Tax allowances or tax depreciation acts as a tax deduction which reduces a property owner's assessable income and can significantly enhance the net return from their investment. Simply put it means a property investor can reduce the amount of tax they pay which puts more money back into their pocket to spend on other things. This is particularly useful when considering the purchasing power of money at present is usually stronger than in the future, when taking into account the weakening effects of inflation on the monetary value of the dollar. Simply put, you can buy more at present than you could in the future with the same amount of money.