GST Returns: Who Files What

If you run a business in India and your turnover crosses the GST registration threshold, you are required to file periodic returns with the government. But the GST portal lists over a dozen return types, and it is not obvious which ones apply to you. This post breaks it down.

What Is a GST Return?

A GST return is a document that contains details of your sales, purchases, tax collected on sales, and tax paid on purchases. You file it electronically on the GST portal. The government uses these returns to calculate your net tax liability — the difference between what you collected from customers and what you already paid to suppliers.

Who Needs to Register for GST?

Any business whose aggregate turnover exceeds Rs 40 lakh in a financial year must register (Rs 20 lakh for special category states, Rs 10 lakh for certain north-eastern states). Service providers cross the threshold at Rs 20 lakh. Once registered, you are assigned a GSTIN, and the filing obligations begin.

There are also cases where registration is mandatory regardless of turnover: inter-state supply, e-commerce sellers, casual taxable persons, and businesses required to deduct TDS under GST.

The Returns That Matter for Most Businesses

GSTR-1 is your outward supply return. It lists every invoice you issued during the period — the buyer's GSTIN, invoice number, taxable value, and the tax charged. Regular taxpayers file GSTR-1 monthly by the 11th of the following month. Businesses with turnover up to Rs 5 crore can opt for the QRMP scheme and file quarterly instead.

GSTR-3B is the summary return where you declare your total output tax, claim input tax credit, and pay the net liability. It is due monthly by the 20th (or the 22nd/24th for quarterly filers, depending on the state). This is the return that actually settles your tax dues for the period.

GSTR-9 is the annual return. It consolidates everything you reported in your monthly or quarterly filings across the financial year. Every regular taxpayer must file it by 31 December of the following year. Businesses with turnover above Rs 5 crore must also get their accounts audited and file GSTR-9C, a reconciliation statement certified by a chartered accountant.

Returns for Special Cases

GSTR-4 is filed annually by composition scheme dealers — small businesses that pay tax at a flat rate and cannot collect tax from customers. GSTR-5 is for non-resident taxable persons. GSTR-6 is filed by Input Service Distributors to allocate credit across branches. GSTR-7 is for entities required to deduct TDS under GST. GSTR-8 is filed by e-commerce operators who collect TCS.

If none of those descriptions fit you, you likely only need GSTR-1, GSTR-3B, and GSTR-9.

Common Mistakes to Avoid

Filing late attracts a penalty of Rs 50 per day (Rs 20 for nil returns), plus interest at 18 percent per annum on the outstanding tax. Many small businesses forget that even if they had no transactions in a month, they must still file a nil return.

Another frequent mistake is mismatching GSTR-1 and GSTR-3B figures. When your outward supply details in GSTR-1 do not match the summary in GSTR-3B, it triggers notices and delays your refunds. Reconcile both returns before filing.

Finally, not claiming eligible input tax credit in time is money left on the table. ITC for a financial year can only be claimed until the return for September of the following year or the date of filing the annual return, whichever is earlier.

Practical Advice

If you are a small business owner just getting started with GST, consider the QRMP scheme to reduce your filing frequency. Invest in decent accounting software that auto-populates your returns from your invoices. And set calendar reminders for every due date — the penalties are small individually but add up fast over a year.

GST compliance is not glamorous, but staying on top of it protects your input tax credit, keeps your GSTIN active, and saves you from the headache of notices and audits down the line.