How to Claim Input Tax Credit —
Section 16, Step by Step
The four Section 16 conditions, GSTR-2B matching, the September time limit, the 180-day payment rule and the blocked credits under Section 17(5) — everything you need to claim ITC correctly and avoid reversals.
To claim Input Tax Credit under GST you must satisfy all four conditions of Section 16: (1) hold a valid tax invoice, (2) have actually received the goods or services, (3) the tax must appear in your auto-drafted GSTR-2B (supplier filed GSTR-1 and paid), and (4) you claim it in your GSTR-3B. The credit must be claimed by the earlier of 30 November of the next financial year or the GSTR-9 filing date. Credits blocked by Section 17(5) can never be claimed.
Section 16 — The 4 Conditions for ITC
Every rupee of ITC has to clear these four tests. Miss any one and the credit is not available yet — or not at all.
| # | Condition | What it means | Section |
|---|---|---|---|
| 1 | Valid tax invoice | Hold a proper GST invoice / debit note / Bill of Entry with GSTIN, HSN/SAC, taxable value and tax split. Proforma, quotes and composition-dealer bills do not qualify. | 16(2)(a) |
| 2 | Goods / services received | Credit only after actual receipt. For lots in instalments, only on the last instalment; no ITC on a mere advance. | 16(2)(b) |
| 3 | Tax paid & in GSTR-2B | Supplier filed GSTR-1 and paid the tax — reflected in your GSTR-2B. Rule 36(4) blocks ITC not in GSTR-2B. | 16(2)(aa)/(c) |
| 4 | Return filed | Claimed in your GSTR-3B and returns are up to date. | 16(2)(d) |
A 5th test applies to purchases on credit: pay the supplier within 180 days or reverse the ITC (2nd proviso to Sec 16(2)).
Since 1 January 2022, Rule 36(4) allows no provisional ITC — you can claim only credit auto-populated in GSTR-2B. Claiming unsupported ITC invites demand notices, 18% interest under Section 50 and penalties. Reconcile GSTR-2B against your purchase register every month before filing.
The ITC Claim Process
GSTR-2B is generated on the 14th of every month for the previous period. Your monthly ITC workflow runs from invoice capture to the GSTR-3B claim.
- Maintain a live purchase register
- Download GSTR-2B after the 14th
- Reconcile GSTR-2B with books
- Chase suppliers for missing invoices
- Identify & exclude Section 17(5) blocked ITC
- Claim eligible ITC in Table 4 of GSTR-3B
- Track the 180-day supplier-payment clock
- Reverse & re-claim ITC where required
- Do an annual books-vs-2B-vs-3B check for GSTR-9
Want your GSTR-2B reconciled and monthly returns filed accurately?
Get ITC Filing Help →Blocked ITC — What You Can Never Claim
Some credits are barred outright, even if all four Section 16 conditions are met. See our full blocked-credit guide for exceptions.
| Category | ITC? | Key exception |
|---|---|---|
| Motor vehicles (≤13 seats, personal transport) | Blocked | Goods transport, cab operators, dealers, driving schools |
| Food, beverages, outdoor catering | Blocked | If you make the same outward supply |
| Health services, beauty, cosmetic & plastic surgery | Blocked | If obligatory under law, or same outward supply |
| Health & life insurance, club / gym membership | Blocked | Insurance allowed if mandatory under law |
| Works contract for immovable property | Blocked | Plant & machinery only |
| Goods / services for personal consumption | Blocked | None |
| Goods lost, stolen, destroyed or given as free samples | Blocked | None |
Full list: Section 17(5)(a)–(i), CGST Act 2017.
The costliest ITC errors are not missed credits — they are wrongly claimed blocked credits. A GST officer can disallow Section 17(5) ITC years later with 18% interest and penalty, so screen every purchase before you file, not at audit.
The 180-Day Payment Rule & RCM ITC
If you do not pay a supplier (value + tax) within 180 days of the invoice date, the ITC already taken must be reversed with interest. Once you pay, you can re-claim it — with no time bar on the re-claim.
- RCM tax must be paid in cash in GSTR-3B — you cannot use ITC balance to discharge RCM liability.
- After paying RCM tax, ITC on it can be claimed in the same or a later GSTR-3B (subject to Sec 16 & 17(5)).
- Raise a self-invoice when receiving RCM supplies from an unregistered supplier.
- Rule 37A: if the supplier does not pay the tax by 30 September of the next FY, reverse the ITC by 30 November; re-claim once they pay.
ITC Time Limit — Section 16(4)
ITC for a financial year must be claimed by the earlier of: the GSTR-3B for the period up to 30 November of the next FY, or the date of filing the annual return GSTR-9. After that the credit lapses permanently.
Invoice dated in FY 2024-25
Invoice dated in FY 2025-26
No. The GST 2.0 rate rationalisation effective 22 September 2025 restructured rates into a 5% / 18% two-slab system (plus a 40% demerit rate) but left the ITC framework — Section 16 conditions, GSTR-2B matching, Section 17(5) and the Section 16(4) time limit — unchanged.
Behind on GSTR-2B reconciliation before the November cut-off?
Talk to a GST Expert →Frequently Asked Questions
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