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Mortgage Rates, the 30-Year Treasury and the Next Test of Household Income

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The near-term economic picture is fragile. Housing finance is becoming more expensive just as inflation tests the purchasing power of earnings. The next question is whether household income can continue to absorb both pressures. The second monthly report on wages is due next week alongside the Personal Income data, which should confirm the monetary figures from the August employment report. The short-term situation is very fragile.

Mortgage rates and long-term bonds: two sides of the same pressure

Freddie Mac’s 30-year fixed mortgage rate reached 7.03% on September 24, up from 6.95% a week earlier and 6.76% two weeks earlier. The U.S. Treasury’s 30-year yield stood at 5.47% on September 24, compared with 5.29% on September 17. The mortgage rate is the borrowing cost facing prospective homebuyers; the Treasury yield is a broader signal of the market’s price for long-term capital. They are related, but they are not interchangeable.

Higher financing costs constrain affordability, refinancing and housing activity. They can also weigh on other rate-sensitive investment. If long-term yields remain elevated while income growth weakens, the pressure extends beyond the housing market.

GFC 2007–08 comparison

Mortgage and 30Y Bond rate – They represent the other side of the coin—the factors that triggered the disaster of 2007–2008. The difference is that, back then, the purchasing power of wages and earnings was negative; currently, it remains positive, though it bears close monitoring.

For the earlier long-bond comparison, see our July analysis of the 30-year Treasury yield, the 2007 parallels and Federal Reserve risk.

Housing finance deserves close attention because the reversal of the housing boom exposed weaknesses that helped trigger the 2007–08 financial crisis. That crisis involved much more than mortgage rates: weak underwriting, risky mortgage structures, excessive leverage and losses transmitted through the financial system were central to it. Today’s rate levels alone do not establish that those conditions have returned.

The useful comparison is the interaction between debt costs and the income available to service debt. Our working assessment is that household purchasing power still has some support, but the margin is thin and depends on which earnings measure is used.

Wages: positive weekly earnings, negative hourly earnings

August’s Bureau of Labor Statistics figures show why the distinction matters. Real average weekly earnings for all private employees rose 0.3% from a year earlier, helped by a longer average workweek. Real average hourly earnings fell 0.3% over the same period. Among production and nonsupervisory employees, real weekly earnings rose just 0.1%, while real hourly earnings fell 0.1%.

It would therefore be too broad to say that real wages are rising across the board. Weekly purchasing power remains marginally positive in these measures, but inflation has overtaken hourly earnings growth. An increase in hours can support a worker’s paycheck without improving the purchasing power of each hour worked.

September 30: the next monetary cross-check

The Bureau of Economic Analysis is scheduled to release August Personal Income and Outlays on Wednesday, September 30, at 8:30 a.m. Eastern. It will provide another view of wages and salaries, disposable personal income, spending and inflation. It will also incorporate annual updates, including revised wage and salary information, so earlier comparisons may change.

The previous report showed July real disposable personal income rising 0.4% from June, while real consumer spending was essentially flat. The August release can help assess whether income growth is continuing to protect spending power or whether inflation and borrowing costs are narrowing that cushion. BEA personal income and BLS average earnings measure different things; agreement between them would strengthen the assessment, while a divergence would require investigation.

Market risk: what would change the outlook?

  • More pressure: long-term Treasury and mortgage rates stay high, real income softens, and spending holds up mainly through reduced saving or additional borrowing.
  • Some relief: long-term yields ease while real disposable income and spending remain firm.
  • A harder growth signal: yields fall alongside weaker income and spending. Lower rates in that case would reflect deteriorating demand rather than a clean improvement in affordability.

Conclusion: The immediate risk is a squeeze, not a demonstrated replay of 2008. Mortgage rates and the 30-year bond yield show the cost side of that squeeze. September 30 will give us the next income and inflation reading needed to judge whether households can continue to carry it.

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