Work out your net profit
Subtract provisional tax of 17.5% from your Māori authority profit.
The amount left is the net profit available for distribution.
Calculate the ratio
Divide your chosen credit amount by the available distribution.
The amount left is the base ratio of credits to distributions.
Apply this ratio to future distributions
You can complete a Ratio change declaration - IR407 to change your base ratio.
The maximum credit ratio you can use is 17.5:82.5.
This means up to $17.50 of Māori authority credits can be attached to every $82.50 of dividends.