Last reviewed: 10 August 2026. From the July 2026 tax period, GSTR-3B auto-locks your input tax credit to GSTR-2B — but the portal only locks the amount. Whether a credit is eligible is still entirely your judgment, and Section 17(5) of the CGST Act is where most of that judgment lives. A credit can sit in GSTR-2B, flow into your locked GSTR-3B and still be a blocked credit — with 18% interest and penalty waiting if it is claimed. This guide gives the full Section 17(5) list, the exceptions that matter to MSMEs, the 2025 retrospective amendment on construction ITC, and the clean way to fix a past wrong claim.
Eligibility vs availability — why 17(5) still matters after hard-locking
Section 16 gives the right to ITC; Section 17(5) takes it away for specific categories, overriding everything else. The distinction has become sharper since GSTN began locking Table 4A of GSTR-3B to GSTR-2B (see our guide to IMS and GSTR-3B ITC hard-locking from July 2026). The system now stops you claiming more than 2B — it does nothing to stop you claiming a 17(5) blocked credit that is sitting inside 2B. Your supplier correctly charges GST on the director's sedan, its invoice lands in 2B, and the portal will happily let it flow to 3B. Catching it is a books-level control, which is why blocked-credit review belongs in your monthly ITC reconciliation checks rather than at year-end.
Section 17(5) — the full list with exceptions
| Clause | ITC blocked on | Key exceptions — ITC available when |
|---|---|---|
| (a) | Motor vehicles for transport of persons, approved seating ≤ 13 (including driver) | Used for further supply of such vehicles; transport of passengers; driving training. Goods-transport vehicles are outside the block altogether. |
| (aa) | Vessels and aircraft | Further supply; passenger transport; training on navigating or flying; transportation of goods. |
| (ab) | General insurance, servicing, repair and maintenance of the vehicles, vessels and aircraft above | Where the vehicle itself qualifies for an exception; received by manufacturers of such vehicles; received by insurers for vehicles they insure. |
| (b) | Food and beverages, outdoor catering, beauty treatment, health services, cosmetic and plastic surgery; leasing, renting or hiring of the restricted vehicles, vessels or aircraft; life and health insurance; club and fitness membership; travel benefits to employees on vacation (LTC or home travel) | Same-category outward supply or part of a taxable composite or mixed supply; or where providing it is obligatory under any law — a proviso that Circular 172/04/2022-GST confirms applies to the whole of clause (b). |
| (c) | Works contract services for construction of immovable property (other than plant and machinery) | Where it is an input service for a further supply of works contract; or relates to plant and machinery. |
| (d) | Goods or services used for construction of immovable property on own account (other than plant and machinery), even for business use | Construction of plant and machinery; cost not capitalised (revenue repairs). |
| (e) | Tax paid under the composition scheme (Section 10) | — |
| (f) | Goods or services received by a non-resident taxable person | Goods imported by the non-resident. |
| (fa) | Goods or services used for CSR obligations under Section 135 of the Companies Act, 2013 (with effect from 1 October 2023) | — |
| (g) | Goods or services used for personal consumption | Business-use portion, supported by working. |
| (h) | Goods lost, stolen, destroyed, written off, or disposed of as gifts or free samples | — (an insurance payout does not restore the credit) |
| (i) | Tax paid in fraud, suppression or wilful-misstatement demands under Section 74 (periods up to FY 2023-24; references to Sections 129 and 130 stand removed from 1 November 2024) | — |
Motor vehicles — apply the seat test, not the use test
The commonest error in MSME books is claiming ITC on a car because it is "used for business". The law does not ask how the vehicle is used in your office; it asks what the vehicle is. A sedan or SUV seating up to 13 is blocked for everyone except dealers, passenger transporters and driving schools — a director's car, however business-critical, stays blocked, and so do its insurance, repairs and maintenance under clause (ab). By contrast, a delivery van, truck or tempo is a goods-transport vehicle and never enters the block: its purchase, insurance and repairs all carry eligible ITC. Two-wheelers for delivery fleets follow the same logic.
Staff welfare — the "obligatory under any law" escape route
Clause (b) blocks most employee-welfare spends: canteen food, outdoor catering for the annual day, group health and life insurance, club memberships, gym fees and leave-travel benefits. The escape route is the proviso: where a law obliges the employer to provide the item, ITC is available. The standard example is a factory canteen under Section 46 of the Factories Act, 1948 (mandatory beyond 250 workers). Practical position to hold in an audit: claim ITC only on the cost the business bears — advance rulings consistently deny the portion recovered from employees — and keep the statutory trigger (worker count, licence condition, state rule) on file. Circular 172/04/2022-GST also settled two useful points: the proviso covers the entire clause (b), and perquisites given to employees under the employment contract are not a "supply" at all.
Construction ITC and the 2025 retrospective amendment
Clauses (c) and (d) block ITC on works contracts and on goods or services used to construct immovable property on your own account — offices, factories, godowns, showrooms — except plant and machinery. "Construction" includes reconstruction, renovation, additions, alterations and repairs to the extent capitalised; the same repair billed to the profit and loss account is outside the block. "Plant and machinery" means apparatus, equipment and machinery fixed to earth by foundation or structural support (the foundation itself included), but excludes land and buildings, telecommunication towers and pipelines laid outside the factory.
One live controversy closed recently. In Safari Retreats (October 2024), the Supreme Court read the words "plant or machinery" in clause (d) as wider than the defined "plant and machinery" and allowed a functionality test under which a building built to let could itself be "plant". The Finance Act, 2025 substituted "plant and machinery" in clause (d) retrospectively from 1 July 2017, overriding any contrary judgment. The practical position today: do not build ITC positions on the functionality test; credits for malls, warehouses or leased commercial buildings constructed on own account stand blocked, while machinery foundations and structural supports remain eligible.
Worked example 1 — renovation vs machinery foundation
| Spend in FY 2026-27 | GST @ 18% | Treatment in books | ITC position |
|---|---|---|---|
| Office interior renovation ₹20,00,000 | ₹3,60,000 | Capitalised to building | Blocked — Section 17(5)(d) |
| Repainting and waterproofing ₹4,00,000 | ₹72,000 | Charged to repairs (P&L) | Eligible — block applies only to the extent capitalised |
| RCC foundation for new CNC machine ₹6,00,000 | ₹1,08,000 | Capitalised to plant | Eligible — foundation and structural support are part of plant and machinery |
Same contractor, same month, three different answers — which is why the fixed-asset register and the ITC working must talk to each other every month.
What a wrong claim actually costs
Worked example 2: an MSME claimed ₹1,50,000 ITC on the insurance and repairs of a director's car in the January 2026 GSTR-3B. The credit ledger dipped below ₹1,50,000 on 20 February 2026 (so the credit stands utilised under Rule 88B). The error is found in an internal review and reversed through Form DRC-03 on 10 August 2026.
- Reversal: ₹1,50,000.
- Interest under Section 50(3): 18% p.a. from utilisation to reversal — ₹1,50,000 × 18% × 171/365 = ₹12,649. Had the ledger never dipped below ₹1,50,000, interest would be nil — Rule 88B tests utilisation, not availment.
- Penalty: voluntary reversal before any notice normally closes the matter without penalty. If the department finds it first, a normal-case demand carries penalty of 10% of tax or ₹10,000, whichever is higher (₹36,000 exposure on a ₹3,60,000 claim, for instance) — and 100% in fraud cases.
For FY 2024-25 onwards, demands travel under the unified Section 74A: notice within 42 months of the annual-return due date, order within 12 months (extendable by 6). Pay a normal-case demand with interest within 60 days of the notice and the penalty drops to nil. Mismatch intimations also arrive faster than officers do — excess-claim gaps for pre-locking periods still surface through DRC-01C, and ASMT-10 scrutiny notices routinely open with blocked-credit lines pulled from your own GSTR-9 Table 7.
Common mistakes we see in MSME and startup books
- Diwali gifts and hampers for clients and staff — blocked under clause (h) as goods disposed of by way of gift, whatever the marketing intent.
- Free samples to dealers or doctors — blocked under clause (h); budget the GST cost into the scheme.
- Goods destroyed or written off — fire, flood, expiry, obsolescence: ITC must be reversed even when insurance pays out.
- Group medi-claim taken voluntarily — blocked now that no law mandates it; it was claimable only while government orders made it obligatory.
- Over-reversing on equipment hire — the leasing block covers only motor vehicles, vessels and aircraft. ITC on hiring cranes, generators, earth-movers or servers is fine; do not reverse it by habit.
- Hotel stays on business travel — accommodation is not in Section 17(5) at all; what is blocked is food and beverages, so split composite travel bills line-wise.
- CSR spend claimed after 1 October 2023 — squarely blocked under clause (fa) for companies.
- Treating GSTR-2B as clearance — 2B is availability. Eligibility under 17(5), Rules 42/43 apportionment and RCM discipline stay manual, which the GSTR-9/9C annual return will eventually expose if the monthly process does not.
Fixing a past wrong claim — the defensible sequence
- Quantify clause-wise. Trawl expense heads (vehicles, staff welfare, repairs capitalised, gifts, write-offs) and map each wrong claim to its 17(5) clause, period-wise.
- Test utilisation under Rule 88B. Pull the electronic credit ledger; interest applies only from the date the balance fell below the wrongly availed amount, taking IGST, CGST and SGST balances together.
- Reverse with interest. Current-year errors: reverse in GSTR-3B Table 4(B). Earlier periods, or anything after the annual return: pay through Form DRC-03 citing Section 73(5)/74A voluntary payment.
- Document. A one-page working per reversal — invoice, clause, utilisation test, interest computation — is what turns a scrutiny letter into a one-reply closure.
- Disclose consistently. Report the reversal in GSTR-9 correctly so Tables 6, 7 and 8 reconcile; a mismatch there is the fastest route to a notice.
Frequently asked questions
Can I claim ITC on a car bought for business use?
Generally no. Section 17(5)(a) blocks ITC on motor vehicles for transport of persons with approved seating up to 13 (including driver), even if used purely for business. ITC is available only if you deal in such vehicles, transport passengers or run driving training. Goods-transport vehicles such as delivery vans and trucks are outside the block, so their ITC is claimable.
Is ITC available on our factory canteen expenses?
Yes, where running the canteen is obligatory under law — for example Section 46 of the Factories Act, 1948 for factories with more than 250 workers. Circular 172/04/2022-GST confirms the "obligatory under any law" proviso applies to the whole of clause (b). Advance rulings generally restrict the credit to the cost borne by the employer, not the portion recovered from employees.
Can I claim ITC on office renovation or repairs?
It depends on accounting treatment. If renovation, addition or repair cost on immovable property is capitalised, ITC is blocked under Section 17(5)(c)/(d). If it is charged to the profit and loss account as revenue repairs, the block does not apply and ITC can be claimed subject to the usual Section 16 conditions.
What interest applies if I reverse wrongly claimed ITC?
Under Section 50(3) read with Rule 88B, interest at 18% per annum applies only where the wrongly availed ITC was also utilised — that is, your electronic credit ledger balance fell below the wrongly availed amount. Interest runs from the date of utilisation to the date of reversal or payment. If the credit was never utilised, reversal attracts no interest.
If an invoice appears in GSTR-2B, is the ITC automatically eligible?
No. GSTR-2B shows availability, not eligibility. Even after GSTR-3B started auto-locking ITC to GSTR-2B from the July 2026 tax period, Section 17(5) blocked credits, Rules 42/43 apportionment and other reversals remain your responsibility — the portal does not test eligibility for you.
Is ITC on hiring plant, machinery or equipment blocked?
No. The leasing, renting or hiring block in Section 17(5)(b)(i) covers only motor vehicles, vessels and aircraft of the restricted kind. Hiring cranes, earth-movers, generators, servers or other equipment for business is not a blocked credit, subject to normal Section 16 conditions.
Somesh Chandak & Associates, Thane, conducts clause-wise blocked-credit reviews, quantifies interest under Rule 88B, files DRC-03 reversals and replies to ITC notices for MSMEs, startups and exporters across Maharashtra.
GST Compliance & Returns GST Notices & Litigation Book a consultationThis article is for general information and education only and is not professional advice. Positions stated are as of 10 August 2026 and reflect the CGST Act, 2017 as amended (including the Finance Act, 2025 retrospective amendment to Section 17(5)(d)), Rule 88B of the CGST Rules and Circular 172/04/2022-GST. Facts of each case differ — please take specific advice before acting.