How to use the GST Interest Calculator
- Enter GST paid late.
- Enter days of delay.
- Tap Calculate to see the result.
- Tap Reset to clear the fields and try again.
Last updated: 1 November 2026
GST Interest Calculator
Interest on GST paid after the due date.
Result
Fill in the fields and tap Calculate to see your result.
Estimate based on the figures you enter. Check with a tax professional or the official income tax portal.