GST Consultancy Services

Filing monthly returns come down to a few things you need in place before you sit down at the GST portal. GSTR-1, which reports outward supplies, is due by the 11th of the following month. GSTR-3B, the summary returns covering sales, purchases, tax liability and input tax credit, is due by the 20th. This requires sales invoices reconciled in advance, purchase records matched against GSTR-2B to claim ITC correctly, and tax liability worked out after adjusting for any credit available. Businesses above INR 5 crore turnover file monthly by default, while smaller taxpayer can opt into the QRMP scheme and file quarterly, though tax still gets paid monthly through Form PMT-06. One thing worth flagging: even a month with zero transactions still requires a nil return, so there's no skipping it just because nothing happened.

Handling GST in-house is manageable for a while, until notices start arriving or a mismatch between the books and GSTR-2B eats into available credit. A professional catches classification errors before they turn into liabilities, keeps filings aligned with whichever rate or exemption applies to a business's specific goods or services, and stays on top of the notification changes that seem to land every few months. There's also the reconciliation side, matching outward and inward supplies across returns, which gets messy fast once transaction volume grows or interstate sales and reverse charge enter the picture. Beyond the filing itself, a firm that knows GST inside out can represent a business during an audit or department query, something that's far harder to manage internally once the department starts asking pointed questions.

GSTR-9 pulls together an entire year's worth of GST activity, so the document list reflects that. It requires the GSTR-1 and GSTR-3B filings for all twelve months of the financial year, since GSTR-9 is essentially a reconciliation of what's already been reported. Alongside that, sales and purchase registers, details of input tax credit claimed and reversed, HSN-wise summary of outward supplies, and records of any amendments made during the year all need to be on hand. If turnover crosses INR 5 crore, GSTR-9C also comes into play, a reconciliation statement that needs to be certified, so audited financial statements and books of accounts need to be squared away before reaching that stage. Getting these together well before the 31 December deadline saves a lot of last-minute scrambling.