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GST Return Filing in Chennai, Filed On Time

Send your sales and purchases each month and we handle the rest. Our GST return filing services in Chennai cover GSTR-1, GSTR-3B, annual returns and input credit checks.

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Trusted by businesses across Chennai

Benefits

Why on-time GST return filing matters in Chennai

Late or wrong returns cost more than the fee. They block credit, e-way bills and sometimes the registration itself.

  • No late fees

    Late returns attract a fee for each day, plus interest on tax paid late.

  • Input credit protected

    Credit claimed only when it matches what suppliers have reported.

  • Customers keep their credit

    Your GSTR-1 on time lets your buyers claim credit on your invoices.

  • E-way bills keep working

    Missing GSTR-3B for two periods blocks e-way bill generation.

  • Registration stays active

    Long gaps in filing can lead the officer to cancel your GSTIN.

  • Fewer notices

    Clean, matching returns draw far fewer scrutiny notices.

  • Loan and tender ready

    Banks and buyers check your GST filing history.

  • Your time back

    No more late nights on the portal before the due date.

Behind on GST returns?

Tell us how many months are pending. We'll work out the late fees and interest and file them in order.

Who should apply

Who we file GST returns for in Chennai

Every registered business files returns, even in a month with no sales.

  • Monthly filers

    GSTR-1 and GSTR-3B every month.

  • Quarterly (QRMP) filers

    Quarterly returns with monthly tax payments, up to ₹5 crore turnover.

  • Composition dealers

    CMP-08 every quarter and GSTR-4 every year.

  • Ecommerce sellers

    Marketplace sales matched with TCS statements.

  • Exporters

    Zero-rated supplies reported, with refund support.

  • Restaurants and cafes

    High-volume consumer sales filed accurately.

  • Service businesses

    Agencies, consultants and contractors.

  • Businesses with pending returns

    Catch-up filing before the three-year limit runs out.

Who we file for

Chennai businesses that trust us with their returns

Shops, distributors and factories across Chennai send us their monthly data. We reconcile it, file their GST returns and flag anything that needs attention.

  • Trays of sweets and snacks on display
    Sweet shops and bakeries
  • Warehouse racks stacked with boxes on pallets
    Distributors with stock
  • Two men walking through a large industrial shed
    Factories and mills
  • Shopkeeper standing in a store stocked with drinks
    Retail and convenience stores

Returns we file

GST returns and due dates in Chennai

Your dates depend on whether you file monthly or quarterly. These are the main ones for Tamil Nadu.

  • 11th or 13th

    GSTR-1 sales return

    By the 11th monthly, or the 13th after the quarter for QRMP filers.

  • 20th or 22nd

    GSTR-3B summary and tax

    By the 20th monthly, or the 22nd after the quarter for Tamil Nadu QRMP filers.

  • Quarterly and yearly

    CMP-08 and GSTR-4

    For composition dealers: tax every quarter and a return every year.

  • 31 December

    GSTR-9 and GSTR-9C

    The annual return and reconciliation statement for the previous year.

Documents

What we need each month for GST returns

Most clients share these from their billing or accounting software. Excel or PDF both work.

  • Sales

    • Sales invoices or sales register
    • Credit and debit notes
    • Export invoices and shipping bills
    • Marketplace sales reports

    We check each B2B invoice has the buyer's GSTIN.

  • Purchases

    • Purchase invoices
    • Expense bills with GST
    • Import bills of entry
    • Reverse charge purchases

    We match these against your GSTR-2B.

  • Other details

    • GST portal login
    • Bank statement, if asked
    • E-way bills for the month
    • Any notices received

    Send them by the 5th and we'll file well before the due date.

No accounting software? That's fine

Photos of invoices or a simple Excel sheet work. We'll suggest an easy format after the first month.

Send details on WhatsApp

Process

How we handle GST return filing in Chennai

The same five steps every month, finished well before the due date.

  1. 1

    Data collection

    Sales and purchase data shared on WhatsApp or email.

    By the 5th
  2. 2

    Reconciliation

    Purchases matched with GSTR-2B and supplier invoices reviewed.

    1-2 days
  3. 3

    GSTR-1 filed

    Sales invoices uploaded so your buyers get their credit.

    By the 11th or 13th
  4. 4

    GSTR-3B and payment

    Tax worked out, challan shared and the return filed.

    By the 20th or 22nd
  5. 5

    Monthly summary

    Filed returns, tax paid and any mismatches flagged for you.

    After filing

Due dates shown are the usual ones. When the government extends a date, we tell you.

Hand over your GST returns

Share your GSTIN and last month's data. We'll take it from your next return.

Common mistakes

GST return mistakes that lead to notices

Most GST notices start with a mismatch that could have been caught before filing.

  • Claiming credit not in GSTR-2B

    Input credit claimed on invoices your supplier hasn't reported.

    How National Filings prevents it

    We claim credit only after matching it with GSTR-2B.

  • GSTR-1 and GSTR-3B don't match

    Sales reported differently in the two returns.

    How National Filings prevents it

    We reconcile both before either is filed.

  • Wrong tax type

    IGST charged on a local sale, or CGST and SGST on an inter-state one.

    How National Filings prevents it

    We check the place of supply on every invoice.

  • Filing late

    Late fees, interest and blocked e-way bills.

    How National Filings prevents it

    We file before the due date, every month.

Cost

GST return filing cost factors in Chennai

Our fee depends on how many invoices you have and how often you file. Here's what affects the total.

  • Fixed monthly

    Professional fee

    Based on invoice volume and filing frequency, quoted upfront.

  • Quoted separately

    Annual return

    GSTR-9, and GSTR-9C where it applies.

  • Per day of delay

    Late fees

    Charged by the government on late returns, up to a limit.

  • 18% a year

    Interest on late tax

    Charged on tax paid after the due date.

Get a monthly quote

Tell us your average invoices a month and whether you file monthly or quarterly. We'll quote a fixed fee.

Annual return

GSTR-9 and GSTR-9C annual return filing in Chennai

The annual return pulls the whole year together. It's where earlier mistakes show up, so we reconcile before filing.

  • Up to ₹2 crore

    GSTR-9 optional

    Smaller taxpayers can choose not to file the annual return.

  • Above ₹2 crore

    GSTR-9 mandatory

    A full summary of the year's sales, purchases, tax and credit.

  • Above ₹5 crore

    GSTR-9C

    A self-certified reconciliation of books with GST returns.

  • 31 December

    Due date

    Following the end of the financial year, unless extended.

Input tax credit

GSTR-2B reconciliation and ITC in Chennai

Our GST reconciliation services in Chennai match every purchase with GSTR-2B before you claim credit.

  • Monthly

    GSTR-2B statement

    A fixed monthly statement of credit available from your suppliers' filings.

  • Every month

    Purchase matching

    Your purchase register matched invoice by invoice with GSTR-2B.

  • Before filing

    Invoice Management System

    Supplier invoices accepted, rejected or kept pending on the portal.

  • As needed

    Supplier follow-up

    Missing invoices chased with suppliers so credit isn't lost.

Why National Filings

Why choose National Filings for GST return filing in Chennai

  • Filed before the due date

    Every month, with a reminder when we need your data.

  • Credit matched first

    GSTR-2B reconciliation before any credit is claimed.

  • Returns that agree

    GSTR-1, GSTR-3B and the annual return kept in line.

  • Fixed monthly fee

    Quoted upfront based on your invoice volume.

  • Notices handled

    If a mismatch notice comes, we reply for you.

  • WhatsApp summaries

    Filed returns and tax paid, sent after every filing.

FAQ

GST return filing in Chennai: your questions

Which GST returns does a regular business file?

GSTR-1 for sales and GSTR-3B for the summary and tax payment, monthly or quarterly depending on your scheme, plus the annual return GSTR-9 where it applies. Composition dealers file CMP-08 every quarter and GSTR-4 every year.

What are the due dates for GST returns in Tamil Nadu?

Monthly filers file GSTR-1 by the 11th and GSTR-3B by the 20th of the next month. QRMP filers file GSTR-1 by the 13th after the quarter and GSTR-3B by the 22nd after the quarter, paying tax monthly in between.

Do I need to file returns if there were no sales?

Yes. A nil return must still be filed for every period you are registered. Missing nil returns attracts late fees too.

What is GSTR-2B reconciliation?

It is matching your purchase records with GSTR-2B, the monthly statement built from your suppliers' returns. You should only claim input credit that appears there, so we match every invoice and follow up on missing ones.

Is GSTR-9 annual return mandatory?

It's optional for businesses with turnover up to ₹2 crore and mandatory above that. Businesses above ₹5 crore also file GSTR-9C, a reconciliation of their books with the returns. Both are due by 31 December after the year ends.

What happens if I file GST returns late?

A late fee applies for each day of delay, up to a limit, and interest at 18% a year applies on tax paid late. Missing GSTR-3B for two periods blocks e-way bills, and long gaps can lead to cancellation of your registration.

Can I file GST returns from earlier years now?

Only within three years of their original due date. After that, the GST portal no longer accepts them, so pending returns should be filed as soon as possible.

How much do GST return filing services in Chennai cost?

It depends on how many invoices you have and whether you file monthly or quarterly. We quote a fixed monthly fee upfront, with the annual return quoted separately.

Didn't find your question?

Ask us on WhatsApp

Get your GST returns filed on time in Chennai

Share your GSTIN and how many invoices you have a month. We'll quote a fixed fee and start from your next return.

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