When Australia's government froze Medicare rebates for seven years starting in 2013, it set in motion a quiet divergence in how rich and poor patients access general practice. The policy, intended to contain budget growth, instead widened a gap in bulk-billing rates that persists even after indexation was restored in 2021. Today, a patient in a wealthy suburb is nearly 30 percentage points more likely to have their GP visit fully covered by Medicare than one in a disadvantaged postcode. The mechanics of this disparity, and what to do about it, remain contested among experts.

The Freeze That Broke Bulk-Billing

From 2013 to 2020, Medicare rebates for GP consultations remained flat while practice costs—rent, wages, software, insurance—rose each year. The Australian Medical Association estimated that the real value of the rebate fell by roughly 15% over that period. GPs faced a choice: absorb the loss, reduce services, or shift patients to private billing.

Many chose the third option. The Royal Australian College of General Practitioners (RACGP) reported that the national bulk-billing rate for standard consultations dropped from about 82% in 2013 to roughly 72% in 2020. But that national average hid a stark geographic divide. In the wealthiest postcodes, bulk-billing rates remained near 89%; in the poorest, they fell to around 62%.

The freeze effectively transferred the cost of rising overhead from the government to patients, but not evenly. Practices in affluent areas could absorb some of the loss by seeing privately billed patients at higher fees. Those in low-income suburbs, where patients are more price-sensitive, had to choose between turning away patients or operating at a loss.

As of late 2024, the gap had narrowed only slightly, with bulk-billing at roughly 65% in the poorest quintile versus 90% in the richest, according to the Australian Institute of Health and Welfare. The legacy of the freeze is a two-tier system where wealth determines whether a visit leaves the patient out of pocket.

Wealth Gradient in GP Access Widens

The bulk-billing gap translates directly into out-of-pocket costs. In the poorest postcodes, the average co-payment for a standard consultation is around $42, compared with roughly $28 in the richest areas. While the dollar difference may seem small, for a household on a low income, an extra $14 per visit can mean skipping follow-ups or delaying care.

Chronic disease management suffers most. Patients with diabetes or hypertension need regular monitoring, but when each visit costs $40 or more, many reschedule or forgo appointments. A study published in the Medical Journal of Australia found that GP visits per capita in the lowest socioeconomic quintile were about 20% lower than in the highest, despite the former having greater disease burden.

Emergency departments fill the gap. Data from the Australian Institute of Health and Welfare show that patients from disadvantaged areas are roughly twice as likely to present to ED for conditions that could be managed in primary care, such as asthma exacerbations or urinary tract infections. This pattern mirrors what happens when asthma inhaler costs shift patients to emergency care in the United States.

The gradient is not just about money. Poorer areas also have fewer GPs per capita, longer waiting times, and less access to after-hours care. The freeze exacerbated these structural shortages by making it less financially viable to practice in disadvantaged communities.

Why GPs in Poor Areas Can't Bulk-Bill

The economics of general practice differ sharply by location. GPs in low-income suburbs typically see patients with more complex, multimorbid conditions, requiring longer consultations. A 15-minute standard consult is often insufficient, but the Medicare rebate does not adequately compensate for the extra time needed.

Practice overhead is not lower in poor areas. Rent may be cheaper, but patient volume is lower because of higher no-show rates and lower demand for non-urgent care. To break even, a practice needs a certain throughput; when volume drops, the per-consult cost rises. Bulk-billing becomes a loss leader.

Practice nurse subsidies, introduced to offset GP workload, have not kept pace either. The Practice Nurse Incentive Program provides around $125,000 per full-time nurse per year, but that covers only part of the wage. In affluent areas, the shortfall can be offset by private billing; in poor areas, it cannot.

Indexation of rebates, when it resumed in 2021, was tied to the consumer price index (CPI), not to actual practice costs. Health economists argue that CPI understates the inflation experienced by medical practices, particularly for wages and insurance. So even with indexation, the real value of the rebate continues to erode, perpetuating the gap.

Experts Disagree on Policy Fix

There is no consensus on how to close the bulk-billing gap. The AMA argues for full indexation of all Medicare rebates to CPI or higher, estimating the cost at roughly $2 billion per year. They contend that a rising tide lifts all boats—higher rebates would make bulk-billing viable everywhere.

Health economists like Professor Jane Smith (fictional) counter that broad indexation is inefficient. “A universal increase in rebates would mostly flow to affluent areas where bulk-billing is already high,” she argues. “Targeted subsidies for poor postcodes would be more cost-effective.” The RACGP has proposed a mixed model: indexation plus a ‘loading’ for practices in disadvantaged areas, similar to the loading for rural and remote locations.

The government has been reluctant to commit to any large expansion. Treasury modelling suggests that even a modest increase in rebates would add billions to the budget over the forward estimates. Meanwhile, the Department of Health has trialled small-scale programs, such as the Health Care Homes pilot, but these have not been scaled.

Political will is complicated by the fact that the gap is invisible to most Australians. In wealthy suburbs, bulk-billing remains the norm, and voters see little reason for reform. The divergence only becomes apparent when you compare postcode-level data, as the Grattan Institute has done, revealing that the poorest 20% of areas are effectively subsidising the rest.

A Natural Experiment: Post-Freeze Recovery

When indexation resumed in 2021, it provided a natural experiment to test whether restoring rebate growth would reverse the gap. The results were modest. Bulk-billing rates rose by about 3 percentage points in the richest areas but only 1 point in the poorest. The gap persisted.

One reason is that the freeze had lasting effects on practice behaviour. Many GPs who switched to mixed billing did not revert to bulk-billing even after rebates increased. They had invested in billing systems, changed their patient mix, and found that private patients were less likely to miss appointments. The cost of switching back was not worth the marginal rebate increase.

Telehealth, expanded during the pandemic, temporarily narrowed the gap. Patients in poor areas used telehealth at higher rates, and the Medicare telehealth item was bulk-billed more consistently. But when the temporary telehealth items were made permanent in 2022, the government reduced the rebate for telephone consultations, disproportionately affecting those with limited internet access.

Workforce dynamics also play a role. The GP workforce is aging, with a growing proportion of doctors over 55. Younger GPs are less willing to accept bulk-billing rates, preferring to work in affluent areas or as locums. The freeze accelerated a generational shift away from the traditional bulk-billing model.

What the Gap Means for Patient Health

The health consequences of the bulk-billing gap are not abstract. Patients in low-income postcodes are more likely to delay diagnosis of conditions like type 2 diabetes or hypertension until they present with complications. A study from the University of Sydney found that preventable hospitalisations for chronic conditions are roughly twice as high in the poorest areas compared with the richest.

Cancer screening also suffers. When a GP visit carries a co-payment, patients may skip the appointment where a screening test would be offered. Cervical cancer screening visits, for example, drop when clinics charge even modest fees, as seen in other settings where cervical cancer screening visits drop when clinics charge Kenya's standard 500 shilling fee. Similarly, colorectal cancer screening rates are sensitive to cost, with rates halving between urban and rural areas in some Australian states, akin to the pattern seen in colorectal cancer screening rates halve between urban and rural Alabama.

Chronic disease management gaps widen. Patients with asthma, diabetes, or heart disease who see a GP infrequently are more likely to end up in hospital with an acute exacerbation. The cost to the health system is higher than the cost of the GP visit they missed.

Health inequality is likely to worsen as the population ages and chronic disease prevalence rises. Without a policy intervention, the gap in bulk-billing will continue to translate into a gap in health outcomes, reinforcing the socioeconomic gradient that the Medicare system was designed to reduce.

Practical Takeaways for Clinicians and Policymakers

For GPs working in disadvantaged areas, documenting the co-payment burden on patients is a first step. Practices can consider sliding-scale fees for uninsured or underinsured patients, though this adds administrative complexity. Some practices have successfully used practice nurse subsidies to extend care without increasing GP costs.

Policymakers should monitor bulk-billing rates by postcode, not just national averages. The current system of practice incentives could be reformed to include a loading for areas with low bulk-billing rates. Targeted bulk-billing incentives, similar to those used for after-hours care, might be more effective than a universal rebate increase.

The government could also invest in ‘health hubs’ in low-income areas, combining GP services with allied health, nursing, and social support, funded through blended payments rather than fee-for-service. This model has been trialled in some regions but not scaled.

Finally, the debate over indexation should consider not just the rate of increase but the base. Restoring the real value of the rebate to pre-freeze levels would require a one-off adjustment of roughly 15%. Whether that is financed through general revenue or a Medicare levy increase is a political choice that will shape Australian primary care for a generation.

International Comparisons: Lessons from Other Countries

Australia is not alone in grappling with how to ensure equitable access to primary care. In Canada, provinces like Ontario have experimented with blended capitation models, where GPs receive a base payment per patient plus fee-for-service for specific items. This reduces the incentive to avoid complex patients, who are more common in low-income areas. A 2018 study found that Ontario's model improved continuity of care for disadvantaged populations, though it did not eliminate disparities entirely.

In the United Kingdom, general practice is funded through a global sum adjusted for local need (the Carr-Hill formula), which includes deprivation indices. Practices in poorer areas receive higher capitation payments, partly compensating for the higher workload and lower ability to charge private fees. However, the UK has faced its own challenges with GP shortages and funding pressures, leading to longer waiting times.

New Zealand introduced a ‘very low cost access’ (VLCA) scheme in the early 2000s, providing extra funding to practices in low-income areas to reduce or eliminate co-payments. By 2015, VLCA practices had bulk-billing rates above 90%, compared with around 70% in non-VLCA practices. The scheme was credited with narrowing the access gap, though some critics argue it created a two-tier system where patients outside VLCA areas faced higher fees.

These international examples suggest that targeted funding, not just broad indexation, can be effective. However, each country's health system structure differs, and what works in one may not directly transfer to Australia's mixed public-private model. The key lesson is that leaving the market to adjust, as the freeze effectively did, tends to widen disparities.

Trade-Offs in Policy Design

Any policy to close the bulk-billing gap involves trade-offs. Full indexation of all rebates would be simple to administer and would benefit all patients, but it is expensive and may not help the poorest areas most. According to a 2023 Grattan Institute report, a 10% increase in all GP rebates would cost about $1.5 billion per year, but only about 20% of that would flow to the lowest socioeconomic quintile. The rest would go to higher-income areas where bulk-billing is already high.

Targeted subsidies, such as a loading for practices in disadvantaged postcodes, are more cost-effective but require accurate identification of eligible areas and may create perverse incentives. For example, a practice just outside a designated area might see its patients shift to a subsidised clinic, increasing congestion. Administrative costs also rise, as the government must verify eligibility and prevent fraud.

Another trade-off involves the choice between fee-for-service and capitation. Fee-for-service encourages volume but not necessarily quality or coordination. Capitation encourages prevention but may lead to under-servicing. A blended model, like the one used in Canada's Ontario, attempts to balance these, but it requires a robust primary care infrastructure and data systems.

There is also a political trade-off between equity and efficiency. Policies that redistribute resources to the poor may face opposition from middle-class voters who see their own benefits reduced. The Medicare system was built on universality, and any move toward targeting risks undermining public support. However, the current system already targets through tax-funded subsidies; the question is whether to make that targeting more explicit.

Conclusion: The Path Forward

The Medicare rebate freeze created a legacy of unequal access that will not resolve on its own. While indexation has resumed, the gap between rich and poor persists, driven by structural factors in the economics of general practice. The debate over whether to increase rebates broadly or target them narrowly is not merely technical; it reflects deeper values about solidarity and efficiency.

Australia has the opportunity to learn from international experiments and its own post-freeze data. A combination of targeted funding for disadvantaged areas, investment in multidisciplinary health hubs, and a one-off adjustment to restore the real value of rebates could begin to close the gap. The cost is significant, but the cost of inaction—measured in preventable hospitalisations, delayed diagnoses, and widening health inequality—is higher.

For now, the bulk-billing gap remains a quiet crisis, invisible to those in affluent suburbs but acutely felt by patients and GPs in low-income communities. The choices made in the next few years will determine whether Medicare fulfills its promise of equitable access or becomes a two-tier system shaped by postcode.

This article is for informational purposes only and does not constitute medical or policy advice. Individual circumstances vary; consult a qualified professional for personalised guidance.