🇬🇧 United Kingdom vs 🇯🇵 Japan

Analysis

By total government debt, United Kingdom ranks 4th-largest and Japan ranks 3rd-largest among the 137 sovereigns tracked on this site.

On a per-citizen basis the picture can look different from the nominal totals: a resident's notional share of the national debt in Japan is roughly 1.1× that in United Kingdom ($72,710 vs $63,640 per person).

Both countries carry debt-to-GDP ratios above the 100% mark that analysts often treat as an informal threshold for closer scrutiny — United Kingdom at 102% and Japan at 207% — meaning each owes more than a full year's worth of national output.

The gap between them is narrowing: United Kingdom's debt is growing faster in dollar terms ($10K/sec vs $-6676/sec for Japan), closing the difference by roughly $1,455,926,400 per day. At that pace — and holding both growth rates constant, a simplification, since real-world rates shift with fiscal policy — the two would reach a similar total in a rough 9 years.

Scale is part of the story too: Japan's population (124M) is about 1.8× United Kingdom's (68M), which is part of why the nominal and per-capita comparisons above can point in different directions — a government's debt load scales loosely with the size of both its economy and its population, not either alone.

This analysis is generated automatically from live data as an educational orientation, not financial advice — see the methodology page for definitions and caveats.