“…a must-read for serious students of economic policy.” - Glenn Hubbard, Dean, Columbia Business School, and former Chairman of the Council of Economic Advisers
“Unintended Consequences is full of substance, it is one of the must-read books of the year, and once I finish it I will be giving it a second read through right away.” - Tyler Cowen, Professor, George Mason University
“Unintended Consequences is far smarter and more thought-provoking than most economics written for the general public” - Greg Mankiw, Harvard University, Former Chairman of the Council of Economic Advisors
“Unintended Consequences provides a provocative interpretation of the causes of the global financial crisis and the policies needed to return to rapid growth. Whether you agree or not, this analysis is well worth reading.” - Nouriel Roubini, New York University; Chairman, Roubini Global Economics
“There are an amazing number of good ideas and interesting points made in Unintended Consequences. The thinking underlying it, and the obvious depth of understanding of the author, are very impressive.” - Steven Levitt, coauthor of Freakonomics; 2004 John Bates Clark Medal
“…reminds us that inequality sends a signal of what society lacks most, in America’s case, entrepreneurship and risk taking.” - Lawrence Lindsey, CEO, The Lindsey Group, former Director of the National Economic Council
“…a comprehensive explanation of the modern economy.” - Julian Robertson, Founder, Tiger Management
“A full-throated defense of economic dynamism.” - The Wall Street Journal
“…a must-read for serious students of economic policy.” - Glenn Hubbard, Dean, Columbia Business School, and former Chairman of the Council of Economic Advisers
“Unintended Consequences represents the most cogent and persuasive analysis of the Financial Crisis to date.” - Andrei Shleifer, 1999 John Bates Clark Medal Winner
“Unintended Consequences should be read by anyone who takes for granted the superiority of progressive taxation and has not thought carefully about the trade-offs involved.” - The New Republic
“…reminds us that inequality sends a signal of what society lacks most, in America’s case, entrepreneurship and risk taking.” - Lawrence Lindsey, CEO, The Lindsey Group, former Director of the National Economic Council
AI Summary.The Congressional Budget Office projects that if interest rates rose to 1 percentage point above its baseline, federal debt held by the public would reach 222% of GDP by 2056, 47 percentage points above baseline, with primary deficits averaging 2.3% of GDP and annual growth 0.1 percentage point slower.
CBO StaffCongressional Budget OffIce
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If interest rates rise 1pp above CBO’s current extended baseline (a mean rate of 4% over 2026–2056), CBO projects federal debt held by the public will be 222% of GDP in 2056, versus 175% under the current baseline.
How much would higher interest rates raise projected federal debt?
Core argument: CBO projects that under a scenario in which interest rates rise to 1 percentage point above its extended baseline, debt held by the public would reach 222% of GDP in fiscal year 2056, 47 percentage points above the extended baseline.
Under a scenario in which interest rates increased until they were 1 percentage point higher than in CBO’s extended baseline, primary deficits—that is, deficits excluding net outlays for interest—would average 2.3% of GDP over the 2026–2056 period, 0.2 percentage points larger than in the extended baseline. Debt held by the public would grow to 222 percent of GDP in fiscal year 2056, 47 percentage points larger than in the extended baseline. Average annual GDP growth over the 2026–2056 period would be 0.1 percentage point slower than in CBO’s extended baseline, and the average interest rate on federal debt would be 0.7 percentage points higher.
Takeaways by Macro Roundup® AI
CBO projects that under a scenario in which interest rates rise to 1 percentage point above its extended baseline, debt held by the public would reach 222% of GDP in fiscal year 2056, 47 percentage points above the extended baseline.
Primary deficits, which exclude net outlays for interest, would average 2.3% of GDP over 2026–2056 in CBO’s higher-interest-rate scenario, 0.2 percentage points larger than in its extended baseline.
Under CBO’s higher-interest-rate scenario, average annual GDP growth over 2026–2056 would be 0.1 percentage point slower and the average interest rate on federal debt 0.7 percentage points higher than in its extended baseline.
Related Articles:
The Budget and Economic Outlook: 2026 to 2036— The Congressional Budget Office projects the federal deficit will grow from $1.9tn (5.8% of GDP) to $3.1tn (6.7%) over a decade, above the 3.8% averaged over the past 50 years, with rising net interest costs driving much of the increase. Federal debt held by the public is projected to rise from 101% to 120% of GDP.
How Might Fiscal Policy Respond to the Rise of Artificial Intelligence?— The Congressional Budget Office estimates that a permanent 0.5 percentage point increase in annual productivity growth would lower publicly held federal debt after 30 years by 39% of GDP, offsetting roughly half the projected rise from 101% of GDP to 175%. Higher revenue and slower spending growth outweigh higher interest costs.
Soaring Bond Yields, Gaping Deficits and Towering Debts: What Could Go Wrong?— An analysis of 22 rich countries estimates that if each refinanced its entire debt at current five-year bond yields, Britain would need the largest primary surplus to stabilize its debt-to-GDP ratio, about 1.5%, followed by Italy at 1.4%, France at 1.2% and America at 1%.
AI Summary.Estimated sustainable government net debt limits across 25 OECD countries average 234% of GDP under historical interest-rate and growth assumptions (221% for the US) and 214% under current rates (186% for the US). If interest rates rise systematically with debt, the model yields no solution for the US, UK, France, Italy, Greece, and Japan.
Mark WarshawskyAmerican Enterprise Institute
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Warshawsky calculates the US has a sustainable net debt limit, “the lowest level of debt at which a country can no longer service its sovereign debt and must effectively default,” of 186% of GDP, which he forecasts will be reached in ~15 years under current policy and economic conditions.
How high can government debt rise before it becomes unsustainable?
Core argument: Sustainable net debt limits across the US and 24 other OECD countries average 234% of GDP under historical interest rate–growth differentials and 221% for the US, falling to 214% on average and 186% for the US under current, higher interest rates and growth.
Using historical, current, and dynamic interest rate-to-economic growth differentials, countries’ sustainable debt limits are calculated on a net of central bank holdings of government debt basis. Sustainable net debt limits average 234% of GDP for these countries assuming historical rates and economic growth (221% for the US), 214% assuming (higher) current interest rates and economic growth (186% for the US). If, however, interest rates were to rise systematically with debt according to conservative assumptions, there is no model solution for France, Greece, Japan, Italy, the UK, and the US, given their current high debt levels; the average sustainable limit is 178% for the other countries. A reasonable conclusion to draw for the US is that the fiscal path under current policy and trends with rising interest rates is not sustainable in the short to intermediate term. A major fiscal consolidation package will be needed soon, as interest rates rise, unless significantly higher inflation or capital controls will result.
Takeaways by Macro Roundup® AI
Sustainable net debt limits across the US and 24 other OECD countries average 234% of GDP under historical interest rate–growth differentials and 221% for the US, falling to 214% on average and 186% for the US under current, higher interest rates and growth.
If interest rates rise systematically with debt under conservative assumptions, the model yields no solution for France, Greece, Japan, Italy, the UK, and the US given their current high debt levels, while the average limit for the remaining countries is 178%.
A reasonable conclusion is that the US fiscal path under current policy and trends with rising interest rates is not sustainable in the short to intermediate term, and a major fiscal consolidation package will be needed soon unless significantly higher inflation or capital controls result.
Related Articles:
Soaring Bond Yields, Gaping Deficits and Towering Debts: What Could Go Wrong?— An analysis of 22 rich countries estimates that if each refinanced its entire debt at current five-year bond yields, Britain would need the largest primary surplus to stabilize its debt-to-GDP ratio, about 1.5%, followed by Italy at 1.4%, France at 1.2% and America at 1%.
How Might Fiscal Policy Respond to the Rise of Artificial Intelligence?— The Congressional Budget Office estimates that a permanent 0.5 percentage point increase in annual productivity growth would lower publicly held federal debt after 30 years by 39% of GDP, offsetting roughly half the projected rise from 101% of GDP to 175%. Higher revenue and slower spending growth outweigh higher interest costs.
Can AI Avert the Impending Federal Budget Crisis?— U.S. GDP per capita, about $87,000, is projected to reach $102,000 by 2035 with 1.8% annual productivity growth, or $110,000 with 2.7% growth. Because the healthcare sector has been slow to adopt AI, health spending is projected to rise from 18.3% of GDP to 21% under slower growth and 21.7% under faster growth.
AI Summary.A U.S. Treasury buyback of long-dated off-the-run bonds produced only a small decline in long-term yields that was subsequently reversed, leaving the upward trend in yields intact. The dollar fell steeply against both developed-market and emerging-market currencies while gold and other precious metals rose, suggesting markets are positioned for further dollar debasement.
Robin BrooksRobin Brooks Substack
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As Treasury intervened to lower long bond yields yesterday, the dollar fell against G10 and EM currencies. Brooks fears Treasury’s move is the “clearest sign yet that the US is following Japan on its path towards currency debasement.”
Do bond buybacks lower long-term yields or weaken the dollar?
Core argument: The Treasury's buyback of long-dated off-the-run bonds produced only a small decline in yields that was subsequently completely reversed, leaving the upward trend in long-term yields in place, in the author's assessment.
The key question is whether the Treasury got a good bang for the buck yesterday [from its intervention in the market for long-dated off-the-run bonds]. I’m not sure it did. This thing fell but the drop isn’t going to impress anyone. [It was subsequently completely reversed]. The upward trend in long-term yields is clearly still in place. The dollar absolutely cratered against the G10 (blue line) and EM (black line). Furthermore, gold jumped yesterday, as did other precious metals. Markets are primed for dollar debasement to resume and - as Japan shows - it can be next to impossible to stabilize a currency once it enters a devaluation spiral. The US is playing with fire with this buyback.
Takeaways by Macro Roundup® AI
The Treasury's buyback of long-dated off-the-run bonds produced only a small decline in yields that was subsequently completely reversed, leaving the upward trend in long-term yields in place, in the author's assessment.
The dollar fell sharply against both G10 and emerging-market currencies following the Treasury's intervention, while gold and other precious metals jumped.
The author argues markets are primed for dollar debasement to resume and that, as Japan shows, stabilizing a currency once it enters a devaluation spiral is next to impossible.
Related Articles:
Peak Dollar Strength— Net positioning across major currencies shows markets are broadly long the US dollar. The author argues this bullishness is misplaced because the Federal Reserve is less hawkish than markets assume and falling oil prices should pull inflation down, leaving the dollar at peak strength.
The Dollar’s Hidden Dependence on the AI Trade— Net foreign inflows into US equities have reached a record high, driven in large part by overseas investors seeking artificial intelligence exposure unavailable in their home markets. Because most foreign equity investors leave currency risk unhedged, a pullback in these inflows if AI disappoints poses a significant downside risk to the US dollar.
The Real Message In The Yen Intervention— A US-backed intervention to support the yen was funded largely by selling euros rather than dollars, limiting the volume of dollar sales required. The author argues this signals that Washington, fearing the consequences for US financial markets, is reluctant to see foreign central banks deploy their dollar reserves in unlimited quantities.
AI Summary.US Treasuries erased nearly all gains that followed the Treasury Department's surprise decision to increase buybacks of longer-dated bonds, with the 30-year yield rising above 5.27% and the 10-year touching 4.71%. The reversal signals the move has done little to ease concern about surging government debt.
Michael MacKenzie and Alice GledhillBloomberg
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The 30-year yield rose ~7bps to as much as 5.27%, and the 10-year yield hit 4.71%, erasing “almost all” the gains that followed Treasury’s surprise decision to increase buybacks of longer-dated bonds.
Do bigger bond buybacks ease concerns about surging government debt?
Core argument: The US 30-year Treasury yield rose more than seven basis points to as much as 5.27%, returning to where it stood just ahead of the Treasury Department's buyback announcement, before paring the gain.
US Treasuries erased almost all of the gains that followed the Trump administration’s surprise decision to increase buybacks of longer-dated bonds, signaling the move has done little to alleviate the angst about the surging government debt that has pushed some yields to the highest in close to two decades. The 30-year yield on Thursday rose over seven basis points to as much as 5.27%, where it was just ahead of the US Treasury Department’s announcement early Wednesday, before paring the gain. The 10-year yield touched 4.71%, just shy of its highest level since early 2025.
Takeaways by Macro Roundup® AI
The US 30-year Treasury yield rose more than seven basis points to as much as 5.27%, returning to where it stood just ahead of the Treasury Department's buyback announcement, before paring the gain.
US Treasuries erased almost all of the gains that followed the Trump administration's surprise decision to increase buybacks of longer-dated bonds, suggesting the move has done little to alleviate angst about surging government debt.
The US 10-year yield touched 4.71%, just shy of its highest level since early 2025, as angst over government debt pushed some yields to the highest in close to two decades.
Related Articles:
Bessent Boosts Debt Buybacks After Climb in Treasury Yields— The US Treasury announced it is at least doubling the size of its liquidity support buyback operations for government debt maturing in 10 to 30 years, following long-dated yields reaching their highest levels in years. Yields on the longest bond fell nearly 10 basis points to 5.185%.
The Coming Great Repression?— Across countries and over time, higher public debt burdens are associated with lower relative returns on government bonds, the opposite of standard risk-premium predictions. The authors estimate financial repression—making banks captive bond buyers and loading them with low-return reserves—contributed 90.7 percentage points of GDP to Britain's postwar debt reduction, versus 20.3 from surprise inflation.
The United States Capital Structure— Because Social Security and Medicare benefits are politically untouchable, retirees effectively hold the most senior claim on US government resources while Treasury bondholders hold the riskiest one. On this argument, bondholders absorb adverse fiscal shocks through surprise inflation, financial repression, or both.
AI Summary.Ten-year forward yields ten years ahead have risen across major advanced economies, not just the US, a global theme the author attributes to the debt buildup during the pandemic. The author argues economies have begun shifting from a good to a bad debt equilibrium, which he sees behind the rally in precious metals prices tied to a "debasement trade.
Robin BrooksRobin Brooks Substack
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Citing the growing number of fiscal “accidents,” from the 2022 collapse of the Truss government in the UK to ongoing depreciation pressure on the Yen, Brooks argues a global debt crisis is underway.
Are rising long-term yields a global story driven by pandemic debt?
Core argument: 10y10y forward yields have risen across key G10 economies, with the US not standing out, a pattern attributed to the global debt binge during the pandemic.
The chart shows 10y10y forward yields across key G10 economies. The US doesn’t even stand out in this perspective. Rising longer-term yields are a global theme and stem from the global debt binge that happened during the pandemic. There are multiple equilibria when it comes to debt, and it’s one of my big convictions that - in the years since the COVID pandemic - we’ve begun to shift from a good to a bad equilibrium. This is, in my opinion, why seemingly innocuous things like Powell’s dovish keynote speech at Jackson Hole a year ago sparked the absolutely insane rally in precious metals prices we saw last year. That “debasement trade” in my mind is all about markets seeing the writing on the wall when it comes to fiscal policy.
Takeaways by Macro Roundup® AI
10y10y forward yields have risen across key G10 economies, with the US not standing out, a pattern attributed to the global debt binge during the pandemic.
The author argues that debt has multiple equilibria and that a shift from a good to a bad equilibrium has begun in the years since the COVID pandemic.
The author attributes the rally in precious metals prices after Powell's dovish Jackson Hole keynote to a "debasement trade" reflecting markets' view of fiscal policy.
Related Articles:
Are Government Bonds Safe in Times of War and Pandemic?— Government bonds severely underperform in wartime, in absolute terms and relative to equities, housing, and economic growth, unlike in financial crises when bonds tend to outperform stocks. The U.S. and U.K. reduced war-driven debt-to-GDP ratios without explicit default, using surprise inflation and financial repression that shifted fiscal burdens onto bondholders.
Global Debt Report 2026— Gross central government borrowing across OECD countries rose 7% to a record $17tn, about 23% of GDP, and is projected to reach roughly $18tn, or 24% of GDP. The United States and Japan account for close to 80% of the area's refinancing requirements, with the US share rising from 57% to 70%.
Across The Rich World, Fiscal Crises Loom— An analysis estimates most rich countries could keep debt stable as a share of their economies with only small primary surpluses—Britain's required surplus is 0.3% of GDP—even if all debt were refinanced immediately at current rates, but the tightening needed to stabilize debt ratios exceeds 2% of GDP in Britain and America and 3% in France.
AI Summary.Using two centuries of U.S. data and a panel of advanced economies, the authors find government primary surpluses are more closely associated with debt-service costs than with debt-to-output ratios, which lose much of their explanatory power once debt service is accounted for. The association is stronger when financing conditions deteriorate.
Barry Eichengreen, Maxime Menuet and Gregory DonnatNational Bureau of Economic Research
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Do primary surpluses respond to the stock of debt or to how costly it is to service? Eichengreen et al test this back to 1800. Though the impulse responses are consistent with both, once service costs enter the model, debt-to-GDP loses significance.
Do debt-service costs explain fiscal adjustment better than debt ratios?
Core argument: Using two centuries of U.S. data and a panel of advanced economies, the authors find primary surpluses are more closely associated with debt-service costs than with debt ratios, which lose much of their explanatory power once debt service is included.
Using two centuries of U.S. data and a panel of advanced economies, we show that primary surpluses are more closely associated with debt-service costs than with debt ratios. Once debt service is taken into account, debt ratios lose much of their explanatory power. The evidence also suggests that this relationship is state-dependent. Primary surpluses are more strongly associated with debt-service costs when financing conditions deteriorate, especially when the interest-growth differential [“r-g”] becomes unfavorable. Standard debt-based fiscal reaction functions may overlook an important dimension of fiscal sustainability by focusing on debt accumulation rather than on the budgetary burden it creates. Ultimately, sovereign debt becomes fiscally constraining not when debt ratios reach a particular threshold, but when financing conditions transform outstanding liabilities into an immediate budgetary burden.
Takeaways by Macro Roundup® AI
Using two centuries of U.S. data and a panel of advanced economies, the authors find primary surpluses are more closely associated with debt-service costs than with debt ratios, which lose much of their explanatory power once debt service is included.
The evidence suggests the relationship is state-dependent, with primary surpluses more strongly associated with debt-service costs when financing conditions deteriorate, especially when the interest-growth differential ("r-g") becomes unfavorable.
The authors argue standard debt-based fiscal reaction functions may overlook a dimension of fiscal sustainability, since sovereign debt becomes fiscally constraining when financing conditions turn outstanding liabilities into an immediate budgetary burden rather than at a particular debt-ratio threshold.
Related Articles:
Inflation and Debt— Congressional Budget Office long-term projections show sustained primary deficits of 2% of GDP driving the debt-to-GDP ratio steadily higher, a path the agency itself labels unsustainable. Closing a 2% of GDP fiscal gap is economically straightforward for a growing country at peace, but inflation or default would not resolve the problem, since prospective deficits still require continued borrowing.
The Budget and Economic Outlook: 2026 to 2036— The Congressional Budget Office projects the federal deficit will grow from $1.9tn (5.8% of GDP) to $3.1tn (6.7%) over a decade, above the 3.8% averaged over the past 50 years, with rising net interest costs driving much of the increase. Federal debt held by the public is projected to rise from 101% to 120% of GDP.
How Might Fiscal Policy Respond to the Rise of Artificial Intelligence?— The Congressional Budget Office estimates that a permanent 0.5 percentage point increase in annual productivity growth would lower publicly held federal debt after 30 years by 39% of GDP, offsetting roughly half the projected rise from 101% of GDP to 175%. Higher revenue and slower spending growth outweigh higher interest costs.
AI Summary.The Congressional Budget Office estimates that a permanent 0.5 percentage point increase in annual productivity growth would lower publicly held federal debt after 30 years by 39% of GDP, offsetting roughly half the projected rise from 101% of GDP to 175%. Higher revenue and slower spending growth outweigh higher interest costs.
Karen Dynan, Douglas Elmendorf and Louise SheinerNational Bureau of Economic Research
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CBO baseline projects debt-to-GDP rising from 101% in 2026 to 175% in 2056. Dynan et al. study how AI might modify that projection. In all but their most optimistic scenario, TFP grows 0.5pp faster, and AI offsets 39–49 pp of that 74pp increase.
How much would faster productivity growth reduce federal debt?
Core argument: A permanent 0.5 pp increase in annual total factor productivity growth would lower publicly held federal debt after 30 years by 39% of GDP relative to CBO's extended baseline, offsetting roughly half of the projected rise.
[In the Base Case], faster economic growth [improves the federal budget and debt outlook] through four channels. First, [higher] incomes increase federal revenue, [while] the progressive tax system [modestly] raises revenue relative to GDP. CBO [estimates] that a [permanent] 0.5 pp increase in annual TFP growth would raise revenue after [30 years] by 0.14% of GDP. Second, [although] faster growth increases [some] federal spending, spending rises [more slowly] than GDP, [reducing noninterest outlays] relative to GDP. Under our [assumptions], discretionary spending falls from 6.1% of GDP in 2025 to 4.5% in 2056. Third, because faster growth does not [change the stock of] existing debt, that debt becomes smaller relative to GDP. Fourth, [stronger] growth generally raises interest rates, increasing the [cost] of new borrowing and [refinancing] existing debt. This represents a partial offset to the [fiscal gains]. [On balance], additional annual TFP growth of 0.5 pp would lower publicly held federal debt after [30 years] by 39% of GDP relative to CBO’s extended baseline. CBO’s extended baseline shows federal debt rising from 101% of GDP in 2026 to 175% in three decades, so this hypothesized increase in growth would offset roughly half of that projected rise.
Takeaways by Macro Roundup® AI
A permanent 0.5 pp increase in annual total factor productivity growth would lower publicly held federal debt after 30 years by 39% of GDP relative to CBO's extended baseline, offsetting roughly half of the projected rise.
CBO's extended baseline shows federal debt rising from 101% of GDP in 2026 to 175% three decades later, and CBO estimates a permanent 0.5 pp increase in TFP growth would raise revenue after 30 years by 0.14% of GDP.
Related Articles:
Can AI Avert the Impending Federal Budget Crisis?— U.S. GDP per capita, about $87,000, is projected to reach $102,000 by 2035 with 1.8% annual productivity growth, or $110,000 with 2.7% growth. Because the healthcare sector has been slow to adopt AI, health spending is projected to rise from 18.3% of GDP to 21% under slower growth and 21.7% under faster growth.
U.S. Treasury Investors Are Long in AI— The authors find U.S. government debt has a large positive productivity beta, because the tax code makes federal revenue highly sensitive to productivity growth while spending commitments change little, leaving bondholders implicitly long productivity growth. They argue greater market confidence in sustained productivity gains from AI could substantially reprice government debt, lowering nominal yields.
The Budget and Economic Outlook: 2026 to 2036— The Congressional Budget Office projects the federal deficit will grow from $1.9tn (5.8% of GDP) to $3.1tn (6.7%) over a decade, above the 3.8% averaged over the past 50 years, with rising net interest costs driving much of the increase. Federal debt held by the public is projected to rise from 101% to 120% of GDP.
AI Summary.Public debt in advanced economies has risen steadily, limiting governments' ability to cushion higher energy prices. Cyclically adjusted primary deficits averaged 1.9% of GDP in advanced economies since 2022 versus 1.1% over the two preceding decades, and 1.8% in emerging markets versus 0.1% from 2000–2019.
BIS StaffBank of International Settlements
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BIS warns, “Countries can no longer count on nominal growth to stabilise debt dynamics. They now must run primary surpluses or significantly smaller deficits to maintain stable debt-to-GDP ratios.”
Has rising public debt reduced governments' ability to cushion energy price shocks?
Core argument: Cyclically adjusted primary deficits in advanced economies averaged 1.9% of GDP from 2022 onwards, nearly double the 1.1% recorded over the two preceding decades.
Many countries entered the current energy crisis with limited fiscal space. Public debt in [Advanced Economies] (AE) has risen steadily over recent years (Graph 15.A), reducing governments’ ability to cushion fallout from higher energy prices. Although the increase partly reflects successive shocks, from the Covid-19 recession to the war in Ukraine, persistent failures to make meaningful progress on fiscal consolidation during economic expansions have also played a part. Cyclically adjusted primary deficits in AEs averaged 1.9% of GDP from 2022 onwards (Graph 15.B), nearly double the 1.1% recorded over the two preceding decades. [Emerging market economies] (EME) have seen an even sharper deterioration (1.8% since 2022 versus 0.1% between 2000 and 2019). Fiscal positions are set to remain strained over the coming years. Debt servicing costs are unlikely to ease soon, as higher interest rate payments continue to weigh on fiscal accounts (Graph 15.C). Deficits in 2027 are projected at or above 2025 levels in most jurisdictions.
Takeaways by Macro Roundup® AI
Cyclically adjusted primary deficits in advanced economies averaged 1.9% of GDP from 2022 onwards, nearly double the 1.1% recorded over the two preceding decades.
Emerging market economies saw a sharper fiscal deterioration, with cyclically adjusted primary deficits averaging 1.8% of GDP since 2022 versus 0.1% between 2000 and 2019.
Deficits in 2027 are projected at or above 2025 levels in most jurisdictions, with debt servicing costs unlikely to ease as higher interest rate payments weigh on fiscal accounts.
Related Articles:
Global Debt Report 2026— Gross central government borrowing across OECD countries rose 7% to a record $17tn, about 23% of GDP, and is projected to reach roughly $18tn, or 24% of GDP. The United States and Japan account for close to 80% of the area's refinancing requirements, with the US share rising from 57% to 70%.
Are Government Bonds Safe in Times of War and Pandemic?— Government bonds severely underperform in wartime, in absolute terms and relative to equities, housing, and economic growth, unlike in financial crises when bonds tend to outperform stocks. The U.S. and U.K. reduced war-driven debt-to-GDP ratios without explicit default, using surprise inflation and financial repression that shifted fiscal burdens onto bondholders.
Our Thoughts on Large US Deficits and Their Impact on Bond Yields— Total borrowing in the US is about average despite high government deficits, as high public borrowing has contributed to the need for higher interest rates that have depressed private sector borrowing. Risk premiums on long-dated debt look about average, with no market signs that economic or debt limits are currently being hit.
