GST calculator

GST Rate Change Calculator

Find out whether the old or new GST rate applies when the rate changes (wef 22 Sep 2025).

Pre-filled with 22 September 2025 (GST rate rationalisation). Change it for any other rate change.

When the goods were supplied or the service was provided.

The earlier of the date of entry in your books and the date of credit to your bank account.

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