Complete GST Filing Guide

GST Return Filing Is More Than Uploading Numbers.

Good GST filing means sales reporting, ITC matching, tax liability review, payment planning and clean records that can stand scrutiny during notices, audits and assessments.

GST Filing Support

Before filing, we reconcile sales, purchases, ITC and tax payable.

GST returns directly affect your customer ITC, vendor credit, working capital and future GST notices. We prepare returns with a checklist-first approach instead of last-minute filing.

GSTR-1 sales invoice review before outward supply filing.
GSTR-3B liability, ITC and cash ledger payment check.
GSTR-2B / purchase register reconciliation for safer ITC claim.
Late return, nil return and QRMP filing guidance.
Mismatch, interest and late fee risk review before submission.
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    Why This Matters

    Clean GST Returns Protect Cash Flow, ITC and Customer Trust.

    GST return mistakes often show up later as mismatch notices, ITC reversals, interest demand or customer complaints.

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    Accurate sales reporting

    GSTR-1 must reflect invoice details correctly because customers use it for ITC visibility.

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    Correct tax payment

    GSTR-3B summarises liability, ITC and cash payment for the tax period.

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    ITC reconciliation

    Purchase register and GSTR-2B review reduces excess ITC and vendor mismatch risk.

    On-time compliance

    Regular filing helps avoid late fees, interest and return-blocking problems.

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    Notice-ready records

    Monthly working papers help answer future GST notices faster.

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    Better business visibility

    Filing discipline gives clearer sales, tax and vendor-credit tracking.

    Eligibility Snapshot

    Which GST Return Filing Pattern Applies to You?

    Most regular taxpayers deal with GSTR-1 and GSTR-3B, but the frequency depends on turnover, QRMP option and business profile.

    Monthly Filing

    Regular Monthly Taxpayer

    GSTR-1Monthly sales return
    GSTR-3BMonthly summary return
    Typical due date11th / 20th
    Best forHigher turnover
    FocusMonthly reconciliation
    QRMP Option

    Quarterly Return, Monthly Payment

    ReturnsQuarterly
    PaymentMonthly challan
    GSTR-3B due22nd / 24th
    Suitable forEligible smaller taxpayers
    FocusQuarterly filing discipline
    Documents Required

    Documents Needed for GST Return Filing.

    The exact list depends on your sales channel, purchase volume, export status, e-commerce activity and whether returns are pending.

    Sales Records

    • Tax invoices and debit/credit notes
    • B2B and B2C sales summary
    • Export invoices and LUT details
    • E-commerce operator reports
    • HSN/SAC wise summary
    • Previous return data

    Purchase & ITC Records

    • Purchase register
    • GSTR-2B and 2A data
    • Vendor GSTIN-wise details
    • RCM expense details
    • Blocked credit review
    • ITC reversal working

    Payment & Filing Records

    • Cash ledger balance
    • Credit ledger details
    • GST challans
    • Interest/late fee working
    • Portal login access
    • Previous notices, if any
    5-Step Process

    How CompanyJi Handles GST Return Filing.

    We focus on reconciled numbers, not just portal submission.

    01

    Data Collection

    We collect sales, purchase, credit note, debit note and GST portal data.

    02

    Reconciliation

    We compare sales records, GSTR-2B, purchase register and previous returns.

    03

    Tax Working

    We calculate output tax, ITC, RCM, late fee and interest where applicable.

    04

    Return Filing

    We prepare and file GSTR-1, GSTR-3B or QRMP returns through GST portal.

    05

    Filing Pack

    You receive acknowledgement, challan details and monthly compliance summary.

    Compare Before Filing

    GSTR-1 vs GSTR-3B vs QRMP.

    Understanding the return type helps avoid mismatch and late filing mistakes.

    Parameter
    GSTR-1
    GSTR-3B
    QRMP
    Purpose
    Outward supplies
    Tax payment summary
    Quarterly return option
    Main data
    Sales invoices
    Liability and ITC
    Quarterly GSTR-1/3B
    Customer impact
    High, affects ITC visibility
    Indirect
    Depends on IFF use
    Payment
    No tax payment
    Tax payment made
    Monthly payment, quarterly return
    Common risk
    Wrong invoice data
    Wrong ITC/liability
    Missed monthly challan
    Everything You Need to Know

    GST Return Filing FAQs

    Detailed answers on GSTR-1, GSTR-3B, QRMP, ITC reconciliation, nil returns, due dates, late fees, notices and practical GST filing mistakes.

    Need GST returns filed without mismatch? Start with reconciliation.

    Share your GSTIN, sales data, purchase register and pending return status. CompanyJi will review the return type, due dates, ITC position and filing plan before submission.