Input Tax Credit lets you reduce the GST you pay on sales by the GST you already paid on business purchases. Done right, it keeps your working capital healthy. Done carelessly, it leads to blocked credit, notices and interest.
What ITC actually is
When you buy goods or services for your business, you pay GST to your supplier. When you sell, you collect GST from your customer. ITC means you set off the tax you paid against the tax you collected, and pay only the difference to the government.
The conditions to claim it
- You have a valid tax invoice from a registered supplier.
- You have actually received the goods or services.
- The supplier has paid the tax and filed their return, so the invoice appears in your GSTR-2B.
- You have paid the supplier within 180 days of the invoice.
- The purchase is used for business, not for blocked categories.
Where MSMEs lose credit
The most common cause is supplier mismatch — a vendor who does not upload the invoice or files late means the credit does not show in your GSTR-2B, and you cannot claim it. Other traps include claiming ITC on blocked items, missing the 180-day payment rule, and poor reconciliation between purchase records and the portal.
Calculate your Rule 42/43 ITC reversal →
How to protect your ITC
Reconcile your purchase register with GSTR-2B every month, follow up with suppliers who have not filed, avoid claiming on blocked categories, and keep clean invoice records. A little monthly discipline here directly protects your cash flow.
This article is general information, not tax or legal advice. Rules can change; confirm specifics for your business before acting.
