Viewpoints: December 2025

With the passage of the One Big Beautiful Bill Act (OBBBA) of 2025, already high US federal budget deficits will rise even higher than projected by the Congressional Budget Office (CBO) at the beginning of the year. One element contributing to the rise in the deficits will be interest on the public debt. With the Treasury’s policy of shortening the maturity of the public debt and the politicization of the Fed, I fear that the US government will effectively default on its debt via inflation.

Plotted in the chart below are fiscal year (FY) ratios of federal net interest payments on the public debt to federal net revenues (blue bars) along with end-of-quarter 3-month Treasury bill rates and 10-year Treasury yields. In FY 2025, the ratio of net interest on the public debt to federal net revenues was 5.4, the lowest in the post-WWII era and the lowest since FY 1991, when interest rates were almost twice the level they are now. You can think of the ratio of net interest to net revenues as similar to a corporation’s interest coverage. The CBO forecasts that with the passage of OBBBA, net interest will increase by $4.7 trillion starting in FY 2026 through FY 2029. Unless there is a Festivus miracle resulting in a commensurate increase in federal net revenues, the federal government’s interest coverage will fall below that of an already low FY 2025’s.

On December 18 the Bureau of Labor Statistics (BLS) released the Consumer Price Index (CPI) for November. In October, when the federal government was partially shut down, BLS did not conduct its survey of prices, leaving most of them unrecorded for that month. Therefore, rather than reporting the usual 1-month percent changes in prices for November, BLS reported 2-month percent changes instead. For example, from September to November, the core CPI advanced at a 1% annualized rate – a surprisingly benign reading that, if accurate, significantly improves the current narrative on inflation and strengthens the case for easier monetary policy.

Unfortunately, the potential impact of the shutdown on both the quality and timing of the November survey raises legitimate concerns about the reliability of its results. One particularly dodgy-looking element of the report was a quite sharp deceleration in the CPI for shelter, the 2-month annualized percent change of which dropped from 3.9% in September to just 1.1% in November (gold line in chart). An erroneous reading here could be of considerable importance given that shelter costs comprise nearly 18% of “core” personal consumption expenditures.

The CPI-shelter reflects rents on tenant- and owner-occupied housing units. Imputed rents on owner-occupied units are inferred from observed rents on nearby comparable tenant-occupied units. Because shelter costs reflect average rents, they are highly inertial, lagging well behind current (i.e., marginal) market conditions for two reasons. First, rental contracts typically are for one year, requiring twelve months for all contracts to reflect a change in market conditions. Second, the BLS rotates through a panel of renters over a period of six months, adding another half year to the lag between marginal and average rents.

However, these lags allow one empirically to relate the CPI-shelter to current and past new rental contracts. I did so by estimating a model that explains the CPI-shelter with current and lagged values of Zillow indices of observed newly contracted rents. These indices are available monthly through November. I then used that model to forecast the shelter costs for the months of October and November. The resulting projection of the 2-month change in the CPI-shelter is shown in the blue line in the chart.

The model suggests that from September through November the CPI-shelter grew at an annualized rate of 2.9%, 1.8 percentage points faster than the number published by BLS. To me, the projection seems more believable than the reported figure. Replacing the latter with the former raises the 2-month annualized change in the core CPI by approximately 0.3 percentage points, to 1.3% - still a good reading, but not as good. And, of course, all this makes one wonder about the reliability of estimates of other prices in the report. So, before concluding prematurely that inflation is quiescent, it makes sense for one to await additional months of readings.

For all the talk of a weakening labor market, the wage bill for private nonfarm employees (private nonfarm employees times their average weekly earnings) has risen at annualized rates of 5.85% and 5.91% in October and November, respectively, compared to the median increase of 5.75% in the eleven moths of 2025. If these data are valid, it would seem that labor market earnings are growing relatively fast, especially in light of all the talk of a weak labor market. Why would employers be increasing the labor wage bill so rapidly if labor demand were weak? Perhaps because the labor supply is shrinking.

We have been overweight Korean equities this year—and it has paid off, handsomely. The allocation decision was anchored in the business-cycle framework: three of five key indicators pointed clearly toward expansion at the start of the year. The cost of capital was supportive, the credit cycle was in a firm upswing, and money-supply growth was accelerating. The corporate profit cycle, though still technically in downturn, was already showing improvement thanks to strong balance sheets. The major drag was the investment cycle, which continued to lag.

What has surprised us is the speed of the profit-cycle recovery, especially against the year’s backdrop. From Trump’s tariff war to domestic political turbulence following the impeachment of President Yoon Suk-yeol and the snap elections in June, one would have expected a more cautious rebound. Instead, the listed sector delivered a solid performance. Return on equity averaged 7% in the first three quarters, up from 5.6% a year earlier and nearly back to the seven-year average of 7.3%. EBITDA cash flow per share, free cash flow per share, and retained earnings all advanced. EBITDA rose almost 20% year-on-year, cash flow per share climbed 29%, and free cash flow per share swung decisively into positive territory.

Central-bank data paint a similarly encouraging picture. Profitability and interest-coverage ratios have improved markedly for large corporates, even as debt-to-capital ratios inched higher. SMEs have seen some deterioration, but the stress is neither systemic nor alarming at this stage.

And yet, despite these solid fundamentals, Korea Inc has continued to err on the side of caution (Figure 1). Companies tightened spending this year and delayed new investment plans. As a result, the investment cycle slid deeper into downturn: real spending on both facilities and construction has contracted for six consecutive quarters. Rather than expand capacity, firms have chosen to run down inventories and utilise existing manufacturing facilities more intensively. Operating rates have increased, allowing companies to meet rising shipments without committing fresh capital.