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GST Return Filing – GSTR-1, GSTR-3B & GSTR-9

Obtain your 15-digit GSTIN in 3-7 days with 100% online verification and hassle-free return filing.

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Written by the LawLine legal & compliance editorial teamReviewed for accuracy against official government sourcesLast updated:

Quick answer

GST returns are periodic statements of your sales and tax. Regular taxpayers file GSTR-1 for outward supplies and GSTR-3B for the summary and tax payment, monthly or quarterly under QRMP. An annual return, GSTR-9, is filed after the year ends. Late filing attracts a daily fee and 18% interest on unpaid tax.

Also searched as: gstr 3b filing · gst late fee

Overview

What you need to know about GST Return Filing – GSTR-1, GSTR-3B & GSTR-9

Goods and Services Tax (GST) registration is mandatory for businesses supplying goods with turnover exceeding ₹40 Lakhs (₹20 Lakhs for services and special category states), or engaging in inter-state e-commerce.

LAWLINE provides lightning-fast GST registration handled by specialized GST tax professionals, avoiding common query rejections such as address mismatches and HSN ambiguity.

Seamlessly bundle monthly GSTR-1, GSTR-3B filings, and Input Tax Credit (ITC) reconciliation with our automated filing dashboard.

Is this for you?

Who needs this and when

Every business with a regular GST registration must file returns, whether or not it made any sales in the period. GSTR-1 reports your outward sales, and GSTR-3B reports the summary of sales and purchases and the tax you pay. Under the QRMP scheme, taxpayers with aggregate turnover up to ₹5 crore can file quarterly and pay tax monthly.

GSTR-9, the annual return, is for regular taxpayers, though small taxpayers below the notified turnover limit may not have to file it. Larger taxpayers may also need a reconciliation statement, GSTR-9C. Composition taxpayers, e-commerce operators and non-resident taxpayers follow different returns and due dates. If you are unsure which return applies to you, check your portal dashboard or ask a professional before the due date arrives.

Benefits

What you get with LawLine

  • Expert verification of documents to prevent clarification notices from GST officers
  • Jurisdictional ward mapping for accurate state and central tax allocation
  • Assistance with Aadhaar authentication for instant biometric clearance
  • Free consultation on Input Tax Credit (ITC) optimization and reverse charge mechanisms
  • Integrated invoicing software compatible with e-invoicing and e-way bill generation

Process

Step-by-step: how it works

  1. 1Document Upload & ReviewSubmit basic KYC and place of business records to our GST portal for CA compliance verification.
  2. 2ARN Generation on GST PortalWe prepare Form GST REG-01 and complete biometric Aadhaar OTP validation to generate the Application Reference Number.
  3. 3GSTIN IssuanceThe tax officer approves the application and issues Form GST REG-06 containing your active 15-digit GSTIN.

Documents required

Clear scans or phone photos are enough to get started.

  • PAN Card of the Proprietor / Business Entity
  • Aadhaar Card of the Authorized Signatory
  • Business Registration Proof (COI / Partnership Deed / Shop Act License)
  • Registered Office Proof (Electricity Bill + Rent Agreement + Owner NOC)
  • Cancelled Cheque or Bank Statement showing Name, Account Number and IFSC

Pricing

Cost breakdown

ItemAmountWhat it means
Government fee for filing returns₹0The portal charges no fee to file. Late fees apply only if you file after the due date.
LawLine monthly GSTR-1 and 3B filing₹500 onwards per monthDepends on the number of invoices and the complexity of your credit.
Quarterly (QRMP) filing₹1,200 onwards per quarterIncludes the monthly tax payment challan where needed.
GSTR-9 annual return₹3,000 onwardsGSTR-9C or large reconciliations cost extra.
Late fee on missed returnsVaries by returnIt is charged per day, subject to a cap, plus interest at 18% a year on tax that is paid late.

Zero Government Filing Fee

Timeline

How long it takes

  1. Collect sales and purchase data

    1–2 days

  2. GSTR-1 filing (usually by the 11th, or the 13th for quarterly filers)

    Monthly or quarterly

  3. Reconcile with GSTR-2B

    1–2 days

  4. GSTR-3B filing and payment (around the 20th, or the 22nd–24th under QRMP)

    Monthly or quarterly

  5. GSTR-9 annual return (usually 31 December of the next year)

    Once a year

Avoid delays

Common mistakes to avoid

  • Claiming input tax credit that does not appear in GSTR-2B. Such credit can be reversed with interest, so reconcile your purchase data before filing every GSTR-3B.
  • Filing GSTR-3B but forgetting GSTR-1, or the reverse. The two returns must match, and a mismatch can bring a notice from the department.
  • Not filing a nil return because there were no sales. A missed nil return still attracts a late fee, and continued default can lead to cancellation.
  • Paying the tax after the due date and ignoring interest. Interest runs from the day after the due date, even when the return itself is filed on time.
  • Treating GSTR-9 as optional without checking the turnover limit for your year. Rules for small taxpayers change often, so confirm the notification for that year.

Next steps

After it’s done: staying compliant

After filing, download the acknowledgement and keep the challans and working papers for at least the period the law requires. Check that your GSTR-1 invoices appear in your buyers’ GSTR-2B, because buyers who cannot claim credit may stop dealing with you. Note the next due date in your calendar, and check the portal for notices.

If you fall behind, file the oldest return first and pay the interest and late fee, because the portal may block later returns. Keep every record of your sales, purchases and credit reversals in an organised file. If you receive a notice or a mismatch message, reply within the stated time and seek professional advice.

FAQs

Frequently asked questions

Is GST registration mandatory for e-commerce sellers?

Yes, any business or individual selling products online via platforms like Amazon, Flipkart, or own Shopify store must have GST registration regardless of turnover.

What happens if a clarification notice (Form GST REG-03) is issued?

Our GST attorneys handle clarifications without any additional fee by filing Form GST REG-04 within the statutory 7-day window.

Key takeaways

  • GSTR-1 reports your sales, and GSTR-3B summarises your tax and carries the payment.
  • QRMP lets taxpayers with turnover up to ₹5 crore file quarterly and pay tax monthly.
  • GSTR-9 is the annual return, with relief for small taxpayers under the notified limits.
  • Late fees run per day up to a cap, and interest at 18% a year applies on late tax.
  • Nil returns must still be filed on time.

Official sources & government portals

This guide is general information, not legal advice for your situation. Laws and fees change; confirm with an expert before acting.

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