Input tax credit under GST is not available merely because a business has a tax invoice and the expense is connected with business. Section 17(5) of the CGST Act blocks credit for specified goods and services, subject to stated exceptions. A reliable GST review therefore needs two separate questions: does the purchase satisfy the general ITC conditions, and is it nevertheless blocked by section 17(5)? The current CBIC Tax Information Portal text of section 17 is the primary reference for this test.
What is blocked ITC?
Blocked ITC is input tax that cannot be availed because the law specifically excludes the relevant inward supply from credit, even where it may have a business connection. This is different from proportionate reversal for non-business or exempt use under section 17(1) and 17(2). Section 17(5) is a specific restriction and must be tested category by category.
Motor vehicles: credit is not always blocked
Section 17(5) restricts ITC on specified motor vehicles for transportation of persons, but contains important exceptions. Credit can be available where the vehicle is used for further supply of such motor vehicles, transportation of passengers, or imparting training on driving such motor vehicles. Separate provisions deal with vessels and aircraft and their permitted uses.
The practical mistake is to use a blanket rule such as “GST on every car is ineligible.” CBIC's Circular 231/25/2024-GST illustrates the importance of the actual use: it discusses when a demo vehicle used by an authorised dealer can fall within the further-supply exception and contrasts that with vehicles used for staff or management transportation.
Food, catering, health and insurance expenses
Section 17(5) also covers specified supplies including food and beverages, outdoor catering, beauty treatment, health services, cosmetic and plastic surgery, certain leasing or hiring of motor vehicles, life insurance and health insurance. But the restriction has exceptions. Credit may be available where the inward supply is used for making an outward taxable supply of the same category or as an element of a taxable composite or mixed supply.
The section also provides an exception for specified employee-related supplies where an employer is legally obliged to provide them under a law in force. Therefore, an accounts team should not decide eligibility from the expense ledger name alone; it should identify the nature of supply, business model and any statutory obligation.
Club membership and employee vacation travel
Membership of a club, health and fitness centre is specifically covered by section 17(5). Travel benefits extended to employees on vacation, such as leave or home travel concession, are also within the blocked-credit framework, subject to the statutory-obligation exception stated in the provision.
Works contract and construction-related credit
Section 17(5) restricts ITC on works contract services supplied for construction of immovable property, other than plant and machinery, except where the works contract service is an input service for further supply of works contract service. It also restricts goods or services received for construction of immovable property on one's own account, subject to the statutory wording and plant-and-machinery exclusion.
This area requires careful classification. Repair or maintenance expenditure should not automatically be treated as construction merely because it relates to a building. The statutory definition and whether expenditure is capitalised can materially affect the analysis, so the invoice, scope of work and accounting treatment should be reviewed together.
Personal consumption, gifts and lost goods
Section 17(5) also blocks credit for goods or services used for personal consumption. It further covers goods lost, stolen, destroyed, written off, or disposed of by way of gift or free samples. Businesses with marketing samples, inventory write-offs or employee gifting programmes should therefore build a GST review into the accounting process instead of discovering the issue only during annual audit.
Practical example: company car versus dealer demo car
Assume a consulting company buys a passenger car primarily for directors' business travel. A business purpose by itself does not establish ITC eligibility; the vehicle must satisfy an exception in section 17(5), which ordinary management transportation generally does not. Now compare an authorised motor dealer buying a vehicle for demonstration and later sale. CBIC's Circular 231 explains circumstances in which a demo vehicle used for promoting sale of similar vehicles and ultimately supplied by the dealer can qualify under the further-supply exception. The same asset category can therefore produce different ITC outcomes because the statutory use differs.
How should blocked credit be reported in GSTR-3B?
CBIC's Circular 170/02/2022-GST clarifies the reporting approach for Table 4 of GSTR-3B. It states that ineligible ITC under section 17(5), or other provisions requiring reversal, is reported in Table 4(B), rather than Table 4(D)(1). The circular also explains the net ITC mechanism through Table 4(C). Finance teams should reconcile their blocked-credit register with GSTR-3B rather than relying only on the auto-populated credit statement.
Monthly blocked-ITC review checklist
- Start from purchase data: identify expense and capital-goods categories that commonly attract section 17(5).
- Test the exact inward supply: do not decide from the general ledger label alone.
- Check statutory exceptions: document further supply, passenger transport, training, legal obligation or other applicable exception.
- Review construction invoices separately: retain contracts, scope, capitalisation evidence and plant-and-machinery analysis.
- Capture gifts and write-offs: coordinate GST review with inventory and employee-benefit processes.
- Maintain an eligibility note: for material or recurring items, record why credit is eligible or blocked and link the supporting invoice or legal basis.
- Reconcile GSTR-3B: ensure ineligible credit and reversals are reported consistently with the blocked-credit working.
Common mistakes
- Treating every business expense as eligible merely because GST is charged.
- Blocking every motor vehicle without checking the statutory exceptions.
- Assuming every employee-related insurance or catering invoice is automatically blocked without checking legal-obligation and outward-supply exceptions.
- Confusing section 17(5) blocked credit with proportionate reversals for exempt or non-business use.
- Ignoring free samples, gifts, inventory destruction and write-offs.
- Reporting blocked credit inconsistently between the internal register and GSTR-3B.
Practical takeaway
Section 17(5) is best handled through a recurring purchase-level control. Identify high-risk expense categories, test the precise statutory restriction, check every relevant exception, retain evidence for the conclusion and reconcile the result to GSTR-3B. The safest rule is not “business expense equals ITC” or “listed expense equals blocked”; eligibility depends on the exact section 17(5) category, its exceptions and the facts of use.
