Invoicing guides
Plain-language answers to the questions that come up when you invoice, from the basics to GST in India.
Invoicing basics
- What to include on an invoiceThe fields that belong on every invoice, the ones worth adding, and a final check before you send.
- How to write an invoiceThe process end to end, a numbering scheme that lasts, and how to handle a late payment.
- Invoice vs estimate vs quoteThe real difference between an estimate, quote, invoice and proforma, and when to send each.
- What does Net 30 meanHow Net 30 works, other common payment terms, early-payment discounts and late-payment clauses.
India and GST
- How to make a GST invoiceWhat to gather before you start, how to build the invoice, and how UPI payment details can be added.
- GST invoice formatThe main Rule 46 particulars, invoice-number rules, and the difference between a tax invoice and a bill of supply.
- CGST, SGST and IGSTHow place of supply determines whether GST is split into CGST and SGST or charged as IGST.
- HSN and SAC codesWhat HSN and SAC codes mean, how digit requirements work, and where to verify a code.
Invoicing Studio helps you format invoices and does not constitute tax or legal advice. Check your local requirements before sending.