Proforma Invoice: What It Is, When to Use It + Free Template (2026)

A client asks for a "proforma invoice" and you freeze. Is it the same as a quote? Do they pay it? Does it count for tax? Can you just send a normal invoice instead? If you have ever hesitated over that request, you are not alone — the proforma invoice is one of the most misunderstood documents in small business billing.

The confusion matters, because sending the wrong document at the wrong moment causes real problems: customs can hold a shipment, a client can refuse to release an advance payment, or your accountant can flag a "sale" that never actually happened. Getting this right makes you look organized and keeps your books clean.

This guide explains exactly what a proforma invoice is, how it differs from a quote and a commercial invoice, when you should send one, what to put on it, and how tax works. At the end you will find a free proforma invoice template you can copy and use today.

What Is a Proforma Invoice?

A proforma invoice is a preliminary bill of sale sent to a buyer before the goods are delivered or the work is completed. It shows the buyer exactly what they will be charged — line items, quantities, prices, taxes, and the total — so they can approve the purchase, arrange payment, or clear customs, all before a final, legally binding invoice is issued.

The Latin phrase pro forma means "as a matter of form." That is the whole idea: a proforma invoice looks like a real invoice and contains almost the same information, but it is a formality issued in advance rather than a demand for payment recorded in your accounts.

The single most important thing to understand is this: a proforma invoice is not a real (commercial) invoice. It does not create an account receivable, it does not go into your sales ledger, and in most countries it cannot be used by the buyer to reclaim VAT or GST. It is a good-faith estimate presented in invoice format. Only the final commercial invoice — issued once the deal is confirmed — has accounting and tax weight.

Proforma Invoice vs Quote vs Commercial Invoice

These three documents form a natural sequence in a sale, but they are not interchangeable. Sending the wrong one signals the wrong stage of the deal.

The short version: a quote says "here is what it would cost", a proforma invoice says "here is what you have agreed to pay, ready for you to act on", and a commercial invoice says "the work is done — please pay this now."

When Should You Send a Proforma Invoice?

There are six situations where a proforma invoice is the right document.

1. Requesting an advance or deposit payment

When you need payment before you start — a deposit on a project, a booking fee, or full prepayment for a product — a proforma invoice lets the client pay against a formal document without you having to record a sale that has not happened yet. Once they pay, you issue the real invoice.

2. International shipping and customs

This is the classic use. Customs authorities require a proforma invoice to assess duties and taxes on goods that have not yet been sold or fully priced — samples, replacement parts, goods sent for repair, or shipments awaiting a final commercial invoice. Without it, your shipment can be held at the border.

3. Onboarding a new client

With a first-time client you may want written confirmation of the exact scope, price, and terms before any money or work changes hands. A proforma invoice is more formal and specific than a quote, which reassures both sides.

4. Securing internal approval or a purchase order

Corporate and government buyers often cannot release funds until they have a document that looks like an invoice to attach to a purchase order or budget approval. A proforma gives their finance team something concrete to sign off — without you booking a premature sale.

5. Proof of cost for grants, visas, or financing

Applicants sometimes need to demonstrate a committed cost — for a grant, a visa application, an equipment loan, or expense pre-approval. A proforma invoice provides that evidence without the tax consequences of a real invoice.

6. Confirming price and terms on a bespoke order

For custom or variable orders where the final total depends on specifications, a proforma locks in the agreed figures so there are no surprises when the commercial invoice arrives.

What to Include on a Proforma Invoice

A proforma invoice should contain nearly everything a final invoice does. The two differences that matter: it must be clearly labelled "Proforma Invoice", and it should never carry a commercial invoice number.

• The label "Proforma Invoice" — prominently, so no one mistakes it for a tax invoice
• A unique proforma reference — separate from your invoice sequence (e.g. PF-2026-001)
• Issue date and a validity/expiry date — prices should not be open-ended
• Your business details — name, address, contact, and tax number if applicable
• The buyer's details — name, address, and their tax number for cross-border sales
• A clear line-item breakdown — description, quantity, unit price, and line total
• Subtotal, tax, and grand total — show VAT/GST rates even though it is not yet a tax document
• Payment terms and methods — how and by when you expect to be paid once confirmed
• Delivery terms — for goods, include Incoterms, weight, and country of origin for customs
• A note that it is not a demand for payment — a short line such as "This is a proforma invoice and does not constitute a tax invoice"

How VAT and Tax Work on a Proforma Invoice

This is where most mistakes happen, so it is worth being precise.

A proforma invoice shows tax so the buyer can see the full expected cost, but it does not charge tax in an accounting sense. Because a proforma is not a valid tax invoice, the buyer generally cannot reclaim input VAT or GST using it, and you do not report any output tax based on it. The taxable event happens when you issue the final commercial invoice.

The practical workflow is simple: issue the proforma, receive confirmation or payment, then immediately issue a proper commercial invoice that becomes the official tax document. If a client pays against a proforma, the final invoice you issue afterwards is what they file for their VAT return — so it must reference the same amounts.

Free Proforma Invoice Template

Copy the structure below, replace the bracketed fields, and you have a valid proforma invoice. Keep the "PROFORMA INVOICE" heading and the "not a tax invoice" note — those two lines are what make it a proforma rather than a bill.

                        PROFORMA INVOICE

[Your Business Name]                    Proforma No: PF-2026-001
[Address, City, Postcode]               Date issued: [DD/MM/YYYY]
[Email · Phone]                         Valid until: [DD/MM/YYYY]
[Tax / VAT number]

BILL TO:
[Client Name]
[Client Address]
[Client Tax / VAT number — for cross-border sales]

-------------------------------------------------------------------
Description               Qty     Unit Price      Line Total
-------------------------------------------------------------------
[Item or service 1]        2        100.00          200.00
[Item or service 2]        1        150.00          150.00
-------------------------------------------------------------------
                                     Subtotal:       350.00
                                     VAT (20%):        70.00
                                     TOTAL:           420.00
-------------------------------------------------------------------

Payment terms: [e.g. 100% advance / 50% deposit, due within 7 days]
Payment method: [Bank transfer / card — include details]
Delivery terms: [Incoterms, weight, country of origin — if goods]

This is a proforma invoice. It is not a tax invoice and does not
constitute a demand for payment. A commercial invoice will be issued
upon confirmation.

How to Create a Proforma Invoice in KipBill

Building proformas by hand in a document editor works once or twice, but it gets error-prone fast — mismatched totals, missing tax lines, and inconsistent branding. KipBill removes the manual work.

Start from a quote or an invoice. Draft the document with your line items, and KipBill calculates subtotals, tax, and totals automatically — no spreadsheet math.

Separate numbering. KipBill keeps quotes, invoices, and credit notes on their own reference sequences, so your official invoice numbering stays clean and audit-safe.

Consistent branding. Every document uses your logo, colours, and layout, so a proforma looks as professional as your final invoice.

One-click conversion. When the client confirms, convert the document into a proper commercial invoice in a single click — the same line items, now as your official tax document. No re-typing, no mismatched amounts.

Send and track. Email the PDF directly to your client and see when it was delivered and opened, so you know exactly where the deal stands.

Frequently Asked Questions

Is a proforma invoice legally binding?

No. A proforma invoice is not a legally binding demand for payment and does not create a debt. It reflects the terms both parties have agreed, but the legal obligation to pay arises only when you issue the final commercial invoice. It sits between a quote (an offer) and an invoice (a demand).

Does a proforma invoice require payment?

Not on its own. A proforma tells the buyer what they will owe and how to pay, and is often used to request an advance — but it is not itself an enforceable demand. Many businesses do collect payment against a proforma; when they do, they immediately issue a commercial invoice afterwards as the official record.

Can you reclaim VAT on a proforma invoice?

No. In the EU, UK, and most jurisdictions a proforma is not a valid VAT invoice, so the buyer cannot use it to reclaim input VAT or GST. Only the final commercial invoice supports a tax reclaim. This is the main reason you must issue a proper invoice once the sale is confirmed.

What is the difference between a proforma invoice and a quote?

A quote is an offer sent while the client is still deciding, and its terms can be negotiated. A proforma invoice is sent after the deal is essentially agreed and presents the confirmed figures in invoice format, ready for the buyer to pay, clear customs, or obtain internal approval. A proforma is more formal and more final than a quote.

Can a proforma invoice be converted into a commercial invoice?

Yes — and it should be. Once the buyer confirms or pays, you issue a commercial invoice with the same line items and amounts. That final invoice becomes the legal, tax-relevant document. In KipBill this is a one-click conversion, so the figures always match.

How long is a proforma invoice valid?

A proforma should include a validity or expiry date, because prices, availability, and exchange rates change. Common practice is 7 to 30 days. After it expires, issue an updated proforma rather than honouring stale figures.

Do I need a proforma invoice for international shipping?

Usually yes. Customs authorities typically require a proforma invoice to assess duties on goods that do not yet have a final commercial invoice — such as samples, replacements, or goods sent for repair. Include Incoterms, weight, and country of origin so customs can process the shipment.

Can I just send a regular invoice instead of a proforma?

Only if the sale is genuinely complete and you intend it to be a legal demand for payment recorded in your accounts. If you are asking for an advance, confirming terms with a new client, or clearing customs before the sale is final, a proforma is the correct — and cleaner — choice, because it keeps a premature sale out of your books.

Conclusion

A proforma invoice is simple once you see where it fits: it is the bridge between agreeing on a price and getting paid. Use it to request advances, clear customs, reassure new clients, and secure approvals — then always follow it with a proper commercial invoice that carries the tax and accounting weight.

Remember the three rules: label it clearly as a proforma, keep it off your official invoice numbering, and convert it into a real invoice the moment the sale is confirmed. Do that and you will never again hesitate when a client asks for one.

If you would rather skip the manual formatting, KipBill creates proformas, converts them to commercial invoices in one click, and keeps every document on the right numbering sequence with your branding. Pair it with our free invoice templates and guide to invoicing international clients to run your whole billing workflow in one place.