Real Rates: The True Cost of Capital Is Repricing

The 10-year real yield sets the minimum return a project has to clear once inflation is stripped out. Having climbed from −1% to nearly 3% in five years, it has moved that hurdle for every borrower.

Long-term US yields have gained almost four points since 2021. None of that increase reflects higher expected inflation, which is precisely why the price of capital has changed.

A hurdle back at its pre-2008 level

The real rate can be read straight off Treasury inflation-protected securities, or TIPS, whose coupon and principal track the consumer price index. Their 10-year yield, published daily as DFII10, stood at 2.91% on October 6, 2026. The last higher session dates back to November 24, 2008, at 3.11%.

The previous decade was the outlier. From 2010 to 2019 the yield averaged 0.42%, and it stayed below zero without a break from August 10, 2011 to April 28, 2022, bottoming at −1.19% on August 3, 2021. Over 2003-2007, before the financial crisis, the average was 2.06%. The recent climb has taken the hurdle back to where it stood in the mid-2000s, and slightly beyond.

It happened in two stages. The exit from negative territory was abrupt: first positive reading on April 29, 2022, 1.72% by end-2023. Since then the grind has been slower. September 2026 averaged 2.5% through the 17th and 2.64% for the full month, after 1.88% in the first quarter.

Since 2021, every point added to Treasury yields has been real.

What the market expects, and what it demands

The nominal 10-year yield splits into two pieces: the TIPS real yield and the breakeven inflation rate, the gap between the two securities, which the market treats as average expected inflation over ten years. The prevailing account of higher long rates since 2022 is an inflation story, with nervous investors demanding more compensation.

Treasury data point elsewhere. On December 31, 2021, the nominal 10-year yield was 1.52%, the real yield −1.04% and the breakeven rate (series T10YIE) 2.56%. On October 6, 2026, the same three numbers were 5.27%, 2.91% and 2.36%. The nominal yield gained 3.75 points, the real yield 3.95, and expected inflation lost 0.20 point. Since 2023 the breakeven has stayed between 2.02% and 2.52%.

That decomposition changes the question. Investors are not asking for more protection against inflation; they want a higher return after inflation has been paid. That real return is the rent on money for every long-term borrower, the federal government included, and it bears on decisions that inflation leaves untouched. The split is broken down further in the gap between TIPS yields and expected inflation.

The cost of capital runs through discounting

A company, a building or a bond is worth the sum of its future cash flows brought back to today. The risk-free real rate is the base for that discounting, with an asset-specific premium on top. When the base rises, every distant cash flow loses value, even if the premium and the cash flows themselves are unchanged.

The order of magnitude is easy to set out. A real dollar due in ten years, discounted at 0.42% (the 2010-2019 average), is worth 21.7% more than the same dollar discounted at 2.91%, on an Eco3min calculation from the DFII10 series. At thirty years the gap reaches 52%. The more an asset’s value rests on distant cash flows, the harder the hit: loss-making growth companies, long-lived infrastructure, property valued on future rents. The link to equity multiples is covered in how real rates feed into equity valuations.

The calculation holds cash flows constant, and that is its limit. An economy that can bear a higher real rate may also generate higher profits. The question then becomes the return on invested capital, which companies now have to lift above a hurdle roughly two and a half points higher than in the 2010s.

Corporate debt, the first visible channel

For a company, the risk-free real rate is only a floor. The average yield on bonds rated Baa by Moody’s, the lowest investment-grade bucket, was 3.90% at end-2019 and 6.73% on October 6, 2026 (series DBAA). Net of that day’s breakeven rate, the real cost went from 2.1% to 4.4%. It has more than doubled.

The hit to income statements comes with a lag. Companies that termed out fixed-rate debt in 2020 and 2021 pay the new rate only when they refinance, loan by loan. The channel works in waves of maturities rather than all at once, as set out in the transmission of rates to corporate margins. The most leveraged issuers feel it first, because their credit spread sits on a higher floor.

The same hurdle screens investment projects. A project earning 3% in real terms was easy to fund when money cost nothing after inflation. It no longer covers Baa debt at 4.4% real. The economy-wide effects of that shift are discussed in the new monetary regime and the real economy.

What could distort the reading

The TIPS yield is not a pure real rate. These securities trade less actively than nominal Treasuries, and holders demand a premium for that, which nudges the measured real yield up and the breakeven down. The premium moves most under stress, as in autumn 2008, when the TIPS yield jumped to 3.11% during the rush into the most liquid paper.

Nor is the 10-year real yield the long-run neutral rate, which the Fed estimates without observing it. Part of the rise may reflect a term premium, the compensation for holding a long bond rather than rolling short-term paper, and it could recede if public debt issuance or uncertainty eases. A reading of 2.91% is a market price on a given day. It is not a lasting floor.

Two series to watch

DFII10 remains the most direct gauge of the real hurdle rate. Its 2003-2007 average of 2.06% is the benchmark for judging whether today’s level is exceptional or simply back to the pre-2008 norm. The T10YIE breakeven shows where a move in nominal yields comes from: when nominal yields rise with a stable breakeven, as they have since 2023, the increase falls on the real price of capital.

For corporate credit, the gap between the Baa yield and the breakeven fills in the picture. It has gone from 2.1% to 4.4% in six years, and its path through the refinancing waves will show how far the higher hurdle reaches into company accounts.

Last updated — 8 October 2026