Invoice vs Proforma Invoice: What's the Difference?
Introduction
If you've ever dealt with international clients or custom orders, you've likely encountered the term "proforma invoice." But what exactly is the difference between a proforma and a regular invoice? Knowing when to use each one can save you from misunderstandings and accounting headaches.
What Is a Regular Invoice?
A standard invoice is a legally binding payment request. Once issued:
- It creates a legal obligation for the client to pay
- It must be recorded in your accounting books
- It typically triggers VAT reporting obligations
- It serves as official proof of a completed transaction
Regular invoices are issued after the work is done or the goods are delivered.
What Is a Proforma Invoice?
A proforma invoice is essentially a preliminary invoice or price quote in invoice format. It:
- Is not legally binding
- Does not create an accounting entry
- Is issued before the work is completed or goods are shipped
- Gives the client a clear picture of what they will be charged
Think of it as a formal estimate or quote that looks like an invoice but carries no legal weight.
Key Differences at a Glance
| Feature | Regular Invoice | Proforma Invoice |
|---|---|---|
| Legally binding | Yes | No |
| Creates payment obligation | Yes | No |
| Used in accounting | Yes | No |
| Triggers VAT | Yes | No |
| Issued when | After delivery | Before delivery |
When Should You Use a Proforma Invoice?
Use a proforma invoice when:
- A client needs approval before the project begins — a proforma shows them the expected cost
- Importing/exporting goods — customs authorities often require a proforma for clearance
- Requesting a deposit — some freelancers send a proforma for the initial deposit, then a regular invoice upon completion
- Quoting international clients — proformas are widely understood across borders
When Should You Use a Regular Invoice?
Use a regular invoice when:
- Work has been completed or goods delivered
- You need the document for your accounting records
- Payment is formally due
Can You Convert a Proforma to a Regular Invoice?
Yes — and this is the typical workflow. Send a proforma for approval, complete the work, then issue a proper invoice with the same details (and a new invoice number). Never reuse the proforma as your accounting invoice.
Generate Both Types Instantly
Our free tool lets you create both standard invoices and proforma invoices — just select the document type and fill in your details.