Proforma Invoice

A proforma invoice is a preliminary document sent by a seller to a buyer before the actual sale is completed. The term comes from the Latin phrase "pro forma" which means "for the sake of form." It looks like a regular invoice but it is not one. A proforma invoice shows estimated prices, quantities, taxes, and terms of sale, but it is not a legal demand for payment, it does not create a GST liability, and it cannot be used by the buyer to claim Input Tax Credit. Under GST law in India, there is no mention of a proforma invoice in the CGST Act or Rules. It is a business practice document, not a compliance document.

Quick reference

Also known as	Pro forma invoice, preliminary invoice, advance invoice, estimate
Issued before or after delivery	Before delivery of goods or services
Legal status	Not a legal document, not binding on either party
GST liability	No, does not create GST liability
ITC claimable by buyer	No
Recorded in books of accounts	No
Reported in GST returns	No
Can be revised or cancelled	Yes, without any compliance consequences
Must be clearly labelled	Yes, must say "Proforma Invoice" not "Invoice" or "Tax Invoice"

How a proforma invoice works

Here is how a proforma invoice flows between a seller and buyer in a typical Indian business transaction:

1. A buyer makes an enquiry. A retailer in Pune contacts a manufacturer in Ahmedabad asking for pricing on 500 units of a product before placing a formal order.

2. The seller issues a proforma invoice. The manufacturer sends a proforma invoice showing unit price, estimated GST, shipping charges, delivery timeline, and payment terms. This document is clearly labelled "Proforma Invoice."

3. The buyer reviews and confirms. The retailer uses the proforma invoice to get internal purchase approval, arrange financing, or compare with other suppliers. No payment is due at this stage and no accounting entry is made.

4. The buyer places an order. Once the retailer agrees to the terms and places a confirmed purchase order, the transaction moves forward.

5. Delivery happens and a tax invoice is raised. After the manufacturer dispatches the goods, they raise a proper GST tax invoice. Only this document creates a GST liability, demands payment, and allows the buyer to claim ITC.

Proforma invoice example for Indian businesses

Ravi runs a web design agency in Chennai. A startup in Hyderabad asks for a quote before deciding to proceed.

Ravi sends a proforma invoice showing:

• Service: Website design and development
• Estimated value: Rs. 75,000
• GST at 18%: Rs. 13,500
• Total: Rs. 88,500
• Validity: 15 days from date of issue
• Label at top: "Proforma Invoice, Not a Tax Invoice"

The startup uses this document to get sign-off from their management. Once approved, they confirm the project. Ravi then sends a 50% advance payment request, and after project completion he raises a final GST tax invoice for Rs. 88,500. The proforma invoice is never recorded in either party's books.

When to use a proforma invoice in India

A proforma invoice is useful in the following situations:

• Before a large or custom order. When a buyer wants to confirm pricing and specifications before committing, especially for bulk orders or custom manufacturing.
• To collect an advance payment. Many Indian businesses use a proforma invoice as the basis for collecting an upfront deposit before starting work. The client pays against the proforma, and the final tax invoice is issued on delivery.
• For import and export transactions. Exporters send proforma invoices to foreign buyers for customs clearance, letter of credit arrangements, and import permits. Customs authorities often require a proforma before allowing pre-shipment approvals.
• For internal purchase approvals. Corporates and government organisations need a formal quote to process a purchase order internally. A proforma invoice satisfies this requirement without creating a financial liability.
• When the final price is not yet confirmed. If the final quantity or scope may change, a proforma gives both parties a reference point without locking in a legal obligation.

Proforma invoice vs tax invoice

This is the most searched question about proforma invoices in India, and the confusion between the two causes real GST compliance problems for small businesses.

	Proforma invoice	Tax invoice
When issued	Before delivery	After delivery or at time of supply
Legal status	Not binding, not a legal document	Legally binding demand for payment
GST liability	Does not create any	Creates GST liability immediately
Recorded in books	No entry made	Full accounting entry required
Reported in GST returns	No	Yes, in GSTR-1
ITC claimable	No	Yes, by registered buyers
Can be revised	Yes, freely	Only through credit note or debit note
Mandatory label	Must say "Proforma Invoice"	Must say "Tax Invoice"

Critical warning for Indian businesses: A proforma invoice must clearly be labelled "Proforma Invoice" at the top. If it is labelled "Invoice" or "Tax Invoice" by mistake, it becomes a legal invoice under GST, creates an immediate GST liability, and must be reported in your GSTR-1. Many small businesses have triggered unnecessary GST notices simply because they used the wrong heading on what was meant to be a proforma.

What a proforma invoice should contain

There is no prescribed format for a proforma invoice under GST law. However, to be useful and professional, it should include:

• Clear heading: "Proforma Invoice" or "Pro Forma Invoice"
• Name, address, and GSTIN of the seller
• Name and address of the prospective buyer
• A unique proforma number and date of issue
• Description of goods or services with quantities and unit prices
• Estimated GST rate and amount (clearly labelled as estimated)
• Shipping charges, if applicable
• Total estimated amount payable
• Proposed payment terms
• Validity period of the proforma invoice
• A note stating it is not a tax invoice and no payment is due against this document

Common proforma invoice mistakes Indian businesses make

• Using it as a tax invoice. The most damaging mistake. If a buyer claims ITC against your proforma invoice, their ITC claim will be rejected during GSTR-2B reconciliation because no corresponding tax invoice exists in the system.

• Not labelling it clearly. Using a standard invoice template and just writing "Proforma" in a small font is not enough. The words "Proforma Invoice" must be prominent and clear at the top of the document so there is no confusion.

• Not converting it to a tax invoice after delivery. Some businesses collect payment against a proforma and never raise a proper tax invoice. This means the sale is not reported in GST returns, the buyer cannot claim ITC, and the seller is exposed to scrutiny for unreported taxable supplies.

• Treating it as legally binding. A proforma invoice is an offer, not a contract. If the buyer does not accept the terms and the deal does not proceed, the seller cannot enforce payment based on a proforma invoice alone.

• Forgetting to include a validity period. A proforma without a validity date can cause problems if prices or GST rates change between the time of the proforma and the actual order.

Frequently asked questions

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

A proforma invoice is issued before a sale and does not create any legal obligation or GST liability. A tax invoice is issued after goods are delivered or services are rendered and is a legal demand for payment. Only a tax invoice allows the buyer to claim Input Tax Credit and must be reported in GST returns. A proforma invoice is not recorded in books of accounts by either party.

Can I claim Input Tax Credit on a proforma invoice?

No. Input Tax Credit can only be claimed against a valid GST tax invoice. A proforma invoice does not qualify because it is not a tax document and no GST has been charged or paid against it. Businesses that try to claim ITC on proforma invoices will find the claim rejected during GSTR-2B reconciliation.

Does issuing a proforma invoice create GST liability?

No. A proforma invoice does not create any GST liability because it is not a tax invoice. GST liability arises only when a tax invoice is issued or payment is received for services, whichever is earlier. You do not need to report proforma invoices in GSTR-1 or GSTR-3B.

Can a proforma invoice be used to collect advance payment?

Yes, many Indian businesses collect advance payments against proforma invoices. However, once payment is received for services, GST becomes payable on the advance under Section 13 of the CGST Act, and a receipt voucher must be issued. For goods, GST is payable at the time of supply, not on receipt of advance.

Is a proforma invoice legally binding in India?

No. A proforma invoice is not a legally binding document. It is an offer or estimate that can be revised, renegotiated, or cancelled before the final sale is confirmed. Neither party is obligated to proceed based on a proforma invoice alone. A formal purchase order or acceptance by both parties is needed to create a binding obligation.

Related terms

Tax Invoice · GST Invoice · Advance Payment · Credit Note · Bill of Supply · Invoice · Receipt Voucher

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