It is possible to make legitimate, legal decisions which can impact the amount of tax that you need to pay in any given year. It is an opportunity to see where all your businesses/entities are before the end of the financial year as a whole and see what entitlements you are eligible for. Tax planning is generally done on an annual basis before the end of the financial year, but tax planning and also be down on a situation/specific purpose i.e. you receive an inheritance and want to know where the best place to deposit your money.