The term "proforma invoice" gets used loosely — sometimes to mean a quote, sometimes a deposit request, sometimes something else entirely. Here is a precise definition, the legitimate use cases, and how to issue one correctly.
What is a proforma invoice?
A proforma invoice is a preliminary document that looks like an invoice but is not a legally binding demand for payment and has no accounting or tax effect. The Latin "pro forma" means "as a matter of form" — it is a document issued for informational or procedural purposes, not to record a completed transaction.
The key distinction: a real invoice records a sale that has taken place. A proforma invoice describes a sale that is proposed or pending.
When should you issue a proforma invoice?
Before the work begins — to confirm the terms
You want to give a client a formal document showing exactly what they will be paying before they commit. It looks like an invoice, carries your branding, and sets out the line items, amounts, and payment terms. The client approves it, then work begins and the real invoice follows on completion.
This is the most common use for freelancers and consultants, and it overlaps closely with a detailed quote. The difference is presentation: a proforma looks like an invoice (same format, same fields) rather than a proposal.
For customs and import/export
In international trade, customs authorities often require a proforma invoice to assess duties before the commercial invoice is raised. The proforma shows the goods, their declared value, and the country of origin — allowing the buyer to obtain import licences or pre-pay duties. See our guide on invoicing international clients for related considerations.
To request a deposit
Some businesses use a proforma invoice to request an upfront payment before committing to a job. The logic: issue a proforma to trigger the deposit transfer, then issue the real invoice once the full transaction is complete.
This works in practice, but note that a true deposit (advance) invoice — a real invoice issued for the deposit amount — is more transparent and has full legal standing. Many accountants prefer a proper deposit invoice over a proforma for cash flow and VAT recording purposes.
For internal budgeting
A client's finance department may need a proforma before raising a purchase order. You issue the proforma; they approve the spend internally; you then get the PO and issue the real invoice.
What a proforma invoice must include
There is no mandatory legal format for a proforma invoice in most jurisdictions — it is not a tax document. That said, it should clearly include:
| Field | Detail | |---|---| | Document title | "Proforma Invoice" — this label is critical to distinguish it from a real invoice | | Your details | Name, address, contact details | | Client details | Name, address | | Reference number | Your own proforma numbering series (e.g. PRO-2026-001) | | Date of issue | Date the proforma is created | | Line items | Description, quantity, unit rate — exactly as the real invoice will show | | Net amount, VAT, total | Showing the anticipated amounts | | Payment terms | When and how payment will be due on the final invoice | | Validity period | How long the prices and terms quoted are valid (e.g. "valid for 30 days") |
Critical: the proforma must be clearly labelled as such. If it looks identical to a real invoice with no distinguishing label, your client's accounting team may book it as a payable, you may receive unexpected payment, and VAT complications can follow.
Does a proforma invoice affect VAT or accounts?
No. A proforma invoice has no accounting effect and no VAT consequences until it is replaced by a real invoice. It does not:
- Create a taxable supply or VAT point
- Record revenue in your accounts
- Constitute a legal demand for payment
The moment you issue a real invoice for the same transaction, the proforma becomes void. Do not record proforma invoices in your sales ledger.
For UK businesses, HMRC is explicit: a proforma invoice is not a VAT invoice. Only a full VAT invoice triggers the VAT accounting point. See our UK VAT guide for detail on VAT invoice requirements.
Proforma invoice vs quote: what is the difference?
| | Proforma invoice | Quote | |---|---|---| | Format | Invoice-like (structured, formal) | Proposal-like (may include scope, rationale) | | Purpose | Confirm exact terms before invoicing | Offer a price for consideration | | Legal standing | None (informational only) | Binding if accepted (depending on jurisdiction) | | VAT | Not a VAT document | Not a VAT document | | Common use | Import/export, deposit requests, budget approvals | New business proposals, project scoping |
In practice, for freelancers working with European clients, a proforma invoice and a detailed quote serve very similar purposes. Use whichever label your client's procurement process expects.
Proforma invoice vs deposit invoice
A deposit invoice is a real invoice issued for part of the total — typically 30–50% upfront. It has full legal and tax standing: it records a real payment received, triggers a VAT point, and appears in your accounts.
A proforma used to "request a deposit" is technically less rigorous — it does not create an accounting record of the advance. For anything beyond a casual relationship, issue a proper deposit invoice for the advance payment, followed by a final invoice deducting the deposit already paid. Our payment terms guide covers structuring deposit workflows in detail.
Issuing a proforma invoice with Invoice Creator
Invoice Creator lets you generate a proforma invoice using any of the available invoice templates — simply label the document "Proforma Invoice" and it is ready to download as a PDF in minutes. When the work is complete, create the final invoice from the same details. No account, no subscription.
For freelancers who regularly need both proformas and final invoices for the same project, keeping a consistent document format across both eliminates confusion for your clients' finance teams.