The $40 trillion debt number may be the smallest part of America’s fiscal problem

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The $40 trillion headline gets all the attention. The harder problem is that Washington keeps adding debt while the promises sitting outside that number keep growing too.

Rising bond yields add billions to G7 debt costs

https://www.ft.com/content/bbe90db5-64ac-441d-87e4-e984c5ef8629

Since the Iran war began, higher yields have already added about $16 billion to G7 debt financing costs. The US accounts for about $10.6 billion of that increase, with another $21.7 billion potentially added by Q1 2027 if yields remain elevated.

Treasury expands bond buybacks as long-term yields rise

https://www.reuters.com/world/china/us-treasury-stick-debt-auction-schedule-despite-bigger-buybacks-bessent-says-2026-08-24/

Treasury will begin larger buybacks of 10 to 30 year debt on September 10, with operations of at least $4 billion each planned for the next quarter. The move comes while long-term Treasury yields are near 20-year highs.

US debt crosses $40 trillion

https://www.reuters.com/world/us-debt-crosses-40-trillion-threshold-after-doubling-under-trump-and-biden-2026-08-19/

Total US debt reached $40.047 trillion on August 18. Debt held by the public was $32.266 trillion, while intragovernmental holdings were $7.782 trillion. The debt has more than doubled since early 2017.

Federal interest costs reach roughly $1 trillion

https://www.marketwatch.com/story/the-ugly-math-on-interest-expenses-yields-and-the-40-trillion-u-s-national-debt-cb72be3b

Annual federal interest expense has reached roughly $1 trillion, around 15% of federal outlays. With long-term yields still elevated, TD Securities estimates debt servicing costs could reach $1.5 trillion by 2029.

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