Simply stated the RDTOH applies to private corporations such as a CCPC that distributes taxable dividends. Canada Revenue Agency(CRA) states "A dividend refund is currently available to a private corporation that pays taxable dividends in a taxation year. The amount of its dividend refund for the year is equal to the lesser of 38 1/3% of all taxable dividends it paid in the year and its refundable dividend tax on hand (RDTOH) balance at the end of the year.".
It is the balance of the refundable dividend tax on hand (RDTOH) at the end of the previous year that is entered on line 460 of the T2 jacket.
There is information available from the CRA at the link below:
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