StampMitra - Digital LegalTech, Virtual Office & Compliance Platform

GST Return Filing GSTR-1 and GSTR-3B

GST return filing covers GSTR-1 for your sales and GSTR-3B for the summary and payment of tax. Every registered person has to file returns, including a nil return when there was no business. Our accountants prepare and file them on the GST portal and send you a reminder before each due date.

What GST return filing is

A GST return is the statement in which a registered person reports sales, purchases, tax charged, tax credit and tax paid for a period. Section 37 of the CGST Act requires outward supplies to be reported in GSTR-1, and section 39 requires a summary return with payment of tax in GSTR-3B. Rules 59 to 61A cover the forms and the procedure. Returns are filed on the GST portal, gst.gov.in.

The returns you will hear about

They are easy to mix up. Each has its own job.

  • GSTR-1
  • GSTR-3B
  • IFF
  • CMP-08 and GSTR-4
  • GSTR-9
  • GSTR-10

Monthly filing, QRMP and composition

Which route you are on depends on turnover and on your choice.

  • Monthly filer
  • QRMP
  • Composition taxpayer

Late fee and interest

Late fee is charged per day after the due date, up to a cap. Interest is separate.

  • Government fee for filing a return: Nil
  • Late fee per day, GSTR-3B or GSTR-1: ₹50 (₹25 CGST + ₹25 SGST)
  • Late fee per day, nil return: ₹20 (₹10 CGST + ₹10 SGST)
  • Cap per return: nil return: ₹500 in total
  • Cap per return: turnover up to ₹1.5 crore: ₹2,000 in total
  • Cap per return: turnover ₹1.5 crore to ₹5 crore: ₹5,000 in total

Estimate the late fee for one return

Enter the due date from your GST portal return calendar.

Documents and data we need

GST portal login

  • GST portal login
  • Sales invoices
  • Purchase data and GSTR-2B
  • Tax payment ledgers
  • E-invoice IRN and e-way bill data
  • Status of your previous return

How a monthly return is filed

Due dates

The date depends on whether you file monthly or under QRMP.

  • GSTR-1: The 11th of the next month
  • IFF: Not applicable
  • GSTR-3B: The 20th of the next month
  • PMT-06: Not applicable
  • CMP-08 / GSTR-4: Composition taxpayers: CMP-08 by the 18th after each quarter; GSTR-4 once a year, due 30 June after the year (from FY

Mistakes that cause trouble

Claiming credit beyond GSTR-2B: Reconcile purchases with GSTR-2B before you claim.

  • Claiming credit beyond GSTR-2B
  • Wrong GSTIN or place of supply
  • HSN code missing
  • GSTR-1 and GSTR-3B do not match
  • Interest not recomputed
  • Not filing a nil return

If returns are not filed

Late fee and interest: They keep building until the return is filed and the tax paid.

  • Late fee and interest
  • Cancellation of registration
  • Buyers lose credit

Rules that catch people out

Order of returns: The portal stops you filing GSTR-1 (or IFF) while the earlier GSTR-3B is still pending (Rule 59(6)). That is why we file pending periods oldest first.

  • Order of returns
  • Very old returns
  • E-invoicing

StampMitra professional fee

Priced by your average monthly turnover, or by the route you need (nil, composition or catch-up). We confirm the exact amount before filing. These are our fees, separate from any government amount. GST is extra.

  • Under ₹5 lakh: ₹999
  • ₹5 lakh to ₹20 lakh: ₹2,499
  • ₹20 lakh to ₹1 crore: ₹5,499
  • ₹1 crore to ₹5 crore: ₹8,999
  • ₹5 crore to ₹25 crore: ₹14,999
  • Nil returns only (no sales, no purchases, no tax): ₹799

What StampMitra does for you

Accountant-managed filing: Accountants prepare and file GSTR-1 and GSTR-3B using GST software.

  • Accountant-managed filing
  • A dedicated GST advisor
  • Reminders before the deadline
  • Monthly status report
  • E-invoice and e-way bill support
  • Standard accounting records

How it works

  1. Upload invoices and file GSTR-1 Upload sales invoices to GSTR-1 (or IFF) and file with DSC (or EVC where allowed).
  2. Review GSTR-2B Match the auto-drafted tax credit statement with your purchases.
  3. Prepare GSTR-3B Fill outward supplies, tax credit and tax payable.
  4. Pay the tax Create the challan and pay from the cash and credit ledgers.
  5. File GSTR-3B Submit with DSC (or EVC where allowed) and keep the acknowledgement.

Frequently asked questions

Who has to file GST returns?

Every registered person has to file returns, whatever the turnover, including a nil return when there were no sales or purchases. Turnover only decides whether registration is mandatory.

Do I file monthly or quarterly?

Regular taxpayers file monthly by default. Under QRMP, taxpayers with aggregate turnover up to ₹5 crore in the preceding financial year who have filed the previous return can file returns quarterly and pay tax monthly (Notification 84/2020-CT).

What is the difference between GSTR-1 and GSTR-3B?

GSTR-1 lists your sales invoices and notes, and decides the credit your buyers receive. GSTR-3B is the summary of sales, tax credit and tax payable, filed with payment. Monthly filers file both every month; QRMP filers file both once a quarter.

What is the late fee for GSTR-3B and GSTR-1?

₹50 a day (₹25 CGST + ₹25 SGST), or ₹20 a day (₹10 + ₹10) for a nil return, up to a cap per return: ₹500 for a nil return, ₹2,000 for turnover up to ₹1.5 crore, ₹5,000 for ₹1.5 crore to ₹5 crore and ₹10,000 above ₹5 crore (Notifications 19/2021-CT and 20/2021-CT, section 47). Interest of 18% a year applies to tax paid late.

Is a nil return necessary?

Yes. A period with no sales or purchases still needs a return. Missing it attracts the late fee, at the lower nil-return rate of ₹20 a day.

Can I revise GSTR-3B after filing?

No. A filed GSTR-3B cannot be revised; errors are corrected in a later return. That is why we reconcile with GSTR-2B and your books before filing.

What if I do not file for months?

Late fee and interest keep building. Under section 29(2)(c), a regular taxpayer who has not filed returns for a continuous period of six months can have the registration cancelled by the officer. See our GST revocation page for the route back. Composition taxpayers face cancellation after three consecutive tax periods without a return.

What do composition taxpayers file?

A quarterly statement of tax paid in CMP-08 and an annual return in GSTR-4. The composition limit is ₹1.5 crore for goods and mixed supplies and ₹50 lakh for service providers under section 10(2A). It is not open to inter-State suppliers or e-commerce sellers.

What do you need from me every month?

Your sales invoices with credit and debit notes, purchase data, and the e-invoice and e-way bill data where they apply. We prepare the returns and file them.

Is the StampMitra fee the only cost?

Our professional fee is shown in the table above, plus GST. Any tax, interest or late fee you owe is paid to the government and is separate. StampMitra is a filing assistance platform; it is not the GST department.