GST and input tax credit
What Is Input Tax Credit? GST Eligibility and Checks
Direct answer
Input tax credit, or ITC, is eligible GST charged on business inputs, input services or capital goods that a registered person can credit to its electronic credit ledger and use against permitted output tax. Credit depends on statutory conditions, documentation and restrictions; it can require temporary or permanent reversal and should be reconciled before GSTR-3B is filed.
Acronym: ITC. Also known as: GST input credit, input GST credit.
Key takeaways
- ITC is conditional: a booked tax amount is not automatically claimable credit.
- Section 16 sets core eligibility conditions while section 17 apportions and blocks specified credits.
- Temporary reversals and permanent ineligibility need separate ledgers and different follow-up.
- Reconcile purchase records, evidence, IMS, GSTR-2B and GSTR-3B at document level.
The section 16 eligibility framework
- Registered person and business purpose. The supply must be used or intended for use in the course or furtherance of business.
- Valid document. Hold a tax invoice, debit note or other prescribed tax-paying document with applicable particulars.
- Supplier reporting. Invoice or debit-note details must be furnished by the supplier in its outward-supply statement and communicated to the recipient.
- Receipt. Goods or services must be received, subject to statutory deemed-receipt rules and the last-lot rule.
- Tax paid to government. The charged tax must actually be paid, in cash or through admissible credit, subject to the Act.
- Return filed. The registered person must furnish the section 39 return.
- Time limit met. Section 16(4) generally bars taking an invoice or debit-note credit after 30 November following the end of its financial year or filing the relevant annual return, whichever is earlier, subject to specific statutory provisions.
Each condition needs evidence. A GSTR-2B match supports supplier-reporting review but cannot prove receipt, business purpose or absence of a blocked-credit rule.
Blocked, apportioned and restricted credit
| Risk area | Core treatment | Control evidence |
|---|---|---|
| Non-business or exempt use | Credit is restricted to the business and taxable or zero-rated portion under section 17 and applicable rules. | Allocation basis, turnover inputs and reviewer approval. |
| Specified motor vehicles and related services | Section 17(5) blocks defined categories unless a stated exception applies. | Vehicle specification, use case and exception analysis. |
| Food, club, health, travel or employee-related supplies | Specified categories can be blocked, with exceptions that depend on facts and legal obligation. | Nature of expense, onward supply or statutory-obligation support. |
| Works contract and construction | Credit can be blocked for construction of immovable property on own account, subject to the statutory wording and plant-and-machinery treatment. | Contract scope, capitalization and asset analysis. |
| Lost, stolen, destroyed, written-off, gifted or free-sample goods | Section 17(5) restricts credit. | Inventory adjustment and reversal record. |
Do not turn this summary into a keyword blacklist. Exceptions and definitions matter. Route unusual or material cases for tax review and document the exact clause applied.
Documents and evidence for a defensible claim
- Tax invoice or debit note with supplier and recipient GSTIN, unique document identity, date, description, value, rate and tax particulars.
- Bill of entry for import credit, prescribed ISD document for distributed credit, or recipient invoice where the rules require one for reverse charge.
- Purchase order or contract showing the business purpose and commercial terms.
- Goods receipt, delivery evidence, service acceptance, timesheet or other proof that the supply was received.
- Supplier-reporting evidence from the relevant portal statements, including IMS action and GSTR-2B status where applicable.
- Accounts-payable record connecting the tax document to the ledger and guarding against duplicate claims.
- Payment-age report because non-payment to the supplier can trigger proportionate reversal under rule 37, while later payment can support reclaim.
- Blocked-credit and apportionment review, including the calculation method and approval.
Retain source files and decisions, not only a final spreadsheet total. The workpaper should let a reviewer travel from a GSTR-3B Table 4 figure back to each document and forward to any later reversal or reclaim.
Temporary and permanent ITC reversals
| Trigger | Nature | Follow-up |
|---|---|---|
| Consideration and tax not paid to supplier within 180 days | Rule 37 requires proportionate reversal; credit may be re-availed after payment. | Age invoices, reverse at the deadline and link reclaim to payment evidence. |
| Supplier has not furnished the corresponding return by the rule 37A milestone | Temporary reversal with prescribed reporting timing; re-availment is possible after supplier filing. | Monitor vendor return status and preserve later filing evidence. |
| Goods or services not yet received | Condition not yet met; credit may become available when receipt occurs. | Connect reclaim to goods receipt or service acceptance. |
| Blocked credit under section 17(5) | Generally permanent unless the facts fall within a statutory exception. | Record the clause and prevent automated reclaim. |
| Exempt or non-business attribution | Permanent or periodic apportionment under applicable rules. | Maintain calculation inputs and annual adjustments. |
CBIC Circular 170 separates non-reclaimable reversals from temporary reversals in GSTR-3B Table 4. Mirroring that distinction in the subledger prevents permanent ineligibility from reappearing as an aged “recoverable” balance.
End-to-end ITC reconciliation workflow
Start with the purchase and expense ledgers, not with a portal total. Normalize supplier GSTIN, document type, number, date, taxable value and each tax component. Remove duplicates through documented logic, then match to IMS and GSTR-2B. Use GSTR-2A only as a dynamic investigation layer for late reporting and amendments.
For matched items, run receipt, document, business-use, blocked-credit, payment-age and time-limit tests. For book-only records, classify supplier non-filing, GSTIN error, cut-off timing, import or reverse-charge scope, or genuine invalidity. For statement-only records, investigate unbooked liability, wrong-recipient reporting, credit notes and duplicates.
Build a bridge from gross potential tax in books to current eligible credit: subtract permanent ineligibility, current-period temporary reversals, unreceived supplies and unsupported exceptions; add evidenced reclaims from prior temporary reversals. Reconcile that result to GSTR-3B Table 4 and the electronic credit ledger. Obtain approval at both document-exception and return-summary levels, then roll open exceptions forward without losing their original period.
Control reclaims with the same discipline as first-time claims. Require the original reversal reference, evidence that its condition is now satisfied, confirmation that no duplicate reclaim occurred in an earlier period, and a reviewer. This turns a reversal register into a reliable subledger rather than a wish list of old credits.
Worked ITC eligibility example
A registered services company records five inward supplies with ₹1,80,000 total GST. ₹90,000 relates to cloud services used fully in taxable business and has a valid invoice, service acceptance, supplier reporting and GSTR-2B match. ₹36,000 relates to office furniture received and supported. ₹18,000 is on employee leisure-club membership, requiring a section 17(5) blocked-credit analysis. ₹27,000 relates to an annual service not yet accepted. ₹9,000 is on an invoice that has remained unpaid beyond 180 days.
The team claims ₹1,26,000 now for cloud services and furniture. It treats the club amount as permanently ineligible on the stated facts, defers the unreceived service until acceptance, and reverses the unpaid invoice proportionately under rule 37 while retaining it in the temporary-reversal register. When the invoice is later paid, it can assess re-availment with payment evidence.
The example separates four questions that are often collapsed: Was tax booked? Did the document appear in the statement? Are eligibility conditions satisfied now? Is a restriction permanent or temporary? The approved GSTR-3B bridge records each answer, so a later reclaim cannot be made merely because an old spreadsheet labels an amount “pending.”
Frequently asked questions
What is input tax credit in simple terms?
It is eligible GST on business purchases that a registered person credits to its electronic credit ledger and uses against permitted output tax, subject to the Act and rules.
Is every GST amount in the purchase ledger eligible ITC?
No. Eligibility depends on section 16 conditions, prescribed documents, receipt, supplier reporting, tax payment, return filing, time limits, business use and section 17 restrictions.
What is the general section 16(4) deadline?
The current India Code text generally uses 30 November following the end of the financial year to which the invoice or debit note pertains, or filing the relevant annual return, whichever is earlier, subject to specific provisions.
Can ITC be claimed if it is in GSTR-2B?
GSTR-2B is important evidence, but “available” is not conclusive. The recipient must verify all statutory conditions and blocked-credit rules before claiming.
Can reversed ITC ever be reclaimed?
Some reversals are temporary. Rule 37 payment-related credit and rule 37A supplier-filing cases can permit later re-availment when their conditions are met. Blocked credit is not an automatic reclaim candidate.
Can ITC pay reverse-charge tax?
No. The GST Portal’s utilization guidance states that ITC cannot be used to pay reverse-charge liabilities. The recipient pays the liability through cash and separately tests the resulting tax for eligible credit.
Why separate permanent and temporary reversals?
Permanent restrictions should not return to the claim queue. Temporary reversals need a condition, evidence and later review. Separate subledgers prevent accidental reclaim and make the GSTR-3B bridge understandable.
Sources and further reading
- India Code: CGST Act section 16: eligibility and conditions for ITCVerified Jul 25, 2026
- India Code: CGST Act section 17: apportionment and blocked creditsVerified Jul 25, 2026
- Central Board of Indirect Taxes and Customs: Circular No. 170/02/2022-GST on GSTR-3B reportingVerified Jul 25, 2026
- Central Board of Indirect Taxes and Customs: Notification No. 19/2022-Central Tax substituting rule 37Verified Jul 25, 2026
- Central Board of Indirect Taxes and Customs: Notification No. 26/2022-Central Tax amending rule 37 proportionate reversal and introducing rule 37AVerified Jul 25, 2026
Educational disclaimer: This material is general information, not legal, tax, or accounting advice. Check current official guidance and your facts with a qualified professional.
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