GSTR-1 sales reporting and amendments
GST
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Monthly
GSTR-1 reports your outward supplies: the invoices and adjustments your business issued during the period. TheTaxCo prepares that report from the sales records, checks the reporting categories, resolves differences and files after your approval.
This page covers sales reporting. A complete GST cycle also needs purchase-credit reconciliation and GSTR-3B tax computation and payment review. We handle all three and follow up reporting differences. We can also work with your existing accountant, with a clear handover for the schedules they prepare.
From sales records to the return
A register containing one monthly sales total is insufficient where the return requires customer, invoice or supply-category detail. We check registered-customer invoices, consumer sales, exports, credit and debit notes, relevant advances, exempt supplies, product-code summaries and document counts. The checks depend on your transaction mix; a wholesaler and an exporter need different schedules.
Where e-invoicing applies, the reporting record must agree with the documents actually issued. We compare the invoice register with e-invoice data and identify cancelled documents, duplicates and missed amendments. An auto-populated entry still needs review against the underlying transaction.
The completed working shows which register feeds each return table and which differences remain unresolved. Your approval covers the exceptions as well as the totals. That record helps answer a customer who later asks why an invoice appeared in a different period or under an incorrect GSTIN.
Monthly and quarterly reporting
Normal taxpayers may file monthly or, where eligible and opted in, under the Quarterly Return Monthly Payment scheme. QRMP generally covers taxpayers with aggregate turnover up to ₹5 crore in the current and preceding financial year who meet the filing conditions. Quarterly GSTR-1 is generally due on the 13th after the quarter; monthly GSTR-1 generally falls due on the 11th of the following month. Specific extensions take precedence. GST Portal QRMP guidance and GSTR-1A FAQ.
QRMP does not remove the monthly payment review. The optional Invoice Furnishing Facility lets specified business-to-business documents reach customers during the first two months of the quarter. We agree whether to use it after looking at customer needs and the quality of monthly records.
Correcting a filed sales report
GSTR-1A provides an optional same-period correction window before the corresponding GSTR-3B is filed. It can be filed only once for that period, and its permitted changes have limits. For example, the portal FAQ directs a recipient-GSTIN correction through a subsequent GSTR-1. We select the correction route from the error rather than treating GSTR-1A as a general revision button. GST Portal GSTR-1A FAQ.
Earlier-period errors need their own reporting and time-limit review. A credit note, a cancelled invoice and a wrong customer number can require different actions. We keep a correction schedule so that an item is neither omitted nor reported twice.
Your monthly handover and outputs
Send the sales register, issued invoices and notes, relevant advance receipts, customer and product masters, and any e-invoice export. We also need the previous filing record and unresolved differences. If your books are unfinished, we identify the missing transactions and agree how to complete the reporting data before filing.
You receive return-table workings, a draft for approval, the submission acknowledgement when filed, and a correction list with the next action for each item. These figures then feed our GSTR-3B review. If your accountant prepares that return, we deliver the reviewed sales schedule to them.
The document cut-off and preparation date are agreed from transaction volume, branches, platforms and past corrections. Catch-up periods and reconstruction of incomplete sales records need additional preparation time.
Questions about quiet months and customer credit
We made no sales. Do we still file GSTR-1? A normal taxpayer required to furnish GSTR-1 still needs the appropriate nil statement when there are no reportable outward supplies. Check amendments and other reportable items before selecting nil. This is separate from deciding whether GSTR-3B is nil. GST Portal nil GSTR-1 guidance.
Does filing GSTR-1 guarantee my customer’s credit? It supplies reporting data the customer needs. Their claim also depends on their own records and the credit conditions. We can check and correct your reporting, but cannot approve their claim for them.
Can my accountant keep issuing invoices? Yes. We agree the export format, reporting cut-off and responsibility for correcting invoice masters. Your day-to-day billing can continue while we prepare the period’s return.
See e-invoice and dispatch documentation for transaction-level controls and GST annual returns for year-end reconciliation.
Email TheTaxCo, message us on WhatsApp or book a call. Share the number of GST registrations, filing frequency, approximate monthly invoice count and latest filed period.