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GST Return Terms and Meanings: Complete GSTR Glossary

Tax Garden Compliance Team
June 30, 2026
14 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-1, 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

Key Takeaways

  • This glossary explains every term used in GST returns in plain English, with an example and the common mistake for each.
  • The core monthly cycle is GSTR-1 (outward sales) and GSTR-3B (summary + tax payment), reconciled against GSTR-2B (auto-drafted input tax credit).
  • ITC (Input Tax Credit) is the heart of GST; it can be claimed only on invoices appearing in your GSTR-2B and within the time limit.
  • The supply types confuse most people: Zero-rated (exports/SEZ, refund allowed), Nil-rated (0%), Exempt (no tax, no ITC), and Non-GST are all different.

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.

Looking for expert help with meaning of every term used in GST returns in India? The team at Tax Garden, based in Kondapur, Hyderabad, helps Indian SMEs stay compliant end-to-end: filings, notices, and advisory, all in one place.

Registration and Identifiers

TermMeaningExample / where usedCommon mistake
GSTIN15-character GST Identification Number, your GST identityOn every invoice and returnQuoting a cancelled/suspended GSTIN
GSTGoods and Services Tax, a destination-based indirect taxCharged on supply of goods/servicesTreating it as origin-based
CGST / SGST / IGSTCentral, State, and Integrated GST componentsIntra-state = CGST+SGST; inter-state = IGSTWrong split on the invoice
HSNHarmonized System of Nomenclature, a code for goodsMandatory on invoices and GSTR-1Using the wrong HSN digits
SACServices Accounting Code, the HSN equivalent for servicesOn service invoicesMixing up HSN and SAC
ARNApplication Reference NumberGenerated on registration/refund filingLosing the ARN for tracking
Place of SupplyThe location that decides CGST/SGST vs IGSTOn every transactionWrong place of supply, wrong tax
Composition SchemeSimplified scheme: fixed % of turnover, no ITCFor small taxpayers (see CMP-08)Crossing the turnover limit

GST Return Forms

FormWhat it isWho/whenCommon mistake
GSTR-1Statement of outward supplies (sales)Monthly or quarterly (QRMP)Missing B2B invoices
GSTR-3BSummary return with tax paymentMonthly or quarterlyPaying without ITC reconciliation
GSTR-2ADynamic auto-drafted purchase statementUpdates as suppliers fileTreating it as the ITC basis
GSTR-2BStatic auto-drafted ITC statementGenerated monthly, fixedClaiming ITC not in 2B
GSTR-9Annual returnYearly, above turnover thresholdNot reconciling with 3B/1
GSTR-9CReconciliation statement (self-certified)Yearly, above higher thresholdSkipping when required
CMP-08Quarterly statement-cum-challanComposition taxpayersMissing the quarterly payment
GSTR-4Annual return for compositionYearlyConfusing with CMP-08
GSTR-7 / GSTR-8TDS / TCS returns under GSTDeductors / e-commerce operatorsMissing deductee details
🧠

GSTR-2A vs GSTR-2B: 2A is dynamic and keeps changing as suppliers file. 2B is static, generated once a month, and is the basis for claiming ITC. Always reconcile purchases against 2B. See the ITC and GSTR-2B reconciliation guide.

Input, Output, and Tax Terms

TermMeaningWhy it mattersCommon mistake
ITC (Input Tax Credit)Credit for GST paid on purchasesReduces output tax payableClaiming ITC not reflected in 2B
Output TaxGST charged on your salesPaid via GSTR-3BUnder-reporting outward supply
RCM (Reverse Charge)Recipient pays GST instead of supplierNotified goods/services, unregistered purchasesForgetting to self-invoice and pay
Tax LiabilityNet GST payable (output minus ITC)Settled in GSTR-3BIgnoring interest on late payment
Electronic Cash LedgerTax deposited in cash on the portalPays liability not covered by ITCDepositing under the wrong head
Electronic Credit LedgerBalance of available ITCUsed to set off output taxUsing credit for the wrong tax type
Rule 86B1% cash payment restriction for large taxpayersLimits full ITC set-offNot paying the 1% in cash

Supply Types

TermMeaningGST treatmentCommon mistake
Taxable SupplySupply on which GST is chargedAt the applicable rateWrong rate/HSN
Zero-Rated SupplyExports and supplies to SEZ0% with ITC/refund (via LUT or with tax)Confusing with exempt
Nil-Rated SupplyGoods/services at 0% rate0%, no refund of ITCTreating as exempt
Exempt SupplyNotified exempt goods/servicesNo tax, no ITCClaiming ITC on inputs
Non-GST SupplyOutside GST (e.g., petrol, alcohol)No GST at allReporting under exempt
Composite SupplyNaturally bundled, one principal supplyTaxed at the principal item's rateSplitting it artificially
Mixed SupplyIndependent items sold together for one priceTaxed at the highest rate among themApplying the lowest rate
⚠️

Zero-rated vs Nil-rated vs Exempt: zero-rated (exports/SEZ) lets you claim a refund of input tax; nil-rated and exempt supplies do not allow an ITC refund. Misclassifying exports as exempt forfeits your refund.

Documents

TermMeaningWhen usedCommon mistake
Tax InvoiceThe primary GST document for a taxable supplyOn every taxable saleMissing mandatory fields
Bill of SupplyInvoice for exempt sales or composition dealersWhen no GST is chargedIssuing a tax invoice instead
Debit NoteIssued when taxable value/tax increasesUpward price revisionWrong linkage to original invoice
Credit NoteIssued when value/tax decreases (returns, discounts)Sales returns, post-sale discountMissing the time-limit to report
E-Way BillDocument for movement of goods above a value thresholdTransport of goodsExpired or mismatched e-way bill
E-InvoiceInvoice reported to the IRP and assigned an IRNMandatory above turnover Rs 5 croreNot generating IRN in time
IRNInvoice Reference Number from the e-invoice portalUnique ID for each e-invoiceTreating a non-IRN invoice as valid
QR CodeCode embedded in an e-invoiceVerification of the e-invoiceMissing QR on B2B invoices

Compliance Mechanisms

TermMeaningNoteCommon mistake
QRMPQuarterly Return, Monthly Payment schemeFor turnover up to Rs 5 croreMissing monthly PMT-06 payment
PMT-06Monthly tax payment challan under QRMPFirst two months of a quarterUnderpaying the fixed sum
LUTLetter of Undertaking for exports without taxAnnual, for zero-rated supplyNot renewing the LUT each year
B2BBusiness-to-business supply (registered buyer)Invoice-level detail in GSTR-1Reporting B2B as B2C
B2CBusiness-to-consumer supply (unregistered buyer)Summary-level in GSTR-1Reporting large B2C as B2B
DRC-03Voluntary tax payment formTo pay shortfalls/interestWrong cause-of-payment selected
ASMT-10Scrutiny notice for return discrepanciesDepartment-issuedIgnoring the reply window

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

1. GSTR-2A vs GSTR-2B. 2A is dynamic; 2B is static and is the ITC basis. Reconcile against 2B.

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

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.

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.

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.

6. GSTR-1 vs GSTR-3B. GSTR-1 reports sales invoice by invoice; GSTR-3B is the summary where tax is actually paid. Both must reconcile.

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.

Need Help With GST Returns?

If GST terms and reconciliations are eating your time, hand them over. Tax Garden (4th Floor, CWS One, Kondapur, Hyderabad – 500084, Telangana) files GSTR-1 and GSTR-3B, reconciles ITC against GSTR-2B, manages e-invoicing and e-way bills, and files annual returns for businesses across Hyderabad and India. See our GST compliance services and pricing.

Looking for expert help with GST return filing and ITC reconciliation services in Hyderabad? The team at Tax Garden, based in Kondapur, Hyderabad, helps Indian SMEs stay compliant end-to-end: filings, notices, and advisory, all in one place.

Frequently Asked Questions

What is GSTR-1?

GSTR-1 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-2B.

What is GSTR-3B?

GSTR-3B 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-1 and GSTR-2B.

What is the difference between GSTR-2A and GSTR-2B?

GSTR-2A is a dynamic statement that keeps updating as suppliers file. GSTR-2B 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-2B, 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-1 and GSTR-3B 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-9 and GSTR-9C?

GSTR-9 is the annual GST return summarising the year's supplies, ITC, and tax. GSTR-9C 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-1 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-1 and GSTR-3B, reconciles ITC against GSTR-2B, 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.

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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.

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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 is Tax Garden different from traditional accountants and tax firms 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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