Sales

Sales Invoice / Bill

A document issued to a buyer recording a sale transaction

Definition

A sales invoice, commonly called a bill, is a formal document issued by a seller to a buyer at the time of a sale. It contains details such as the seller's and buyer's name and address, GSTIN, invoice number, date, item description, quantity, rate, taxable value, GST amount (CGST, SGST, or IGST), and the total amount payable. Under GST law in India, every registered business must issue a tax invoice for the supply of goods or services. The sales invoice serves as legal proof of the transaction, is required for the buyer to claim Input Tax Credit (ITC), and forms the basis of your sales records, GST returns, and profit calculations. Maintaining accurate sales invoices is critical for GST compliance and helps avoid penalties during audits.

How It Works

  1. 1When you make a sale, you create an invoice listing all items sold with their quantities, rates, and applicable GST.
  2. 2The invoice is assigned a unique sequential number and records both your business details and the buyer's details.
  3. 3For B2B sales, the buyer's GSTIN is mandatory so they can claim ITC.
  4. 4The invoice data feeds into your sales register, reduces stock automatically, updates your accounts receivable if on credit, and forms the basis for GSTR-1 filing.

Example

You own a stationery shop in Jaipur and sell 50 notebooks at Rs. 40 each to a local school. You issue a sales invoice showing: Subtotal = Rs. 2,000, CGST @6% = Rs. 120, SGST @6% = Rs. 120, Grand Total = Rs. 2,240. This invoice is recorded in your sales register and is reported in your GSTR-1 filing.

How Stock Register Handles This

  • Create GST-compliant invoices in under a minute with auto-filled HSN codes, tax rates, and party details
  • Stock is automatically deducted upon invoicing — no separate stock entry needed
  • Convert quotations or sales orders into invoices with one click, carrying over all item and party details
Learn more about GST Invoicing →

Related Terms

Purchase Invoice / Purchase BillCredit Note / Sales ReturnGST (Goods and Services Tax)GSTR-1E-Invoice

Related Guides

Create Sales Invoice

Frequently Asked Questions

What details are mandatory on a GST sales invoice?

A GST invoice must include: your business name, address, and GSTIN; the invoice number (unique, sequential) and date; buyer's name, address, and GSTIN (for B2B); item description with HSN/SAC code; quantity and unit; taxable value; GST rate and amount (CGST+SGST or IGST); total amount; and place of supply. For invoices above Rs. 50,000, the buyer's name and address are mandatory even for B2C sales.

What is the difference between a sales invoice and a bill?

In common Indian business practice, a sales invoice and a bill refer to the same document. Technically, a 'tax invoice' is issued by GST-registered businesses with all GST details, while a 'bill of supply' is issued by composition scheme dealers or for exempt goods. Retail shops often call it a 'bill' while formal B2B transactions use 'tax invoice'.

Can I issue a sales invoice without GST?

Yes, if you are selling GST-exempt goods (like fresh fruits, vegetables, unbranded grains) or if you are under the composition scheme, you issue a 'Bill of Supply' instead of a tax invoice. This does not include GST breakup. Also, exports are zero-rated under GST — you issue an invoice with 0% GST or charge IGST and claim a refund.

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