GST Input Tax Credit (ITC) Rules: Claim Eligibility, GSTR-2B & Invoice Matching
Input Tax Credit (ITC) is the cornerstone of the Goods and Services Tax (GST) framework in India. It prevents the cascading effect of "tax on tax" by allowing registered taxpayers to offset the GST paid on inward purchases against the GST collected on outward sales.
The Four Fundamental Conditions to Claim ITC (Section 16)
Under Section 16(2) of the CGST Act, a registered person can claim ITC only if four cumulative criteria are satisfied:
1. Possession of a valid Tax Invoice or Debit Note issued by a registered supplier.
2. Actual receipt of the goods or services.
3. Payment of tax to the government by the supplier (reflected in GSTR-2B).
4. Filing of valid GST returns (GSTR-3B) by the buyer.
Blocked Credits Under Section 17(5)
Not all business purchases qualify for ITC. The law explicitly blocks credit on specific goods and services, including: Motor vehicles for passenger transport (unless used for commercial driving training or transport business), food and beverages, outdoor catering, health insurance and gym memberships (unless mandated by statutory law for employees), and goods lost, stolen, destroyed, or written off.
Extracting Base Price and GST Component
When auditing incoming vendor invoices, verifying the exact tax breakdown is critical. For an 18% GST inclusive invoice of ₹1,18,000, the base price is ₹1,18,000 ÷ 1.18 = ₹1,00,000, and the claimable ITC equals ₹18,000 (split as ₹9,000 CGST and ₹9,000 SGST for intra-state supplies, or ₹18,000 IGST for inter-state supplies).
Use our GST Calculator to accurately add or extract taxes across all standard 5%, 12%, 18%, and 28% slabs.
Written and reviewed by the AllYouTools Editorial & Research Team. Every formula, statutory citation, and mathematical proof is audited in accordance with our Editorial Policy and verified via our Calculation Methodology.