How to use this calculator
- Enter the aggregate turnover and the type of supplies.
- Choose the year of turnover to match your situation.
- Read whether e-invoicing applies and the threshold used in the result.
The threshold has been reduced over time; confirm the limit that applies from the date of your invoice.
The result is an estimate for the figures you enter. It is not a filed return, a certificate or professional advice. Rates, thresholds and section numbers change with each Finance Act, and the Income-tax Act, 2025 applies from 1 April 2026 with new section and form numbers.
For the related work, see GST return filing.
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