Section 39(9) permits correction of omissions or incorrect particulars in the return for the period in which the error is noticed, including a later return within the same financial year, subject to the statutory deadline and provided the correction does not arise from scrutiny, audit, inspection or enforcement activity. B2B supplies mistakenly reported as B2C and subsequently re-reported as B2B can duplicate entries in Form GSTR-1, inflating reported turnover and tax liability where tax was already paid through Form GSTR-3B. A timely voluntary correction is revenue-neutral, and the resulting GSTR-1/GSTR-3B variance does not establish additional tax liability.

Job-work movements under section 143 permit a principal's goods to move for processing and return under delivery challans, while job-work charges may be separately invoiced. Under Rule 138, either the principal or, for inter-State job work, the registered job worker may generate the e-way bill; its generator and declared value do not alone establish a taxable supply. Where records show principal-owned goods were processed and returned, a return/e-way-bill mismatch requires independent evidence of undisclosed supply, consideration, or tax evasion. Without such evidence, GST, interest, and penalty cannot be sustained.

Input tax credit reversal for exempt cattle-feed supplies is limited to credit actually availed on common inputs, input services, or capital goods used for taxable and exempt supplies. Where no credit was taken on exempt traded goods, no reversal arises; any common input-services credit requires verification and proportionate computation under Rules 42 and 43. Annual-return figures may correct periodic-return declarations, so claimed clerical corrections and supporting records must be examined before differential tax is determined from a GSTR-1/GSTR-9 mismatch. Tax, interest, and penalty liability requires fresh merits determination after that verification and reconciliation, with an effective opportunity to submit evidence and be heard.

Section 107(11) requires the Appellate Authority to confirm, modify or annul the challenged decision or order. Dismissing a rectification appeal solely for multiplicity of litigation, without addressing its grounds or deciding the connected appeal against the original demand, fails to meet that requirement. The absence of a finding on the underlying demand also prevents determination of its merits. Both appeals require fresh, reasoned adjudication after a reasonable opportunity of hearing.

Statutory appellate remedy under the CGST Act ordinarily warrants restraint in writ jurisdiction, but does not bar relief where a recognised exception, including breach of natural justice, is established. Disputed allegations that personal-hearing notices were not served-concerning the registered email address, departmental communications and transmission of virtual-hearing details-require examination of the record. Challenges to consideration of the taxpayer's explanations and the merits of the demand may therefore be addressed by the appellate authority, with all service, hearing and demand-related contentions remaining open in accordance with law.

Section 122(1A) of the Central Goods and Services Tax Act, 2017 operates prospectively because it contains neither an express provision nor a necessary implication conferring retrospective effect. The governing principle is that statutory provisions apply prospectively unless their language clearly establishes retrospectivity. Consequently, penalties under Section 122(1A) cannot be imposed for conduct occurring before the provision came into force.

Regular bail in prosecutions alleging fraudulent GST input tax credit availment requires assessment of the accusation's gravity, punishment, risks of evidence tampering and abscondence, and public interest. Expiry of the statutory custody period, absence of any further recovery or discovery requirement, and the offence being triable by a magistrate weigh against prolonged custody. Ongoing investigation alone does not justify indefinite detention where triple-test concerns can be controlled through conditions. Continued incarceration before a potentially delayed trial would constitute pre-trial punishment and unjustifiably restrict personal liberty; regular bail is appropriate absent extraordinary circumstances.

Restrictions imposed on an electronic credit ledger under Rule 86A(3) of the Goods and Services Tax Rules, 2017 cease automatically upon expiry of one year from their imposition. Once that statutory period has expired, the restriction cannot continue, and the electronic credit ledger must no longer remain blocked on that basis.

Retrospective cancellation of GST registration does not, for statutory-audit purposes, preclude examination of records and compliance for the full notified period where registration existed during that period. Audit is record-based and does not itself determine tax liability, validate returns, or assume taxable supplies after cancellation. Although cancellation preserves pre-cancellation liabilities and obligations, audit authority arises from the statutory audit framework. Separate material non-disclosure of a known pending audit notice in cancellation proceedings defeats the clean-hands requirement and independently bars discretionary writ relief.

GST audit jurisdiction extends to records, returns, input tax credits, refunds and compliance during a period when registration existed, even if registration is later cancelled retrospectively. Retrospective cancellation does not erase the historical fact of registration or place underlying conduct beyond audit; audit authority arises from the statutory audit definition, audit provision and prescribed procedure, rather than the cancellation provision. Audit does not validate returns treated as void or determine tax liability, which remains subject to applicable statutory mechanisms. Material non-disclosure of a pending audit notice in earlier writ proceedings seeking retrospective cancellation can independently bar discretionary writ relief. The writ petition was dismissed, the audit notice remained effective for its stated period, and interim protection was vacated.

Further investigation after expiry of the statutory period, without any remaining recovery or discovery, does not by itself support continued custody in alleged fraudulent input tax credit matters. Where the offence carries a limited maximum sentence and is triable by a Magistrate, risks of interference with evidence, witnesses, or investigation should be assessed under the triple test and addressed through bail conditions. Continued incarceration pending a potentially lengthy trial may amount to pre-trial punishment, contrary to the principle that bail is the rule and jail the exception. Conditions may require cooperation with investigation, attendance at trial, and non-tampering with evidence or witnesses.

Availability of an efficacious statutory appeal ordinarily restrains writ jurisdiction over GST demands, even where breach of natural justice is alleged. Claims of non-service of personal-hearing notices, inadequate virtual-hearing opportunity, or failure to consider explanations do not automatically displace the appellate remedy. Where resolution depends on disputed records concerning registered email addresses, dispatch and communication of notices, hearing particulars, and submitted explanations, the appellate authority is the appropriate forum to examine them. The taxpayer may pursue the statutory appeal with all procedural and merits contentions left open.

Section 17(2) requires input tax credit reversal only to the extent credit on common goods or services supports both taxable and exempt supplies; no reversal arises for wholly exempt traded cattle feed where no credit was availed on its purchase. GSTR-9 may correct figures reported in periodic returns, but a difference between GSTR-1 and GSTR-9 attributed to clerical error requires verification. Credit availability, any reversal, and resulting tax liability require determination after examining records and the reconciliation explanation with an opportunity of hearing.

E-way bill values in job work movements cannot, without independent evidence, be treated as a job worker's taxable turnover. E-way bills record goods movement, and their generation by a person involved in the transaction is not determinative where consignor and consignee particulars are correctly declared. Goods sent by a principal for processing and returned thereafter do not establish a taxable supply by the job worker, who paid tax on job work charges. A mismatch between e-way bill data and GST returns, absent proof of supply or tax evasion, could not sustain the demand. The Tribunal therefore set aside the demand, interest and penalty.

Form GSTR-1 rectification permits correction of B2B supplies mistakenly reported as B2C where invoices and outward-supply statements identify registered recipients. Re-reporting those supplies with March 2020 supplies can duplicate outward supplies, artificially inflate turnover and tax liability, and create an apparent short payment despite tax having been discharged through the corresponding Form GSTR-3B returns. Section 39(9) permits rectification within its outer time limit where the error did not arise from departmental scrutiny, audit, inspection, or enforcement activity; it does not require errors from a financial year to be corrected only in a succeeding financial year. The inflated GSTR-1-based demand was therefore quashed.

Board circulars cannot curtail statutory penalties applicable to fake-invoice transactions. False GST records, invoices issued without actual supply, contradictory admissions, cancelled registrations, and vehicle details inconsistent with goods transport may support penalties for creating fake documents and furnishing false returns with intent to evade tax. A taxpayer's statement under statutory summons may be relied upon without corroboration where it was not obtained by duress or coercion. Taxpayers claiming input tax credit must prove actual receipt of goods and suppliers' tax payment; additional documents cannot be relied on at the appellate stage without compliance with Rule 112. Penalties for unsupported input tax credit and false documents were restored, with bank-balance appropriation and attachment maintained.

Section 76 requires every person collecting an amount as tax to remit it to the Government, irrespective of registered status, composition scheme, exempt supplies, or the passing of input tax credit. Tax invoices and bank records evidencing consideration inclusive of tax establish actual collection for this purpose. Input tax credit is available only within statutory time limits; GSTR-3B returns filed after the prescribed deadline cannot validly be used to utilise time-barred credit. Debits through the electronic credit ledger for such credit are irregular and liable to disallowance, with consequential tax demand, interest, and equivalent penalty.

Portal downtime preventing IRN generation at dispatch did not justify a goods-detention penalty where the commercial invoice, e-way bill and delivery note accurately disclosed the goods, value and tax particulars, and the IRN was generated later. Transportation under a delivery note operated as a safeguard where an invoice could not be issued on removal. Section 129 was treated as addressing clandestine movement and deliberate non-disclosure, not a technical reporting lapse without intent to evade tax; the penalty was therefore set aside. Payment through DRC-03 to secure release of detained goods and vehicle, made under economic duress, did not estop a substantive challenge. The amount paid was refundable with statutory interest after verification.

Mandatory transit-documentation rules require invoices and e-way bills that correspond to goods physically carried at the time of movement. Invoices supplied only after detention, particularly without matching e-way bills, do not cure a movement unsupported by compliant records. Where no authentic, pre-existing ownership records identify the goods at interception, the transporter may be treated as a person other than the owner for penalty purposes. Undocumented garments may be valued using product quality, fabric specifications and prevailing wholesale-market averages where matching invoices are unavailable and buyers cannot be traced; such valuation must rest on objective and rational market indicators.

GST detention penalties can be sustained where invoices, e-way bills and transport documents do not correspond with goods physically verified in transit. Documentary existence alone does not establish coverage of the transported goods; supplier-wise and aggregate weight discrepancies require reconciliation with contemporaneous electronic and transport records. Unsupported challenges to weighment, including those lacking timely objection, independent reweighment or technical evidence, do not negate such discrepancies. Cancellation and regeneration of e-way bills for the same invoice also require explanation. Cumulative material discrepancies established intention to evade tax, resulting in restoration of the original tax and penalty order.