GST Return Types Explained: GSTR-1, 3B, 9 and More

Once registered under GST, a business must file returns on a periodic basis. The returns are interconnected, and what you report in one feeds into the next.

GSTR-1: outward supplies

GSTR-1 reports the sales you made during the period, invoice by invoice. It is the source of the data that appears in your buyers' input tax credit statements, so accuracy here matters to your customers as much as to you.

GSTR-3B: the summary return

GSTR-3B is the summary return where you declare your total outward supplies, your eligible input tax credit, and the net tax payable. It is the return through which tax is actually discharged. Most businesses file it monthly.

GSTR-9: the annual return

GSTR-9 consolidates the returns filed during the year into a single annual statement. It is filed once a year, and the requirement to file it depends on turnover.

Composition scheme returns

Businesses that opt for the composition scheme file a different, simpler return that reports turnover and pays tax at a flat rate, instead of the invoice-level returns.

TDS and TCS returns

Businesses that deduct tax at source under GST file a separate return for those deductions, and e-commerce operators file a return for the tax they collect at source on supplies made through their platform.

Late fees and interest

Missing a return attracts a late fee for each day of delay, and tax paid late attracts interest. Because returns are linked, a missing GSTR-1 can block your buyer's credit and a missing GSTR-3B can block the next period's filing. Keeping a calendar of due dates is the simplest way to avoid the compounding cost.

Reconciliation

The returns only tell half the story. Reconciling your reported sales and purchases against your books, and your input credit against your suppliers' filings, is what prevents notices. This reconciliation is best done every month rather than at year end.