GST Return Filing Services in India
Complete compliance for every GST return type — GSTR-1, GSTR-3B, GSTR-9, GSTR-9C, ITC-04, GSTR-4 and more, filed accurately and on time on the GSTN portal
GST Return Filing — Complete Compliance for Every Return Type
Goods and Services Tax (GST) return filing is one of the most critical and recurring compliance obligations for every GST-registered business in India. Under the GST framework introduced on 1 July 2017, registered taxpayers are required to file multiple returns each month and quarter — declaring their outward supplies, inward supplies, input tax credit (ITC) claims, and net tax liability — through the GSTN (Goods and Services Tax Network) portal. Failure to file returns on time, or filing with errors, attracts late fees, interest, and the cancellation of GST registration in chronic default cases.
At N D Savla & Associates, our GST compliance team in Mumbai provides comprehensive GST return filing services for businesses across all sectors — manufacturers, traders, service providers, exporters, importers, and e-commerce operators. Our services cover every return in the GST return ecosystem: GSTR-1 (outward supply details), GSTR-3B (monthly summary), GSTR-9 (annual return), GSTR-9C (reconciliation statement), ITC-04 (job work returns), GSTR-4 (composition dealers), GSTR-5 (non-resident taxable persons), GSTR-6 (input service distributors), GSTR-7 (TDS deductors under GST), GSTR-8 (e-commerce operators), and GSTR-10 (final return on cancellation).
Headquartered in Andheri East, Mumbai, N D Savla & Associates serves clients across Mumbai, Thane, Navi Mumbai, Pune, and pan-India through our digital compliance infrastructure. Our GST filing team combines deep knowledge of GST law with practical expertise on the GSTN portal — ensuring every return is filed accurately, on time, and with the correct ITC claims.
The GST Return Ecosystem: An Overview
India's GST return system was designed as a cascading three-return system — GSTR-1 (outward supplies by the supplier), GSTR-2 (inward supplies by the recipient, now suspended), and GSTR-3 (consolidated return). When the GSTR-2 system was suspended in 2017, an interim arrangement of GSTR-3B (a simplified monthly summary return) was introduced and has since become the primary tax payment return. The GST Council has progressively rationalised the return system — introducing the QRMP (Quarterly Return Monthly Payment) scheme for small taxpayers, auto-population of GSTR-3B from GSTR-2B, and the e-Invoice system to reduce reporting burden.
Types of GST Returns We File
GSTR-1 — Outward Supply Details
The monthly or quarterly return declaring all outward taxable supplies. It is the primary data source for the GSTN's auto-population of recipients' GSTR-2A and GSTR-2B, so accurate and timely filing directly protects your customers' ITC. See our GSTR-1 Filing Services page for the complete process.
GSTR-3B — Monthly Summary and Tax Payment
The monthly (or quarterly for QRMP taxpayers) summary return through which GST liability is calculated and paid. It summarises outward supplies, ITC claimed, and net tax payable. The output side is not auto-populated from GSTR-1 — each field must be correctly entered to avoid mismatches and notices.
GSTR-2A and GSTR-2B Reconciliation
GSTR-2A is the dynamic auto-populated statement of inward supplies; GSTR-2B is the static monthly ITC statement. Reconciling your purchase register against both is essential to claim accurate ITC. See our GSTR-2A Reconciliation and GSTR-2B Reconciliation services.
GSTR-9 — Annual Return
Consolidates all transactions of the financial year — outward supplies, inward supplies, ITC, taxes paid, and demands or refunds. It must reconcile with the audited financial statements and with monthly GSTR-3B filings. Errors here expose the taxpayer to scrutiny for the entire year's transactions.
GSTR-9C — Reconciliation Statement
A reconciliation statement between the audited annual accounts and the GSTR-9 annual return. For taxpayers with turnover above ₹5 crore, GSTR-9C requires certification by a Chartered Accountant — our team provides both preparation and CA certification.
ITC-04 — Job Work Return
Filed by principal manufacturers who send goods to job workers — reporting goods sent out, goods received back, and goods not returned within prescribed timeframes. Our ITC-04 Filing Services page covers the complete job work return process.
GSTR-4 — Composition Scheme Dealers
Composition scheme taxpayers (up to ₹1.5 crore turnover, or ₹75 lakh for certain states) file GSTR-4 annually. Our team handles GSTR-4 filing alongside the quarterly CMP-08 tax payment challan for composition dealers.
GSTR-7 — GST TDS Returns
Government entities and specified persons deducting TDS under GST Section 51 must file GSTR-7 monthly, declaring TDS deducted and deposited. This is separate from income tax TDS; our GST and income tax teams coordinate on cross-cutting TDS compliance.
GST Return Due Dates at a Glance
| Return | Who Files | Frequency | Due Date |
|---|---|---|---|
| GSTR-1 | Regular taxpayers | Monthly / Quarterly (QRMP) | 11th of following month; 13th for QRMP quarterly filers |
| GSTR-3B | Regular taxpayers | Monthly / Quarterly (QRMP) | 20th of following month; 22nd or 24th for QRMP taxpayers |
| ITC-04 | Principal manufacturers using job workers | Half-yearly | 25 October (Apr–Sep); 25 April (Oct–Mar) |
| GSTR-9 | Regular taxpayers | Annual | 31 December of the following financial year |
| GSTR-9C | Taxpayers above ₹5 crore turnover | Annual | Filed with GSTR-9, with CA certification |
| GSTR-4 | Composition scheme dealers | Annual (with quarterly CMP-08) | As notified, alongside quarterly CMP-08 challan |
| GSTR-7 | TDS deductors under Section 51 | Monthly | Monthly, declaring TDS deducted and deposited |
Historical Context: India's Journey to GST Returns
Before GST, India's indirect tax compliance landscape was fragmented across multiple overlapping systems: Central Excise (ER-1, ER-3, ER-4 returns), Service Tax (ST-3 half-yearly return), VAT (state-specific returns — Maharashtra's VAT return system alone had over a dozen return forms), CST returns, and Entry Tax returns. A medium-sized manufacturer-exporter could be filing 20+ different indirect tax returns annually across multiple portals.
The introduction of GST on 1 July 2017 promised a unified return system — 'one nation, one tax, one return.' The initial design envisaged three returns per month (GSTR-1, GSTR-2, GSTR-3) amounting to 37 returns per year per registration. The GSTR-2 matching and reconciliation system proved operationally unworkable at scale and was suspended in October 2017 after just one cycle, replaced by the simplified GSTR-3B.
Key Milestones in the GST Return System
| Year | Milestone | Significance |
|---|---|---|
| 1 July 2017 | GST introduced | Replaces Excise, Service Tax, VAT, CST and Entry Tax returns with a unified system |
| October 2017 | GSTR-2 suspended after one cycle | GSTR-3B becomes the interim — and now primary — tax payment return |
| 2019 | New Return System (Sahaj and Sugam) proposed | Ultimately not implemented |
| 2020–2023 | E-Invoice rolled out to progressively smaller taxpayers | Invoice-level reporting integrated into GSTR-1, cutting data entry burden |
| September 2020 onward | GSTR-2B introduced | A static, locked ITC statement gives taxpayers predictability in ITC claims |
| January 2021 | QRMP scheme | Small taxpayers file GSTR-1 and GSTR-3B quarterly while paying tax monthly via pre-filled challans |
The GST portal (GSTN) itself evolved significantly — from a system that crashed under the load of filing deadlines in 2017–18 to a relatively stable, feature-rich compliance platform by 2022–23. The integration of e-Invoice data, auto-population of GSTR-3B from GSTR-2B, and the annual return pre-fill from monthly returns have made the portal significantly more intelligent — but also more unforgiving of mismatches.
Our GST Return Filing Process: Step by Step
We follow the same structured monthly cycle for every client, so each return is built on reconciled data rather than assembled against the deadline.
Books Closure and Data Extraction
Each month, we extract the sales register (outward supply data) and purchase register (inward supply data) from your accounting system — Tally, Zoho Books, QuickBooks, or any ERP — and validate the data for completeness: GST registration numbers of parties, HSN/SAC codes, tax rates, place of supply, and invoice formats.
GSTR-1 Preparation and Filing
Outward supply data is classified by return type (B2B, B2C large, B2C small, exports, nil-rated, exempt, credit/debit notes) and uploaded to the GSTN portal as GSTR-1. Our GSTR-1 Filing service covers this in detail. GSTR-1 is filed by the 11th of the following month, or the 13th for QRMP quarterly filers.
GSTR-2B Review and ITC Reconciliation
After GSTR-2B is generated (typically on the 14th of the following month), we reconcile it against the purchase register — identifying ITC available and eligible, ITC where the supplier has not filed GSTR-1 (blocked ITC), ITC on ineligible items under Section 17(5), and excess ITC claimed in prior months. Our GSTR-2B Reconciliation service covers this process in depth.
GSTR-3B Preparation and Filing
GSTR-3B is prepared from the outward supply summary in GSTR-1 and the eligible ITC from GSTR-2B reconciliation. We calculate the net GST liability (IGST, CGST, SGST separately), verify the Electronic Credit Ledger balance, and compute the cash payment required. Tax is paid via the Electronic Cash Ledger before GSTR-3B is filed, due by the 20th of the following month (22nd/24th for QRMP taxpayers).
ITC-04 Filing (Where Applicable)
For clients with job work operations, we file ITC-04 half-yearly — April to September by 25 October, and October to March by 25 April — reporting goods sent to and received back from job workers.
Annual GSTR-9 and GSTR-9C
At year-end, we prepare the GSTR-9 annual return reconciling the full year's outward supplies, ITC, and taxes paid — cross-checking against audited financial statements and against the aggregate of monthly GSTR-3B filings. For eligible taxpayers, we prepare and certify GSTR-9C. GSTR-9 is due by 31 December of the following financial year.
Common GST Return Errors We Prevent
The most frequent GST return errors our team prevents include:
- B2B supply misclassified as B2C, causing the recipient's ITC loss
- Wrong place of supply determination, leading to the wrong tax head — IGST vs CGST/SGST
- ITC claimed on ineligible items under Section 17(5) — blocked credits such as motor vehicles, food, and club memberships
- Excess ITC claim beyond the GSTR-2B auto-population limit
- Late GSTR-1 filing causing customers' GSTR-2B blockage
- HSN/SAC code errors in GSTR-1, mandatory for taxpayers above ₹5 crore
- GSTR-3B vs GSTR-1 mismatch generating ASMT-10 scrutiny notices
- Unreconciled prior-period ITC surfacing only at GSTR-9 stage
When errors do lead to GST notices or demands, our GST Appeal Services team handles the response, rectification, and appellate representation.
Why Choose N D Savla & Associates for GST Return Filing in Mumbai?
All Return Types Under One Roof
From GSTR-1 and GSTR-3B to GSTR-9, GSTR-9C, ITC-04, GSTR-4, GSTR-7, and GSTR-10 — our team files every GST return type. You never need to coordinate between multiple advisors for different returns.
E-Invoice Integration
For clients on e-Invoice, our filing process integrates IRN (Invoice Reference Number) data directly into GSTR-1 preparation — eliminating double-entry and ensuring e-Invoice data and GSTR-1 are always consistent.
GSTR-2B Driven ITC Optimisation
We don't just file returns — we maximise your eligible ITC through systematic GSTR-2B reconciliation and supplier follow-up for missing invoices. Unclaimed ITC is lost revenue.
Zero Late Fee Record
Our structured compliance calendar with advance reminders ensures no client of N D Savla & Associates has paid a late fee due to our delay. Every deadline is tracked from the day of the previous filing.
Notice and Appeal Support
When the GST department issues notices — ASMT-10 (scrutiny), DRC-01 (demand), or show-cause notices — our team responds and, where required, files GST Appeals before the Appellate Authority or GST Tribunal.
Mumbai Base, Pan-India Delivery
Headquartered in Andheri East, we serve clients across Mumbai, Thane, Navi Mumbai, Pune, and the rest of India through our digital compliance infrastructure — with the same monthly cycle wherever you are registered.
Our GST return filing work connects directly with GSTR-1 filing, GSTR-2A reconciliation, GSTR-2B reconciliation and ITC review, and ITC-04 job work filing — plus TDS return filing and TDS return preparation where income tax obligations intersect with GST compliance.
What Timely, Accurate GST Filing Protects
- Your own compliance record — no late fees, no interest, no registration cancellation risk
- Your customers' input tax credit, which depends on your GSTR-1 being filed correctly and on time
- Working capital, through complete and correctly timed ITC claims
- Freedom from ASMT-10 scrutiny notices caused by GSTR-1 vs GSTR-3B mismatches
- A clean annual position, so GSTR-9 and GSTR-9C reconcile without year-end surprises
- Audit readiness, with filed returns, ARNs and reconciliations archived month by month
Frequently Asked Questions — GST Return Filing
What GST returns must every regular taxpayer file monthly?
Every regular (non-composition) GST taxpayer must file GSTR-1 (by the 11th) and GSTR-3B (by the 20th) monthly. Taxpayers with annual turnover up to ₹5 crore can opt for the QRMP scheme — filing GSTR-1 and GSTR-3B quarterly, but paying taxes monthly via pre-filled IFF/challan. GSTR-9 (annual return) is filed once a year by 31 December.
What is the late fee for not filing GSTR-3B?
Late fee for GSTR-3B is ₹50 per day (₹25 CGST + ₹25 SGST) per return — or ₹20 per day if there is no tax liability (nil return). The late fee is capped at ₹10,000 per return. Additionally, interest at 18% per annum on outstanding tax liability accrues from the due date until payment. TDS obligations under income tax that intersect with GST compliance are covered in our TDS Return Filing and TDS Return Preparation services.
Can GST returns be revised after filing?
GSTR-1 can be amended in the subsequent month's GSTR-1 through the amendment tables. GSTR-3B cannot be revised once filed — errors in GSTR-3B must be corrected prospectively in the next month's return, with interest on any short-paid tax. GSTR-9 can be amended before filing. This makes first-time accuracy critical, which is why professional filing support is valuable.
What happens if GSTR-1 and GSTR-3B figures don't match?
GSTN's QRMP system and the department's analytics compare GSTR-1 (outward supply details) against GSTR-3B (tax payment). Significant mismatches trigger ASMT-10 scrutiny notices seeking explanations. Our return filing process includes a pre-filing reconciliation of GSTR-1 vs GSTR-3B to identify and resolve mismatches before they become notices.
Is GSTR-9 filing mandatory for all taxpayers?
GSTR-9 is mandatory for all regular taxpayers except those with annual turnover up to ₹2 crore, for whom it is optional from FY 2020-21 onwards. GSTR-9C (reconciliation statement) is mandatory only for taxpayers with turnover above ₹5 crore. Composition scheme taxpayers file GSTR-9A, waived from FY 2019-20 onwards and now merged into GSTR-4. Our team assesses each client's specific filing obligations. For clients facing GST demands arising from return mismatches, our GST Appeal team provides representation.
Speak to Our GST Experts Today
Monthly, quarterly and annual GST return filing for manufacturers, traders, service providers, exporters and e-commerce operators — from Andheri East, Mumbai, across India.
- 📞 +91 98218 32683 | WhatsApp +91 98190 00511
- ✉ nainitsavla@savlagroup.in
- 📍 Suite No. 102, L1, Ashok Premises, Nicholas Road, Andheri East, Mumbai 400069
- 🕐 Monday–Saturday | 10:00 AM – 7:00 PM