Quote vs Invoice: What's the Difference?
In this guide
What is a Quote?
A quote (or quotation) is a document you send to a potential client before work begins. It outlines the scope of work and the price you propose to charge.
Quotes typically include:
- Your business details
- The client's details
- A description of the goods or services
- Pricing (with or without tax)
- Validity period (e.g., "valid for 30 days")
- Terms and conditions
Use quotes to set clear expectations with clients before starting any work. This reduces disputes about pricing later.
What is an Invoice?
An invoice is a formal request for payment sent after goods have been delivered or services have been completed. It creates a legal record of the transaction.
Invoices typically include everything a quote includes, plus:
- A unique invoice number
- The invoice date
- Payment due date
- Payment instructions (bank details, payment terms)
Key Differences
Here's a side-by-side comparison of quotes and invoices.
| Quote | Invoice | |
|---|---|---|
| When sent | Before work begins | After work is completed |
| Purpose | Estimate pricing | Request payment |
| Legally binding | Usually not | Yes — creates a payment obligation |
| Includes payment terms | Sometimes | Always |
| Unique numbering | Optional | Required |
When to Use Each
Send a quote when:
- A client asks for a price estimate
- You're pitching for new work
- The scope or pricing needs agreement before starting
Send an invoice when:
- Work is complete and payment is due
- You've delivered goods to a customer
- You need to create a formal record for accounting
Ready to send an invoice? Use our free generator.
Create your invoice nowCan You Convert a Quote to an Invoice?
Yes — and it's common practice. Once a client accepts your quote, you can use the same details to generate an invoice. This keeps pricing consistent and saves time.
Best Practice
Always reference the original quote number on your invoice so the client can easily match the two documents.
Frequently Asked Questions
Can a quote become an invoice?
Yes. Once a client accepts a quote, you can convert it into an invoice. Many businesses use the same line items from the accepted quote to generate the final invoice.
Is a quote legally binding?
Generally, a quote is not legally binding unless explicitly stated. However, once accepted by the client, it may form the basis of a contract depending on the terms.
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