Input Tax Credit for Pvt Ltd: the s.16 conditions, the blocked credits list (s.17(5)), and the GSTR-2B reconciliation

ITC on a ₹15 lakh office car is fully blocked under s.17(5)(a) CGST Act 2017, but the ₹80,000 laptop your employee uses for work is credit-eligible — the difference decides whether your company sits on a recoverable asset or a demand. Four conditions under s.16(2) must all be met before any credit is claimable, and a fifth, s.16(2)(aa), ties every rupee to your supplier's GSTR-1. The GSTR-2B statement is the machine-check against both.

What the law actually requires

The four s.16(2) conditions. Credit on an inward supply is available only where all four exist:

Clause (d) is reinforced by s.16(2)(aa), inserted by the Finance Act 2021 with retrospective effect from 1 January 2022: credit is available only if the supplier's invoice details are furnished in its outward-supply statement and communicated to you — i.e., the invoice appears in your GSTR-2B. An invoice sitting in your purchase register that never reaches GSTR-2B is not provisional credit; it is no credit, subject only to the 5% margin in Rule 36(4).

Two further clock constraints. s.16(4) requires the credit to be claimed in a return filed by 30 November of the following financial year (extended from September by the CGST (Amendment) Act 2022). And the second proviso to s.16(2) requires reversal of credit where the supplier is not paid within 180 days of the invoice date — that credit revives on payment, unlike blocked credit which never revives.

The blocked list: s.17(5)

Section 17(5) blocks credit on specified goods and services even where all s.16 conditions are met. The phrase "notwithstanding" in the section matters: business purpose is no defence. The categories a Pvt Ltd most often trips on:

Note clause (d)'s detail: the Explanation to s.17 includes renovation, alteration and repair "to the extent of capitalisation" within "construction", so an office fit-out capitalised to leasehold improvements is blocked — while the same work charged to repairs is credit-eligible. The Finance Act 2025 substituted "plant and machinery" for "plant or machinery" with retrospective effect from 1 July 2017, narrowing the exception to the statutory definition of plant and machinery under the Act.

What changed FY 2025-26

• GSTR-2B is now the sole reconciliation document. The provisional cap in Rule 36(4) — unmatched invoices capped at 5% of eligible matched credit — is fully operative for FY 2025-26. A company claiming 12% unmatched credit is claiming 7% it is not entitled to.
• The s.16(4) deadline moved to 30 November 2026 for FY 2025-26 credit. This interacts badly with suppliers who file late: their invoices land in GSTR-2B in, say, October 2026, leaving your team weeks, not months, to claim.
• The Finance Act 2025 "plant and machinery" amendment applies retrospectively, so construction-related ITC positions taken in earlier years under the wider wording now need re-assessment.

Worked example: BlueSky Pvt Ltd

BlueSky Pvt Ltd is a mid-sized manufacturer. In FY 2025-26 it makes four purchases:

The car alone costs BlueSky ₹2,70,000 of permanent credit. If the accounts team had claimed it and the department finds it on a s.65(1) audit, the demand is ₹2,70,000 plus interest at 18% under s.50(3) on the utilised portion, plus penalty under s.73 or s.74A.

The 5% provisional margin in practice: BlueSky's GSTR-2B for a month shows eligible credit of ₹20,00,000. Its purchase register has ₹21,00,000 of GST-bearing invoices. Claimable credit = ₹20,00,000 + 5% = ₹21,00,000 — exactly the register total, so no excess. If the register were ₹22,00,000, the claimable ceiling is ₹21,00,000 and the ₹1,00,000 gap must wait until the invoices appear in GSTR-2B.

Step-by-step: reconcile ITC each month

• Pull GSTR-2B for the month and export eligible credit by supplier.
• Match against the purchase register line by line (invoice number, date, supplier GSTIN, value).
• Investigate gaps in three buckets: supplier never filed GSTR-1 (s.16(2)(aa) fails); supplier filed but invoice mis-typed (ask for a GSTR-1 correction in a later period); document genuinely missing.
• Cap the provisional claim in GSTR-3B Table 4(A) at eligible GSTR-2B credit plus 5% under Rule 36(4).
• Flag s.17(5) lines — vehicles, food, club, works contract, personal consumption — at voucher entry so they never enter the claim.
• Reconcile quarterly, not yearly. The s.16(4) deadline is 30 November 2026; leaving it to November is a guarantee of missed invoices.

FAQ

We bought an electric car for the CEO. Is ITC blocked?
Yes. s.17(5)(a) blocks credit on motor vehicles up to 13 seats regardless of fuel type or business use; electric vehicles are not separately exempted. The exceptions are resale, passenger transport and driving instruction only.

Can we claim ITC on a hotel bill for a client meeting?
Accommodation is not on the blocked list, so GST on hotel stays is creditable where the stay is for business. The trap is the food component — s.17(5)(b)(i) blocks outdoor catering and food and beverages, so the breakfast included in the tariff is not separately creditable.

What happens to ITC if we have not paid the supplier within 180 days?
Under the second proviso to s.16(2), the credit must be reversed (added to output tax) in the month the 180 days lapse. It revives in full when the supplier is paid, unlike s.17(5) blocked credit, which is a permanent bar.

Our GSTR-2B shows less credit than our register because suppliers file late. What can we claim?
Eligible credit in GSTR-2B plus 5% of it under Rule 36(4). Beyond that is excess credit with 18% interest under s.50(3). The fix is supplier discipline — a vendor master that scores vendors on GSTR-1 timeliness.

For an ITC position review before you file your annual return, visit pvtltd.co.

Sources

• s.16(1), s.16(2)(a)–(d), s.16(2)(aa), s.16(4), s.16(5) CGST Act 2017
• s.17(5)(a)–(i) and Explanation to s.17 CGST Act 2017
• CGST Rule 36(4) (5% provisional ITC cap)
• Finance Act 2021 (s.16(2)(aa)); CGST (Amendment) Act 2022 (s.16(4)); Finance Act 2025 (s.17(5)(d) plant and machinery)
• s.50(3), s.73, s.74A CGST Act 2017 (interest and penalties)

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