The coordination of monetary and fiscal policies has not been much of an issue since at least the early 1980s. At that time, fiscal policy shifted focus to longer-run issues – such as balancing the budget, or setting a tax policy that supports economic efficiency and long-term growth. This left stabilization policy virtually exclusively to the Federal Reserve.
It is also relevant that the average level of interchange rates in Australia is quite low by international standards, particularly the 8 cents benchmark for debit card payments. Credit card interchange fees are also lower than in most countries. One exception is the lower credit card interchange fees in Europe.