What does section 17 regulate?

It regulates apportionment of credit and blocked credits. Read the exact text, conditions, exceptions and transaction date together.

Which subordinate law should be checked?

Rule 37, Rule 37A. 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.

Can I claim GST ITC if the invoice is in GSTR-2B but another condition fails?

Test statutory eligibility and restrictions first. Portal visibility or accounting booking alone is not a complete ITC entitlement test.

Which expenses are blocked for GST ITC?

Test statutory eligibility and restrictions first. Portal visibility or accounting booking alone is not a complete ITC entitlement test.

When must ITC be reversed and when can it be re-availed?

Test statutory eligibility and restrictions first. Portal visibility or accounting booking alone is not a complete ITC entitlement test.

Should common input services be handled through ISD?

Apply section 17 to the exact facts and period, then verify the linked delegated law and official implementation material before concluding.

Section 17 - Apportionment of credit and blocked credits

Reviewed by CA Nikhil Gupta and Kajri Singh · Last reviewed 30 August 2026

Chapter V - Input Tax Credit

ACTIVE

Official source: The controlling wording and amendment notes are maintained by India Code and CBIC. Open consolidated Act PDF.

Finin2min Summary - Section in 2 Minutes

Restricts ITC for non-business/exempt use and lists blocked-credit categories. Apportion business vs non-business and taxable/zero-rated vs exempt use. Banks/NBFCs may choose the 50% monthly option. Motor vehicle/vessel/aircraft restrictions depend on capacity and use. Employee-related inward supplies have same-category/composite-supply and legal-obligation exceptions. Construction clauses use “plant and machinery”; Finance Act 2025 inserted retrospective clarification for clause (d). CSR-related inward supplies are blocked. Loss, theft, write-off, gifts and free samples are blocked.

Provision position

Present in current consolidated Act

CGST chapter

Chapter V — Input Tax Credit

Legal source control

India Code + CBIC official repositories

Law checked

27 July 2026

How to use this page: Application remains transaction-date sensitive: check commencement, amendment history, Rules, notifications and State/UT overlay before reliance. The official consolidated Act controls the statutory wording; the Finin2min layers explain how to apply and evidence it.

Why Section 17 matters

Section 17 (Apportionment of credit and blocked credits) is the section-level control point within Chapter V — Input Tax Credit. This chapter determines whether purchase-side GST becomes usable input tax credit, must be apportioned, blocked, reversed, re-availed or distributed.

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.

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

Section–Rule–Form–Notification–Circular bridge

Rule 37 Rule 37A

The mapping is a legal concordance, not a round-robin related-link list. It is limited to instruments listed in this repository.

Practical example

Office renovation is capitalised to an immovable property. ITC is blocked unless the facts fit the plant-and-machinery exclusion or further works- contract exception. PROFESSIONAL ALERT “Used in business” does not override section 17(5).

Professional alert

Confirm the transaction-date amendment and commencement position before reliance.

Finin2min decision path

Identify the inward supply and intended business use.
Test documentary and statutory eligibility conditions.
Check blocked-credit and apportionment rules.
Reconcile invoice/credit data with the applicable return/portal trail.
Apply reversal, re-availment, job-work or ISD rules where triggered.
Preserve vendor, receipt, payment and tax-position evidence.

Practical case studies

Case 1 — Section-specific application — A taxpayer encounters an issue involving apportionment of credit and blocked credits. The working paper should identify the exact subsection/proviso, linked Rule/Form/instrument, tax period and evidence before recording the conclusion.

Case 2 — An invoice appears in recipient data but the underlying statutory condition is not met. Portal visibility alone does not complete the ITC test.

Case 3 — A cost has mixed taxable/exempt or business/non-business use. The credit decision requires apportionment rather than an all-or-nothing assumption.

Accounting, ERP & portal touchpoints

Purchase ledgers should carry ITC eligibility, blocked-credit, reversal reason, re-availment and registration-allocation fields, with reconciliation to GSTR-2B/IMS data.

Control: keep the legal conclusion separate from system configuration; document every tax-code/master change and its effective date.

Notice, litigation & evidence risk

ITC is a high-audit area. Evidence should show invoice/document, receipt, business use, statutory eligibility, supplier-data reconciliation and reversal/re-availment logic.

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

Treating GSTR-2B visibility as conclusive eligibility.
Ignoring section 17 blocked credits.
Failing to track reversals and later re-availment.
Allocating common input services without the correct legal mechanism.

Questions professionals actually ask

Can I claim GST ITC if the invoice is in GSTR-2B but another condition fails?: Test statutory eligibility and restrictions first. Portal visibility or accounting booking alone is not a complete ITC entitlement test.
Which expenses are blocked for GST ITC?: Test statutory eligibility and restrictions first. Portal visibility or accounting booking alone is not a complete ITC entitlement test.
When must ITC be reversed and when can it be re-availed?: Test statutory eligibility and restrictions first. Portal visibility or accounting booking alone is not a complete ITC entitlement test.
Should common input services be handled through ISD?: Apply section 17 to the exact facts and period, then verify the linked delegated law and official implementation material before concluding.

Related law and practical resources

Chapter V guide Practical GST pathways CGST Rules GST Forms Notifications Circulars Provision citator Case law GST Portal controls State/UT overlays

Finin2min takeaway: Section 17 should never be applied alone. Read the exact provision, the connected Rules/forms/instruments, the transaction date, the State/UT overlay and the binding judicial position together.

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 17 regulate?: It regulates apportionment of credit and blocked credits. Read the exact text, conditions, exceptions and transaction date together.
Which subordinate law should be checked?: Rule 37, Rule 37A. 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.

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