Every table on the GST portal, populated automatically from your books.
B2B, B2C-Large, B2C-Small, exports (with and without payment of tax), credit / debit notes, advances received, HSN summary, and the document-issued table — every section populated from your sales register.
Sign in once with your GSTN credentials. File GSTR-1 directly from ReadyBooks.ai with one click. Filing acknowledgement + ARN saved automatically.
Prefer offline filing? Generate a JSON in the GST portal schema and upload it via the offline utility. Same validation, same data, same outcome.
Every invoice is validated against GSTIN format (check-sum, state code, PAN consistency) and place-of-supply rules before it reaches the return. Reject errors at entry, not at filing.
Edit a prior-period invoice and the change routes to the right amendment table automatically. No filing a fresh GSTR-1, no manual rework of the JSON.
HSN table aggregated automatically from your item master. Items missing an HSN code are flagged before generation. Latest CBIC digit-count rules enforced based on your turnover.
Built for the exact GSTR-1 workflow Indian CAs run.
GSTR-1 generates directly from your sales register. Stop building monthly Excel templates and pasting data into the GST offline utility.
Filing GSTR-1 on time means your buyers can see and claim their ITC immediately in GSTR-2B. Late or wrong GSTR-1 = unhappy buyers and disputed credits.
Quarterly filers get IFF in months 1 and 2 of the quarter so buyer ITC is not blocked. Monthly tax payments via PMT-06 are tracked in the same workflow.
Multi-client dashboard for CA firms. File GSTR-1 across 20+ clients in a single afternoon, with separate audit trails per client.
GSTR-1 is the source-of-truth return for outward supplies under the CGST Act. The data you file here auto-populates your buyers GSTR-2A and GSTR-2B, which determines whether they can claim input tax credit. Get GSTR-1 right and the rest of the GST cycle follows; get it wrong and you create disputes with every buyer.
ReadyBooks.ai treats GSTR-1 as a first-class citizen in the product, not as an after-thought reporting feature. Every invoice you raise is validated against the GST schema at entry; every credit note is routed to the right CDNR / CDNUR table; every place-of-supply mismatch is caught before it reaches the JSON. Your monthly close stops being a panicked spreadsheet exercise.
The GSTR-1 module reads directly from your sales register. The moment you raise a sales invoice, debit note, or credit note in ReadyBooks.ai, it is tagged against the GSTR-1 table it belongs to based on buyer registration status, invoice value, place of supply, and document type. By the time the 10th of the month arrives, the return is already 95% built — you are reviewing, not assembling.
On the 1st of the following month a draft GSTR-1 is auto-generated and surfaces on your filing dashboard with the count of invoices in each section, total taxable value, total CGST, SGST, and IGST, and any validation warnings (missing HSN, invalid GSTIN, place-of-supply inconsistencies). You review, fix any flagged invoices, and approve. Then either click "File via GSTN" for direct API filing or "Download JSON" for offline filing through the GST portal.
Once filed, the ARN (Acknowledgement Reference Number) and filing timestamp are saved against the return. The next month, when your buyers GSTR-2A is published by GSTN, ReadyBooks.ai pulls the data and shows you the buyer-side reconciliation in case any of your invoices did not flow through — useful for catching portal-side errors before your buyer asks why their ITC is missing.
Monthly filers (aggregate turnover above ₹5 crore) file GSTR-1 by the 11th of every month, and GSTR-3B by the 20th. The two returns must reconcile — your outward supplies as reported in GSTR-1 must match the outward supplies you report in GSTR-3B Section 3.1. ReadyBooks.ai auto-populates 3B from the same data it used for GSTR-1, so the reconciliation is automatic.
Quarterly filers under QRMP (aggregate turnover up to ₹5 crore) file GSTR-1 quarterly — by the 13th of the month following the quarter. But they pay tax monthly via PMT-06 by the 25th of each month, and file GSTR-3B quarterly (22nd or 24th depending on state). To prevent buyers from waiting three months for their ITC, IFF (Invoice Furnishing Facility) lets quarterly filers furnish their B2B invoices in months 1 and 2 of the quarter. ReadyBooks.ai handles the IFF flow automatically — invoices flow from your books to IFF in months 1 and 2, and to GSTR-1 in month 3.
GSTR-1A is a recent addition (2024) that lets you amend an in-month GSTR-1 before filing GSTR-3B. ReadyBooks.ai supports the 1A flow so you can correct mistakes spotted between GSTR-1 generation and GSTR-3B filing without waiting for the next month's amendment tables.
Wrong place of supply on a B2B invoice — a common cause of disputes where the buyer's ITC is denied because of intra-state vs inter-state mismatch. ReadyBooks.ai compares your business state, buyer state, and place of supply at entry and rejects the invoice if the combination is invalid.
Invoices issued to an unregistered buyer above the ₹2.5 lakh inter-state threshold reported under B2CS instead of B2C-Large. ReadyBooks.ai routes these automatically based on invoice value, buyer registration, and inter-state vs intra-state.
HSN summary not matching invoice-level HSN — typically caused by items without an HSN code or by manually fixed HSNs that diverge from the item master. The system warns you of any item missing an HSN before generation and reconciles invoice-level HSN against the summary table.
Credit notes routed to the wrong table — CDNR is for registered buyers, CDNUR for unregistered. Manual filers often mix them up. ReadyBooks.ai picks the right table from the buyer's GSTIN status at the time the credit note was issued.
Bulk GSTR-1 dashboard shows the status of all 25 clients on one screen. File the ones that are validated with two clicks each; flag the ones with warnings for client review. Average time per client drops from 40 minutes to under 8.
Export invoices (with LUT or with IGST) auto-flow to the right table. Domestic B2B and B2CS are populated from the same sales register. HSN summary picks up textile codes correctly. Filing happens in one pass.
IFF flow is automatic — B2B invoices flow to the portal in months 1 and 2 so buyer GSTR-2B picks them up the same month. Quarterly GSTR-1 only consolidates the rest. Complaints stop.