Countries with the Biggest Debt to GDP Ratio

1. Japan - 238%

2. Greece - 182%

3. Barbados - 157%

3. Lebanon - 147%

4. Italy - 132%

5. Eritrea - 131%

6. Republic of Congo - 131%

7. Cabo Verde - 126%

8. Portugal - 126%

9. Sudan - 122%

10. Singapore - 111%

The first and most obvious insight that our visualization reveals is how developed countries have the biggest debt problems. Japan immediately stands out as the single most prolific spender with a debt-to-GDP ratio of 238%. That means the entire Japanese economy, the third largest in the entire world, doesn’t produce nearly enough value in 2 years to pay off its entire debt. Greece is not far behind at 182%, followed by Barbados (157%) and Lebanon (147%). The U.S. has the 13th worst ratio in the world at 105%.

Immediately outside this inner ring of heavy spenders are several small or developing countries with enormous financial challenges. Egypt (103%), Cyprus (97%), Mongolia (84%), Brazil (83%) and Yemen (74%), to name only a few, clearly have debt problems that could spark financial problems for the rest of the world.
And then there are a host of green countries along the outside of our visual worth mentioning, especially China (47%), which has the second biggest economy in the world but a remarkably healthy national balance sheet. Granted, the country is still undergoing substantial urbanization and modernization, but the fact that it has such a low debt-to-GDP ratio suggests that it can spend buckets of additional money solving its challenges. Also take a look at Russia at only 16%. The Russian economy is plagued by slow growth, but at least it won’t have a debt crisis anytime soon.

Source: https://howmuch.net/articles/state-of-the-worlds-government-debt