Monetary Policy

Macroeconomic perspectives worth noting on monetary policy, with graphs to illustrate the point, curated from over 100 sources.

AI Summary. US consumer prices rose 3.7% year over year in September, up from 3.4% in August and above economists' 3.6% forecast, with core prices excluding food and energy up 2.6%. Prices rose faster than average hourly earnings, which increased 3%, meaning many Americans' real incomes are falling.

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Inflation accelerated in September, rising to 3.7% annualized from August’s 3.4%. Real average hourly earnings fell .7% year over year.

Is inflation accelerating faster than wages, cutting real incomes?

Core argument: U.S. consumer prices rose 3.7% in September from a year earlier, the Labor Department said, up from August’s 3.4% and above the 3.6% expected by economists surveyed by The Wall Street Journal.

Consumer prices were up 3.7% in September from a year earlier, the Labor Department said Wednesday, hotter than August’s gain of 3.4%. That was above the 3.6% rise expected by economists surveyed by The Wall Street Journal. Core prices excluding food and energy rose 2.6%, above forecasts for a 2.5% increase. Month over month, core prices rose by 0.3%, surprising economists who had expected a 0.2% increase. High prices have been a political flashpoint for Americans, who have grown fed up with five years of inflation. Prices rose much faster in September than average hourly earnings, which increased 3% from a year earlier. That means many Americans are seeing their real incomes fall.

Takeaways by Macro Roundup® AI

  1. U.S. consumer prices rose 3.7% in September from a year earlier, the Labor Department said, up from August’s 3.4% and above the 3.6% expected by economists surveyed by The Wall Street Journal.
  2. Core prices excluding food and energy rose 2.6% year over year in September, above forecasts of 2.5%, and 0.3% month over month against expectations of 0.2%.
  3. September prices rose much faster than average hourly earnings, which increased 3% from a year earlier, meaning many Americans are seeing real incomes fall.

AI Summary. An artificial intelligence investment boom that is insensitive to interest rates is drawing capital, electricity and labor away from rate-sensitive sectors such as housing and autos, which the author argues will force the Federal Reserve to hold rates higher for longer. The durable fix is expanding power, chip and infrastructure supply.

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Sløk warns the rate-insensitive AI buildout has triggered unbalanced growth in the US economy by crowding out capital, electricity, and labor from vulnerable sectors like housing and autos.

Does a rate-insensitive AI boom force the Fed to keep rates higher?

Core argument: The AI boom’s insensitivity to interest rates is draining capital, power and labor from rate-sensitive sectors such as housing and autos, producing a “Dutch disease” dynamic in the US economy.

AI's rate-insensitive boom is draining capital, power and labor from vulnerable sectors like housing and autos. Trapped between inflation driven by the AI boom and weakness in rate-sensitive industries, the Fed will have to keep interest rates higher for longer. Because monetary policy cannot resolve this sectoral imbalance, the only durable fix is expanding the supply of power, chips and infrastructure.

Takeaways by Macro Roundup® AI

  1. The AI boom’s insensitivity to interest rates is draining capital, power and labor from rate-sensitive sectors such as housing and autos, producing a “Dutch disease” dynamic in the US economy.
  2. Caught between AI-driven inflation and weakness in rate-sensitive industries, the Federal Reserve will have to hold interest rates higher for longer.
  3. Monetary policy cannot resolve the imbalance between AI and rate-sensitive sectors, leaving expansion of the supply of power, chips and infrastructure as the only durable fix.

AI Summary. The gap between French and German 10-year government bond yields exceeded 140 basis points, up from 40–50 basis points, which the author attributes to political choices favoring pensioners over bondholders, including a suspended pension reform leaving the minimum retirement age near 62. French over-65s hold higher average incomes than working-age people.

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France has signaled that pensioners are the senior claimants on government revenues. In 2026, private investors must absorb net bond issuance equal to 7.5% of GDP, after years when ECB purchases exceeded issuance.

Why has France's borrowing cost gap with Germany widened?

Core argument: The French OAT-Bund 10-year spread exceeded 140 basis points in mid-2025, up from 40–50 basis points between 2022 and June 2024, which Lustig attributes to political decisions prioritizing pensioners over bondholders.

France’s 10-year spread over Germany has risen above 140bp, from 40–50bp before mid-2024. France has repeatedly signaled that pensioners are senior claimants on government revenues: pension reforms have been weakened or reversed, while governments trying to restrain pension spending have fallen. The minimum retirement age is now 62 years and 9 months, and French over-65s have higher average incomes than the working-age population. Meanwhile, ECB purchases exceeded French net bond issuance in five years from 2015–22, so private investors were net sellers of French bonds; in 2026 they must absorb net issuance equal to 7.5% of GDP. The 10-year (r-g) gap has swung from −3.9pp in October 2020 to +1.9pp. French insurers and pension funds’ share of negotiable government debt has fallen from about 25% in 2014 to under 11%, while nonresidents’ share has risen to 57.5%.

Takeaways by Macro Roundup® AI

  1. The French OAT-Bund 10-year spread exceeded 140 basis points in mid-2025, up from 40–50 basis points between 2022 and June 2024, which Lustig attributes to political decisions prioritizing pensioners over bondholders.
  2. France’s legal minimum retirement age remains frozen at 62 years and 9 months for men — the lowest in the Eurozone except Bulgaria — after Prime Minister Lecornu suspended the 2023 pension reform, and French over-65s hold higher average incomes than the working-age population.
  3. French insurers and pension funds’ share of France’s negotiable state debt fell from about 25% in 2014 to under 11%, non-residents hold 57.5% of OATs, and private investors are projected to absorb 7.5% of GDP in net issuance in 2026.

AI Summary. French government borrowing costs now exceed the country's nominal income growth by about 2 percentage points, the most unfavorable gap between borrowing costs and growth in the rich world. By contrast, Spanish and Greek bond yields remain about 2 percentage points below their income growth rates.

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The change in a country’s interest rate, Klein argues, should be measured against the change in nominal income growth. By that metric, France has moved from “core Europe” into the periphery – while Italy, Spain and especially Greece have moved in the opposite direction.

Do French borrowing costs now exceed its income growth?

Core argument: France’s borrowing costs exceeded its nominal income growth rate by about 2pp as of 2026Q2, and by roughly 3pp at current yields, the most unfavorable such spread in the rich world.

The problem for France is that its bond yields are surging even as its nominal income growth has slowed relative to the 2017-2019 pace, to the point that, almost uniquely among rich countries, borrowing costs there now substantially exceed growth rates. In fact, the spread between French sovereign borrowing costs and French growth rates is now the most unfavorable anywhere in the rich world. The French economy was not quite growing by 2% a year in euro terms as of 2026Q2, which was even worse than the anemic 3% yearly average nominal growth rate recorded in 2017Q1-2019Q4. As of 2026Q2, France’s cost of borrowing was therefore about 2pp higher than its income growth rate. (At current yields, the penalty is more like 3pp.) By contrast, Spanish and Greek bond yields are still about 2pp lower than their income growth rates.

Takeaways by Macro Roundup® AI

  1. France’s borrowing costs exceeded its nominal income growth rate by about 2pp as of 2026Q2, and by roughly 3pp at current yields, the most unfavorable such spread in the rich world.
  2. French nominal growth was running just under 2% a year in euro terms as of 2026Q2, below the 3% yearly average recorded in 2017Q1–2019Q4, even as French bond yields surged.
  3. Spanish and Greek bond yields remain about 2pp below their nominal income growth rates, in contrast to France’s unfavorable gap.

AI Summary. Second-quarter real GDP growth was revised up 0.7 percentage points to +2.2% at an annual rate, reflecting upward revisions to consumption (to +3.8%) and investment (to +4.6%). Private fixed investment was revised up to +9.0%, driven by data center spending in nonresidential structures.

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GS forecasts that the FOMC will not hike in October, will do one 25bp hike in December and “ultimately conclude that additional rate hikes are unnecessary.”

What drove the upward revision to second-quarter GDP growth?

Core argument: U.S. real GDP growth in Q2 was revised up 0.7pp to +2.2% quarter-over-quarter annualized, led by upward revisions to consumption (+0.4pp to +3.8%) and investment (+1.9pp to +4.6%).

Real GDP was revised up by 0.7pp to +2.2% in Q2 (quarter-over-quarter annualized), largely reflecting upward revisions to consumption (+0.4pp to +3.8%) and investment (+1.9pp to +4.6%) growth. The strength in consumer spending in Q2 likely continued to reflect the boost to consumer cashflow from larger-than-usual tax refunds, but we continue to expect consumer spending growth to slow somewhat in 2026Q4 as the fiscal support fades and the headwind from higher energy prices remains. Stronger investment growth reflected an upward revision to private fixed investment (+0.5pp to +9.0%), driven by data center investment in the nonresidential structures category (+1.9pp to +0.1%), and an upward revision to the contribution from inventories (+0.2pp to -0.5pp).

Takeaways by Macro Roundup® AI

  1. U.S. real GDP growth in Q2 was revised up 0.7pp to +2.2% quarter-over-quarter annualized, led by upward revisions to consumption (+0.4pp to +3.8%) and investment (+1.9pp to +4.6%).
  2. Private fixed investment growth in Q2 was revised up 0.5pp to +9.0%, driven by data center investment in nonresidential structures, revised up 1.9pp to +0.1%, alongside a +0.2pp revision to the inventory contribution, to -0.5pp.
  3. Q2 consumer spending strength likely reflected the cashflow boost from larger-than-usual tax refunds, with spending growth expected to slow somewhat in 2026Q4 as fiscal support fades and higher energy prices remain a headwind.

AI Summary. Demand and supply curves estimated from pre-pandemic data imply relatively flat demand curves in the US and euro area, so adverse supply shifts would produce large output losses but comparatively little inflation. The authors argue explaining the observed combination of high inflation and output requires outward demand shifts, including accommodative monetary policy alongside fiscal expansion.

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Giannone and Primiceri revisit the relative role of supply vs. demand shocks in generating the post-Covid inflation. Because aggregate demand curves estimated from pre-pandemic data are flat, supply shocks alone would not have generated large inflation in the absence of added demand stimulus.

Did outward demand shifts, not supply shocks alone, drive recent inflation?

Core argument: Demand curves estimated from pre-pandemic US and euro-area data are relatively flat, reflecting central banks’ strong pre-pandemic responses to inflation, so adverse supply shifts produce large output losses but comparatively little inflation.

Demand and supply curve slopes are estimated from pre-pandemic data using the essentially definitional restriction that supply shocks move prices and output in opposite directions along demand curves, while demand shocks move them together along supply curves; the plotted slopes represent Bayesian posterior medians rather than uniquely identified estimates. The estimated demand curves are relatively flat in both the US and euro area [Figure 7], reflecting the central banks’ strong pre-pandemic responses to inflation. With those slopes, adverse supply shifts cause large output losses but comparatively little inflation. [To successfully explain] the combination of inflation and output observed in 2022 therefore requires demand to shift outwards too. Strong demand, including unusually accommodative monetary policy [on top of strong fiscal expansion], cushioned the output losses while increasing inflation [Figure 7]. In 2021–22, both inflation and GDP as subsequently revised exceeded forecasts in the US and euro area. That combination is suggestive of unexpectedly strong demand, whereas an adverse supply surprise alone would raise inflation but lower output. [Figure 9].

Takeaways by Macro Roundup® AI

  1. Demand curves estimated from pre-pandemic US and euro-area data are relatively flat, reflecting central banks’ strong pre-pandemic responses to inflation, so adverse supply shifts produce large output losses but comparatively little inflation.
  2. Explaining the 2022 combination of inflation and output requires an outward shift in demand, with strong demand — including unusually accommodative monetary policy atop fiscal expansion — cushioning output losses while raising inflation.
  3. In 2021–22, both inflation and GDP as subsequently revised exceeded forecasts in the US and euro area, a combination suggestive of unexpectedly strong demand, since an adverse supply surprise alone would raise inflation but lower output.

AI Summary. The Institute of International Finance reports global debt as a share of output rose less than 10 percentage points between 2018 and mid-2026, peaking at 337% in early 2021 before falling 27 percentage points by the end of 2023. Inflation eroded the debt burden, as it did in the UK after the Second World War.

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Wolf notes that the global debt-to-GDP ratio rose by less than 10pp btw 2018 and June 2026: after peaking at 337% in early 2021, it fell by 27pp by the end of 2023, as inflation boosted nominal GDP and eroded the value of existing debt.

Does inflation reduce the global debt burden?

Core argument: IIF data show the global debt-to-output ratio reached a post-Covid peak of 337% in early 2021 before falling by 27 percentage points by the end of 2023, with inflation identified as the force that eroded it.

The IIF shows that between 2018 and June 2026, the rise in the ratio of global debt to output was less than 10 percentage points. The story is striking: the ratio reached a post-Covid peak of 337% in early 2021, before falling by 27 percentage points by the end of 2023. What was this magical “debt-buster”? Good old-fashioned (and supposedly “unexpected”) inflation. This is — to put it mildly — not the first time inflation has wiped out debt. It was, to take one of countless examples, an important part of the UK’s elimination of its post-second-world-war debt. For countries able to print the money in which their debt is denominated, that is often what happens.

Takeaways by Macro Roundup® AI

  1. IIF data show the global debt-to-output ratio reached a post-Covid peak of 337% in early 2021 before falling by 27 percentage points by the end of 2023, with inflation identified as the force that eroded it.
  2. Between 2018 and June 2026, the IIF shows the ratio of global debt to output rose by less than 10 percentage points.
  3. Inflation has wiped out debt before, forming an important part of the UK’s elimination of its post-second-world-war debt, and often does so for countries able to print the currency in which their debt is denominated.

AI Summary. Because investors can buy bonds across borders, an investment boom in one country such as the United States can draw in loanable funds from abroad and push up interest rates in other nations. The linkage is not one-for-one, since investors also weigh expected exchange-rate changes and the resulting capital gains or losses.

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The nominal 10-year Treasury yield is ~ where it was during the mid-2000s housing boom, but below its level during the late-1990s and early-2000s technology boom. Krugman asks, “If we’re now looking at an even bigger investment boom, why wouldn’t we expect to see interest rates at least that high?”

Does an investment boom in one country raise interest rates abroad?

Core argument: Because investors can buy bonds across borders, an investment boom in the United States draws loanable funds from other nations and pushes their interest rates up as well.

Investors can buy bonds across borders, so an investment boom in the United States can draw in loanable funds from other nations and drive up their interest rates. The international linkage between interest rates isn’t always one-for-one. That’s mainly because investors deciding which nation’s bonds to buy don’t just look at interest rates -- they also take into account expected changes in exchange rates. For example, there was a sharp rise in U.S. interest rates in the early 1980s that was only partially matched by a rise in German rates. The reason was that this was also a period of an extremely strong dollar, which many investors believed (correctly) would prove temporary. So German investors buying U.S. bonds had to set the high interest rates they could earn against the capital losses they were likely to experience when the dollar came back to earth.

Takeaways by Macro Roundup® AI

  1. Because investors can buy bonds across borders, an investment boom in the United States draws loanable funds from other nations and pushes their interest rates up as well.
  2. The international linkage between interest rates is not always one-for-one, mainly because investors choosing among nations’ bonds weigh expected exchange rate changes alongside interest rates.
  3. The sharp rise in U.S. interest rates in the early 1980s was only partially matched by German rates, as German investors buying U.S. bonds set high yields against likely capital losses when the strong dollar fell back.