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GST Input Tax Credit Calculator

Find your net GST payable after input tax credit.

Last updated: 20 Aug 2026

Quick answer

Net GST payable = output GST (on sales) − input GST (on purchases), if positive: any excess input credit carries forward. For example, ₹18,000 output minus ₹11,000 input is ₹7,000 payable. Enter both above.

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Input Tax Credit (ITC) lets you offset the GST paid on purchases against GST collected on sales: net payable = output GST − input GST (excess ITC carries forward).

How to calculate GST input credit

  1. 1 Enter the GST collected on your sales (output GST).
  2. 2 Enter the GST paid on your purchases (input GST).
  3. 3 We show the net GST payable.

Frequently asked questions

What is input tax credit?
It is the GST you paid on business purchases, which you can set off against the GST you collect on sales.
What if input credit exceeds output?
The excess ITC is carried forward to the next period (or refunded in specific cases like exports).
Can I claim ITC on everything?
No — some items are blocked credits (e.g. certain personal or ineligible expenses) under GST rules.

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