The M3 is a wider view of the amount of money value in the economy that can be can be used to pay debt. Inflation can mean that there is a surplus of money in the economy and the historical change in the M3 might be the first place to look for those pressures. IANAE. (more)
cam : There doesnt appear to be any correlation: between M3 and CPI in the RBA data between 1970 and 2004.

cam (IANAE)
Cam Riley: South Sea Republic. Freedom, liberty, equity and an Australian Republic.