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GST Return Terms Explained: Your Complete GSTR Glossary

Tax Garden Compliance Team
June 30, 2026
8 min read
Updated: June 30, 2026
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Quick Answer

Plain-English glossary of every term used in GST returns: GSTIN, HSN, SAC, ITC, RCM, GSTR One, 3B, 2B, 9, 9C, e-way bill, e-invoice, IRN, QRMP, LUT, and supply types.

GST Jargon Slowing You Down?. Talk to a qualified CA at Tax Garden, Hyderabad.

GST Return Terms and Meanings: Complete GSTR Glossary

Who should read this: New GST registrants, small business owners, accountants, and anyone decoding the GST portal.

Reading time: ~14 minutes · Last updated: 30 June 2026 · Applicable period: FY 2025-26 onwards

Written by the Tax Garden Compliance Team (Kondapur, Hyderabad). Reviewed by a Chartered Accountant on our practice team. References are to the CGST Act, 2017 and the GST portal. See Sources.

GST is full of form numbers and abbreviations. This glossary defines each term used in GST returns, grouped the way you meet them: registration and identifiers, the return forms, input and output tax terms, supply types, documents, and the compliance mechanisms like e-way bills and e-invoicing.

Registration and Identifiers

GST Return Forms

Input, Output, and Tax Terms

Supply Types

Documents

Compliance Mechanisms

Deep dives: e-way bill step-by-step, e-invoicing above Rs 5 crore, QRMP scheme, composition scheme, and ASMT-10 response.

The Seven Terms People Get Wrong

Step 1: GSTR TwoA vs GSTR TwoB.** 2A is dynamic; 2B is static and is the ITC basis. Reconcile against 2B.

Step 2: Zero-rated vs Exempt.** Zero-rated (exports/SEZ) allows an ITC refund; exempt does not. Exporting under the wrong label loses the refund.

Step 3: Composite vs Mixed Supply.** Composite = naturally bundled, taxed at the principal item's rate. Mixed = independent items for one price, taxed at the highest rate.

Step 4: Nil-rated vs Exempt vs Non-GST.** Nil-rated has a 0% rate; exempt is notified as exempt; non-GST (petrol, alcohol) is outside GST entirely.

Step 5: ITC eligibility.** ITC is allowed only if the invoice is in 2B, the supplier has paid, you have the goods/services, and you claim within the time limit.

Step 6: GSTR One vs GSTR ThreeB.** GSTR One reports sales invoice by invoice; GSTR ThreeB is the summary where tax is actually paid. Both must reconcile.

Step 7: Debit Note vs Credit Note.** A debit note raises value/tax; a credit note (returns/discounts) lowers it and has a reporting time-limit.

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If GST terms and reconciliations are eating your time, hand them over. Tax Garden Floor 4 Floor, CWS One, Kondapur, Hyderabad, 500084, Telangana) files GSTR One and GSTR ThreeB, handles ITC against GSTR TwoB, manages e-invoicing and e-way bills, and files annual returns for businesses across Hyderabad and India. See our GST compliance services and pricing.

Frequently Asked Questions

What is GSTR One?

GSTR One is the return that reports all outward supplies (sales), invoice by invoice for B2B and summarised for B2C. It is filed monthly, or quarterly under the QRMP scheme, and feeds the buyer's GSTR TwoB.

What is GSTR ThreeB?

GSTR ThreeB is a summary return where you declare total outward supply, input tax credit, and net tax, and actually pay the GST. It must reconcile with GSTR One and GSTR TwoB.

What is the difference between GSTR TwoA and GSTR TwoB?

GSTR TwoA is a dynamic statement that keeps updating as suppliers file. GSTR TwoB is a static statement generated once a month and is the basis for claiming input tax credit. Reconcile purchases against 2B.

What is Input Tax Credit (ITC)?

ITC is the credit for GST paid on business purchases, set off against GST on your sales. It can be claimed only if the invoice appears in your GSTR TwoB, the supplier has paid, you have received the goods or services, and you claim within the time limit.

What is RCM (Reverse Charge Mechanism)?

Under RCM, the recipient pays GST instead of the supplier, for notified goods and services and certain purchases from unregistered suppliers. The recipient must self-invoice and pay the tax, then claim ITC if eligible.

What is the difference between HSN and SAC?

HSN (Harmonized System of Nomenclature) is the classification code for goods. SAC (Services Accounting Code) is the equivalent for services. Both must be quoted correctly on invoices and returns.

What is the difference between zero-rated and exempt supply?

Zero-rated supplies (exports and SEZ supplies) are taxed at 0% but allow a refund of input tax credit, either via an LUT or by paying tax and claiming a refund. Exempt supplies carry no tax and no ITC refund.

What is the difference between composite and mixed supply?

A composite supply is naturally bundled with one principal supply and is taxed at the principal item's rate. A mixed supply is independent items sold together for a single price and is taxed at the highest applicable rate.

What is an e-way bill?

An e-way bill is an electronic document required for the movement of goods above a notified value, generated on the e-way bill portal with details of the consignment, transporter, and vehicle.

What is an e-invoice and IRN?

An e-invoice is an invoice reported to the Invoice Registration Portal, which assigns a unique Invoice Reference Number (IRN) and a QR code. E-invoicing is mandatory for businesses above Rs 5 crore turnover.

What is the QRMP scheme?

QRMP (Quarterly Return, Monthly Payment) lets taxpayers with turnover up to Rs 5 crore file GSTR One and GSTR ThreeB quarterly while paying tax monthly through PMT-06 in the first two months of the quarter.

What is an LUT in GST?

An LUT (Letter of Undertaking) lets exporters make zero-rated supplies without paying IGST upfront. It is filed annually on the GST portal and must be renewed each financial year.

What is CMP-08?

CMP-08 is the quarterly statement-cum-challan through which composition-scheme taxpayers pay their tax. The annual return for composition dealers is GSTR-4.

What is GSTR Nine and GSTR NineC?

GSTR Nine is the annual GST return summarising the year's supplies, ITC, and tax. GSTR NineC is a reconciliation statement between the annual return and the audited accounts, required above a higher turnover threshold.

What is the difference between B2B and B2C supplies?

B2B supplies are made to registered businesses and are reported invoice by invoice in GSTR One so the buyer can claim ITC. B2C supplies are made to unregistered consumers and are reported in summary.

What is a debit note and a credit note in GST?

A debit note is issued when the taxable value or tax of an earlier invoice increases. A credit note is issued when it decreases, for example on sales returns or post-sale discounts, and must be reported within the time limit.

What is a Bill of Supply?

A Bill of Supply is issued instead of a tax invoice when no GST is charged, such as by composition dealers or for exempt supplies.

What is DRC-03?

DRC-03 is the form for making a voluntary GST payment, used to pay tax shortfalls, interest, or amounts demanded, with the correct cause of payment selected.

What is ASMT-10?

ASMT-10 is a scrutiny notice issued when the department finds discrepancies in your returns. You must respond within the time allowed, usually via ASMT-11. See our ASMT-10 response guide.

Where can I get GST return filing help in Hyderabad?

Tax Garden, based in Kondapur, Hyderabad, files GSTR One and GSTR ThreeB, handles ITC against GSTR TwoB, and manages e-invoicing and annual returns for businesses across India. See our pricing page.

Work with the Trusted Tax & Compliance Services in Kondapur, Hyderabad - Tax Garden for expert GST filing, ITR, TDS, ROC, and startup compliance support.

Frequently Asked Questions: Tax Services in Kondapur & Hyderabad

What makes Tax Garden a preferred GST consultant in Kondapur?

Tax Garden is ISO 9001:2015 certified and backs every engagement with Kavach, our ₹50,000 error-protection cover. Our flat-fee, no-surprise pricing and dedicated account manager make us a compliance partner for startups and SMEs in Kondapur's HITEC City corridor.

Why is Tax Garden a trusted tax compliance partner in Hyderabad?

Trust comes from three pillars at Tax Garden. First, transparency: you know the exact fee before you sign up, and it never changes mid-year. Second, certified expertise: our compliance team is qualified, and the firm holds ISO 9001:2015 certification. Third, accountability: Kavach, our unique error-protection plan, covers up to ₹50,000 in service charges for any clerical mistake made by our team.

Is there a reliable tax consultant near me in Kondapur?

Yes. Tax Garden's office is in Kondapur itself (CWS One Building, Hanuman Nagar). You can book an in-person consultation or get everything done fully online via WhatsApp and our client portal. We serve walk-in clients by appointment and remote clients across all of Hyderabad and Telangana.

I want a friendly CA who explains things clearly. Is that Tax Garden?

Absolutely. Every client gets a dedicated account manager reachable on WhatsApp, plain-language explanations of what is filed and why, and proactive reminders before every deadline. No jargon, no surprises, just friendly, expert compliance support from Kondapur.

Where is Tax Garden located in Hyderabad?

Tax Garden is located at 4th Floor, South Block, CWS One Building, Hanuman Nagar, Kondapur, Hyderabad, Telangana 500084. We serve clients across Kondapur, HITEC City, Gachibowli, Madhapur, Jubilee Hills, Banjara Hills, and all of Hyderabad.

Can I get GST filing and registration services in Kondapur?

Yes. Tax Garden offers end-to-end GST services from our Kondapur office: GST registration, GSTR-1, GSTR-3B, GSTR-9 annual returns, ITC reconciliation, e-invoicing setup, and GST notice handling for businesses of all sizes in Kondapur and Hyderabad.

Do you file ITR for salaried employees and businesses in Hyderabad?

Yes. Our Kondapur team files ITR for salaried employees, freelancers, consultants, business owners, LLPs, and companies across Hyderabad. We cover ITR-1 through ITR-6 with complete Chapter VI-A deduction reconciliation, AIS reconciliation, and proactive deadline management.

Which areas in Hyderabad does Tax Garden serve?

Tax Garden's Kondapur office serves clients across Hyderabad including HITEC City, Gachibowli, Madhapur, Jubilee Hills, Banjara Hills, Begumpet, Secunderabad, Ameerpet, Kukatpally, Uppal, LB Nagar, and all of Telangana. Most services are available fully online.

What compliance services does Tax Garden offer for startups in Kondapur?

Tax Garden is a compliance partner for startups in Kondapur and Hyderabad's HITEC City corridor. We handle company incorporation, GST registration, TDS filings, payroll, ROC annual filings, director KYC, and annual ITR filing, all under one flat-fee plan.

How does Tax Garden's compliance model compare to traditional hourly accounting services in Hyderabad?

Unlike traditional accounting practices that charge hourly and are difficult to reach, Tax Garden operates on flat-fee subscription plans with a dedicated account manager, monthly compliance updates, and WhatsApp-first communication. Our AI-powered workflow catches errors before filings are submitted, and Kavach error-protection ensures you are never left alone if something goes wrong.

Sources

Based on the CGST Act, 2017 and CGST Rules, the GST portal and its help documentation (gst.gov.in), CBIC notifications and circulars, and the e-invoice and e-way bill portals. Definitions are explained in plain English; confirm specific rates, thresholds, and dates against the official GST portal and CBIC notifications before filing.

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