The CGST Rules, 2017 prescribe detailed procedures for implementing the CGST Act. From registration and invoicing to ITC claims, refunds, and appeals — this guide covers all 23 chapters with focus on the most business-critical rules.
Rule 1: Short title, commencement, and application
Defines scope of CGST Rules. Applies to all registered persons and GST administrators.
Rules 2-7: Intimation, effective date, conditions, validity, withdrawal of composition levy
Composition scheme eligibility: turnover ≤ ₹1.5 Cr (goods), ≤ ₹50L (services). Tax rate: 1% (manufacturers), 5% (restaurants), 6% (others). Cannot collect tax from customers, no ITC allowed.
Rules 8-26: Application, verification, deemed approval, amendment, cancellation, revocation
Rule 8: Application in REG-01. Rule 9: Verification within 7 working days. Rule 10: Deemed approval if no action in 7 days. Rule 21: Cancellation grounds (6 months no return, registration by fraud). Rule 22: Revocation process. Rule 25: Physical verification requirements.
Rules 27-35: Value of supply for related persons, agent, notional interest, second-hand goods
Rule 27: Supply between related persons — value = open market value, or cost + 10%. Rule 28: Supply through agent. Rule 30: Notional interest (free deposits from tenants). Rule 32: Specific valuations for air travel, life insurance, second-hand goods. Rule 35: Value including all incidental expenses.
Rules 36-45: Conditions for ITC, reversal, blocked credits, ITC on capital goods, job work
Rule 36: Documentary requirements for ITC (tax invoice, debit note). Rule 37: Reversal if supplier not paid within 180 days. Rule 38: Claim of ITC by banking/financial institutions (50% option). Rule 42-43: ITC apportionment for exempt+taxable supplies. Rule 44: Annual return ITC reconciliation.
Rules 46-58: Tax invoice, bill of supply, receipt voucher, payment voucher, refund voucher, e-way bill
Rule 46: Tax invoice must contain 16 prescribed fields. Rule 48: Manner of issuing invoice (original + duplicate + triplicate). Rule 49: Bill of supply (for exempted/composition). Rule 55: Delivery challan (for job work, sale on approval). Rule 138: E-way bill for movement >₹50,000.
Rules 56-58: Maintenance of accounts, records for goods, period of retention
Rule 56: Every registered person must maintain: production/manufacture records, inward/outward supply details, stock register, ITC availed/utilized records. Retention: 72 months from the due date of furnishing annual return. Electronic records acceptable if properly backed up.
Rules 59-84: GSTR-1, GSTR-2A/2B, GSTR-3B, GSTR-4, GSTR-5, GSTR-6, GSTR-7, GSTR-8, GSTR-9/9C
Rule 59: GSTR-1 (outward supplies) by 11th/13th of next month. Rule 61: GSTR-3B (summary + payment) by 20th/22nd/24th. Rule 62: Auto-assessed GSTR-3B if not filed (best judgment). Rule 80: GSTR-9 annual return by Dec 31. Rule 80(3): GSTR-9C reconciliation if turnover > ₹5 Cr.
Rules 85-88: Electronic ledgers, payment by challan, interest, utilization of amount in electronic credit ledger
Rule 85: Electronic cash ledger (deposits/payments), credit ledger (ITC), liability ledger (tax dues). Rule 86A: Restriction on ITC utilization (blocking by Commissioner). Rule 86B: Minimum 1% cash payment if ITC > 99% of output tax. Rule 87: PMT-06 challan for tax payment.
Rules 89-97: Application, relevant date, grant of provisional/final refund, interest on delayed refund
Rule 89: RFD-01 application. Rule 89(4): Refund of ITC on zero-rated supplies (exports). Rule 89(5): Refund on inverted duty structure. Rule 91: Grant of provisional refund (90% within 7 days). Rule 93: Credit to Consumer Welfare Fund if unjust enrichment.
Rules 98-103: Self-assessment, provisional assessment, scrutiny of returns, audit by department, special audit
Rule 99: Provisional assessment (when value/rate cannot be determined). Rule 100: Scrutiny of returns — notice in ASMT-10 for discrepancies. Rule 101: Department audit — 15 days notice, completed within 3 months (extendable by 6 months). Rule 102: Special audit — ordered by Commissioner, conducted by CA/CMA.
Rules 103A-107: Application, procedure, appeal, rectification
Rule 104: Application in ARA-01 with ₹5,000 fee. Questions covered: classification, rate, time/place/value of supply, ITC admissibility, registration requirement. Rule 106: Appeal to Appellate Authority within 30 days. Ruling binding on applicant and jurisdictional officers (but only for the specific applicant).
Rules 108-116: Appeal to Appellate Authority, Appellate Tribunal, High Court, Supreme Court
Rule 108: First appeal — within 3 months to Appellate Authority. Pre-deposit: 10% of disputed tax. Rule 110: Appeal to Tribunal — within 3 months, pre-deposit 20% (max ₹50 Cr). Rule 113: Appeal to HC on substantial question of law. Rule 116: Rectification of errors.
ITC available only to the extent of invoices appearing in GSTR-2B. From January 2025: 100% match required (zero tolerance). Earlier: 110%, then 105%. This means: if your supplier hasn't uploaded invoice → you CANNOT claim ITC. Practical impact: enforce supplier compliance, reconcile GSTR-2A/2B monthly.
If value of taxable supply (other than exempt and zero-rated) in a month exceeds ₹50 lakh, you must pay minimum 1% output tax in cash (electronic cash ledger). Cannot be 99%+ from ITC. Exceptions: MD/partners have paid >₹1 lakh income tax in each of last 2 years, or registered person has received refund >₹1 lakh in preceding FY.
Commissioner can block ITC in electronic credit ledger if there are 'reasons to believe' that ITC was fraudulently availed. Order in DRC-01A. Blocking valid for 1 year (extendable). Taxpayer can file reply/objection but cannot use blocked ITC until order is withdrawn. Used extensively against fake invoice chains.
If you claim ITC on a purchase but don't pay the supplier within 180 days from invoice date: you MUST reverse the ITC claimed. Add back to output tax liability with interest. If you pay later: ITC can be re-claimed. Tracked via GSTR-3B. Practical tip: automate payment tracking against invoices.
If you make both taxable and exempt supplies: ITC must be apportioned. Common credit allocated based on turnover ratio. Rule 42: Input/input services apportionment. Rule 43: Capital goods apportionment. Annual reconciliation required in GSTR-9. Reversal for exempt portion mandatory.
E-way bill required for movement of goods exceeding ₹50,000 in value (single invoice). Generated on ewaybillgst.gov.in or via SMS/API. Valid for: 100 km/day (regular vehicle), 200 km/day (over-dimensional cargo). Part-A: supply details, Part-B: transport details. Penalties for non-compliance: confiscation + tax + penalty.
The CGST Rules, 2017 contain 164 rules organized in 23 chapters. They cover everything from registration (Ch III, Rules 8-26) to refund (Ch X, Rules 89-97) to appeals (Ch XIII, Rules 108-116). Rules are notified by the Central Government under Section 164 of the CGST Act and are regularly amended (30+ amendments since 2017). Key recent amendments: Rule 36(4) ITC restriction tightened, Rule 86B cash payment requirement added, Rule 89 refund formula modified.
The CGST Act, 2017 is the primary legislation passed by Parliament. It contains 174 sections covering the legal framework: taxable events, rates, ITC, registration, returns, assessment, offences, penalties, and appeals. The CGST Rules, 2017 are subordinate legislation — they prescribe the detailed procedure for implementing the Act. Example: Act Section 16 says 'ITC available subject to conditions' → Rules 36-45 prescribe the actual conditions, documentation, and reversal procedures. Rules cannot override the Act but can fill in procedural details.
Top 10 rules every business must know: (1) Rule 36(4) — ITC matching/restriction, (2) Rule 86B — 1% cash payment, (3) Rule 86A — ITC blocking, (4) Rule 37 — 180-day payment reversal, (5) Rule 42-43 — ITC apportionment, (6) Rule 138 — E-way bill, (7) Rule 46 — Tax invoice format, (8) Rule 59-61 — GSTR-1 and GSTR-3B filing, (9) Rule 89 — Refund application, (10) Rule 96 — Export refund. Master these and you're covering 90% of compliance requirements.
CGST Rules are amended frequently — typically 3-5 major amendments per year via notifications. Process: GST Council recommends changes → CBIC issues notification amending specific rules → effective from notified date. Recent major amendments: (1) Rule 36(4): ITC restriction tightened to 100% match (2024), (2) Rule 86B: 1% cash payment rule added (2021), (3) Rule 89: Refund formula modified for inverted duty (2022), (4) Rule 142-161: Demand/recovery rules streamlined (2023). Always check the latest version — a rule from 2017 may have been amended 5+ times.
Official sources: (1) CBIC website: cbic.gov.in/htdocs-cbec/gst/CGST-rules → provides updated rules with all amendments incorporated, (2) GST Portal: gst.gov.in → Legal → Acts & Rules, (3) Tax information portals (Taxmann, Cleartax) — provide annotated versions with case law. For verification: always cross-check against CBIC's notification-wise amendments. Laabam.One auto-tracks rule changes and updates compliance modules accordingly.
Laabam.One implements Rule 36(4) ITC matching, Rule 86B cash payment checks, Rule 138 e-way bills, and all critical CGST Rules automatically.
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