☎️ +91 9650389968 📩 info@rkassociates.biz 📍 Darbhanga, Bihar, IN

Professional GST Return Filing Service — Accurate, Timely & End-to-End

Expert GST return filing for GSTR-1, GSTR-3B, GSTR-9, CMP-08 & GSTR-9C. We manage GSTR-2B reconciliation, supplier follow-up, e-invoice & e-way bill compliance and GST portal issues.

  • Includes: Monthly GSTR-3B • GSTR-1 • Annual GSTR-9 • GSTR-9C • CMP-08
  • Service Area: Bihar (Darbhanga, Patna, Supaul, etc.) & Pan-India online GST filing
Get Started — Free Consultation Read: GST Return Filing Online in Bihar
GST Return Filing

Complete GST Return Filing — What we do

R K Associates offers end-to-end GST return filing services tailored to businesses of all sizes — traders, manufacturers, service providers, e-commerce sellers and MSMEs. Our team handles filing, reconciliation, corrections, notices and proactive advisory so your GSTIN remains clean and risk-free.

We focus on accuracy and compliance: mapping invoices to the correct HSN/SAC, matching Input Tax Credit with GSTR-2B, preparing monthly summaries for GSTR-3B, uploading outward supplies for GSTR-1, and preparing the consolidated GSTR-9 and GSTR-9C when required.

Services we handle

GSTR-1 Filing (Monthly / Quarterly)

Outward supplies — B2B, B2C, exports, credit/debit notes and HSN summary. Proper HSN mapping and invoice formatting for smooth ITC flow.

GSTR-3B Filing

Monthly summary return — tax liability, ITC claim, reverse charge and payable tax calculation with interest & penalties check.

GSTR-9 & GSTR-9C (Annual)

Annual reconciliation, books-to-returns matching and certification for eligible taxpayers.

GSTR-2A / 2B Reconciliation

Vendor follow-up, mismatch resolution and maximising eligible ITC while isolating ineligible claims.

GST Return Filing Process — Fast, Simple & 100% Accurate

Our GST return filing process is designed to be quick, transparent and error-free. Whether you file GSTR-1, GSTR-3B, CMP-08, or Annual GSTR-9, we follow a structured workflow based on GST rules and the latest notifications issued on the GST Portal.

  1. Data Collection
    You simply share invoices and records (Excel, Tally, Busy, Zoho, PDFs). We organise sales, purchases, credit/debit notes and import/e-commerce data.
  2. Validation & Cleanup
    We verify invoice details, GSTIN, HSN/SAC codes, tax rates, RCM entries and remove duplicates. This ensures your GSTR-1 and GSTR-3B stay fully compliant.
  3. GSTR-2B ITC Matching
    We compare your purchase register with GSTR-2B and identify: missing supplier uploads, ineligible ITC, mismatches and excess claims. A clear reconciliation report is shared for transparency.
  4. Prepare Returns (GSTR-1 & GSTR-3B)
    We prepare draft returns and share a working summary. This includes outward supplies, ITC available, RCM entries and tax payable. Any corrections needed are done before filing.
  5. Review, Pay & File on GST Portal
    After your approval, we file returns securely using OTP/DSC. We assist in challan creation and tax payment if required. ARN (Acknowledgement Reference Number) is shared instantly.

    If you want to follow a complete step-by-step guide, please click on the button below:

    Challan Create & Tax Payment

Important: Filing dates and requirements are governed by official notifications issued time to time on the GST Notifications & Updates page. We continuously monitor these updates to ensure your GST returns remain compliant and on time.

Industry-specific expertise

Our consultants are experienced with nuances across sectors — manufacturing, retail, logistics, restaurants, construction, e-commerce and professional services. We customise the filing workflow to your business processes and ERP (Tally, Busy, Zoho Books, QuickBooks).

Key benefits of using our service

  • Timely filings to avoid late fees & interest
  • Maximum eligible ITC through precise reconciliation
  • Reduction in audit & notice risk
  • Dedicated GST consultant & transparent pricing
  • Portal issue resolution & e-invoice / e-way integration
  • Pan-India online service with local knowledge (Bihar)

GST Return Due Dates & Mandatory Filings — What You Must Know

Staying on top of GST return due dates and mandatory filings is critical to avoid late fees, interest and GST notices. Below we summarise the common return types, filing frequency, and typical due dates. Note: exact due dates are subject to government notifications and periodic extensions — always confirm on the official GST portal before filing.

Return / Form Who files Typical due date / frequency Purpose
GSTR-1 All registered taxpayers (monthly/quarterly depending on turnover & QRMP) Typically 11th of the next month for monthly filers; quarterly filers under QRMP file on notified dates (subject to notification). Details of outward supplies (invoices) — ensures recipients can claim ITC.
GSTR-3B Regular taxpayers (monthly) & QRMP taxpayers (quarterly) Typically 20th of the next month for many taxpayers; for some categories/states due dates may be on the 22nd/24th (or as notified). Summary return — tax liability, ITC, and payment of GST.
IFF (QRMP) / GSTR-1 for QRMP Taxpayers opted into QRMP Invoice Furnishing Facility (IFF) for QRMP — typically around the 13th of the month (for the two months inside a quarter); quarterly GSTR-1 filed on the notified due date. Allows QRMP taxpayers to report certain B2B invoices monthly while filing GSTR-1 quarterly.
GSTR-9 / GSTR-9C Annual filers — taxpayers above prescribed thresholds Annual — due as per government notification (file once a year; reconcile books to annual return). Annual consolidation and reconciliation of returns and accounts; audit certification where applicable.
GSTR-7 (TDS) / GSTR-8 (TCS) Entities deducting TDS / e-commerce operators collecting TCS Typically mid-month due dates (check portal/notifications for exact dates). Report TDS collected under GST and TCS by e-commerce operators.
GSTR-5 / GSTR-6 Non-residents / Input Service Distributors (ISD) Monthly filing (dates vary — check portal). Specialised returns for non-residents and ISDs respectively.
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Mandatory filings & priorities:

if you have limited resources or pending returns, prioritise (1) GSTR-3B to avoid interest & GSTIN suspension, (2) GSTR-1 / IFF reconciliation so your customers’ ITC isn’t blocked, and (3) annual returns (GSTR-9) when due. Timely reconciliation of GSTR-2B vs your books helps prevent notices and reduces audit risk.

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Time-bar / Filing window alert:

note that the GSTN has introduced/time announced rules which may time-bar filing of returns beyond a certain window — for example a three-year cut-off is in force for many returns (confirm current status on GST portal). If you have returns older than the permitted window, get professional help immediately to regularise within permitted remedies.

Frequently Asked Questions

1. What documents are required for GST return filing?

Sales & purchase invoices, credit/debit notes, expense bills, e-commerce settlement reports, e-way bill data and Tally/Busy extracts. Bank statements are optional but helpful.

2. Can you file returns for previous months?

Yes — late filing is possible. We calculate interest and late fees and submit the required returns, reconciling books for those periods.

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

GSTR-1 reports outward invoices in detail. GSTR-3B is a monthly summary of liability and ITC — both must reconcile to avoid mismatches.

4. What is GSTR-2B and why is it important?

GSTR-2B is an auto-generated ITC statement for recipients. It helps determine eligible ITC and is static for the tax period — we use it for reconciliation.

5. How do I claim Input Tax Credit (ITC)?

ITC is claimable if supplier has uploaded invoices, goods/services used for business, and invoices meet GST conditions. We reconcile and document eligibility.

6. What are common causes of GSTR-1 vs GSTR-3B mismatch?

Timing differences, wrong GSTINs, invoice omissions, incorrect tax rates, and data entry errors are common causes. We resolve these via reconciliation and supplier follow-up.

7. How is interest on late GST payment calculated?

Interest is typically charged at a percentage per annum on unpaid tax from due date until payment date. Exact rate should be checked for the period — we calculate it for late filings.

8. What is QRMP scheme and who can use it?

QRMP (Quarterly Return Monthly Payment) allows small taxpayers (below threshold) to file GSTR-1 & GSTR-3B quarterly while making monthly payments. We advise eligibility and help opt-in.

9. How do I file nil returns?

Nil returns are filed when there are no outward supplies and no input tax credit to claim. Filing is simple — we can file on your behalf to keep compliance status active.

10. Can composition taxpayers file regular returns?

Composition taxpayers follow CMP-08 (quarterly) and an annual return. If a business opts to shift to regular scheme, different filing rules apply — we advise on pros and cons.

11. What is e-invoicing and who needs it?

E-invoicing is electronic generation of B2B invoices through the Invoice Registration Portal for businesses above threshold turnover. We assist with integration and generation for eligible clients.

12. How do I handle supplier non-upload of invoices?

Supplier non-upload blocks ITC. We prepare exception reports, communicate with suppliers, and advise how to document your claim if supplier corrections are delayed.

13. What is GSTR-9 and who must file it?

GSTR-9 is the annual return consolidating monthly/quarterly returns and books for the financial year. Eligible taxpayers above threshold must file — we prepare and reconcile it.

14. How are refunds claimed under GST?

Refunds (e.g., tax paid on exports or excess ITC) require application on GST portal with supporting documents. We compile claims and file refund applications correctly.

15. What do I do if I receive a GST notice?

Don't ignore notices. We review the notice, gather documents, draft replies, and represent before authorities where required to reduce exposure.

16. Can GSTR returns be revised?

Returns themselves cannot be revised; however errors can be corrected in subsequent returns and through amendments where allowed. We guide the correct remedy.

17. What is reverse charge mechanism (RCM)?

Under RCM, recipient pays GST on specified supplies instead of supplier. RCM entries must be reported correctly in GSTR-3B; we identify and record them properly.

18. How to handle e-commerce TCS and GSTR-8?

E-commerce operators collect TCS and file GSTR-8. Sellers must reconcile marketplace reports; we assist matching TCS entries and claims.

19. What are HSN/SAC codes and why are they important?

HSN (goods) and SAC (services) classify supplies and determine GST reporting. Correct codes avoid disputes and fines; we map your products/services accurately.

20. What happens if GST returns are not filed for long periods?

Prolonged non-filing may attract heavy penalties, interest, blocking of e-way bills, and eventual GSTIN suspension. We help regularise and limit liabilities.

21. Do you handle GST for exporters and zero-rated supplies?

Yes — we prepare documentation for zero-rated supplies, advise on LUT/bond and help file refund claims where applicable.

22. What is GSTR-7 (TDS) filing and who files it?

GSTR-7 is filed by entities required to deduct TDS under GST. Deductors deposit TDS and report details in GSTR-7; we prepare and file these returns.

23. How do I correct mistakes in already filed returns?

While returns can’t be revised, certain errors are corrected in subsequent returns or through amendments (e.g., credit notes). We recommend the correct path depending on the error.

24. Can non-resident taxable persons file GST returns in India?

Non-resident taxable persons may need to register and file GSTR-5. We assist in compliance and return preparation for non-resident taxpayers.

25. What are the portal/Digital Signature (DSC) issues we might face?

Common issues: DSC not recognized, browser incompatibility, OTP/Aadhaar delays, or portal downtime. We help troubleshoot and file using alternate, compliant methods where allowed.

26. Do you support reconciliation for Tally/Busy/QuickBooks exports?

Yes — we import/export and reconcile data from major ERPs (Tally, Busy, QuickBooks, Zoho) to ensure returns match your books.

Ready to simplify GST filing?

Share your invoices and we’ll take care of the rest. Fast onboarding — online support across Bihar & India.

Call: +91 9650 389 968 📩 Email