In the euro area, the debt-to-GDP ratio is expected to jump to 97.4% in 2020 from below 85% in 2019, according to the International Monetary Fund.
New Zealand announced on Thursday that its public debt will more than double over the next three years as it unveiled a massive investment plan to mitigate the economic impact of the COVID-19 pandemic.
The island nation will invest 50 billion New Zealand dollars (€27.7 billion) over the next four years to boost the economy. As a result, public debt is expected to shoot up from 20% of Gross Domestic Product (GDP) to 54% in 2023.
But New Zealand is far from the only country to expect its public debt to take a hit from the pandemic.
The International Monetary Fund (IMF) predicted last month that "fiscal balances in 2020 are expected to deteriorate in almost all countries, with sizeable estimated expansions in the United States, China, and several European and other Asian economies."
The euro area is thus expected to see its gross public debt relative to GDP rise from 84.1% in 2019 to 97.4% this year.
What's public debt?
The health of an economy is measured, primarily, through its GDP which represents the total value of what the country produced in goods and services during a specific period of time. It includes all private and public consumption, government spending, investments, construction world and the foreign balance of trade — whether the country has exported more than it has imported.
The debt-to-GDP ratio, therefore, calculates what a county owes compared to what it produces and indicates a country's ability to repay its debt.
Usually, the higher the debt-to-GDP ratio, the higher the interest rates on government bonds — the instrument countries use to raise money — will be.
Why it's rising?
Countries around the world took drastic measures to contain the spread of the deadly COVID-19 pandemic. Lockdowns were introduced on every continent, limited people's ability to move and meet, grinding entire sectors to a halt and putting healthcare systems under intense pressure.
Governments the world over have had to unveil massive investment plans to keep businesses from going under and workers for losing their jobs.
According to the Bruegel thinktank, the German federal government announced support measures worth more than €1,400 billion, while France, Italy, the UK and the US respectively put forward €620 billion, €781 billion, €520 billion and €3,000 billion.
How much will it rise in the EU?
Here is what the IMF forecast in its Fiscal Monitor released last month.
Greece and Italy will remain the most indebted countries with Athens's debt-to-GDP ratio expected to rise from 179.2% to 200.8%.
Belgium, Cyprus, France, Portugal, and Spain are meanwhile forecast to cross the 100% threshold.
What does it actually mean?
"In the short run this means very little," Antonio Fatas, professor of economics at the INSEAD business school, explained to Euronews.
"We will see government debts increase but at current interest rates this will impose a minimal cost on public finances," he continued.
But, he stressed, there are still risks, including "that some governments are perceived as insolvent and we have a sovereign debt crisis or that politically the increase in debt triggers a demand for austerity (this would be bad news for the European economy)."
The good news is that European economies are now better equipped to deal with these headwinds, due to the 2008-2012 financial crisis. Low-interest rates have become the norm and should remain there for "a long time" while the European Central Bank "is better prepared (economically and politically) to keep markets calm", Fatas said.
For him, the rise in public debt will therefore not have any effect on growth in the medium term.
Furthermore, as the increase in debt is the result of fiscal policies designed to boost the economy, it should result in "more jobs, higher income and increasing consumption".
"The debt itself does not have a direct impact on the consumer," he highlighted.