Tax & Compliance · THE NO-PANIC PLAN
Prepare and file Indian GST GSTR-1 and GSTR-3B returns
This workflow is for a regular Indian GST taxpayer or its authorized finance professional handling the taxpayer's own assigned GSTR-1 and GSTR-3B period. Your actual return frequency, eligibility, due dates, disclosures, credit eligibility, reversals, payment and late consequences depend on current law and the GSTIN's facts. Confirm them on the official GST Portal and with a qualified GST practitioner; this guide does not calculate tax or decide what is claimable. GSTR-1 reports outward-supply details. GSTR-2B is a read-only system-generated input-tax-credit statement, not a return to file. GSTR-3B is a separate summary return. Keep customer and supplier records secure, use only the official portal for filing, and never share passwords, OTPs or DSC PINs.
MISSION Help a regular Indian GST taxpayer prepare period records, review GSTR-1 and GSTR-3B on the official portal, reconcile the resulting acknowledgements, and retain evidence without calculating legal liability.
Open the GST Portal's current GSTR-1 filing guideTHE REAL-WORLD BIT
What happens outside this browser tab?
Confirm the GSTIN's taxpayer type, return frequency and period in the GST Portal; close and reconcile sales and purchase books to source evidence; prepare, generate and carefully review GSTR-1; download GSTR-2B and reconcile it to purchase records without treating every listed amount as automatically eligible; prepare GSTR-3B from reviewed books, portal summaries and a qualified tax review; use the portal's payment and authorized-signatory flow where applicable; file each required form and save its final acknowledgement, return copy and reconciliation record.
YOUR CHECKLIST, WITH FEWER DRAMATIC SIGHES
One step at a time.
Follow the order below. If a step names a Nirmion tool, its link is right there with it.
- 01
Confirm the GSTIN, return frequency and exact period
Sign in at the official GST Portal and open Services > Returns > Returns Dashboard for the correct GSTIN. Select the financial year and period shown for that GSTIN, then note which return tiles are available and their portal-displayed due dates. Confirm whether the GSTIN is a regular taxpayer and whether its assigned filing frequency is monthly or quarterly; QRMP has its own return and payment pattern and does not apply to every taxpayer. This workflow excludes composition taxpayers, ISDs, TDS/TCS filers, non-resident taxpayers and special cases. Check current portal notices, filing prerequisites, prior-period filing status, amendments and any open notices before starting. If the period, category or frequency is unclear, stop and ask the GST practitioner responsible for the registration rather than choosing a tile based on a generic calendar.
- 02
Close the books and build a traceable outward-supply register
Export the period's sales and credit/debit-note ledger from the accounting system and tie it back to invoice sequences, e-invoice data where applicable, advances and adjustments, exports, exempt or non-GST items, and any amendments affecting earlier periods. Separate records by the categories the current GSTR-1 portal actually requests; do not infer a tax rate, place of supply, exemption or table classification from this guide. Check customer GSTINs and invoice fields against authoritative business records. The GST Invoice Checker (209) can flag basic invoice-field omissions and GSTIN structure only; it does not validate a GSTIN against the portal, determine tax treatment or file a return. A browser-local VAT/GST Collection Tracker (2064) may help summarize figures you enter, but its output is not a tax computation or statutory return. Keep source documents in the controlled accounting system, not in public tools.
- 03
Reconcile purchase records and review GSTR-2B with a qualified reviewer
Download the period's GSTR-2B from the Returns Dashboard and preserve the original file. Match supplier documents line by line to the purchase ledger, flag missing, duplicated, mismatched or amended records, and contact suppliers through established channels to resolve reporting differences. The GST Portal describes GSTR-2B as an auto-drafted, static statement that is not filed; it is an input to review, not an automatic approval of credit. Eligibility, restrictions, reversals, reverse-charge treatment and timing must be checked under current law and the taxpayer's evidence by the responsible GST practitioner. Record the reviewer, unresolved differences and disposition for each material exception. Never claim an amount solely because it appears in GSTR-2B, and never duplicate a credit already taken. If reconciliation changes sales data, correct the source records and assess whether the relevant outward-supply statement must also be updated under current portal rules.
- 04
Prepare, generate and review GSTR-1 before filing
From the GST Portal Returns Dashboard, open the GSTR-1 tile for the confirmed period and use the currently available online or offline preparation method. Enter or upload outward-supply details from the closed register, including only the records and categories applicable to this GSTIN and period. Review amendments and notes carefully against the original document and the portal's current instructions. Generate the portal summary, inspect record-level errors and recipient/category summaries, correct rejected or inconsistent records, then regenerate and compare the totals with the approved sales register and accounting control totals. Have a second authorized reviewer approve the final preview. The portal manual states that a filed GSTR-1 cannot simply be edited or deleted, so pause if totals, classification, customer identity or period remain unresolved. Do not assume nil filing, IFF, QRMP or special-category handling applies without checking the GSTIN's actual setup.
- 05
Review GSTR-3B, complete the portal's payment/signing flow and retain proof
Open the GSTR-3B tile for the same confirmed period. Compare any system-generated values with the finalized books, GSTR-1 and the reviewed GSTR-2B; inspect every applicable section and resolve differences with the responsible GST practitioner before accepting or changing values. Do not copy a number from a tracker or assume GSTR-1/GSTR-2B automatically establishes the correct liability, eligible credit or payment. Review the draft return and payment ledger/challan requirements shown for the GSTIN; only an authorized person should approve payment and filing. Follow the current portal prompts for declaration, authorized signatory and DSC/EVC verification. The GST Portal's nil-return manual documents the common dashboard, draft-preview, authorized-signatory, filing and download stages, but nil eligibility is narrow and that manual does not specify normal-return tax calculations. After filing each required form, verify the portal status shows Filed, download the final return/acknowledgement and payment evidence, and reconcile the filed copy to the approved workpapers. If filing fails or a notice appears, preserve the error/notice and use the portal's official help or professional channel.
THE HELPER CREW
Tools for the fiddly bits.
These are the currently published Nirmion tools matched to this guide. Open a tool page for its accepted inputs and limits.
RECEIPTS, PLEASE
Sources & review notes
Each source is linked to the steps it supports. Open it to check its scope and current guidance.
Source checked 2026-10-05