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business taxes

GST Input Tax Credit Rules in India: Eligibility, Blocked Credits and Reversals

A practical guide to India’s GST input tax credit rules: eligibility conditions, blocked credits and exceptions, GSTR-2B limits, common-use reversals and claim deadlines.

By TheFinanceBase Team 7 min read
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In India, a GST-registered person can generally claim input tax credit (ITC) on goods or services used for business, but only if the statutory conditions are met and no restriction or reversal rule applies. Check the invoice and receipt of the supply, business use, the type of output supply, section 17(5) blocked-credit rules, the claim deadline and any later event that requires an adjustment. A GSTR-2B entry helps with review; it does not by itself make a credit eligible.

Who can claim input tax credit under GST?

Section 16(1) of India’s Central Goods and Services Tax Act, 2017 (CGST Act) gives a registered person a general entitlement to credit input tax charged on goods or services used, or intended to be used, in the course or furtherance of business. That entitlement is subject to the Act’s conditions, restrictions and prescribed procedures. The CBIC’s CGST Act text is the starting point for checking the statutory rule.

Business use alone is not enough. A purchase may be wholly or partly ineligible because a required condition is unmet, it relates to non-business or exempt use, a specific blocked-credit provision applies, or a later event triggers reversal. SGST and UTGST counterparts and state-level administration may also matter when applying the rules.

What are the conditions for claiming ITC?

Section 16(2) sets out core conditions, including holding a prescribed tax document, receiving the goods or services, tax payment to the government subject to section 41, and furnishing the return under section 39. For goods received in lots or instalments, the Act has a special receipt rule. There is also a restriction where a taxpayer claims income-tax depreciation on the tax component of capital-goods cost: section 16(3) disallows ITC on that same tax component.

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Use this sequence to review a purchase before claiming credit. It is a practical check, not a substitute for the prescribed return process or a transaction-specific tax analysis.

  1. Confirm the claimant and document. Check that the claimant is a registered person and holds an invoice, debit note or other document prescribed for the transaction.
  2. Confirm receipt. Establish that the goods or services were received, applying the special rule for goods delivered in lots or instalments where relevant.
  3. Identify the use. Determine whether the purchase is for business, non-business use, or both, and whether it relates to taxable, zero-rated or exempt supplies.
  4. Check restrictions. Test the facts against section 17(5), which blocks specified credits subject to statutory exceptions, and against the rules for apportioning common credit.
  5. Check the claim period and later events. Confirm that the claim is within the applicable time limit and consider whether non-payment, a change in use or another event will require an adjustment.

Which expenses are blocked under GST?

Section 17(5) lists specified credits that are blocked, subject to exceptions and qualifications in the provision. Broad categories include certain motor vehicles and conveyances; specified food, beverages, outdoor catering, beauty, health and cosmetic services; club or fitness-centre membership; rent-a-cab and insurance in covered cases; employee travel benefits for vacation; certain works-contract services and goods or services used to construct immovable property; composition-scheme supplies; certain supplies to non-resident taxable persons; personal consumption; lost, stolen, destroyed or written-off goods, gifts and free samples; and tax paid in specified demand or enforcement circumstances.

These are not blanket rules for every purchase that sounds similar. The relevant subclause, use and any exception must be checked. For example, the Act provides permitted business categories for some vehicle credits and exceptions for certain food, insurance or employee-related costs tied to making a same-category taxable supply or meeting a legal obligation. The construction provisions also distinguish the nature and use of property and address plant and machinery. Consult the exact wording in section 17(5) of the CGST Act before treating a category as blocked or eligible.

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A section 17(5) block is different from an apportionment: a blocked credit is unavailable under the specified provision unless an applicable exception fits, while common-use credit may be restricted by a prescribed calculation.

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How do business use and exempt supplies affect common credit?

Sections 17(1) and 17(2) restrict ITC attributable to non-business use and exempt supplies, respectively. Credit relating to taxable supplies, including zero-rated supplies, is treated differently from credit attributable to exempt supplies. Where an input or service is used for more than one purpose, the prescribed rules provide for attribution rather than allowing the full amount by default.

Purchase use General treatment
Exclusively for business and taxable or zero-rated supplies May qualify, subject to section 16 conditions and any applicable blocked-credit provision.
Exclusively for non-business use or exempt supplies The attributable credit is not available.
Common input or input service used across eligible and restricted activities Apportion under rule 42 of the CGST Rules.
Capital goods used across eligible and restricted activities Apply the separate calculation under rule 43 of the CGST Rules.

The calculation depends on the taxpayer’s actual use and the applicable rule requirements; it should not be replaced with a guessed or universal percentage. The CBIC Input Tax Credit Rules set out the prescribed treatment for common inputs, input services and capital goods.

Does a GSTR-2B entry mean the credit is claimable?

No. GSTR-2B is a system-generated statement that assists with reviewing available ITC, but an entry does not remove the recipient’s duty to assess eligibility. The GST portal’s GSTR-2B FAQ says: “Taxpayers would be eligible to avail input tax credit based on the ITC indicated in Form GSTR-2B, as per availability/ eligibility of ITC.” The portal also cautions that the system may not generate every circumstance that makes credit unavailable, so taxpayers should self-assess and claim or reverse as appropriate in GSTR-3B.

CBIC Circular 170/02/2022-GST, dated 6 July 2022, clarified reporting for ineligible and blocked ITC, reversals and inter-State supplies in the then-applicable GSTR-3B and GSTR-1 table framework. It addressed, among other cases, rule 42/43 reversals, section 17(5) ineligibility, credit where a supply was not received, and rule 37 payment reversals. Its treatment of section 17(5) in the described framework was to show the amount as a reversal rather than duplicate it as a separate “ineligible ITC” item. Because return tables and instructions can change, check current portal guidance before relying on the circular for filing mechanics. Read Circular 170/02/2022-GST.

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When must ITC be reversed?

Some credits that were initially claimed require a later adjustment. The reason matters: a payment-timing reversal is not the same as a credit permanently blocked under section 17(5), and a restriction for mixed use is calculated under a separate rule.

Supplier not paid within 180 days

Under the proviso to section 16(2), if a recipient claims ITC but does not pay the supplier the value of the supply plus tax within 180 days from the invoice date, the credit must be added to output tax liability with interest in the prescribed manner. Rule 37 addresses the reversal reporting and interest period. Once the recipient pays the supplier the value and tax, the Act allows the credit to be taken again. This 180-day payment condition does not apply to supplies on which tax is payable under reverse charge (RCM). See the CGST Act and CGST Rules for the statutory and prescribed details.

Common use or a change in use

Where a purchase serves both eligible and restricted purposes, the applicable rule calculation limits the credit to the eligible portion. A change in use or supply mix can affect the treatment, including for capital goods; apply the relevant attribution and reversal provisions rather than assuming the original claim remains unchanged. Rules 42 and 43 set out the calculations for common inputs or input services and capital goods.

Other ineligibility discovered after claiming

If review shows that a claimed amount related to an unreceived supply or falls within a blocked-credit provision, it cannot be retained merely because it appeared in a portal statement or was included in a return. Identify the specific ground and make the adjustment in accordance with the current return instructions.

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What is the time limit to claim ITC?

The general rule in section 16(4), as described in CBIC Circular 237/31/2024-GST, bars a claim after 30 November following the end of the financial year to which the invoice or debit note pertains, or the date the relevant annual return is furnished, whichever is earlier. The date limit is not the only test: a timely claim must still meet the other eligibility requirements.

The Finance (No. 2) Act, 2024 inserted sections 16(5) and 16(6) retrospectively from 1 July 2017 to provide time-limit relief in specified cases. The CBIC circular, dated 15 October 2024, explains that this relief is limited to cases where denial is solely for contravention of section 16(4); it does not cure an independent reason the credit is unavailable. For a real claim, check the relevant financial year, return history, applicable amendments and notifications against Circular 237/31/2024-GST and the current statute.

How does ITC work for zero-rated supplies?

Under section 16 of the IGST Act, exports and supplies to an SEZ developer or SEZ unit are zero-rated supplies. The Act permits credit for zero-rated supplies notwithstanding their exempt treatment, while retaining the CGST Act’s section 17(5) blocks. It also provides refund routes, including supply under bond or Letter of Undertaking without payment of IGST with a refund of unutilized credit, subject to applicable conditions. See the CBIC IGST Act text, section 16.

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