Credit note software built for Indian GST

A credit note is issued by a seller to a buyer to reduce the value of a tax invoice already raised — for a sales return, a post-sale discount, a rate or quantity correction, or a deficient supply. It reverses the output GST the seller had charged. A debit note works the other way: it increases the value of a document, typically when a supplier under-charged or when a buyer raises a claim against a purchase. In ReadyBooks the seller-side documents are credit notes and customer debit notes against a sales invoice, and the buyer-side documents are debit notes and vendor credit notes against a purchase bill. Each carries CGST, SGST, and IGST per line so the tax adjustment is exact, not a lump-sum estimate.

Yes. A credit note is created against its parent sales invoice and, line for line, against the original invoice lines it adjusts. The same applies to sales returns, debit notes against a purchase bill, customer debit notes, and vendor credit notes. That parent link is what lets ReadyBooks carry over the correct GST rate, place of supply, and HSN, value a sales return at the original cost, and keep the relationship visible for audit. You are never re-keying tax figures or guessing which invoice a note belongs to.

Every credit note line carries its own CGST, SGST, and IGST split — the same intra-state versus inter-state logic as the original invoice. When you post the note, ReadyBooks writes a journal entry that reverses the output GST you had charged: it debits the CGST / SGST / IGST payable accounts for the tax portion and reduces the sale and the party balance for the rest. Because the tax is reversed per line at the original rate, the adjustment ties out exactly against the invoice it corrects rather than being approximated as one figure.

They are related but distinct, and ReadyBooks keeps both. A sales return records the physical goods coming back — it links to the original invoice, restocks the returned quantity into inventory at the original sale cost, and recomputes weighted-average cost. A credit note is the financial and GST document that reduces what the customer owes and reverses the output tax. Many businesses raise a sales return for the stock movement and a credit note for the money and GST; both exist as first-class documents so you can model your own workflow rather than forcing one document to do both jobs.

Yes. Outward credit notes feed the CDNR table of GSTR-1 for registered customers and the CDNUR table for unregistered ones, and customer debit notes raised against a sales invoice feed the outward debit-note tables. The note number, date, the invoice it adjusts, the taxable value, and the CGST / SGST / IGST split all carry through from the document you raised — so the credit and debit notes you issue during the month appear in the right GSTR-1 tables automatically instead of being re-typed at filing time.

When you return goods to a supplier or raise a claim against a purchase, you create a debit note against the original purchase bill. It carries the CGST / SGST / IGST per line so the input-tax-credit (ITC) you had claimed is reduced by the correct amount, and it reduces the supplier balance you owe. ReadyBooks also supports vendor credit notes — the document a supplier issues to you — so both sides of a purchase adjustment are recorded against the right bill. Each note is linked to its parent purchase bill for a clean audit trail.

A note starts as a draft you can edit freely. When you finalise it, it moves to sent, and posting it writes the journal entry that adjusts the ledger, the party balance, and — for sales returns — the stock. Sales returns can also be converted, and once a credit note is posted or applied to an invoice it is locked from casual edits to protect the books. The point of the lifecycle is that nothing touches your ledger or GST position until you explicitly finalise the document, so drafts never leak into your filings.

Yes. A posted credit note reduces the customer’s outstanding balance, so the next time you collect from that party the open amount already reflects the credit. Because the credit note carries its own GST reversal and links to the original invoice, applying it keeps the receivables ledger, the GST output position, and the customer statement consistent — you are not netting an amount off informally and losing the tax trail.

The credit note carries the fields a GST credit note needs — a unique note number, the date, the original invoice reference, the taxable value, and the CGST / SGST / IGST breakup at the original rate, alongside the supplier and recipient details ReadyBooks already holds. Because the note is generated from the linked invoice, the place-of-supply and HSN data come through correctly rather than being entered by hand. You issue a compliant document and the same data feeds your GSTR-1, instead of maintaining a separate template in a spreadsheet.

They are part of one connected ledger, not a separate register. A credit note reverses output GST and reduces receivables; a sales return restocks inventory and recomputes weighted-average cost; a vendor debit note reverses ITC and reduces payables. Each posts its own double-entry journal automatically, links to its parent invoice or bill, and surfaces in the GST returns. So adjusting a sale or a purchase keeps your books, your stock, and your GST filings in step in a single action — the same engine that powers invoicing, purchases, and GST compliance.