One of the major differences between New Zealand and Australia is their respective political systems and this difference may have contributed to the much stronger financial performance of the New Zealand Government in recent years.
Australia has a bicameral, federal system with 13 houses of parliament and 782 elected representatives while New Zealand has a unicameral structure with only one house and 119 current members.
Australia has an odd number of houses because Queensland has only a lower house whereas the other five states, and the federal government, have upper and lower houses.
A number of academic studies have looked at the merits of unicameral versus bicameral systems. These studies have a slightly positive bias towards unicameral systems, which are more prevalent in smaller countries, although the conclusions are not clear cut.
A paper, Unicameral v. Bicameral: Pros and Cons, by Ava Alexandar, Molly Milligan, Robert Stern and Tracy Westen sums it up this way: "The strength of the unicameral system is its simplicity, transparency and efficiency - values that have generated responsive and accountable legislative systems in Nebraska and New Zealand.
"By contrast, the strength of the bicameral system is its greater deliberation, expertise and legislative oversight. Either system, however, comes at a price. The unicameral system may lack effective oversight of both itself and the executive branch, and the bicameral legislature may witness great gridlock, log-rolling, and buck passing, in addition to less transparency."
The recent political turmoil in the United States clearly indicates that the bicameral, federal system can result in serious political instability.
Recent Australasian evidence demonstrates that New Zealand's unicameral structure is working much better than Australia's bicameral system from both a stability and financial performance point of view. New Zealand has had only three prime ministers since 2000 while Australia has had six and the recent Australian Budget, and next week's NZ Budget, clearly shows that our Government is managing its financial affairs more effectively than the Australian Federal Government.
The concerns raised by the Alexandar, Milligan, Stern and Westen paper about oversight problems with unicameral systems may have been overcome in New Zealand by the checks and balances created by our Mixed-Member Proportional representation (MMP) system.
The Australian Budget, which was released on May 3, shows that the Federal Government is forecasting a deficit of A$37.6 billion for the June 2017 year, its ninth consecutive deficit. The latest deficit equates to 2.1 per cent of GDP compared with a recent deficit high of 4.2 per cent of GDP in 2009-10.
The Federal Government is expecting the deficit to decline to A$29.4b in 2018-19 and to A$21.4b the following year.
Meanwhile, the Federal Government's net debt position has gone from a net surplus of A$38.8b in June 2008 to a net deficit of A$325.1b at the end of next month. Net debt comprises all financial liabilities minus all financial assets of general government.
The June 2017 net debt to GDP ratio is 18.6 per cent, still low by international standards.
One of the obvious conclusions from these figures is that the Australian Government has borrowed its way out of the global financial crisis and this strategy will continue, with its net debt forecast to expand to A$355b by June 2018 and A$375b a year later.
In addition, the six Australian state governments will have a small combined budget deficit for the 2016-17 year and will have total net debt in excess of A$100b at the end of next month.
The Australian Budget was not greeted with great enthusiasm across the Tasman. The ANZ Bank noted: "This is an ambitious Budget that looks to change the game on infrastructure, deliver some measures around fairness while looking to achieve a reasonably credible path back to surplus. It is not without risk, not least in its reliance on increased revenue to close the gap with spending and the continued growth in gross (and net) debt".
Other commentators were highly critical of the additional tax on banks and unwillingness of the Federal Government to initiate major tax reform. The latter is consistent with earlier comments in this column that bicameral systems "may witness great gridlock".
In light of these figures it is not surprising that the Australian business community is becoming increasingly frustrated with the country's political systems and its political leaders.
Government finances are in a far better shape on this side of the Tasman even though the New Zealand Government experienced large budget deficits in 2010-11 and 2011-12, mainly due to the Christchurch earthquakes.