Countries With the Highest Household Debt: How to Read the Risk

Household debt is often presented as a league table: one country is labelled the most indebted, another the safest, and a single percentage is treated as a forecast of crisis. That approach is misleading. Household debt can be measured against disposable income, gross domestic product, assets or debt-service payments. A country can have a high stock of mortgage debt and still have strong borrower incomes, fixed-rate contracts and large housing equity. Another country can have a lower aggregate ratio but severe problems among low-income households, variable-rate borrowers or people with unsecured consumer credit.

The OECD defines household debt as liabilities that require households to make future interest or principal payments. Its indicator includes loans—primarily mortgages and consumer credit—and other accounts payable, and measures the total against net household disposable income.1 The BIS uses a wider credit and financial-stability framework, while the IMF studies how household-debt growth can support short-term activity but create medium-term risks when leverage becomes high or borrowers are vulnerable.2 4

This article therefore does not invent a definitive global “top 20” ranking by mixing debt-to-GDP, debt-to-income and commercial estimates. It explains what the major ratios mean, why mortgage structure matters, how interest-rate changes reach households, and which indicators analysts use to distinguish manageable borrowing from a genuine financial-stability risk.

Important data note: Debt figures are not interchangeable. A household-debt-to-income ratio is a household-sector measure. A household-debt-to-GDP ratio uses the whole economy’s output as the denominator. A debt-service ratio measures payments rather than the outstanding balance. Every number needs a source, sector definition, denominator and reference period.

The short answer

The countries that appear at the high end of household-debt comparisons are not necessarily the countries closest to a crisis. High ratios can reflect expensive housing, deep mortgage markets, high household incomes, tax rules, long mortgage maturities or the use of housing as a primary store of wealth. The risk becomes more concerning when high debt is combined with weak income growth, elevated debt-service payments, falling house prices, concentrated variable-rate exposure, loose underwriting, high unemployment or a large share of debt held by financially fragile households.

The OECD’s household-debt indicator measures liabilities as a percentage of net household disposable income.1 The BIS credit-to-the-non-financial-sector data set covers borrowing by government and the private non-financial sector and provides credit-to-GDP and debt-service measures for international analysis.2 The IMF’s financial-stability research finds that increases in household debt can boost growth in the short term but may be associated with weaker growth and greater banking-crisis risk over the medium term, especially when household debt is already high.4

For the United States, the Federal Reserve’s April 2025 Financial Stability Report provides a useful example of why structure matters. It said aggregate household-debt vulnerabilities remained moderate, the household debt-to-GDP ratio was near a 20-year low, debt-service-to-income ratios were slightly below pre-pandemic levels and most household debt had fixed interest rates. The same report noted that nonprime borrowers had more elevated credit-card and auto-loan delinquency rates.5 A country-level average can therefore coexist with stress in specific borrower groups.

Question	Better indicator	Why it matters
How large is the household debt stock?	Debt-to-disposable-income or debt-to-GDP	Measures accumulated liabilities relative to income or output.
Can borrowers service debt?	Debt-service-to-income ratio	Captures interest and principal payments due over a period.
How exposed are borrowers to rate rises?	Fixed versus variable-rate share and reset schedule	Shows how quickly monetary-policy changes pass into payments.
Are loans backed by property?	Mortgage share, loan-to-value and home equity	Indicates collateral and loss-given-default exposure.
Who holds the debt?	Distribution by income, age, credit risk and tenure	Reveals vulnerabilities hidden by an average.
Could debt amplify a downturn?	Credit growth, debt-service burden, arrears and underwriting	Connects household balance sheets to macroeconomic risk.

What is household debt?

Household debt is not the same as a monthly bill and not the same as total household financial obligations. It is a stock: the amount outstanding at a point in time. The OECD definition covers liabilities that require payment of interest or principal at fixed dates in the future.1

The largest component in many advanced economies is mortgage borrowing. Other components include credit-card balances, auto loans, student loans, personal loans and other consumer credit. Some statistical frameworks also include accounts payable or liabilities of non-profit institutions serving households. The exact coverage must be checked before comparing countries.

A debt stock can remain stable while the monthly burden changes. If interest rates rise, a variable-rate borrower may pay more even though the principal has not changed. If income rises faster than debt, a debt-to-income ratio can decline even while the nominal balance grows. If inflation increases nominal wages and nominal GDP, ratios can fall mechanically without households feeling richer in real terms.

Concept	Meaning	Example of the analytical question
Debt stock	Outstanding liabilities at a point in time	How much do households owe?
Debt flow	New borrowing minus repayments during a period	Are households adding debt or paying it down?
Interest expense	Cost of borrowing over a period	How much does the rate environment change payments?
Principal amortisation	Repayment of the borrowed amount	How much cash flow is required to reduce the balance?
Debt service	Interest plus principal payments due	Can household income cover scheduled payments?
Arrears or delinquency	Payments past due	Are borrowers failing to service debt?
Negative equity	Debt exceeds the value of collateral	Could a sale leave the borrower owing money?

The distinction between stock and flow is central. A country can have a large stock of long-term fixed-rate mortgages but a moderate debt-service burden. Another can have a smaller debt stock with short maturities and variable rates that reprice quickly. Analysts should not call the first country safer without checking income distribution, underwriting, equity and the financial system, but neither should they infer imminent distress from the stock ratio alone.

The main debt ratios and their denominators

Household debt-to-disposable-income ratio

The household debt-to-disposable-income ratio compares liabilities with the income available to households after taxes and transfers, under the source’s national-accounts definition. It is intuitive because repayments ultimately come from household income. The OECD publishes household debt as a percentage of net household disposable income.1

The ratio can rise because households borrow more, because disposable income falls, because house prices encourage mortgage borrowing or because credit becomes more available. It can fall because households repay debt, incomes grow, inflation raises nominal income, or statistical revisions change the series. A ratio is not a default probability.

Household debt-to-GDP ratio

The debt-to-GDP ratio compares household liabilities with the value of goods and services produced by the whole economy. It is useful for macroeconomic comparisons and for relating household leverage to the size of the economic base, but GDP is not household cash flow. A household cannot directly use all national output to make mortgage payments.

The BIS credit-to-GDP framework is designed for cross-country credit analysis. The BIS also publishes credit-to-GDP gaps, defined as the difference between the credit-to-GDP ratio and its long-run trend.2 3 The gap is used as an early-warning indicator for excessive credit, but it should not be interpreted as a mechanical crisis trigger. Trends, data revisions, structural breaks and country institutions matter.

Debt-service-to-income ratio

The debt-service-to-income ratio measures the share of income used for interest payments and principal amortisation. It is a cash-flow measure and can be more closely connected to immediate household stress than the debt stock alone. The BIS describes debt-service ratios as measuring the amount of income used for interest payments and amortisations.2

A borrower with a large long-term mortgage at a low fixed rate may have a lower current debt-service burden than a borrower with a smaller loan at a high variable rate. The ratio can rise when rates increase, when income falls or when a loan resets. It can improve when borrowers refinance, repay principal, receive higher income or benefit from a fixed-rate structure.

Loan-to-value and debt-to-income at origination

Loan-to-value (LTV) compares a mortgage balance with the value of the property securing it. A lower LTV generally gives the borrower a larger equity cushion, although property prices can fall and valuations can be uncertain. Debt-to-income at origination compares new borrowing with the borrower’s income and is used in many underwriting and macroprudential frameworks.

These are not the same as the national household-debt ratio. A country can have high aggregate debt because many households have accumulated equity over decades, while new loans are conservatively underwritten. Another can have a moderate aggregate ratio but a rapidly growing segment of highly leveraged new borrowers. The distribution and vintage of loans matter.

Why mortgages dominate household debt

Mortgage debt is usually the largest household liability in economies where homeownership is financed through credit. The Federal Reserve’s April 2025 report said mortgages accounted for roughly three-fourths of total US household debt.5 This US statistic should not be generalized to every country, but it illustrates why household debt is closely linked to housing markets.

Mortgage borrowing can finance a durable asset and provide housing services over time. It can also expose households and banks to house-price cycles, interest-rate resets, unemployment, construction shortages and regional concentration. A mortgage borrower may benefit from house-price appreciation through equity, but cannot spend that equity without selling, refinancing or borrowing against the property.

The macroeconomic effect is asymmetric. When house prices rise and credit expands, households may consume more, construction may increase and banks may report strong collateral. When prices fall, highly leveraged borrowers may cut spending, delay purchases, default or become unable to move. Banks can tighten lending, which may deepen the downturn. The IMF describes this interaction as a potential debt-overhang and deleveraging channel.4

Housing collateral also creates different outcomes across households. An owner with substantial equity can refinance or absorb a temporary income loss. A recent buyer with a small deposit may move into negative equity after a moderate price decline. A renter may avoid mortgage losses but face higher rent or displacement if landlords and housing supply are under pressure.

Interest rates and the speed of transmission

Interest-rate structure is one of the most important differences between household-debt systems. The key question is not simply whether a country has high debt, but how quickly a change in policy rates reaches household payments.

In a predominantly fixed-rate, long-maturity system, existing borrowers may remain protected for years, although new buyers face higher rates and refinancing eventually occurs. In a variable-rate system, payments may change quickly after the central bank moves. In a short-fixed-period system, borrowers may be shielded temporarily and then face a large reset when the fixed term ends.

Mortgage structure	Immediate effect of a rate rise	Main risk
Long fixed rate	Existing payment changes little	Refinancing and new-borrower affordability later.
Variable rate	Payment can rise quickly	Immediate cash-flow stress and arrears.
Short fixed period	Payment is stable until reset	Payment shock concentrated at refinancing.
Interest-only period	Principal does not decline as expected	Higher balance and later repayment burden.
Longer amortisation	Lower scheduled payment	More interest paid and slower equity accumulation.

The Federal Reserve’s 2025 report said most US household debt had fixed interest rates, limiting the pass-through of higher rates to aggregate interest expenses, and that debt-service-to-income ratios were slightly below pre-pandemic levels.5 This is a useful case study in why the same level of debt can create different near-term risks depending on contract design.

Rate structure does not eliminate risk. Fixed-rate borrowers can still lose jobs, face falling house prices or carry high loan balances relative to property values. New buyers may be priced out, construction may weaken and lenders may face credit losses. It simply changes the timing and distribution of the shock.

High household debt can support growth before it creates risks

Household credit can help people buy homes, pay for education, smooth consumption, start businesses or manage temporary income gaps. Financial inclusion and access to safe credit can improve welfare. A country with very little household debt may not be financially safe if households lack access to formal finance or cannot borrow for productive investments.

The IMF’s 2017 Global Financial Stability Report examined household debt across 80 advanced and emerging economies. It found a short-term growth benefit but medium-term risks: after an initial positive response, the relationship between household debt and growth, consumption and employment can turn negative; higher household-debt growth is associated with a greater probability of banking crises, particularly when debt is already high.4

This does not mean that every credit expansion is harmful. It means that the purpose, terms and distribution of borrowing matter. A mortgage that allows a stable-income household to purchase a reasonably priced home is different from high-cost revolving credit used to cover recurring expenses. A student loan supporting education is different from a variable-rate loan secured against an overvalued property. National ratios do not reveal these distinctions without supplementary data.

The IMF also emphasizes the role of institutions and policies. Financial regulation, supervision, consumer protection, exchange-rate regimes, income inequality and external financing can amplify or reduce the consequences of high household debt.4 The same ratio can therefore have different risk implications in countries with different banking systems and bankruptcy rules.

Why the distribution matters more than the average

Aggregate household debt can be concentrated among households that are able to service it, while low-income households can face severe hardship with much smaller balances. The IMF reports that lower-income groups tend to have higher debt-to-income, debt-service-to-income and debt-to-assets ratios within countries.4

Distributional questions include:

• What share of debt is held by low-income households?
• How many borrowers have variable-rate loans?
• What share of mortgages has a high LTV or high debt-to-income ratio?
• Are delinquencies rising among prime, near-prime or subprime borrowers?
• Are households using debt to buy assets or to fund essential consumption?
• How much income is left after debt service, housing, food, energy and transport?
• Are borrowers protected by insurance, savings or public transfers?

The Federal Reserve’s 2025 report illustrates this difference. Aggregate US household-debt vulnerabilities were described as moderate, but credit-card and auto-loan delinquencies were more elevated among nonprime borrowers.5 A stable average therefore does not imply that every household is stable.

Distribution also affects consumption. A dollar of reduced spending by a highly indebted, liquidity-constrained household may have a larger near-term effect on demand than a dollar of reduced saving by a high-income household with significant assets. This is one reason the IMF links household debt, inequality and macroeconomic stability.4

Assets, collateral and net worth

Debt must be analysed with assets, but net worth does not erase cash-flow risk. A country may have high household debt and high housing wealth. If borrowers have fixed-rate mortgages, strong incomes and substantial equity, defaults may remain low. If a recession reduces income while property prices fall, the same debt can become more difficult to service.

The relationship between debt and assets also varies by age. Older homeowners may own valuable properties with little debt, while younger households may have high mortgage balances and limited liquid savings. National averages combine those cohorts. A debt-to-asset ratio can look safe at the aggregate level even when recent buyers are highly leveraged.

Liquidity is another distinction. A property is not the same as a bank deposit. Selling a home takes time, may incur taxes and transaction costs, and can force a household to move. Borrowing against the property depends on lender standards and market value. A household can therefore be asset-rich and cash-poor. Cash held in high-yield savings accounts is far more liquid than property.

Collateral can protect lenders but increase cyclical risk. When prices rise, lenders may accept higher valuations and borrowers may refinance. When prices fall, credit contracts can tighten across the market, even for households that are current on payments. The BIS credit-to-GDP and debt-service frameworks help track aggregate credit conditions, but they should be combined with property-market and household-distribution data.2 3

Household debt and the 2008 financial crisis

The global financial crisis is often reduced to a story about “high household debt,” but the transmission mechanism was more specific. Rapid mortgage-credit expansion interacted with house-price inflation, weak underwriting, complex securitisation, leverage in the financial system, defaults and falling collateral values. The IMF’s research describes how heavily indebted households can reduce consumption, default or enter bankruptcy after an adverse income or property shock, while stressed banks can reduce lending to the rest of the economy.4

The lesson is not that mortgage debt is inherently unsafe. It is that credit growth, borrower quality, loan terms, collateral valuations, bank capital and macroeconomic conditions interact. A country with a high stock of debt may have learned from past crises and tightened underwriting. A country with a lower stock may face a rapidly growing and poorly regulated credit market.

Historical comparisons must also respect timing. A ratio measured before a crisis is not comparable to a ratio after defaults, write-downs and GDP changes. A debt-to-GDP ratio can fall because households repay, because lenders write off debt, because GDP rises, or because prices and exchange rates change. Analysts should identify the mechanism rather than treating the ratio as a score.

Denmark, Switzerland and Australia: why country stories differ

The old “highest household debt” lists often highlight Switzerland, Australia and Denmark. The correct treatment is not to repeat a single percentage without a denominator, date and source, but to explain why each system can look different.

Switzerland’s high household-debt measures are often discussed alongside high household wealth and a large mortgage market. A high ratio can reflect mortgage structure and tax or housing-market features rather than the same type of unsecured distress found in a consumer-credit crisis. The relevant question is how borrowers service debt, what share is variable-rate, how much equity exists and how banks are capitalised.

Australia has a large mortgage market and substantial exposure to residential property. Risk analysis should examine house prices relative to income, mortgage rates, fixed-rate expiries, borrower buffers, arrears and the distribution of debt. A national debt ratio cannot decide whether a specific Australian borrower or bank is safe.

Denmark’s mortgage system is distinctive because of its covered-bond and mortgage-credit structure. A rigorous article should not turn that institutional feature into a claim that high debt is risk-free. Market liquidity, borrower payment capacity, property prices and refinancing conditions still matter. The general lesson is that the architecture of lending changes how risk is transmitted; it does not abolish risk.

Cross-country comparisons should therefore present these countries as case studies in structure, not as a simplistic risk ranking. The source used for the ratio, the sector coverage and the loan contract terms must remain visible.

Consumer debt beyond mortgages

Mortgages dominate many household-balance-sheet comparisons, but non-mortgage credit can create more immediate distress for some households. Credit cards, payday loans, auto loans, student loans and personal loans may have shorter maturities, higher interest rates or less collateral protection. A country with moderate mortgage leverage can still face consumer-credit stress if unsecured balances and delinquency rise.

The Federal Reserve’s 2025 report said US consumer debt accounted for the remaining roughly one-fourth of household debt after mortgages and included student, auto and credit-card loans. It reported that credit-card and auto-loan delinquencies were somewhat above historical medians, driven in part by nonprime borrowers.5 The figures are US-specific, but the analytical pattern is general: debt composition matters.

Unsecured debt can also be used to fund recurring essentials when income fails to cover food, utilities, rent or healthcare. In that situation, a rising balance may indicate financial stress rather than investment in a durable asset. Household surveys and distributional data are needed to distinguish those uses.

How to assess household-debt risk responsibly

A responsible country comparison starts with definitions. Record whether the numerator includes mortgages, consumer credit, accounts payable, student loans or non-profit institutions. Record whether the denominator is net disposable income, GDP, assets or total income. Record the reference quarter or year and the statistical revision status.

Next, add cash-flow measures. Debt-service ratios and arrears can reveal stress before a debt-to-income ratio moves. Examine interest-rate resets, fixed-rate shares and amortisation schedules. Then add balance-sheet measures: loan-to-value, debt-to-assets, home equity, liquid savings and bank capital.

Finally, disaggregate. Compare low-income and high-income households, owners and renters, younger and older borrowers, prime and nonprime borrowers, and regions with different house prices. A conclusion should identify which group drives the risk.

Layer	Questions	Relevant source family
Stock	How much debt is outstanding?	OECD, BIS, IMF datasets
Flow	Is credit expanding or contracting?	BIS credit series and national accounts
Cash flow	How much income goes to payments?	BIS debt-service ratios, national surveys
Collateral	What backs the loans?	House-price, LTV and mortgage data
Distribution	Who has the debt and who is delinquent?	Household finance and credit-panel data
Institutions	What happens after a shock?	Central-bank reports, regulation and bankruptcy data
Macro feedback	Can deleveraging reduce demand or banking capacity?	IMF and BIS financial-stability research

Common mistakes in household-debt rankings

The first mistake is comparing debt-to-income with debt-to-GDP as if they were the same ratio. The second is quoting an old ranking without a reference date. The third is treating mortgage debt and unsecured consumer credit as identical. The fourth is ignoring fixed versus variable interest rates.

The fifth is using a country average to describe every household. The sixth is ignoring household assets and home equity. The seventh is treating high debt as automatically bad even when it finances productive investment and is serviced comfortably. The eighth is treating low debt as automatically safe even when households lack access to formal finance or face high interest costs.

The ninth is confusing debt service with debt stock. The tenth is presenting a household-debt-to-GDP ratio as a forecast of crisis. The BIS credit-to-GDP gap is an early-warning measure, not a deterministic signal.2 3

The eleventh is reporting a precise figure from a secondary ranking without checking the primary database. The twelfth is making a personal recommendation from a macro statistic. A country can have high household debt while a particular household should borrow less, more or not at all; the national ratio cannot decide an individual case.

Frequently asked questions

Which country has the highest household debt?

There is no single defensible answer without specifying the numerator, denominator, sector coverage and reference period. A ranking based on household debt-to-disposable-income will differ from one based on household debt-to-GDP. The OECD, BIS and IMF use different but complementary frameworks.1 2 4

Is high household debt always dangerous?

No. Risk depends on debt-service payments, income stability, interest-rate structure, loan-to-value, underwriting, asset prices, bank capital and the distribution of debt. High debt can support housing and education investment, but rapid debt growth can increase medium-term financial-stability risks.4

What is more important: debt-to-income or debt-to-GDP?

Neither is universally superior. Debt-to-income is closer to household repayment capacity; debt-to-GDP is useful for macroeconomic comparisons. They answer different questions and should not be substituted for one another.1 2

Why can Switzerland or Denmark have high household debt without an immediate crisis?

High ratios can coexist with high household wealth, strong incomes, developed mortgage markets, long maturities and effective regulation. That does not eliminate risk; it changes the channels and timing through which stress could appear. Analysts should examine servicing costs, variable-rate exposure, equity, underwriting and distribution.

What is the debt-service ratio?

The debt-service ratio measures the share of income used for interest payments and principal amortisations. The BIS publishes aggregate debt-service ratios for the total private non-financial sector in 32 countries.2 It is a flow measure, unlike an outstanding debt ratio.

Does a mortgage count as household debt?

Yes. Mortgage loans are a primary component of household debt in the OECD definition and in many national accounts.1 The mortgage’s interest rate, maturity, repayment schedule, collateral and borrower income determine its risk profile.

Can house-price gains make high household debt safe?

House-price gains can increase equity for existing owners, but they do not guarantee cash-flow safety. Prices can fall, selling takes time and a household may be unable to access equity. New buyers with small deposits remain vulnerable to negative equity.

Does household debt affect economic growth?

It can support short-term activity by financing consumption, housing and investment. IMF research finds that the relationship can reverse over the medium term, with higher household-debt growth associated with weaker outcomes and greater crisis risk in some conditions.4

Is government debt the same as household debt?

No. They are different sectors with different income sources, legal structures, monetary powers and repayment mechanisms. The BIS credit data cover government and private non-financial sectors separately and in aggregate, but a household cannot issue currency or levy taxes.2

What should a household do if interest rates rise?

The appropriate response depends on the individual contract, income, savings, refinancing terms and local law. A national ranking cannot provide personal debt advice. Households should review their own documents and obtain qualified advice where necessary.

Conclusion

Household debt rankings are useful only when the metric is explicit. The OECD measures household liabilities against net disposable income. The BIS provides credit-to-GDP, credit-gap and debt-service frameworks. The IMF shows why debt growth can support short-term activity but create medium-term risks, especially when debt is high and concentrated among vulnerable households. The Federal Reserve’s US analysis demonstrates that fixed-rate mortgages, home equity and aggregate debt-service burdens can materially change the interpretation of a high debt stock.1 2 4 5

The correct question is not simply “Which country owes the most?” It is: How much debt is outstanding, who holds it, what payments are due, how quickly can rates reset, what assets secure the borrowing, and what happens if income or property prices fall?

High household debt is a balance-sheet condition. Financial stress is a cash-flow and distributional condition. A reliable analysis keeps those concepts separate and uses dated primary data rather than an undated global league table.

This is research and analysis only, not personalized financial advice.

Related Reading

• Countries With the Highest Homeownership Rates
• Countries With the Highest Cost of Living
• Countries With the Highest Income Inequality
• Countries With the Largest Economies by GDP
• Countries With the Most Billionaires

References