41857 – Credit and Household Debt | Australian Property Network™

41857 — Credit and Household Debt

Overview

Credit is the other side of every interest rate: the money that is actually borrowed at that price. In Australia almost all of it is borrowed against housing, and the stock of that borrowing, measured against the income that has to service it, is the single most important number for understanding why the property market behaves as it does. Australian households carry debt equal to roughly 178 per cent of a year’s disposable income, among the highest ratios in the world, and three-quarters of it is housing debt.^1,9

This entry explains how banks create credit and fund it, how the household debt burden has grown since the late 1980s and why, how credit growth cycles with interest rates, and how the prudential rules that govern who can borrow how much shape the property market more directly than any other policy setting.

Scope & Boundaries

This entry covers:

How bank lending creates credit, and how banks fund it
Household debt to income: the record from 1988 and what drove it
Housing credit growth through five rate cycles
The prudential framework: serviceability buffers, lending standards, and responsible lending law
What the debt burden means for the transmission of interest rates and for property prices

This entry does not cover:

How the cash rate is set and how it reaches lending rates — addressed in 41851
Mortgage products, structures, and lender selection — addressed in 41400 Property Finance
The theory and critiques of a credit-based monetary system — addressed in 41830

Scope Note

This entry is educational background within an editorial essay series. Its charts use the Reserve Bank of Australia’s published statistical tables on household finances and credit aggregates, cited in full at the end of the page. APN’s certified readings of Australian credit and interest-rate conditions are maintained separately in the 21200 series.

Key Concepts

How credit is created and funded

When a bank approves a mortgage it credits the borrower’s account with a deposit it did not previously hold; the loan creates the deposit, not the other way round. What limits the process is not a fixed pool of savings but the bank’s capital, the regulator’s rules, and the cost of the funding the bank must then attract to hold the loan on its balance sheet. The RBA’s explainer sets out where that funding comes from: “Deposits from Australian households and businesses account for around two-thirds of Australian banks’ total funding”, and bonds and other debt securities issued in financial markets “account for around a third”.³ Lending rates are set against those funding costs plus a margin, which is why they follow the cash rate closely but not exactly; the gap between the two, and how it has widened, is addressed in 41851.

Chart 1

Household debt and housing debt as a share of annualised household disposable income, quarterly, 1988 Q2 to 2026 Q1 (per cent)

Source: RBA Statistical Table E2, Household Finances, Selected Ratios; household debt to income (BHFDDIT) and housing debt to income (BHFDDIH), compiled from ABS Finance and Wealth accounts. Debt is the stock at the end of the quarter; income is annualised disposable income.

The household debt burden

In the June quarter of 1988 Australian households owed 63 per cent of a year’s disposable income, and housing debt was half of that. Financial deregulation, falling inflation, and the halving of interest rates through the 1990s then let households borrow far more against the same income: the ratio passed 100 per cent in 1998, 115 per cent by 2000, and 165 per cent by the end of 2007. The global financial crisis paused it for a decade at around 160 to 170 per cent. The record-low rates of 2016–19 pushed it to a peak of 188 per cent in the June quarter of 2018, and it has drifted down since, to 178 per cent in the March quarter of 2026, as incomes grew faster than borrowing during the tightening. Housing debt did almost all of the work. It rose from 32 per cent of income in 1988 to a peak of 139 per cent in the June quarter of 2022, and at 135 per cent in early 2026 it is 76 per cent of all household debt, up from 50 per cent when the series begins.^1,9 The ratio is not a measure of distress; assets rose faster still, and household net worth is at a record. It is a measure of sensitivity: the higher it is, the larger the effect of any change in interest rates on household cash flow.

Chart 2

Housing credit, growth over the previous twelve months, seasonally adjusted, monthly, August 1977 to July 2026 (per cent)

Source: RBA Statistical Table D1, Growth in Selected Financial Aggregates, housing credit, 12-month-ended growth (DGFACH12), including securitisations. The RBA records series breaks in July 2019 and April 2023 from changes in compilation.

Credit growth through the cycles

Housing credit is the flow that builds the stock. It grew at more than 20 per cent a year at the end of the 1980s, peaking at 23.2 per cent in May 1989 at the top of the boom the 1990 recession ended, and averaged 13.8 per cent a year through the 1990s and 14.4 per cent through the 2000s, peaking again at 21.9 per cent in March 2004. Those two decades are when the debt-to-income ratio was built. Growth then halved: 6.0 per cent a year on average in the 2010s, falling to a series low of 3.0 per cent in late 2019 after the tightening of lending standards that followed the 2017–19 Royal Commission into financial services. The pandemic-era rate cuts lifted it to 8.0 per cent by May 2022; the tightening took it back to 4.2 per cent in 2023–24; and by mid-2026 it was running at about 7.5 per cent, the fastest since 2022, even with the cash rate rising again. Each turn in the credit-growth series leads the turn in house prices by a few months, which is why it is the RBA’s and the regulator’s preferred early warning.^2,8

The cash-flow channel

The debt burden is what makes Australian monetary policy unusually fast-acting. With household debt at 178 per cent of income and most of it at variable rates, a change in the cash rate reaches household budgets within months rather than years. The RBA calls this the cash-flow channel, and it is the largest of the four channels described in 41851 in Australia’s case: with housing debt at 135 per cent of income, each percentage point on mortgage rates moves about 1.35 per cent of household disposable income from borrowers to lenders and savers, before any allowance for fixed-rate loans that reprice later. Because borrowers spend a larger share of their income than savers, the net effect on spending is negative when rates rise and positive when they fall.¹⁰ The same arithmetic explains the asymmetry in the property market: rate rises bite harder on a highly indebted household sector than rate cuts help it.

Serviceability and lending standards

Who can borrow how much is set by the Australian Prudential Regulation Authority (APRA), not by the market. Since 6 October 2021 APRA has expected lenders to assess a new borrower’s ability to repay “at an interest rate that is at least 3.0 percentage points above the loan product rate”, up from the 2.5 percentage points that had been common practice.⁴ APRA confirmed in July 2024 that the buffer “will be kept at 3 percentage points”.⁵ In practice this means a borrower offered a 6 per cent mortgage must show they could service it at 9 per cent, which caps the loan at a multiple of income regardless of what the borrower would accept. APRA’s prudential practice guide on residential mortgage lending sets the wider expectations: verification of income and expenses, limits on interest-only and high loan-to-valuation lending, and reporting of high debt-to-income loans.⁶ These settings did more to slow credit growth in 2018–19, and to limit the damage of the 2022–23 rate rises, than the cash rate itself.

Regulatory & Legal Framework

Two layers of regulation govern household credit. The prudential layer, administered by APRA under the Banking Act 1959, governs the lenders: capital requirements, the serviceability buffer, lending-standard expectations, and the macroprudential tools APRA can deploy when housing credit growth or high-risk lending threatens financial stability, which it did in 2014–15 with investor-lending caps and in 2017 with interest-only limits.^4,5,6 The conduct layer, administered by the Australian Securities and Investments Commission under the National Consumer Credit Protection Act 2009 (Cth), governs the loans: licensing of lenders and brokers, responsible-lending obligations requiring that a loan not be unsuitable for the borrower, hardship provisions, and the National Credit Code that sets disclosure and contract terms.⁷

The RBA holds no lending powers but publishes the Financial Stability Review twice a year, which assesses household and bank balance sheets and is the most complete public account of where mortgage stress sits and how it is moving; its analysis of the share of borrowers with negative cash flow during the 2022–24 tightening is the reference for that episode.⁸ The ABS Finance and Wealth accounts supply the debt and asset stocks from which the E2 ratios are compiled.⁹

Practical Application

Borrowing capacity is a policy variable. The maximum loan a household can obtain is determined by its income, the assessment rate, and the lender’s expense assumptions, all of which are set or bounded by the regulator. When the banks’ standard variable rate rose from 4.52 per cent in April 2022 to 8.77 per cent in November 2023, the rate at which a new borrower had to be assessed rose from 7.52 to 11.77 per cent, and the loan a given income could support over thirty years fell by 31 per cent. Property prices adjusted less than that, because not every buyer borrows to capacity, but the ceiling on what any given buyer can pay moved with the buffer, not with sentiment.

Credit growth leads prices. A turn in the twelve-month housing credit growth series has preceded each turn in national house prices in this period: the 2019 low preceded the 2020–21 boom, the 2022 peak preceded the 2022–23 fall, and the acceleration through 2025 preceded the price recovery. The RBA’s monthly release of Table D1 is therefore the earliest broad indicator of where the market is heading.²

Debt and resilience. A debt-to-income ratio of 178 per cent means a household with $100,000 of disposable income carries, on average, $178,000 of debt; the average conceals a distribution in which a third of households have no debt and recent buyers carry ratios of five or six times income. Stress concentrates in that tail. The Financial Stability Review’s measures of the share of borrowers with high debt-to-income loans, and of those with less than three months of prepayments, are the figures to watch for the property market’s vulnerability to a rise in unemployment.⁸

Investors and owner-occupiers. Housing credit splits into owner-occupier and investor lending, and the investor share is the most policy-sensitive component: APRA’s 2014 cap on investor credit growth and its 2017 limit on interest-only lending each ended an investor-led price cycle within months. Any future macroprudential intervention is likely to target the same segment, which makes the investor split in Table D1 the second series worth following.^2,6

Cross-Series References

41851

Interest Rates: The Price of Money

The cash rate, the standard variable rate, and the widening gap between them.

41856

Employment and the Labour Market

Why unemployment, not interest rates, is what turns debt into default.

41854

Wages and Real Incomes

The incomes that all of this debt is measured against, in nominal and real terms.

41400

Property Finance

Loan types, serviceability, and lender assessment in practice.

Sources

1. Statistical Table E2, Household Finances — Selected Ratios (household debt to income, housing debt to income) — Reserve Bank of Australia
2. Statistical Table D1, Growth in Selected Financial Aggregates (housing credit, 12-month-ended growth) — Reserve Bank of Australia
3. Banks’ Funding Costs and Lending Rates — Reserve Bank of Australia, Explainer
4. APRA increases banks’ loan serviceability expectations to counter rising risks in home lending, 6 October 2021 — Australian Prudential Regulation Authority
5. APRA keeps macroprudential policy settings steady, 29 July 2024 — Australian Prudential Regulation Authority
6. Prudential Practice Guide APG 223, Residential Mortgage Lending — Australian Prudential Regulation Authority
7. National Consumer Credit Protection Act 2009 (Cth) — Federal Register of Legislation
8. Financial Stability Review — Reserve Bank of Australia
9. Australian National Accounts: Finance and Wealth — Australian Bureau of Statistics
10. The Transmission of Monetary Policy — Reserve Bank of Australia, Explainer

This entry is part of the Understanding Money editorial essay series and is presented for general educational context. APN’s certified reading of current Australian interest-rate and credit conditions is maintained at node 21210, Interest Rates.

41857 – Credit and Household Debt