It is a plan that we use by analysing your financial situation to minimize your tax liability legally. A simple example: Interest/insurance paid in advance for your investment property if your income is going to be less next financial year. It is about effective use of tax deductions, tax offsets, tax efficient investment and more. Actions cannot be reversed without paying tax therefore, it is always better to have good understanding of taxation system and have short and long term tax planning to minimize the tax as a whole.