Australia's approach to population growth, characterized by a "patchwork of visa programs" and "chronically wrong immigration forecasts," has led to a persistent infrastructure crisis and a decline in public trust, according to an analysis.

The nation currently lacks a comprehensive population policy, instead relying on visa settings that are frequently adjusted without clear objectives for national growth size or speed. Housing, hospitals, schools, and transportation are often treated as secondary concerns, resulting in a "policy-making" that is "back to front," the analysis states. This has transformed the immigration debate into a deeply divisive issue.

Both major political parties have historically promoted the economic advantages of high immigration levels while avoiding substantive discussions about the scale and methods of population growth. This "bipartisan failure" has left voters feeling that immigration is an "economic necessity" that simultaneously leads to a "per-capita recession," marked by difficulties in accessing housing and strained infrastructure.

Recent population figures highlight the inaccuracy of past predictions. In 1998, the Australian Bureau of Statistics (ABS) forecast that the country's population of 16.5 million would reach between 23.5 and 26 million by 2051. By 2026, Australia's population has already surpassed this projection by approximately two million people, now exceeding 28 million and growing at an annual rate of 1.5 percent.

At the current growth pace, Australia's population is projected to reach 40 million by 2050, 50 million by 2065, and 60 million by 2077. Meeting these projected numbers would require significant expansions in national capacity. For instance, reaching 40 million necessitates approximately 5 million additional dwellings, with higher populations demanding substantially more homes. These estimates do not account for existing housing backlogs, the replacement of aging stock, or the impact of shrinking household sizes, which would further increase housing needs.

Beyond housing, these population increases will strain other essential services, including hospital beds, classrooms, water supply, and the power grid. The analysis also notes that Australia's aging demographic means certain services, such as aged care, require accelerated ramp-up independent of overall population growth.

To address these systemic failures, the analysis proposes that the Treasury's Centre for Population publish a "Population Choices Paper." This document would present alternative population scenarios based on projected growth rates and detail the potential impacts on housing, the tax base, congestion, and per-capita Gross Domestic Product (GDP). Such a framework would also need to stress-test varying fertility and mortality rates, as population growth is influenced by factors beyond immigration.

The proposed system includes a process where, before each federal election, the Centre for Population would issue a common demographic baseline. Political parties would then declare their preferred population targets, with the consequences of each modeled against identical assumptions. This would enable voters to compare platforms based on predictable outcomes, forcing advocates of higher immigration to address housing and congestion, while those favoring lower immigration would need to confront issues like workforce shortages and an aging population.

This approach emphasizes the integrated nature of governmental responses to population shifts. While the Commonwealth government controls immigration, states hold significant influence over housing and infrastructure. Therefore, the national cabinet is identified as the crucial forum for debating these interconnected issues.

Accountability would be maintained through annual reporting, tracking targeted versus actual growth, forecast versus reality in migration numbers, and promised versus delivered infrastructure. "Material failures" would require public explanation. The objective is not to eliminate politics from the immigration debate but to foster honesty and accountability within it. The ultimate goal is to establish a permanent and transparent system where governments can present population choices, the public can understand their consequences, and the public service can implement policy effectively.