Estimate vs Quote vs Invoice: What’s the Difference for Contractors?

Estimate

Your best price for the work as you see it today. It can change if the job turns out different from what you saw. Send it before the work.

Quote

Usually a firmer price for a clearly described job. If the scope stays the same, the price stays the same. Many contractors use “estimate” and “quote” the same way — say clearly on the paper which one you mean.

Bid and proposal

A bid is a price submitted to win a job against other contractors. A proposal is a longer version that also explains how you will do the work, options and timing.

Invoice

The bill after the work (or a deposit invoice before it). It lists what was done, tax, payments already received and the balance due, with how to pay and a due date.

The simple path

1. Estimate or quote → customer approves.
2. Optional deposit invoice → work is scheduled.
3. Work is done → invoice → paid.

Questions

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