Section 42 - Matching, reversal and reclaim of input tax credit
Reviewed by CA Nikhil Gupta and Kajri Singh · Last reviewed 30 August 2026
Finin2min Summary - Section in 2 Minutes
Historical matching provision omitted from 1 October 2022. Do not apply the old statutory matching mechanism to current periods. Current controls operate through sections 16, 38, 41, GSTR-2B/IMS and rules such as 37A/88D.
Why Section 42 matters
Section 42 (Matching, reversal and reclaim of input tax credit) is the section-level control point within Chapter IX — Returns. Return provisions convert invoice and ITC data into statutory declarations. Cross-return consistency is as important as filing the form itself.
Current-law and amendment control
validation 1 — controlling consolidated Act
India Code — Central Goods and Services Tax Act, 2017. Used for the current chapter/section inventory and consolidated provision status.
validation 2 — independent official cross-check
CBIC Tax Information Portal. Use the Act HTML/PDF and amendment history together with current notifications/circulars.
Transaction-date rule: Never treat today’s consolidated wording, a portal screen or an enacted-but-uncommenced amendment as proof of the law that applied on another date. Fix the relevant tax period first.
Official statutory text
The authoritative provision, footnotes and amendment notes are maintained in the official consolidated Act. This analytical page does not re-typeset amendment markers into the running statutory sentence.
- Open the India Code consolidated CGST Act PDF - as on 11 June 2026
- Open the India Code CGST Act register
- Open the CBIC Tax Information Act explorer
Official-source reference reviewed on 2026-07-28. Apply the version and commencement position relevant to the transaction period.
Clause-by-clause / paragraph-wise decode
Historical matching provision omitted from 1 October 2022. Do not apply the old statutory matching mechanism to current periods. Current controls operate through sections 16, 38, 41, GSTR-2B/IMS and rules such as 37A/88D.
Section–Rule–Form–Notification–Circular bridge
The mapping is a legal concordance, not a round-robin related-link list. It is limited to instruments listed in this repository.
Practical example
A notice citing old section 42 for a post-October 2022 period should be checked against the current legal basis.
Professional alert
Retain the omitted provision only for historical- period analysis.
Finin2min decision path
- Fix the historic tax period first.
- Confirm that the issue arose while the provision was operative.
- Read the historical statutory text and Rules/forms then in force.
- Do not use a current portal workflow to reconstruct an old statutory requirement without evidence.
- Link the conclusion to later replacement provisions where relevant.
Practical case studies
Accounting, ERP & portal touchpoints
Return automation should retain mapping from ledger/tax code to return table, amendment period and source document, with exception reports.
Control: keep the legal conclusion separate from system configuration; document every tax-code/master change and its effective date.
Notice, litigation & evidence risk
Return mismatches are easy for tax systems to identify. Preserve reconciliations and reasons for every material variance.
Evidence hierarchy: source transaction → books/ERP → statutory return/form → portal acknowledgement → legal working → correspondence/order.
Judicial position — how to read precedent
Start with binding Supreme Court authority, then the jurisdictional High Court, other High Courts and GSTAT where applicable. AAR/AAAR rulings are fact- and jurisdiction-sensitive and should not be presented as universal law. Always check whether a decision has been stayed, reviewed, distinguished or overtaken by amendment.
Open the Finin2min provision citator · Open the connected GST case-law module
Common mistakes to avoid
- Filing GSTR-1 and GSTR-3B from separate unreconciled datasets.
- Carrying mismatches indefinitely without a documented action.
- Assuming a filed return cannot be revised through later permitted mechanisms.
- Ignoring annual-return implications of monthly differences.
Questions professionals actually ask
- Is section 42 still operative under the CGST Act?
- No for current-period application. Section 42 is shown as omitted in the current consolidated Act, but it may remain relevant to a historical period when it was in force.
- Can section 42 still matter for an old GST period?
- Apply section 42 to the exact facts and period, then verify the linked delegated law and official implementation material before concluding.
- Which historical Rules and returns should be checked with section 42?
- Use the Section–Rule–Form–Notification bridge on this page, then verify the current official Rule/instrument before applying it.
- Can today’s GST portal process be applied to the old matching regime?
- No. A current portal workflow cannot by itself reconstruct a superseded statutory mechanism. Use the law, Rules, forms and system evidence applicable to the historical period.
Related law and practical resources
Implementation checklist
- Fix the transaction, taxable period and jurisdiction.
- Read every subsection, proviso, explanation and omission marker.
- Open the mapped Rule, form, notification and circular.
- Test State/UT variation and portal version.
- Preserve evidence, approvals, working papers and acknowledgements.
- Record the conclusion, assumptions, source date and reviewer.
Evidence and retention checklist
- Contract, purchase order, invoice or underlying transaction document.
- Registration, return, ledger, challan and portal acknowledgement.
- Official Act/Rule/notification version used and effective date.
- Internal tax position paper, computation and management approval.
- Correspondence, notices, replies, orders and appeal papers where applicable.
Practical Q&A
- What does section 42 regulate?
- It regulates matching, reversal and reclaim of input tax credit. Read the exact text, conditions, exceptions and transaction date together.
- Which subordinate law should be checked?
- No direct CGST Rule has been listed in this repository. Notifications, circulars, forms and the corresponding SGST/UTGST layer may also apply.
- What evidence should be retained?
- Preserve the contract or transaction record, invoice or form, portal acknowledgement, payment/ledger evidence, correspondence, legal working and the official source version used.
- Can portal behaviour override the statute?
- No. Portal functionality is operational evidence; legal entitlement and liability remain controlled by the Act, Rules, notifications and binding decisions.