Filing month is only painful when the books have to be rebuilt first. These reports are the same bills, arranged the way the return asks for them.
The work at filing time is rarely the filing. It is reconstructing the month: finding bills that were raised on paper, chasing purchase invoices that were never entered, and reconciling a sales figure with a tax figure that were recorded in different places.
When every bill carried its slab and its HSN as it was raised, none of that is necessary. GSTR-1, GSTR-2 and GSTR-3B are filters over records that already exist, and the HSN-wise sales and purchase reports are there for the part of the return that asks for them.
Each bill carries its slab and its code.
So the input side is complete, not partial.
For the period you are filing.
Take them out as PDF or CSV for your CA or the portal.
The money side of the business: what has been billed, what has been collected, what is still owed, and what the tax on all of it comes to. Party ledgers sit at the centre — every bill and every payment lands on somebody’s khata, and the balance there is the number you act on.
Most of this area runs on its own once bills are being raised: ledgers update as you bill, reminders go out on their due dates, and the GST reports are built from what is already recorded.
What feeds the reports, and what carries the codes.
GSTR-1 · GSTR-2 · GSTR-3B · GST sales with HSN · GST purchase with HSN
Every feature, by plan →GSTR-1, GSTR-2 and GSTR-3B, plus sales and purchase summarised by HSN.
Yes — every report exports as PDF or CSV.
The bills behind them: the slab and the HSN ride on each item, so nothing has to be classified again at filing time.
The month only needs rebuilding if it was never recorded properly in the first place.