Input Tax Credit (ITC) — How to Claim, Rules and Common Mistakes 2025

Input Tax Credit (ITC) is one of the most powerful features of the GST system — it allows businesses to deduct the tax they paid on purchases from the tax they owe on sales. Claiming ITC correctly can significantly reduce your GST liability. But the rules are strict, and mistakes can result in demand notices and penalties. Here is everything you need to know.

What is Input Tax Credit?

ITC is the credit a registered taxpayer gets for GST paid on inward supplies (purchases of goods and services) used for business purposes. It can be set off against the GST payable on outward supplies (sales). For example, if you pay ₹18,000 GST on purchases and owe ₹30,000 GST on sales, you only need to pay ₹12,000 in cash — the rest is set off using ITC.

Conditions to Claim ITC (Section 16)

Four conditions must all be satisfied to claim ITC:

• Condition 1: You must be a registered taxpayer under GST
• Condition 2: You must have received the goods or services
• Condition 3: The supplier must have filed their GSTR-1 and the invoice must reflect in your GSTR-2B
• Condition 4: You must have paid the supplier's invoice (including the GST component) within 180 days of the invoice date

If payment is not made within 180 days, the ITC already availed must be reversed along with 18% interest, and can be reclaimed only when payment is actually made.

Time Limit for Claiming ITC

ITC can be claimed only up to the earlier of: (a) the due date of filing GSTR-3B for November of the following financial year, or (b) the date of filing the annual return (GSTR-9). In practice, this means you have until 30 November to claim ITC for any invoice of the previous financial year.

Blocked Credits Under Section 17(5)

Certain inputs are specifically blocked — ITC cannot be claimed on these even if used for business:

• Motor vehicles and conveyances (with exceptions for transport, driving schools, passenger vehicles business)
• Food, beverages, beauty treatment, health services, memberships of clubs, fitness and outdoor catering
• Works contract services for construction of immovable property (except plant and machinery)
• Goods or services used for personal consumption
• Free samples and gifts
• Goods or services used exclusively for making exempt supplies

GSTR-2B Reconciliation

GSTR-2B is the auto-populated ITC statement generated for each taxpayer based on the GSTR-1 and GSTR-5 filings of their suppliers. It is available on the 14th of each month. You should reconcile your purchase register with GSTR-2B before filing GSTR-3B to ensure you are claiming only eligible ITC and not claiming ITC on invoices not yet reported by suppliers.

Reversal of ITC

ITC must be reversed in situations including: goods returned, goods written off, goods used for exempt supplies (proportionate reversal), payment not made to supplier within 180 days, and goods or services used for personal purposes.

Conclusion

ITC is valuable but complex. The rules around eligibility, blocked credits and reversals require ongoing attention. SPOTON's GST experts manage ITC reconciliation, ensure you claim all eligible credits and protect you from compliance risks. Get in touch for professional GST services in Kerala.