Chennai's dedicated GST practice · GSTR-1 due 11th · GSTR-3B due 20th/22nd
Kolathur · PIN 600099

GSTR-1 & GSTR-3B Monthly Filing on Thirupathi Nagar, Kolathur

Whether you are a first-time registrant or an established trader, GSTR-1 & GSTR-3B Monthly Filing in Kolathur deserves a specialist rather than a side job. From Rs.749, our GST-focused Chennai practice runs the entire process on written checklists and senior-reviewed submissions.

We serve businesses on and around Thirupathi Nagar — document pickup, in-person consultation at our Porur office, or fully online over WhatsApp.

  • Handled by senior GST practitioners — 20 years in Chennai tax practice
  • Transparent fee: Rs.749/month onwards — full quote before we start
  • Same-day response on WhatsApp and phone (Mon-Sat: 9.00 AM - 8.00 PM)
  • Doorstep document pickup in Thirupathi Nagar, Kolathur
Rs.749/month onwardsProfessional fee
Filed before the 11th and 20th of every monthTypical timeline
20 yearsIn indirect tax practice
30 minCallback time

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15+Years in GST & Tax Practice
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Local Expertise

Trade Profile and GST Jurisdiction for Thirupathi Nagar, Kolathur

Choosing GSTR-1 & GSTR-3B Monthly Filing in Kolathur is ultimately an act of trust: you are handing over sales figures, purchase records and portal access. Kolathur is India's best-known ornamental fish hub, with breeding farms and aquarium shops clustered off Red Hills Road near Retteri junction, alongside hardware stores and construction material suppliers serving fast-growing residential pockets like Poombuhar Nagar. Many fish breeders and online sellers cross the Rs.40 lakh goods threshold without realising it, making first-time registration and e-commerce reporting the local GST pain point. We earn that trust the unglamorous way — fixed fees honoured, drafts approved by you before filing, acknowledgements shared the same day, and strict confidentiality throughout. Clients across Kolathur, Villivakkam and Perambur have stayed with us for years on precisely this basis.

GST jurisdiction for Kolathur (PIN 600099): businesses here generally fall under the CGST Chennai North Commissionerate. We regularly represent clients from Kolathur before this jurisdiction for registrations, clarifications and notice hearings, and can confirm your exact division and range from your GSTIN. State-jurisdiction cases are handled with the Tamil Nadu Commercial Taxes Department.
GST for Builders and Contractors in Kolathur
Under-construction residential sales are taxed at 1 percent for affordable housing and 5 percent for other units, both without input credit, while commercial works contracts run at 18 percent with credit. Builders must procure at least 80 percent of inputs and input services from registered suppliers each year; any shortfall attracts tax under reverse charge, and cement bought from unregistered dealers is taxed under reverse charge at its full rate regardless of the shortfall test. Development rights and joint development agreements carry their own liability trigger points. A specialist runs the 80-20 computation annually and tracks reverse charge on cement and landowner area sharing so project costing stays accurate.
For GSTR-1 & GSTR-3B Monthly Filing in Kolathur the working timeline is Filed before the 11th and 20th of every month, counted from the point your documents are complete. The realistic completion date is confirmed to you in writing before work starts, and the acknowledgement is shared on WhatsApp immediately after filing.
Why Us

Why Thirupathi Nagar, Kolathur Businesses Choose ChennaiGST

Not a bulk-filing portal. A senior consultant knows your file, your jurisdiction and your deadlines.

ITC Maximisation Within the Law

We match your purchase register against GSTR-2B every period, follow up on invoices your suppliers have not uploaded, and ensure every rupee of eligible input tax credit is claimed. Clients routinely recover credit they were silently losing under self-filing.

Extra Hands During Filing Windows

In the days before the 11th and the 20th, our team runs extended hours and a strict internal queue, so a client who sends data late in the window is still filed on time. Peak-season crush at our end never becomes a late fee at yours.

Reverse Charge Tracked, Not Forgotten

Freight paid to transporters, advocate fees, imported services and other notified supplies attract GST under reverse charge, with self-invoicing where the supplier is unregistered. We maintain a running RCM check every period, because this is the liability self-filers most consistently miss.

E-Invoice and E-Way Bill Fluency

E-invoicing is mandatory once turnover crosses Rs.5 crore and e-way bills apply to goods movements above Rs.50,000. We set up, train and troubleshoot both systems, so your despatches from Kolathur are never held up by a compliance gap at the gate.

Waiver and Amnesty Windows Applied for You

Whenever the GST Council notifies a late-fee waiver or an amnesty window for pending returns or old demands, we check every client's history against it and act within the deadline. Relief that businesses in Kolathur would otherwise read about after it lapsed reaches our clients in time.

Transparent, Fixed Fees Quoted Upfront

You are told the full fee before we begin, in writing. No surprise additions for uploads, revisions or acknowledgements. Government fees and taxes, where applicable, are shown separately, so businesses in Kolathur always know exactly what the engagement costs them.

How It Works

Our Monthly Returns Process

Monthly data collection

At month end we remind you and collect sales invoices, purchase bills and credit notes in whatever format you maintain, including Excel, Tally exports or scanned copies.

GSTR-1 preparation and filing

We prepare invoice-wise outward supply details, validate GSTINs of your B2B customers, summarise B2C supplies and file GSTR-1 on the portal before the 11th.

ITC reconciliation with GSTR-2B

We download your auto-drafted GSTR-2B, match it against purchase records, and claim only eligible input tax credit so that mismatches do not trigger scrutiny notices later.

Tax computation and confirmation

We compute net tax payable after ITC set-off, share the working with you for approval, and generate the payment challan for any cash liability.

GSTR-3B filing and reporting

After your confirmation and tax payment, we file GSTR-3B before the 20th and send you both filed acknowledgements along with a one-page summary of the month.

Checklist

Documents Required for GSTR-1 & GSTR-3B Monthly Filing

Send these on WhatsApp (+91 - 9600 606 444) and we take it forward the same day.

Transparent Pricing

What GSTR-1 & GSTR-3B Monthly Filing Costs in Kolathur

Rs.749/month onwards

Timeline: Filed before the 11th and 20th of every month · No hidden charges · GST invoice provided

Rs.7,999/year

  • Invoice-level GSTR-1 preparation and filing by the 11th
  • GSTR-2B download and input tax credit reconciliation
  • GSTR-3B computation and filing by the 20th
  • Reverse charge liability identification and reporting
  • Challan preparation for tax payment
  • Filed return acknowledgements and monthly tax summary

Call +91 - 9600 606 444

Outcomes

What You Get

Practical outcomes our clients measure us by.

Confidence During Officer Interactions

When a query or verification comes, you respond through a professional who deals with the department regularly, in the department's own language and format, instead of facing an officer's letter alone.

Time Back for Your Actual Business

The hours you or your accountant spent wrestling with the portal, JSON errors and reconciliations every month return to sales, operations and customers, while trained hands manage the compliance in the background.

Compliance That Continues When You Travel

Illness, travel or a family function no longer threatens a deadline. With a standing external process holding your calendar and data trail, filings proceed on schedule whether or not you are at your desk.

Bank and Tender Readiness

Loan applications and government tenders routinely demand GST returns and registration documents. With everything filed and archived properly, you can produce a complete compliance file within hours instead of days.

Advances Treated Correctly

Advances received for services attract GST on receipt while advances for goods generally do not; applying this distinction correctly means you neither prepay tax unnecessarily nor omit a liability that surfaces later with interest.

A Written Trail for Every Decision

Tax positions, rate choices and credit calls are documented as they are made, so if a question arises years later, the reasoning and evidence are on file rather than in someone's fading memory.

Why a Specialist Matters

With ChennaiGST vs Doing It Yourself

AspectWith ChennaiGSTDIY / Unattended
Due-date trackingA maintained compliance calendar with internal cut-offs days before the 11th and the 20th; we chase you for data, not the other way around.Deadlines remembered from memory or phone alarms; one busy week and the return slips past the due date.
Time costRoughly an hour a month to send data and approve drafts; the portal work, reconciliation and follow-up are ours.Hours every month lost to portal errors, JSON files, OTP failures and reworking figures — usually on the due date itself.
Record keepingEvery return, challan, acknowledgement and working paper archived in an organised folder, retrievable in minutes years later.Documents scattered across email, downloads and old phones; assembling records for a bank or an audit takes days.
Risk of noticesGSTR-1, GSTR-3B and GSTR-2B reconciled before filing, removing the mismatches that trigger most scrutiny notices.Inconsistent figures across returns quietly build a mismatch history that surfaces later as ASMT-10 scrutiny or a demand notice.
Portal credentials and dataLogins handled by a small engaged team under strict confidentiality, with credentials stored securely and never passed onward.Passwords circulating on chats with freelancers and part-timers, and no accountability for who has accessed your business data.
Refund claimsRFD-01 filed with complete statements and annexures, tracked from ARN to bank credit, with any deficiency memo answered promptly.Incomplete claims bounce back as deficiency memos while the refund sits unclaimed for months and working capital stays blocked.
GST Law Desk

Recent GST Law You Should Know — relevant to Kolathur businesses

Real notifications, rulings and case law our consultants track — and apply to client filings and notice replies.

Notification

Restaurants moved to 5 per cent without input tax credit from 15 November 2017

Notification No. 46/2017-Central Tax (Rate) dated 14.11.2017 · 2017-11-14

Acting on the GST Council's decision at its 23rd meeting in Guwahati, this notification restructured the rate on restaurant, eating joint, mess and canteen services. From 15 November 2017 the rate became 5 per cent with the express condition that no input tax credit on goods and services used in supplying the service may be taken. Restaurants located in hotels where the declared tariff of any unit of accommodation was seven thousand five hundred rupees or more continued at 18 per cent with full input tax credit.

Why this matters: A standalone Chennai restaurant charges 5 per cent and must write off all GST on rent, equipment and ingredients as a cost, since no credit is allowed.

GST Council

GST slashed on COVID medicines, oxygen equipment and ambulances until 30 September 2021

44th GST Council Meeting (video conferencing) — 12 June 2021 · 2021-06-12

Acting on a Group of Ministers report, the Council cut rates on COVID relief goods until 30 September 2021. Tocilizumab and Amphotericin B moved to nil, while Remdesivir and anti-coagulants such as heparin were reduced to 5 per cent. Medical grade oxygen, oxygen concentrators, ventilators, BiPAP machines, COVID testing kits and specified diagnostic kits all moved from 12 to 5 per cent. Pulse oximeters, hand sanitiser, temperature check equipment and crematorium furnaces moved to 5 per cent, and ambulances from 28 to 12 per cent.

What it means for you: These were temporary rates with a hard expiry, so suppliers must be able to show that concessional invoices fall inside the notified relief period.

Portal Advisory

CBIC answers on what counts as pre-packaged and labelled

CBIC Frequently Asked Questions on GST on pre-packaged and labelled goods, dated 17 July 2022 · 2022-07-17

A day before the change took effect, the Tax Research Unit issued FAQs explaining that the expression takes its meaning from the Legal Metrology Act, 2009 and covers commodities intended for retail sale in packs of up to twenty-five kilograms or twenty-five litres that must bear statutory declarations. A single package above that limit is not covered, nor are packs supplied to an industrial or institutional consumer. Loose sale from a large pack by a retailer does not attract the levy.

Practical effect: A fifty-kilogram rice bag sold as one package stays outside the levy, but the moment it is repacked into labelled retail bags of twenty-five kilograms or less, five per cent applies.

References are provided for general information. Verify the current position on gst.gov.in or cbic.gov.in before acting.

FAQs

Frequently Asked Questions

Straight answers from practising GST consultants — based on the CGST Act, current CBIC notifications and day-to-day portal experience.

How much does GSTR-1 & GSTR-3B monthly filing cost in Kolathur?
Our fee for GSTR-1 & GSTR-3B monthly filing in Kolathur starts at Rs.749/month and is quoted in full before we begin — there are no hidden charges added later. The fee covers professional work end to end: document review, preparation, filing and follow-up until completion. Government fees or portal charges, where applicable, are separate and always shown to you upfront. For an exact quote based on your turnover and business type, call +91 - 9600 606 444 and a consultant will confirm it on the call.
What documents are required for GSTR-1 & GSTR-3B monthly filing in Kolathur?
For GSTR-1 & GSTR-3B monthly filing you will generally need: Sales invoices or sales register for the month, Purchase invoices or purchase register, Credit notes and debit notes issued during the month, GST portal login credentials, Bank statement for the period, if reconciliation is needed. The exact list depends on your constitution — proprietorship, partnership, LLP or company — and on the specifics of your case. Send what you have on WhatsApp to +91 - 9600 606 444 and we will confirm within the same working day exactly what else is needed, so nothing is rejected later for a missing paper.
How is interest calculated if I pay GST late?
Interest is charged at 18 percent per annum under Section 50 of the CGST Act, calculated day-wise from the due date until the date of payment. Following the amendment to Section 50, interest on delayed GSTR-3B filing applies only on the portion of tax paid through the electronic cash ledger, not on the amount settled using input tax credit. For example, a cash liability of Rs.1,00,000 paid 30 days late attracts roughly Rs.1,479 as interest. We compute this precisely before filing so clients in Kolathur never overpay or underpay.
My medical shop also sells supplements, cosmetics and baby products. Do they all take the medicine rate?
No, and this is where pharmacies slip. Only items answering the description of drugs and medicaments take 5% or nil. Nutraceuticals and protein supplements generally attract 18%, beauty and makeup preparations 18%, while daily-use items such as soaps, shampoos and toothpaste came down to 5% in September 2025. Each product must be mapped to its own HSN code and rate in your billing software, and your GSTR-1 HSN summary must reflect that mix. A single wrong default rate applied across the counter creates either short payment or overcharging. ChennaiGST runs product-master audits for pharmacies in Kolathur; call +91 - 9600 606 444 to schedule one.
How do I handle GST when expired medicines are returned to the distributor?
CBIC Circular 72/46/2018 gives two routes for time-expired drugs. The return can be treated as a fresh supply by the person returning them, with a tax invoice if that person is registered, or the original supplier can issue a credit note under Section 34; the tax adjustment on a credit note is available only if it is reported within the statutory window, now 30 November following the financial year of supply. Where the manufacturer ultimately destroys the expired stock, input tax credit relating to the destroyed goods must be reversed under Section 17(5)(h). Pharmacies should reconcile expiry returns quarterly; call +91 - 9600 606 444 for help.
My bank account was debited for a GST challan but the cash ledger shows nothing. What do I do?
This is a payment-communication failure between the bank and the portal, and the prescribed remedy is Form PMT-07, filed under Services, then Payments, then Grievance against Payment. Quote the CPIN, bank name and debit details; the system takes up the discrepancy with the bank, and the amount either credits your ledger once the bank confirms, or is re-credited to your account if the transaction failed. Do not pay twice immediately; most cases resolve within a day or two. If a return due date is pressing, generate a fresh challan and later seek refund of the duplicate. Kolathur clients can call +91 - 9600 606 444 for urgent help.
What is a debit note under GST and when do I issue one?
You issue a debit note when the taxable value or tax charged in the original invoice was less than what is actually payable, for example a price escalation clause kicking in or a rate charged short. Declaring the debit note in GSTR-1 increases your output liability, payable with interest where the shortfall relates to an earlier period. There is no outer time limit on issuing a debit note itself. For your buyer, the debit note is a credit document: following the amendment to Section 16(4), the buyer's time limit to claim ITC runs from the date of the debit note, not the original invoice.
Our institute charges one fee covering classes, study material and hostel. How is it taxed?
A single price for naturally bundled components is a composite supply, taxed at the rate of the principal supply. For a coaching institute, coaching is the principal supply, so the entire lump sum, including printed materials and boarding provided as part of the package, attracts 18 percent. Printing separate invoices for books at nil rate out of a bundled fee is a known audit red flag and is routinely rejected. If the institute genuinely sells optional printed books to anyone at a separate price, those standalone sales can take the book's own treatment. Structure the fee schedule deliberately, not after the demand arrives.
Our company spends on CSR activities. Is the GST paid on those purchases creditable?
Not any more. Section 17(5)(fa), inserted with effect from 1 October 2023, specifically blocks input tax credit on goods or services used for corporate social responsibility activities under Section 135 of the Companies Act. Before this date the position was contested, with advance rulings going both ways, so credits availed for earlier periods may still be defensible on merits if questioned. For current periods, GST on CSR purchases, whether school furniture donated or medical supplies distributed, is a cost. Companies in Kolathur should route CSR procurement through a separate expense code so their monthly reconciliation automatically excludes these invoices from the ITC claim.
What counts as exempt supply when calculating my ITC reversal ratio?
Exempt supplies for Rules 42 and 43 include nil-rated and wholly exempted supplies, and by virtue of Section 17(3) also cover outward supplies on which your recipient pays tax under reverse charge, transactions in securities valued at one percent of sale value, and sale of land or completed buildings valued at stamp duty value. Importantly, interest earned on deposits, loans or advances is excluded from the exempt turnover for this computation for everyone except banking companies and financial institutions. Many businesses in Kolathur inflate their reversal by wrongly including fixed deposit interest, handing over credit the law never asked them to reverse.
What is the last date to file GSTR-9 for a financial year?
GSTR-9 for a financial year is due by 31 December of the following financial year. For example, the annual return for FY 2024-25 is due by 31 December 2025, unless the government extends the date by notification. The reconciliation statement GSTR-9C, where applicable, has the same due date and is filed after GSTR-9. Since annual return preparation involves reconciling twelve months of returns with books, we recommend starting by October rather than December. Businesses in Kolathur can call +91 - 9600 606 444 to book an early slot with our annual returns team.
Why are so many businesses suddenly receiving GST notices these days?
Enforcement has shifted from manual selection to data analytics. The portal now automatically compares GSTR-1 with GSTR-3B and flags tax shortfalls through DRC-01B intimations under Rule 88C, and compares GSTR-2B with GSTR-3B to flag excess ITC through DRC-01C under Rule 88D. E-way bill, e-invoice, TDS and income tax data are also cross-matched, and limitation deadlines for older financial years have pushed departments to clear pending demands in batches. The practical lesson for Kolathur businesses is that mismatches no longer go unnoticed, so month-wise reconciliation before filing is now essential hygiene rather than a year-end exercise.
How do I decide whether to charge CGST plus SGST or IGST on an invoice?
Compare two data points: the location of the supplier and the place of supply determined under the IGST Act. If both fall in the same state, the supply is intra-state and you charge CGST plus SGST; if they fall in different states, it is inter-state and you charge IGST. The buyer's billing address alone is not the test; the place of supply rules for the specific goods or service govern. Common traps include hotel stays, property-linked services and bill-to ship-to chains, where the place of supply departs from the customer's address. Configuring these rules in your billing software saves Kolathur businesses repeated corrections; call +91 - 9600 606 444 for a setup review.
What is the electronic liability register on the GST portal and why should I check it?
The electronic liability register, maintained in Form PMT-01, records every liability raised against your GSTIN: self-assessed tax from returns in Part I, and demands from assessments, adjudication orders and DRC-07 summaries in Part II. Payments and pre-deposits are set off against these entries. You can view it under Services, then Ledgers. Checking Part II periodically matters because demand entries you never noticed can trigger recovery, interest accumulation and refund adjustments. During any refund claim, the officer will offset outstanding register balances, so a clean register speeds up your money. We review all three ledgers in every Kolathur health check.
What are the most common mistakes Chennai businesses make with GST refunds and ITC?
The recurring ones we see across Kolathur are: missing the two-year limitation for RFD-01, mismatches between GSTR-1, GSTR-3B and shipping bill data that stall export refunds, forgetting the April LUT renewal, claiming ITC on invoices absent from GSTR-2B, ignoring blocked credits under Section 17(5), breaching the 180-day supplier payment rule, and treating deficiency memos as rejections instead of refiling within limitation. Each of these is preventable with a simple monthly checklist and a year-end reconciliation. ChennaiGST builds exactly this discipline into its retainer engagements; call +91 - 9600 606 444 if any of these sounds familiar.
By when must I issue a tax invoice when I sell goods?
For goods, Section 31 requires the tax invoice to be issued before or at the time of removal of the goods, where the supply involves movement, or before or at the time of delivery or making the goods available in other cases. In simple terms, the invoice must travel with the goods; a lorry leaving your Kolathur godown without an invoice is exposed to detention even if the e-way bill exists. For continuous supplies of goods with successive statements or payments, the invoice must be issued when each statement is issued or each payment is received.
Do I have to issue an invoice for every small cash sale in my shop?
Not necessarily. Where the value of a supply is less than Rs.200, the buyer is unregistered, and the buyer does not ask for an invoice, you may skip issuing an individual tax invoice. Instead, you must prepare one consolidated tax invoice at the close of each day covering all such small sales. The moment a customer demands an invoice, or the sale is Rs.200 or more, a proper invoice is required. Retail counters typically issue system receipts to every customer anyway, which is cleaner practice, but the daily consolidated invoice is the legal minimum for petty sales.
Should I claim a refund of my accumulated ITC or just carry it forward?
Carry-forward suits businesses whose future output tax will absorb the credit within a few months, since it avoids refund paperwork. A refund makes sense when the credit keeps growing and will never be absorbed, which is typical for exporters under LUT and businesses with inverted duty structure, because idle credit is interest-free money locked with the government. Remember that refunds are only available in categories permitted by Section 54; ordinary accumulated credit from slow sales cannot be refunded. A quick review of your credit ledger trend over six months usually makes the right answer obvious.
What is the process for GSTR-1 & GSTR-3B monthly filing?
The process runs in clear stages: Monthly data collection; GSTR-1 preparation and filing; ITC reconciliation with GSTR-2B; Tax computation and confirmation. A senior consultant reviews your file at each stage rather than passing it to a data-entry desk, and you receive a confirmation with the filed documents once it is complete. You always know which stage your work is at — we update you on WhatsApp instead of leaving you to follow up.
Are there any hidden charges for GSTR-1 & GSTR-3B monthly filing?
No. The fee quoted before we start is the fee you pay. Government fees, portal charges or statutory late fees, where they apply, are separate and disclosed to you in advance with the exact amount. We issue a proper GST invoice for our professional fee. If the scope of work changes — for example, an unexpected notice or additional periods — we tell you the revised fee before doing anything further.
Can I get GSTR-1 & GSTR-3B monthly filing done online without visiting the office?
Yes, the entire process can be handled online. You share scanned documents on WhatsApp or email, we prepare and file everything on the GST portal, and you receive the acknowledgement and filed copies digitally. Businesses in Kolathur regularly complete monthly returns with us without a single office visit. If a physical verification or personal hearing is required by the department, we guide you through it.
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