What Treasury yields, mortgage rates, inflation and debt obligations are signaling about the economy.
In the early part of my career, this was a favorite saying of my old boss, a grizzled career fixed-income trader on a major U.S. bank’s bond desk who had traded through the volatility of the 1970s, 1980s and 1990s.
We may be in one of those times when the bond market is right first, and it is getting more than a little uncomfortable. Bonds are signaling concern about higher debt, higher inflation, and higher interest rates, while stocks are still largely celebrating AI and earnings growth. The tension between those two narratives is riveting the financial markets and causing the market’s current oscillations between fear and greed.
And lest I be accused of treading on political terrain, deficits have widened under divided and unified governments and under both parties, which points to structural causes and a failure of will in any Congress.
Why does today’s bond market action matter to you? Bond yields heavily influence borrowing rates of all kinds—mortgage rates, credit card rates, small business loans, auto loans and corporate borrowing costs, which all feed into the price of everything we consume. When rates rise, and especially if they become untethered due to inflationary fears, it can have a chilling effect on the economy, slowing spending, investment, hiring and confidence.
For most of the period between the start of the Great Financial Crisis in 2008 and 2022, the average interest rate the Treasury paid on its debt sat below the economy’s nominal growth rate. That gap is why large deficits drew relatively little attention. But that gap has closed at the margin. The weighted average rate on outstanding federal debt was 3.45% as of July 31, 2026, but new 10-year notes now yield around 5.00% and new 30-year bonds around 5.36%, with both at levels not seen in decades. Roughly $10 trillion of Treasury debt, about one-third of the marketable total, matures within 12 months, and every security refinanced at current levels pulls the average up.
Net interest is projected to be roughly $1.04 trillion in fiscal 2026, about 3.3% of GDP and 19% of federal revenue, more than the government spends on national defense. The Congressional Budget Office projects this number will rise to nearly 26% of revenue by 2036.
Foreign official holdings sit below their 2014 level (roughly 50% of marketable bonds outstanding versus 32% today) even as marketable debt grew roughly two and a half times. Money market funds, households and leveraged investors have taken their place as Treasury holders. That matters because the price-insensitive foreign buyers absorbed interest-rate risk without asking much for it. Their replacements (money funds, households and leveraged investors) often take a different point of view. While Treasuries will always find buyers at some yield, the question is what that yield turns out to be, and what it implies for every other asset priced against it.
Investors are understandably uneasy about these moves, because they know the “bigger, quieter and more right” bond market may be prescient about a shift in market conditions as the rubber meets the road on inflation and debt. Headlines reporting that the average 30-year fixed-rate mortgage leaped to 7.03% this week, according to Freddie Mac, raised alarm bells beyond investors and across Main Street America.
This is the first time the mortgage rate has passed the 7% mark in 20 months. Rates have risen sharply since March, and the fear is that borrowing costs at these levels will deepen the freeze on a housing market held stagnant for years by the high cost of homeownership, while also challenging the budgets of homeowners.
Times like this call for good planning, as effective market hedges in a period of potentially weakening economic growth and uncontained fiscal and inflation pressure are not easy to identify. The best plan is to prepare with fortified liquidity and to hold quality and diversified investments that can endure until or if policymakers and business leaders can work together to create sustainable growth, as well as a credible path to rein in debt and inflation.
Written by a human.