A proforma invoice is a preliminary, good-faith document a seller sends before a sale is confirmed. It sets out the expected items, quantities, prices and taxes so the buyer knows the full cost up front — but it is not a demand for payment, it does not record a completed sale, and it creates no GST liability. Think of it as a detailed, formatted quotation that looks like an invoice.
Quick answer: proforma invoice in one minute
- It is a quote in invoice form, sent before the deal closes.
- It is not legally binding and not a tax document.
- It does not trigger GST for the seller or input tax credit for the buyer.
- Common uses: quotations, advance-payment requests, imports/exports, and internal approvals.
- Once the buyer confirms and goods/services are supplied, you raise the actual tax invoice.
- Terms (price, quantity, tax) can still change before the tax invoice is issued.
Proforma invoice vs tax invoice (the core difference)
This is the distinction most people get wrong. A tax invoice is the legal record of a completed supply — it triggers your output GST and lets the buyer claim credit. A proforma comes earlier and carries none of that weight.
| Field | Why it matters |
|---|---|
| Title clearly marked "Proforma Invoice" | Prevents it being mistaken for a tax invoice or treated as a payment demand |
| Seller name, address & GSTIN | Identifies the supplier; reassures the buyer the quote is genuine |
| Buyer name & address | Establishes who the quote is for; needed for advance/customs paperwork |
| Proforma reference number & date | Lets both sides track the quote; kept separate from the tax-invoice series |
| Itemised goods/services, qty, rate | Shows exactly what is being quoted and on what basis |
| Estimated taxable value | The pre-tax figure the buyer is approving |
| Estimated GST (CGST/SGST or IGST) | Tells the buyer the full landed cost — but is not payable to govt yet |
| Validity / expiry of the quote | Protects the seller from being held to old prices |
| Payment & delivery terms | Sets advance %, timelines and dispatch expectations |
| "Not a tax invoice" note | Removes any doubt that this is a preliminary document |
Key point, often missed: Issuing a proforma does not make you liable to pay GST. Liability arises at the time of supply under the CGST Act — when the tax invoice is raised or payment/goods move, whichever the law specifies. The proforma is a pre-sale estimate only.
When do you actually need a proforma invoice?
There are four classic situations:
- Quotations. A buyer wants a formal, itemised price they can take to their boss or finance team for approval. A proforma is cleaner and more credible than a plain email quote.
- Advance payments. You need a part-payment (say 50%) before starting work or dispatching goods. The proforma justifies the advance without prematurely recording a sale.
- Imports and exports. Customs authorities and banks frequently ask for a proforma invoice to assess duty, open a letter of credit, or process foreign exchange before the shipment exists.
- Internal approvals / purchase orders. Corporate buyers raise a PO against your proforma figure. Once the PO lands and you supply, you convert it into a tax invoice.
If you are a freelancer or consultant, the proforma is often how you lock a scope and price before starting — see our guide on the freelancer invoice format. If you are not GST-registered, you can still issue a proforma; just follow the rules in billing for an unregistered business.
Sample proforma invoice (filled example)
Verma Engineering Works (Prop. Rohit Verma) — Proforma Invoice (not a tax invoice) 14 Transport Nagar, Lucknow, Uttar Pradesh 226012 · GSTIN: 09AAECL4455R1Z1 Proforma No: PI-2026-0087 · Date: 01 Jun 2026 · Valid until: 15 Jun 2026 Buyer: Awadh Fuels Retail Outlet, Kanpur, Uttar Pradesh
| Item | Qty | Rate (₹) | Amount (₹) |
|---|---|---|---|
| MS Storage Tank (5 KL) | 2 | 84,000.00 | 1,68,000.00 |
| Mounting & fabrication kit | 2 | 12,500.00 | 25,000.00 |
| On-site installation charge | 1 | 18,000.00 | 18,000.00 |
| Estimated taxable value | 2,11,000.00 | ||
| CGST @ 9% (estimated) | 18,990.00 | ||
| SGST @ 9% (estimated) | 18,990.00 | ||
| Estimated grand total | 2,48,980.00 |
Advance requested: 50% (₹1,24,490) · Balance on dispatch · Delivery: 3–4 weeks from PO. This is a proforma invoice issued for quotation/approval. A GST tax invoice will be raised at the time of supply.
Legal and compliance position in India
A proforma invoice is not one of the documents prescribed under the GST law for recording a supply. The legally recognised documents are the tax invoice, bill of supply, debit/credit note, receipt voucher and delivery challan.
- No output GST on a proforma. GST is levied at the time of supply. Issuing a proforma does not advance that point or create a liability — confirm the framework in the CGST Act on the CBIC portal(opens in new tab).
- No input tax credit for the buyer. Under the CGST Act, ITC is available only against a valid tax invoice (or a prescribed document). A buyer cannot claim credit from a proforma — see cbic-gst.gov.in(opens in new tab).
- Show estimated GST clearly as estimated. You may print the expected CGST/SGST (intra-state) or IGST (inter-state) so the buyer sees the full cost, but label it as an estimate. Rates and slabs follow the GST Council notifications(opens in new tab).
- A receipt voucher covers genuine advances. If you actually receive an advance against a future supply of services, GST law requires you to issue a receipt voucher for that money — the proforma alone is not that document.
- Keep proforma numbering separate. The strict sequential, unique numbering rule is for tax invoices feeding GSTR-1. Use a distinct "PI-" series so a proforma is never mistaken for a tax invoice.
E-E-A-T note: A proforma invoice is a legitimate, everyday business tool — there is nothing irregular about issuing one. What is not allowed is treating it as a tax invoice: you cannot file it in GSTR-1, claim credit from it, or use it to "show" a sale that has not happened. Always convert to a proper tax invoice on supply. For the wider picture, read invoice vs bill vs receipt.
How to create a proforma invoice in 2 minutes
You do not need accounting software to send a clean, professional proforma. Using the bill & invoice generator:
- Pick a blank invoice template and change the title to "Proforma Invoice".
- Enter your business details — name, address and GSTIN (saved for next time).
- Add the buyer and a proforma reference number (use your "PI-" series).
- List the quoted items with quantity and rate; the tool totals the taxable value.
- Add estimated CGST/SGST or IGST, plus advance %, validity date and a "not a tax invoice" note.
- Download a clean PDF to email or send on WhatsApp for approval.
When the buyer confirms, reuse the same details to raise the real GST tax invoice in seconds.
Online generator vs Word vs Excel
| What matters for a proforma | Online generator | MS Word | Excel |
|---|---|---|---|
| Title locked to "Proforma Invoice" | Yes One-click toggle | Partial Easy to forget | Partial Easy to forget |
| Estimated CGST/SGST/IGST auto-figured | Yes Auto from rate | No Type by hand | Partial Formula by hand |
| Keeps a separate "PI-" number series | Yes Auto-increments | No You track it | No You track it |
| Validity / expiry date on the quote | Yes Built-in field | Partial Add manually | Partial Add manually |
| "Advance %" + "not a tax invoice" note | Yes Preset blocks | No Retype each time | Partial Copy-paste |
| Convert the same quote into a tax invoice | Yes Reuse details | No Rebuild from scratch | Partial Copy-paste |
| Looks credible enough for a buyer's PO | Yes Clean PDF | Partial Depends on template | No Spreadsheet look |
Common mistakes to avoid
- Calling it just "Invoice". Always title it "Proforma Invoice" so it is never read as a payment demand or a tax invoice.
- Filing a proforma in GSTR-1. It is not a supply record — only the tax invoice goes into your returns.
- Letting the buyer claim ITC on it. Input tax credit needs a tax invoice; flag this to corporate buyers up front.
- Using your tax-invoice number series. Keep a separate "PI-" series to protect your sequential trail.
- Omitting a validity date. Without an expiry, you can be held to a stale price weeks later.
- Forgetting to convert. Once you supply, raise the actual tax invoice — the proforma does not replace it.
Sources & references
- CBIC GST Portal(opens in new tab) — CGST Act, tax invoice and input tax credit rules
- GST Council(opens in new tab) — GST rate and slab notifications
- India Code(opens in new tab) — full text of the Central Goods and Services Tax Act
Need a polished proforma to send a client today? Create a proforma invoice free → — no sign-up, instant PDF.