happens when reality shifts. One sentence — "Additional work requested mid-project will be quoted separately before it begins" — turns an awkward money talk into routine paperwork. Get that line signed along with everything else, and the document handles the hard conversations for you.

Still bleeding money on fixed quotes?

That's your signal. If every "fixed" price melts into a loss, switch to estimates until your scoping gets sharper. Flip side: if clients keep hesitating because they want price certainty, tighten up your scoping process so you can offer fixed quotes with confidence. Either way, label the document correctly — in SimplyQuote you can flip between quote and estimate in one tap, and the wording on the page backs you up.