Debt is one part of the story. Start with three important distinctions.
01What is government debt?
The accumulated debt liabilities of general government. This is broader than central government and usually includes regional and local authorities and social security funds. Coverage and valuation can differ by country. Gross debt does not subtract government financial assets.
02Why compare debt with GDP?
Debt divided by annual GDP expresses the scale of liabilities relative to an economy. A ratio of 100% means debt equals one year of GDP, not that all debt falls due in one year. The ratio alone does not determine default risk: interest rates, maturities, currency and fiscal revenue also matter.
03How are dollar amounts calculated?
Dollar debt is an approximation: debt-to-GDP ratio × nominal GDP in US dollars / 100. It can differ from official debt converted at year-end exchange rates. Per-person debt divides this estimate by population; it is a statistical ratio, not a personal liability.