What a proforma invoice actually is
A proforma invoice is a quotation or proposed sale presented in an invoice-like format. It commonly lists the parties, goods or services, quantities, prices, delivery terms, validity period and estimated taxes or charges. In export trade it can help a buyer apply for an import license, arrange inspection, open a letter of credit or organize funds.
A proforma should be clearly labeled so it is not mistaken for the final tax invoice. HMRC, for example, says VAT cannot be reclaimed from a proforma invoice. That does not create one universal rule for contracts, customs or internal accounting: acceptance may have contractual consequences, customs may use it in some procedures, and a business may record commitments without treating it as sales revenue. Follow the rules for the actual transaction and any advance payment.
How is a proforma invoice different from a final invoice?
The difference is status and purpose, not merely appearance. A proforma describes the proposed transaction. A final invoice records the actual amount billed at the invoicing point required by the contract and tax rules, which can be tied to supply or advance payment.
| Aspect | Proforma invoice | Final or tax invoice |
|---|---|---|
| Purpose | Set out a proposed transaction | Record the actual amount invoiced |
| Timing | Usually before final invoicing | At the applicable contractual or tax invoicing point |
| Payment | Can support an advance-payment request | States the amount billed and due under the agreement |
| VAT evidence | Generally not a valid VAT invoice | Can be valid when all applicable requirements are met |
| Numbering | Use a clearly separate reference | Use the required invoice identifier or series |
| Accounting | Do not treat it as sales revenue merely because it looks like an invoice | Record under the applicable accounting and tax rules |
| Amounts | Proposed or estimated | Actual invoiced amounts, subject to lawful corrections |
- Purpose
- A proforma sets out a proposal. A final invoice records the amount billed at the applicable invoicing point.
- Tax and VAT
- A proforma is generally not the VAT evidence needed for recovery. A final invoice must still meet the applicable rules.
- Numbering
- Keep a proforma reference clearly separate from any regulated final-invoice series.
- Accounting
- Do not recognize revenue solely from a proforma; apply the accounting rule for the actual transaction.
- Amounts
- Proposed amounts can change by agreement; the final invoice records the amount actually billed.
When to use a proforma invoice
Use a proforma when the buyer needs an invoice-shaped proposal before final invoicing. It can support a formal quote, internal purchase approval, an import license, pre-shipment inspection, a letter of credit, funds transfer or an agreed advance-payment request.
For customs, ask the importer, carrier or broker whether a proforma is accepted for the specific movement. A sale normally uses a commercial invoice, while samples, replacements and other non-sale goods can follow different documentation and valuation rules.
What to put on a proforma invoice
Give the buyer enough detail to assess the proposal while making clear that it is not the final tax invoice. Use a separate proforma reference, state how long the offer remains valid, and identify estimates. FreeBillGen includes Proforma as a distinct document type in its free document generator.
- The words “Proforma invoice”
- Label the document clearly so it is not mistaken for a final tax invoice.
- Separate reference
- Use a proforma series or reference that cannot be confused with a regulated final-invoice series.
- Your details and the buyer’s details
- Full name, address and contact for both you (the seller) and the buyer.
- Description, quantity and unit price
- A clear line for each item or service, so the buyer sees exactly what is being quoted.
- Estimated amounts and charges
- Show proposed prices, freight and tax estimates clearly as estimates, without presenting the document as a tax invoice.
- A validity date
- How long the quoted prices and terms remain valid (for example, valid for 30 days).
- Payment and delivery terms
- Proposed payment method, deposit terms and expected delivery or completion, where relevant.
How a proforma becomes a real invoice
When the applicable invoicing point arrives, prepare a separate final invoice with the required identifier, dates, actual amounts and tax treatment. That point may follow delivery, arise on an advance payment or be defined another way by local tax rules.
Reference the accepted proposal when useful and preserve both versions. FreeBillGen supports Proforma and Invoice document types, but the guest generator does not convert or link them automatically.
Proforma invoice questions
Is a proforma invoice a real invoice?
It is a real business document, but generally not the final tax invoice. It sets out a proposal and can have contractual, payment or customs significance. For example, HMRC does not accept a proforma for VAT recovery. Final invoicing timing depends on supply and advance-payment rules.
Can I claim VAT back on a proforma invoice?
Under UK guidance, no: HMRC says VAT cannot be reclaimed from a proforma invoice. Other VAT systems likewise generally require a valid tax invoice, but check the applicable evidence and advance-payment rules rather than assuming one global formulation.
Does a proforma invoice need an invoice number?
Give it a clearly separate reference such as PRO-001. Do not make it look like an issued final tax invoice or consume a regulated invoice-series number unless your local system specifically requires that treatment.
What is the difference between a quote and a proforma invoice?
Both can set out a proposed price and scope. A proforma uses an invoice-like layout and is common where a buyer, bank or import process asks for that form. The legal effect comes from the wording, acceptance and governing law, not from assuming a quote is less formal.
Do I have to pay a proforma invoice?
The document alone does not answer that. A proforma can accompany an advance-payment request, and an accepted quotation or contract may create a payment obligation. Review the agreed terms; do not assume payment becomes binding only when a document titled Invoice appears.
When should I use a proforma invoice for customs?
Use one only when the destination procedure, importer, carrier or broker accepts it. It may support samples, replacements, approval goods or pre-sale import arrangements, but the movement still needs a supportable customs value and any other required declarations.