Introduction
The Goods and Services Tax (GST) has changed the way indirect taxes work in India since it started on July 1, 2017. It was created as a single, unified system called “One Nation, One Tax,” which replaced several old taxes like VAT, excise duty, and service tax. This new system makes it easier for businesses to follow tax rules, increases transparency, and helps reduce tax fraud. Whether you’re running a small business in Mangalore, managing a factory, or providing services across different states, knowing how to file GST returns and follow the rules is essential in 2026. If you don’t follow the rules, you could face big fines, get stuck with delayed refunds, or even lose your business registration.
Understanding GST Basics
GST is a destination-based tax levied on the supply of goods and services. It has four components:
- CGST (Central GST) – collected by the Centre.
- SGST (State GST) – collected by the State.
- IGST (Integrated GST) – for inter-state supplies, collected by the Centre.
- UTGST – for Union Territories.
Tax rates range from 0% to 28%, with most goods and services falling under 5%, 12%, 18%, or 28%. Exempt supplies (e.g., fresh milk, education services) and zero-rated supplies (exports) attract no tax but allow ITC claims.
Who Needs GST Registration?
Registration is mandatory if your aggregate annual turnover exceeds:
- ₹40 lakh (goods) or ₹20 lakh (services) in normal category states.
- ₹20 lakh (goods) or ₹10 lakh (services) in special category states (e.g., North-Eastern states).
Voluntary registration is allowed even below thresholds for claiming ITC or inter-state supplies. Certain persons (e.g., casual taxable persons, non-resident suppliers, e-commerce operators) must register irrespective of turnover.
Composition Scheme is a simplified option for small businesses with turnover up to ₹1.5 crore (₹75 lakh for some services). You pay a flat tax on turnover and file fewer returns, but you cannot collect GST from customers or claim ITC.
QRMP Scheme (Quarterly Return Monthly Payment) is available for taxpayers with turnover up to ₹5 crore. Pay tax monthly via PMT-06 and file GSTR-1 and GSTR-3B quarterly.
Step-by-Step GST Registration Process
- Visit gst.gov.in → Services → Registration → New Registration.
- Fill Part A: PAN, mobile, email → Generate TRN (Temporary Reference Number).
- Verify via OTP → Fill Part B with business details, promoters, bank account, goods/services (HSN/SAC codes).
- Upload documents: PAN, Aadhaar, address proof, bank statement, cancelled cheque, photographs.
- Submit → ARN generated → Approval within 7 working days (or query raised via GST REG-03).
Registration is free and digital. Once approved, you receive a GSTIN (15-digit number). Update bank details mandatorily under 2026 rules to avoid suspension.
Key GST Compliance Requirements
- Invoices: Must include GSTIN, HSN/SAC, tax rates, and unique serial numbers. Start a fresh invoice series every financial year from April 1.
- E-Invoicing: Mandatory if Aggregate Annual Turnover (AATO) exceeds ₹5 crore (updated threshold effective April 2026 for certain taxpayers). Generate IRN (Invoice Reference Number) via Invoice Registration Portal.
- Accounts & Records: Maintain books for 72 months (6 years). Reconcile monthly with GSTR-2B.
- E-Way Bill: Required for inter-state movement of goods above ₹50,000 (or state-specific limits). Generate Part A & B on ewaybill.gov.in.
Input Tax Credit (ITC) and Reconciliation
ITC is the backbone of GST. Claim it only if:
- Supplier has filed returns and paid tax.
- Invoice appears in GSTR-2B.
- Goods/services used for business (not blocked credits like motor vehicles).
Reconcile GSTR-2B with your books every month. Mismatches block GSTR-3B filing under new 2026 rules. File ITC-04 for job work. Annual reversal of common ITC (Rule 42/43) by September.
Recent GST Updates in 2026 You Must Know
- January 1, 2026 onwards: Mandatory bank account details in GST profile. Non-compliance blocks operations and may suspend registration.
- April 1, 2026 onwards: Fresh LUT (Letter of Undertaking) in Form RFD-11 for zero-rated exports. New invoice series mandatory. E-invoicing threshold tightened.
- Returns blocked for non-compliance (ledger mismatches, pending liabilities).
- Stricter real-time data matching via AI-driven tools.
These changes make compliance fully system-driven—manual errors can halt your business instantly.
Common Pitfalls and Best Practices
Pitfalls:
- Wrong HSN/SAC classification.
- Delayed ITC claims (deadline: November 30 of next FY).
- Ignoring GSTR-2B reconciliation.
- Missing e-way bill or e-invoice generation.
- Late filing beyond 3-year limit.
Best Practices:
- Use Tally or GST-compliant software for auto-reconciliation.
- Reconcile monthly, not year-end.
- Train staff on portal navigation.
- Maintain digital records.
- Opt for Composition/QRMP if eligible to reduce workload.
How Sharada Academy Prepares You for GST Mastery
At Sharada Academy of Professional Studies in Mangalore, we don’t just teach theory we offer real-world, hands-on training. Our short-term courses, which last between 30 to 45 days, cover GST concepts, calculations, online filing, uploading of GSTR-1 and GSTR-3B, generating e-way bills, and integrating Tally with real business invoices. You’ll learn how to correct errors, reconcile input tax credits, and prepare compliance reports based on the latest 2026 regulations. Our trainers are experienced tax professionals who guide you throughout the process. We also provide placement assistance. Whether you’re a recent graduate, an accountant, or a business owner, our practical approach helps you file GST confidently and assist your clients in avoiding penalties.
Conclusion
GST filing and compliance in India is no longer optional—it’s a daily business necessity. With stricter 2026 rules like mandatory bank linking, 3-year filing limits, and real-time matching, staying updated is critical to avoid penalties and unlock seamless ITC refunds. A well-maintained compliance system not only saves money but also builds credibility with banks and clients.
Mastering GST is easier when you learn it practically. Enrol in Sharada Academy’s Advanced GST Filing & Tally Course today and turn compliance into a career advantage. Visit sharadaacademy.in or call us at our Mangalore centre to book your seat. Don’t just survive GST—thrive with expert training!
