Unfortunately we have yet to see what is left of the ‘real economy’ once this artificial situation expires. But at least the RBA has proved their independence.
The reason monetary policy (changing interest rates) works is because is can bring forward, or delay, consumption. Lower interest rates bring forward consumption, as the reward for saving is lowered and people choose to spend more now rather than save and then spend later time periods. The cost of borrowing is also reduced, and can stimulate debt funded current consumption. Conversely, higher interest rates encourage saving and discourage borrowing.
The Nation Building fiscal stimulus package is bringing forward government spending – the exact opposite of what the RBA is trying to do. The remaining $17billion being spent this year will offset the last 3 interest rate increases – each 0.25% rise increased the interest on Australia’s private debt by $4.8billion/annum; money which would have otherwise been spent on present consumption or investment (of course I have overlooked the impact on savings rates in this calculation).
My gut feeling is that the RBA was far more confident then it should have been, and we may see a repeat of the dramatic change in policy that we saw at the end of 2008 when the cash rate was more than halved in a few short months. There might be some money to be made in foreign exchange - I expect the AUD to decline between now and the end of 2010. Another forecast to be tested.