Filing GSTR-1 and GSTR-3B from Finac
GSTR-1 and GSTR-3B are the two returns most GST-registered businesses file every month. Rather than a separate filing tool, Finac builds both forms directly from the GST No. or Branch you select — so the statutory layout you see here maps onto the same outward-supply and input-tax-credit data covered in GST Filings in Finac and Reconciling Input Tax Credit.
Note: The GST module is tagged Beta in the product. GSTR-1 and GSTR-3B are the two forms currently available from the GSTR Forms dropdown.
On this page
Opening a GSTR form
From a client's GST module, use the GSTR Forms dropdown in the top right to choose GSTR-1 or GSTR-3B. Each form opens with a GST No. / Branch selector, a Financial Year selector, and a Month selector.
- Select either a GST No. or a Branch — not both, per the on-screen note. Selecting a Branch is generally the simpler path if the client has more than one registered address.
- Set the Financial Year and Month you're filing for. GSTR-1 is filed for the current month; a banner on the GSTR-3B screen reminds you that GSTR-3B is filed for the previous month, once GSTR-1 for that period is in.
The header block
Once a GST No. or Branch is selected, both forms populate the same statutory header: GSTIN, legal name, trade name, and PAN, pulled directly from the client's registered business details.
GSTR-1 for Demo Company Pvt Ltd, Branch selected, FY 2025-26, Mar-26 — GSTIN, legal name, trade name, and PAN populated from the client's business address record.
|
Field |
Where it comes from |
|
GSTIN |
The GST registration number tied to the selected GST No. or Branch. |
|
2(a). Legal name of the registered person |
The client's registered legal name. |
|
2(b). Trade name, if any |
The client's trade name, if one is on file. |
|
PAN Number |
The PAN linked to that GSTIN. |
|
2(c)/2(d). ARN and Date of ARN, Authorized Signatory fields, Filed by |
Fill in once the return has actually been filed — blank on an unfiled return. |
GSTR-1: structure
Below the header, View GSTR-1 Form Below lists every statutory table from the official GSTR-1 layout as a collapsible section — Expand All or Collapse All controls the whole list at once, or expand one section at a time with the arrow on its left.
|
Section |
Covers |
|
4A / 4B |
Taxable outward supplies to registered persons — regular (4A) and reverse-charge (4B). |
|
5A |
Taxable inter-state supplies to unregistered persons above the large-invoice threshold — B2CL. |
|
6A / 6B / 6C |
Exports, supplies to SEZ units or developers, and deemed exports. |
|
7 |
Taxable supplies to unregistered persons not covered in Table 5 — B2CS. |
|
8 |
Nil-rated, exempted, and non-GST outward supplies. |
|
9A / 9B / 9C |
Amendments to earlier filings, and credit/debit notes — original and amended. |
|
10 |
Amendments to unregistered-person supplies reported in Table 7. |
|
11A / 11B |
Advances received, and advances adjusted against supplies in Tables 4, 5, 6 and 7 — plus their amendments. |
|
12 |
HSN-wise summary of outward supplies. |
|
13 |
Documents issued during the period. |
A Total Liability row at the foot of the form sums Value, IGST, CGST, and SGST across every section — the figure you'd carry into GSTR-3B's outward-supply table.
Note: Totals populate once outward supply invoices for the selected month are classified into these specific statutory categories. An invoice sitting in the plain Outward Supplies list (see GST Filings in Finac) doesn't automatically appear here until that classification step is complete — worth checking first if a section you expect to see figures in still reads zero.
GSTR-3B: structure
GSTR-3B is Finac's summary return — fewer, broader tables than GSTR-1, matching the consolidated nature of the actual GSTR-3B filing.
GSTR-3B for the same client, Branch, FY 2025-26 and Mar-26 — the same populated header, with the 3.1, 3.1.1, and 3.2 summary tables listed below.
|
Section |
Covers |
|
3.1 |
Outward supplies and inward supplies liable to reverse charge — the headline summary table. |
|
3.1.1 |
Supplies notified under section 9(5) of the CGST Act and the corresponding IGST/UTGST/SGST provisions. |
|
3.2 |
Inter-state supplies made under 3.1(a) and 3.1.1(i), broken out further. |
- File GSTR-3B — submit the return once every table reflects the figures you intend to file.
- Export — download the form as prepared, for records or for a review pass before filing.
Filing
Both forms carry a File GSTR-1 / File GSTR-3B button in the top right, next to the period selectors. Review every expanded section against the client's actual filing period before using it — once filed, a form's ARN and Date of ARN fields populate and it moves out of the editable, pre-filing state shown here.
Why does my GSTR-1 or GSTR-3B show zeros across every table?
The statutory tables pull from outward-supply and input-tax-credit records that have been classified into the specific GSTR sections shown here (4A, 5A, and so on). A client whose invoices haven't yet gone through that classification step — even with real entries sitting in the plain Outward Supplies or Input Tax Credit tabs — will show zero totals until it does. Check with your Finac administrator if you expect figures for a given period and don't see them.
Can I select both a GST No. and a Branch?
No — the form takes one or the other. Pick whichever is simpler for the client: Branch if you think in terms of registered addresses, GST No. if you already have the GSTIN in hand.
What's the difference between GSTR-1 and GSTR-3B in Finac?
GSTR-1 lists every outward-supply detail across the full statutory table set (4A through 13). GSTR-3B is the consolidated summary return, filed for the prior month once GSTR-1 for that period is in — Finac's version mirrors that same two-table relationship.
Related Articles
- GST Filings in Finac
- Reconciling Input Tax Credit
- Understanding Your Reports