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50

CGST Act · Section 50

Interest on delayed payment

☐ For tax payment delay, has 18% interest been computed? ☐ Has Notification 13/2017-CT rate been applied? ☐ For late returns under s. 39 , has FA 2021 proviso net cash liability framework been applied? ☐ Has distinction between s. 73 /74…

Section 50 compliance — checklist (19 items)

Section 50 compliance — checklist (19 items)

☐ For tax payment delay, has 18% interest been computed?

☐ Has Notification 13/2017-CT rate been applied?

☐ For late returns under s. 39, has FA 2021 proviso net cash liability framework been applied?

☐ Has distinction between s. 73/74 proceedings and regular delay been made?

☐ Has interest computation from day succeeding due date been done?

☐ Has Rule 88B operational framework been applied?

☐ For wrongly availed AND utilised ITC, has 24% interest been computed?

☐ Has distinction between availed and availed-and-utilised been made?

☐ For historical periods, has FA 2021 retrospective framework been applied?

☐ Has Bharti Airtel substance-over-form discipline been applied?

☐ Has Mafatlal procedural-fairness framework been observed?

☐ Has Mohit Minerals constitutional framework been applied?

☐ Has Vatika prospective-operation been applied?

☐ Has Modern Dental proportionality framework been applied?

☐ Has documentary trail of computation been preserved?

☐ Has coordination with s. 73/74 framework been done?

☐ Has Whirlpool framework been considered for disputes?

☐ Has the file been reviewed for audit-defensibility?

☐ Has coordination with broader compliance framework been done?

Worked examples — five live scenarios

Example 1 — Net cash liability interest (FA 2021 framework)

Facts: GSTR-3B for Aug 2025 filed 30 days late. Gross tax liability Rs. 1 lakh. ITC Rs. 80,000. Net cash payment Rs. 20,000.

Analysis: Sub-s. (1) proviso — late return under s. 39 (not s. 73/74 proceedings). Interest on net cash Rs. 20,000 only. 30 days × Rs. 20,000 × 18% / 365 = Rs. 296. Not gross Rs. 1 lakh.

Result: FA 2021 net cash liability framework — significant relief.

Example 2 — s. 73/74 proceedings interest

Facts: Department initiates s. 73 SCN for under-paid tax FY 2022-23.

Analysis: Sub-s. (1) proviso does not apply for s. 73/74 proceedings. Interest on gross liability (pre-FA 2021 framework continues for proceedings). Megha Engineering pre-FA-2021 framework operative for s. 73/74. Practitioner advice — substantive defence + interest computation framework.

Result: Gross liability interest for proceedings.

Example 3 — Wrongly availed AND utilised ITC

Facts: ITC Rs. 5 lakh wrongly availed and utilised for output tax payment.

Analysis: Sub-s. (3) — 24% interest. ITC was both availed AND utilised. Rule 88B framework. Practitioner discipline — interest computation + reversal coordinated.

Result: 24% interest framework operative.

Example 4 — Availed-not-utilised ITC carve-out

Facts: ITC Rs. 3 lakh wrongly availed but never utilised (cash ledger payment).

Analysis: Sub-s. (3) — 24% interest only on 'availed AND utilised'. Availed-not-utilised carve-out under Rule 88B. No sub-s. (3) interest. Reversal framework only.

Result: Carve-out framework operates.

Example 5 — FA 2021 retrospective application

Facts: FY 2018-19 interest dispute. Pre-FA 2021 Megha Engineering framework applied originally.

Analysis: Notification 16/2021-CT — FA 2021 retrospective from 1-Jul-2017. Net cash liability framework applies retrospectively. Practitioner advice — for past liability, FA 2021 framework recovery / refund.

Result: Retrospective framework relief.

Planning and litigation strategy

  • • For tax payment delay, compute interest accurately.
  • • Apply FA 2021 proviso net cash liability framework.
  • • Distinguish s. 73/74 proceedings for proviso applicability.
  • • Apply 18% rate for tax delay; 24% for wrongly availed AND utilised ITC.
  • • Distinguish availed vs availed-and-utilised under sub-s. (3).
  • • Apply Rule 88B operational framework.
  • • For historical periods, apply FA 2021 retrospective framework.
  • • Apply Bharti Airtel substance-over-form discipline.
  • • Apply Vatika prospective-operation framework.
  • • Coordinate with s. 73/74 recovery framework.
  • • Coordinate with State / UTGST parallel framework.
  • • Build precedent file on s. 50 jurisprudence.
  • • Train compliance teams on interest framework.
  • • Maintain readiness for interest disputes.
  • • Apply Mafatlal procedural-fairness framework defensively.

Litigation defence

  • • For interest disputes, plead net cash liability framework + FA 2021 retrospective.
  • • Apply Mafatlal procedural-fairness framework.
  • • Use Bharti Airtel substance-over-form discipline.
  • • Apply Vatika prospective-operation framework.
  • • Plead Mohit Minerals constitutional framework.
  • • Use Whirlpool framework for writ jurisdiction.
  • • Apply Calcutta Discount Co. for jurisdictional discipline.
  • • Plead Modern Dental proportionality.
  • • For sub-s. (3) disputes, plead availed-not-utilised carve-out.
  • • For Megha Engineering framework disputes, plead FA 2021 retrospective application.
  • • Build precedent file on s. 50 jurisprudence.
  • • Coordinate with State / UTGST parallel framework.
  • • Maintain readiness for interest litigation.
  • • Use Maneka Gandhi procedural-fairness for natural-justice anchor.
  • • Apply Dilip Kumar discipline where applicable.
  • • Coordinate with broader compliance defence.

Cross-references

  • • Section 49 (Payment framework)
  • • Section 39 (GSTR-3B framework)
  • • Section 73 (Non-fraud recovery — proviso non-applicability)
  • • Section 74 (Fraud recovery — proviso non-applicability)
  • • Section 16 (ITC eligibility)
  • • Section 41 (Self-assessed ITC)
  • • Rule 88B (Interest computation framework)
  • • Notification 13/2017-CT (18% rate)
  • • Notification 16/2021-CT (FA 2021 retrospective)
  • • Notification 6/2017-CT(R) (24% rate)
  • • Megha Engineering v UoI (Telangana HC 2019)
  • • Section 9 (Levy framework)
  • • Section 16 (ITC eligibility)
  • • Section 17 (Apportionment)
  • • Section 37, 38, 39 (Returns)
  • • Section 41 (Self-assessed ITC)
  • • Section 73, 74 (Recovery)
  • • Section 79 (Recovery modes)
  • • Section 122 (Penalty)
  • • Section 161 (Rectification)
  • • Article 246A, Constitution of India (concurrent legislative power)
  • • Rules 85-88B (Payment + interest framework)
  • • Rule 86B (99% cap)
  • • Notification 4/2017-CT (Common Portal)
  • • Mohit Minerals (2022) 10 SCC 700 (constitutional architecture)
  • • Vatika Township (2014) 367 ITR 466 (prospective operation)
  • • Mafatlal Industries (1997) 5 SCC 536 (procedural framework)
  • • Bharti Airtel v UoI (2021) 11 SCC 374 (substance over form)
  • • Whirlpool Corporation (1998) 8 SCC 1 (writ jurisdiction)
  • • Calcutta Discount Co. AIR 1961 SC 372 (jurisdictional limits)
  • • Modern Dental College (2016) 7 SCC 353 (proportionality)
  • • Maneka Gandhi (1978) 1 SCC 248 (procedural fairness)
  • • Dilip Kumar (2018) 9 SCC 1 (strict construction)
  • • Megha Engineering v UoI (Telangana HC 2019) on s. 50 interest framework