Yields on Germany's 10-year government bonds are at their highest level since 2011.
Germany spent years as the low-debt exception among large European borrowers. Ken Rogoff said the reason its lenders now want more is not a weak economy or an inflation problem but a decision about what the government has to buy.
"In the particular case of Germany, they were not a high-debt country, and suddenly they're really nervous about Russia."
Rogoff is the Thomas D. Cabot Professor of Public Policy and Professor of Economics at Harvard, and was chief economist of the International Monetary Fund from 2001 to 2003.
I listened to the full segment so you can skip it.
Here are the 2 takeaways that matter.
👤 Guest: Ken Rogoff, Thomas D. Cabot Professor of Public Policy and Professor of Economics at Harvard, and chief economist of the International Monetary Fund from 2001 to 2003
🎙️ Host: Kai Ryssdal, host and senior editor of Marketplace
👥 Also on: Justin Ho, a Marketplace reporter covering small business, banking and supply chains, who filed the report
📰 Published: 1 September 2026 on marketplace.org (Marketplace)
🟢 Spotify | 🔗 Show notes | ⏱️ 26 min
Key Takeaways
Germany's 10-year bond yields are at their highest since 2011, and the cause is defense spending Rogoff said the country was not a heavy borrower until it decided it had to spend against the threat from Russia
A government with a strong balance sheet no longer gets a cheap loan for that reason alone
Japan's 10-year yields are at their highest since the late 1990s, so this is not one country's problem
Kai Ryssdal's case is that a story listeners have stopped hearing is about to reach American borrowers Rates rising in bond markets abroad pull US rates up with them
1. Bond news has become noise
Kai Ryssdal opened the program with a coin toss between the day's two economic stories — "All right, let's toss a coin, labor market or the bond market. Heads I win, tails you lose." — and then argued that one of them has been covered so relentlessly that listeners no longer hear it.
Ryssdal said he believes a business story can be reported so constantly that people stop registering it, and he named the tariff coverage of both Trump administrations as the precedent "There is a thing that happens with the news."
He put the bond-market reporting of the past two weeks in the same category, and said the subject makes it easy to tune out: "I'm a little worried, though, that all the bond market news the past couple of weeks is starting to fall into that category, which I get to some degree, because even on the best of days, bond market stories are dense."
What makes this stretch different, in his account, is the scale of the move rather than anything new in the argument "But when globally, bond markets are kind of screaming at you, attention must be paid." He named who he thinks the story reaches: "Attention specifically from us, the American consumer."
Ryssdal said bond buyers around the world have been demanding higher interest rates, and that rates rising globally will rise in the United States as well "Bond buyers around the world have been demanding higher interest rates for reasons we have been talking about for a couple of weeks now."
2. Germany borrows to rearm
Justin Ho's report begins outside the United States, on the premise that the pressure on American interest rates is coming from other governments' bond markets. His first example is Germany.
Ho opened on the German market — "Let's start with Germany as an example." — and put the level at a 15-year high: "Right now, yields on its 10-year government bonds are at their highest since 2011."
Rogoff's explanation is fiscal rather than monetary: German lenders are responding to what the government has decided to buy, not to the central bank "Ken Rogoff, an economics professor at Harvard, says a lot of that is down to government spending."
What makes the move notable, in Rogoff's account, is the starting point: "In the particular case of Germany, they were not a high-debt country, and suddenly they're really nervous about Russia."
He gave the chain from a defense budget to a bond yield in three steps: "They're having to increase military spending. More spending means more debt. And because of that, the bond market is demanding higher interest."
Bonus Insights
Germany is not the only government paying a multi-decade high. "And not just from Germany, 10-year bond yields in Japan are at their highest level since the late 90s." — Justin Ho Japanese 10-year yields have not been at this level since the late 1990s, which puts the repricing beyond anything a German defense budget explains
Rogoff's bottom line is that Germany's borrowing costs are rising because a government that used to borrow little has decided it has to spend on defense, and its lenders are charging it for the extra debt.
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