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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteGST input tax credit (ITC) lets a GST-registered business set off eligible GST paid on purchases against GST collected on its taxable sales. You can generally claim it when the purchase is used, or intended to be used, in your business and you satisfy the invoice, receipt, tax-payment, return-filing, apportionment, payment and timing rules. A consumer or an unregistered person cannot claim the ordinary section 16 credit. Whether a particular invoice qualifies depends on your registration, business use, documents, supply facts, return history and tax period; this is a general explanation, not a ruling on an individual claim.
What GST input tax credit means
GST is charged at different stages of the supply chain. A registered business normally charges GST on its outward taxable supplies and pays GST on eligible inward purchases. ITC prevents the same tax from becoming a permanent cost at every stage: the business deducts eligible input tax from its output-tax liability and pays the balance.
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For example, if a registered wholesaler has ₹18,000 of eligible input tax and collects ₹30,000 on taxable sales during a period, the credit may reduce the net cash tax payment to ₹12,000, subject to all statutory conditions and any required reversals. ITC is not a cash refund for every business expense, and it is not available merely because a supplier printed GST on an invoice.
Who can claim ITC under GST?
A registered person using purchases for business
Section 16(1) of the Central Goods and Services Tax Act, 2017 (CGST Act) gives the entitlement to a registered person for goods or services used, or intended to be used, in the course or furtherance of business. Registration is therefore the starting point. The ordinary entitlement does not apply to an individual buying something privately, an unregistered consumer or a business that has not obtained the required GST registration.
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Business purpose must be real and supportable. Stock for resale, raw materials, equipment used in production, professional services for business operations and office rent used for taxable activity may qualify when the other conditions are met. A purchase made mainly for an owner’s personal use does not become eligible simply because the invoice is issued to the business.
Composition-taxpayer purchases
A supplier paying tax under the composition scheme cannot charge GST separately on its invoice. Because no GST is charged by that supplier, the buyer has no input tax charged on that purchase to claim as ITC. Check the supplier’s tax status and the document type before recording a credit.
Core conditions before you claim
Section 16(2) sets the principal tests. Treat the following as a file-by-file checklist rather than as a one-time registration exercise:
- Hold a prescribed tax document. Usually this is a valid tax invoice or debit note. Rule 36 also recognises documents such as a bill of entry for imports and an Input Service Distributor document where applicable.
- Receive the goods or services. A paper invoice without actual receipt is not enough. If goods are delivered to another person on your direction, the Act provides a deemed-receipt rule. When a supply arrives in lots or instalments, entitlement arises when the last lot or instalment is received.
- Confirm the tax condition. The tax charged on the supply must be paid to the government, subject to the Act and applicable procedures. Keep supplier and transaction records that allow the purchase and tax to be reconciled.
- Furnish the required return. The recipient must furnish the return under section 39. A credit that is otherwise eligible still requires timely and accurate return reporting.
- Check use, exclusions and timing. Apportion mixed use, remove blocked categories, monitor the 180-day supplier-payment rule and take the credit within the statutory deadline.
Return forms, supplier-document reporting and matching procedures can change. Use the rule and return-period instructions applicable to the tax period instead of relying on an old invoice checklist.
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Documents and evidence to retain
Your accounting entry should be backed by a document trail that lets an auditor or tax officer connect the purchase to the business and to the return in which credit was taken.
| Evidence | What it establishes | Practical check |
|---|---|---|
| Supplier tax invoice | Supplier, recipient, taxable value and GST charged | Check legal names, GSTINs, invoice number and date, tax rate and arithmetic. |
| Debit note | A later increase or correction to taxable value or tax | Link it to the original invoice and record it in the correct period. |
| Bill of entry | IGST paid on an imported consignment | Match the document to customs records and the goods received. |
| Input Service Distributor document | Distribution of eligible input services to a recipient registration | Verify the distribution basis and the recipient GST registration. |
| Receipt and use records | Actual delivery and business purpose | Keep goods-received notes, contracts, service completion evidence and an asset or inventory record. |
| Payment ledger and bank evidence | Payment to the supplier within the required period | Track invoice value plus tax separately where necessary. |
An invoice should not be treated as proof of receipt by itself. For services, retain the agreement, work product, approval or other evidence showing that the service was supplied to the registered business.
How business use and exempt supplies limit credit
Business and personal use
When an item or service serves both business and private purposes, only the business-attributable portion is eligible. For instance, a phone used 70% for business and 30% privately cannot support unrestricted credit; the private portion must be excluded under the prescribed method. Apply a reasonable, documented basis consistently and update it when the pattern of use changes.
Taxable, zero-rated and exempt activity
Common input tax used for taxable supplies, including zero-rated supplies, is distinguished from input tax attributable to exempt supplies. Credit linked exclusively to exempt activity is not available. Common credit must be apportioned under the statutory and prescribed rules, commonly referred to through the Rule 42 and Rule 43 framework for inputs, input services and capital goods. Keep the calculation, turnover figures and adjustments with the return records.
A business that has both taxable and exempt turnover should not claim the full GST on shared rent, utilities, software or professional fees without an attribution calculation. Reversals may be required when the final figures for a financial year differ from the provisional allocation.
Blocked credits under section 17(5)
Even a business purchase with a valid invoice can be disallowed by section 17(5). The section contains exceptions, so the categories below are a warning to investigate, not an unconditional statement that every item is blocked.
- Specified motor vehicles and conveyances, subject to the statutory exceptions for qualifying uses such as certain further supplies, passenger transport, training or transportation of goods.
- Specified food, beverages, outdoor catering, beauty treatment, health services, cosmetic and plastic surgery, life insurance and health insurance, and club or similar membership services, unless an exception applies or the employer is obliged to provide the benefit under law.
- Services used for personal consumption rather than business activity.
- Goods given as gifts or free samples.
- Goods lost, stolen, destroyed, written off or disposed of by way of gift or free samples.
- Other categories expressly listed in section 17(5), including specified construction-related works, subject to the wording and exceptions in force for the transaction.
Read the exact subsection and exception for the date and facts involved. Do not rely on a broad rule such as “all cars” or “all insurance is blocked.”
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Depreciation on the same tax component
If you claim income-tax depreciation on the GST component of capital goods or plant and machinery, you cannot also claim ITC on that same tax component. Decide which tax treatment applies before finalising the asset register and tax return.
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The 180-day payment rule
When a recipient does not pay the supplier the value of the supply plus tax within 180 days from the invoice date, the corresponding ITC must be paid or reversed with applicable interest. This is a timing adjustment, not a permanent loss in every case: after the recipient pays the supplier, the credit may be taken again, subject to the other conditions and the return procedure.
The proviso excludes supplies on which tax is payable under reverse charge. Keep an ageing report for unpaid invoices, identify the credit connected with each invoice and document both the reversal and any later re-availment. The 180-day clock is measured from the invoice date, so do not wait until year-end to review old balances.
Current time limit for claiming ITC
The current general wording of section 16(4) bars taking ITC on an invoice or debit note after 30 November following the end of the relevant financial year or after furnishing the relevant annual return, whichever is earlier. This replaced the older formulation commonly described as the September-return deadline.
| Question | Current general rule |
|---|---|
| Which document is covered? | An invoice or debit note for the relevant supply. |
| What is the cutoff? | 30 November following the end of the relevant financial year. |
| What can make the cutoff earlier? | Furnishing the annual return for that financial year, if it occurs before 30 November. |
| Can a special provision change the result? | Yes. Section 16(5) and section 16(6) contain narrow statutory exceptions for specified periods and registration circumstances. |
Retrospective and registration-related relief
The Finance (No. 2) Act, 2024 inserted sections 16(5) and 16(6) with effect from 1 July 2017. CBIC Circular No. 237/31/2024-GST explains specified retrospective relief for invoices or debit notes from financial years 2017–18 through 2020–21 and situations involving cancellation followed by revocation of registration. These provisions are fact-specific. They do not give every taxpayer a general extension beyond the ordinary deadline.
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Check the exact financial year, registration dates, cancellation and revocation orders, annual-return filing date and the subsection that may apply. Older FAQ pages that still mention a September deadline should not override the amended statutory text and current circular guidance.
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- Confirm the claimant. Verify that the GST registration receiving the supply is active for the relevant period and that the purchase relates to that registration’s business.
- Classify the supply. Mark it as resale stock, input, input service, capital goods, import or another category. Flag motor vehicles, employee benefits, food, insurance, construction, gifts and other section 17(5) risk areas.
- Validate the document. Check the supplier’s GSTIN, your GSTIN, invoice or debit-note details, place of supply where relevant, taxable value and tax amount. For imports, retain the bill of entry.
- Prove receipt. Match the invoice to a goods-received note, inventory entry, service acceptance, contract milestone or other evidence. For instalments, record the date the final lot was received.
- Determine attribution. Separate personal or non-business use and calculate the taxable-versus-exempt apportionment for common inputs.
- Check supplier and return conditions. Reconcile the document with supplier reporting and your purchase register, investigate differences and include eligible credit in the prescribed return.
- Start the 180-day monitor. Set a due date from the invoice date, follow up unpaid balances and prepare any required reversal with interest.
- Check the deadline. Confirm that the credit is taken before 30 November following the relevant financial year or before the annual return, whichever is earlier, unless a documented section 16(5) or 16(6) exception applies.
- Retain the file. Store the invoice, receipt evidence, business-purpose note, attribution calculation, payment proof and return reconciliation together.
Examples of common fact patterns
| Purchase | Likely treatment | Checks needed |
|---|---|---|
| Raw materials bought for taxable manufacturing | Generally eligible | Valid invoice, receipt, supplier tax and return conditions, and timely claim. |
| Office laptop used partly at home for private activities | Business portion only | Document the allocation and exclude private use. |
| Invoice from a composition dealer | No ITC of GST on that invoice | Confirm that the supplier did not charge GST separately. |
| Shared rent for taxable and exempt services | Apportionment required | Separate exclusive use and calculate common credit under the prescribed method. |
| Supplier invoice unpaid for more than 180 days | Reverse or pay the related credit with applicable interest; re-avail after payment | Track invoice date, amount paid and later re-availment. |
| Imported equipment supported by a bill of entry | Potentially eligible IGST credit | Match the bill of entry, import records, receipt and business use; check depreciation treatment. |
| Passenger car for an owner’s ordinary travel | Often blocked | Read the section 17(5) exception for the vehicle’s actual business use before claiming. |
Common mistakes and how to correct them
- Claiming from a pro-forma or incomplete invoice: obtain the prescribed tax document before reporting credit.
- Taking credit before receipt: defer the claim until goods or services are received; for lots, wait for the last lot where the statutory rule requires it.
- Ignoring exempt turnover: recalculate common credit and post the required reversal rather than leaving the full amount in the ledger.
- Assuming supplier non-compliance is irrelevant: investigate unmatched invoices and retain evidence of follow-up and tax reporting. The tax-payment condition remains part of section 16(2).
- Missing the 180-day review: use an ageing report linked to invoice dates and calculate interest on the required reversal.
- Using the old September deadline: apply the current 30 November-or-annual-return rule and test any narrow statutory exception separately.
- Depreciating the GST component and claiming ITC: remove one of the two tax benefits for the same component.
- Calling every vehicle, meal or insurance expense blocked: inspect the exact section 17(5) wording and its exceptions.
When professional review is sensible
A GST practitioner or chartered accountant can be useful when a purchase spans taxable and exempt lines, involves capital goods or construction, falls within a blocked-credit category with an exception, relates to a cancelled and revoked registration, or requires a late-period correction. A professional review should test the actual invoice, registration, contracts, receipt evidence, payment history and returns; no software or checklist can guarantee that a purchase qualifies.
Bottom line for an ITC decision
Start with five questions: Is the claimant GST-registered? Is the purchase for business? Is there a prescribed document and proof of receipt? Have the tax, return, apportionment and blocked-credit rules been satisfied? Was the credit taken within the current deadline, with the 180-day payment rule monitored? A “yes” to all five supports a claim, while any unresolved answer requires correction or specialist advice before reporting the credit.
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