US debt peaking at 40 trillion dollars: the deep logic of short-term pressure on gold under a rebound in inflation

According to Woofun AI, the September CPI data released by the US Bureau of Labor Statistics on October 14, 2026 became a turning point in the market, and spot gold prices fell significantly. This immediate reaction was not an accident; it was a direct reflection of the market's rebound in inflation and the repricing of interest rate paths. The core fact is that although inflation is generally viewed as a favorable factor for gold, the short-term trading logic has fundamentally shifted in the current macro context where high debt coexists with high interest rates. The sharp fluctuation in the price of gold after the data was released revealed investors' sensitive expectations of the Federal Reserve's policy position, as well as the profound impact of interest burdens on US bonds on global asset allocation.

This phenomenon marks the deepening of the role of gold from a simple 'anti-inflationary tool' to a 'currency and credit hedging asset'. Its short-term trend and long-term value logic are undergoing structural decoupling.

A detailed breakdown of inflation data reveals the true extent of the erosion of purchasing power. The September CPI rose 3.7% year on year, higher than the 3.4% in August and the market forecast of 3.6%, up 0.6% month on month; core CPI rose 2.6% year on year and 0.3% month on month. Energy prices are the main driver. Gasoline prices rose 9.1% in a single month, and the overall energy index rose 5.2%, accounting for more than half of the overall increase in that month. The deeper problem is the long-term loss of purchasing power. Since 2020, cumulative inflation has drastically reduced the purchasing power of a fixed amount of money. Assuming holding $100,000 in cash in 2020, the current actual purchasing power is only equivalent to around $76,000 of goods and services based on official cumulative inflation.

The market generally believes that official statistics may have underestimated the actual increase in the cost of living, and some observers estimate that the actual cumulative inflation over the past six years may have exceeded 30%. Wage growth did not fully keep up, and actual average hourly and weekly wages declined in September. Social Security's 2027 Cost-of-Living Adjustment (COLA) was set at 3.6%, with an average monthly increase of about $75. This increase was slightly lower than the CPI year-over-year reading of 3.7% in September, causing the purchasing power gap for fixed-income groups to continue to widen. Inflation is essentially a shift in the purchasing power of money. Groups holding cash or low-yield nominal assets suffer, while groups that hold physical assets or can hedge against inflation are relatively benefited.

Analysis of market mechanisms shows that the short-term decline in gold prices is an immediate reaction to interest rate expectations, not a denial of long-term logic. On October 14, gold fell rapidly from around 4160 US dollars/ounce, and the intraday low was close to the $4080 area, then fluctuated to around $4150 on October 15.

This fluctuation reflects short-term traders' concerns about changes in 'real interest' and the immediate flow of funds. Higher inflation readings reinforce expectations that “interest rates may remain high or even rise further”. In an environment where interest rates rise, the opportunity cost of gold as an interest-free asset rises, and capital tends to flow to treasury bonds or money market instruments that provide higher nominal returns. Historically, there was a situation where inflation, interest rates, and gold prices rose at the same time in the 1970s, but in the current market structure, when the market believes that the Fed may take more hawkish action in October or later, non-interest-bearing assets such as gold will face selling off pressure.

This sell-off pressure is often concentrated in the first few hours of data release, followed by repricing based on subsequent interest rate paths and actual economic data. Therefore, the fall in gold prices on October 14 is a typical short-term trading behavior. What is behind this is a market game over the Fed's policy path rather than a denial of the long-term preservation properties of gold.

According to data compiled by Woofun AI, the panorama of the debt crisis shows enormous pressure on size, deficits, and interest expenses. As of early October 2026, the US federal debt had exceeded 40.3 trillion US dollars, of which the public held about 32.4 trillion to 32.5 trillion US dollars, and the government held about 7.8 trillion to 7.9 trillion US dollars within the government. The fiscal deficit was close to $2 trillion in fiscal year 2026, accounting for about 6% of GDP, and remained high even without a severe recession, reflecting structural spending pressure. Interest expenses are a key variable. Federal interest expenses in the 2026 fiscal year ranged from about $1.14 trillion to $1.36 trillion, surpassed the defense budget, and approached or exceeded some major social welfare expenses. The average interest rate rose to around 3.5%, far higher than during the zero interest rate period. When the debt reaches the level of $40 trillion, that is, the convenience ratio rises by only a few dozen basis points, annual interest expenses will also increase by tens of billions of dollars.

This high interest burden not only squeezes other fiscal spending space, but also heightens market concerns about debt sustainability, and is an important factor driving long-term returns to remain high.

Changes in the financing structure have further increased the pressure to operate at high yields. The 20-year US Treasury yield hovered around 5.44% to 5.5% in mid-October, significantly higher than the post-pandemic period of low interest rates. Long-term yields remain high, directly driving up government financing costs. Over the past few years, the buyer structure of US Treasury bonds has changed markedly. The share of “price insensitive” buyers such as central banks and official agencies has declined, and the share of “price sensitive” buyers such as private investors, funds, and brokerage firms has increased. By the end of 2025, more than half of the buyers were price sensitive.

These buyers pay more attention to yield and risk-return, and when inflation expectations rise or the fiscal path is uncertain, they demand higher compensation interest rates, which explains why it is difficult for long-term returns to fall quickly. Foreign demand declined in stages over part of the period (especially the 20-year period), and the share of indirect tenders once hit a record low. To maintain demand, the Ministry of Finance had to accept higher interest rates or increase the proportion of short-term notes issued. Increasing short-term debt can temporarily reduce average financing costs, but short-term debt requires frequent rolling. Once the market experiences a decline in risk appetite or tight liquidity, the pressure to refinance will rapidly increase. This is a typical approach to dealing with long-term problems using short-term measures, and long-term sustainability is questionable.

The restructuring of long-term logic points to monetization risks and key tracking variables. Gold is affected by interest rate expectations in the short term, while the long term is determined by the stability of the money supply and credit system. When interest burdens on government debt continue to rise, private buyers demand higher returns, and official foreign buyers are less willing, the last buyer is often the central bank. Once the Federal Reserve is forced to make large-scale debt purchases or provide liquidity in other ways, the expansion of the money supply will accelerate, and the purchasing power of fiat money will decline further.

This process will not be completed on a single data release date; it is cumulative. The current recovery in inflation data, debt interest surpassing trillion dollars, and long-term yields remaining high are all part of this cumulative process. The core logic of holding physical gold and silver is to hedge against this risk of long-term currency depreciation rather than capturing every short-term interest rate fluctuation. The market often sees gold as an 'inflation hedge'; the more accurate expression is a 'currency purchasing power hedge'. When debt monetization becomes the final choice, the long-term trend of gold will diverge from short-term interest rate trading. Key variables that need to be continuously tracked in the future include subsequent CPI and core inflation paths, actual actions in the Federal Reserve's policy, long-term yield trends, the share of foreign and private demand in treasury bond auctions, and interest expenses as a share of fiscal revenue. Any trend deterioration could accelerate the market's repricing of monetary credit risk.