Tonga Consumption Tax (CT) calculator
Add Consumption Tax (CT) to a net price or take it out of a gross price for Tonga. The rate is filled in from QuoteBill's data and you can change it. Nothing you type leaves your browser.
What QuoteBill's data says about Consumption Tax (CT) in Tonga
The rate is shown as it was recorded in QuoteBill's data on 2026-09-17. That is not a statement that it is the rate in force today.
- Name of the tax in the data
- Consumption Tax (CT)
- Standard rate in the data
- 15%
- Currency
- TOP, 2 decimal places
- Source
- Tonga Ministry of Revenue and Customs: Consumption Tax Overview
- Kind of source
- The tax authority or the government
- Data checked on
- 2026-09-17
- Rate in force from (as recorded)
- 2005-04-01
A worked example
Starting from a net amount of TOP 1,234.00 at 15%: Consumption Tax (CT) comes to TOP 185.10 and the gross amount to TOP 1,419.10.
Starting from the gross amount of TOP 1,419.10 at 15%: the net amount is TOP 1,234.00 and the Consumption Tax (CT) is TOP 185.10.
How the result is worked out
From a net amount: tax = net × rate, rounded half up to the smallest unit of the currency (TOP: 2 decimal places). From a gross amount: tax = gross × rate ÷ (100% + rate) and net = gross − tax, so net and tax always add up to the gross amount.
A withholding or other deduction is worked out on the net amount, or on the amount with tax if you choose that, and taken from the gross amount to give the amount payable. You type its rate yourself; nothing is filled in.
Before you rely on it
Rates and rules change; reduced rates, exemptions and thresholds are not covered here; check with the tax authority or an adviser.
This is a calculator, not tax advice. QuoteBill does not say that the rate shown is current beyond the date given on this page.