GSTR-3B

Definition

GSTR-3B is a simplified, self-declared summary return that every GST-registered taxpayer in India must file to report their total output tax liability, claim Input Tax Credit (ITC), and pay the net tax due to the government. Unlike GSTR-1 which captures invoice-level details, GSTR-3B provides consolidated figures of outward supplies, inward supplies liable to reverse charge, eligible ITC, and the resulting tax payable. It is the return through which the actual payment of GST to the government is made, making it the most financially significant filing in the GST compliance cycle.

GSTR-3B must be filed monthly by the 20th of the following month for businesses with an annual turnover exceeding Rs 5 crore. For businesses under the QRMP scheme (turnover up to Rs 5 crore), GSTR-3B is filed quarterly by the 22nd or 24th of the month following the quarter, depending on the state. However, even under the quarterly filing option, tax must be paid monthly using the PMT-06 challan. The return is divided into several tables covering outward supplies (taxable, exempt, nil-rated), inward supplies attracting reverse charge, eligible ITC, exempt and non-GST inward supplies, and payment of tax including interest and late fees.

A critical aspect of filing GSTR-3B is the accurate reconciliation of ITC claimed against the GSTR-2B auto-drafted statement. The government has introduced rule 36(4) which restricts ITC claims in GSTR-3B to the amounts appearing in GSTR-2B plus a limited additional percentage for invoices not yet uploaded by suppliers. This makes it essential for businesses to regularly reconcile their purchase records with GSTR-2B data before filing GSTR-3B. OneFinOps automates this reconciliation process and pre-fills GSTR-3B with validated figures, reducing errors and ensuring that businesses neither over-claim nor under-claim their ITC entitlement.

Key Points

• GSTR-3B is the return through which GST payment is actually made to the government, summarizing output liability, ITC claims, and net tax payable.
• Monthly filers must submit GSTR-3B by the 20th of the following month; quarterly filers under QRMP must file by the 22nd or 24th after each quarter.
• ITC claimed in GSTR-3B is now restricted to amounts reflected in the auto-generated GSTR-2B statement, requiring careful reconciliation before filing.
• Late filing of GSTR-3B attracts interest at 18% per annum on the outstanding tax amount, plus a late fee of Rs 50 per day (Rs 20 for nil returns).
• GSTR-3B cannot be revised once filed; any corrections must be made in the subsequent period's return, making accuracy at the time of filing critically important.