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What is an input tax credit (ITC)?

Short answer

An ITC lets GST/HST registrants recover the GST/HST paid on business purchases. Keep receipts showing the supplier's GST/HST number to support every claim.

Detailed answer

Meet the eligibility conditions

An input tax credit generally relates to GST/HST paid or payable on purchases used in commercial activities by a registrant. Personal use, exempt activities and restricted expenses can limit a claim. The required invoice details depend on the amount and circumstances; a supplier's number alone may not be enough.

Document the business use

Keep the invoice, supplier information, description, tax amount and evidence of how the purchase is used. Allocate mixed-use costs on a supportable basis and check current claim time limits. Reconcile the ITC calculation to your ledger before filing, and have unusual or large purchases reviewed by your tax adviser.

Official sources

Published by Expert Bookkeeping Services · Last updated 2026-11-01. General information only — confirm specifics for your situation with a qualified adviser.

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