Why Are TIPS Yields Negative? Demand, Supply, and the Fed

TIPS yields go negative when investors want inflation protection badly enough to accept a small guaranteed loss against inflation to get it. The real yield on a Treasury Inflation-Protected Security is what you earn above or below inflation, and it slips below zero when demand for that hedge outruns the limited supply of bonds, or when the Federal Reserve is buying heavily. This is not a permanent state of the market. Negative real yields were common from roughly 2011 through 2021, but they have since turned positive, with the 10-year TIPS yielding around 1.72% as of early 2026.¹

What a Negative Real Yield Actually Means

The yield quoted on a TIPS is a real yield: your return after inflation. A TIPS yielding 1.5% pays you 1.5% on top of whatever inflation turns out to be. A TIPS yielding negative 0.5% means you will trail inflation by half a percentage point, but your purchasing power still tracks the rising cost of living far better than cash would. You are paying a small premium for the guarantee.

That guarantee comes from the bond’s structure. The Treasury adjusts the principal of a TIPS up and down with the Consumer Price Index for All Urban Consumers, the broadest inflation measure published by the Bureau of Labor Statistics.² Because interest payments are calculated on the adjusted principal, those payments grow during inflationary periods too. At maturity you receive whichever is greater: the inflation-adjusted principal or the original face value, so deflation cannot cut your payout below what you put in.³

The gap between a regular Treasury yield and a TIPS yield of the same maturity is called the breakeven inflation rate. If a 10-year nominal Treasury yields 4% and the 10-year TIPS yields 1.5%, the market is effectively pricing in about 2.5% annual inflation over the next decade. When investors expect higher inflation, or fear being wrong about it, they bid TIPS prices up and real yields down. Push that bidding hard enough and the real yield crosses into negative territory.

What Pushes Yields Below Zero

Two forces do most of the work: concentrated demand for inflation protection, and a supply of TIPS that is small relative to the rest of the Treasury market.

Demand From Institutions With Inflation-Linked Liabilities

Pension funds, insurance companies, and sovereign wealth funds often have mandates that require them to hold inflation-hedged assets. A pension fund owes retirees cost-of-living-adjusted payments decades into the future. For that fund, a TIPS with a negative 0.5% real yield may still be a better match for its liabilities than a nominal bond that could lose purchasing power to unexpected inflation. These buyers care more about matching obligations than about maximizing current income, and their purchasing pressure drives prices up and yields down.

Retail Buying During Visible Inflation

Retail investors add momentum when inflation is in the headlines. When grocery and energy prices spike, individual investors move money into TIPS mutual funds and exchange-traded funds, which then have to buy the underlying bonds to accommodate the inflows. That collective buying pushes prices further toward levels where the real yield turns negative. The hedge itself becomes more valuable than the income it provides.

A Constrained Supply

TIPS are a relatively small slice of the Treasury market. Original 5-year TIPS are auctioned only in April and October, 10-year TIPS in January and July, and 30-year TIPS just once a year in February, with reopenings on a limited schedule.³ A sudden jump in demand has an outsized effect on pricing compared with what the same jump would do in the much larger market for standard Treasuries. Less rope, sharper move.

The Federal Reserve’s Role

The single most powerful force pushing TIPS yields into negative territory has been the Federal Reserve. Through its quantitative easing programs, the central bank bought large quantities of Treasury securities, including TIPS, to lower long-term borrowing costs and stimulate the economy.⁴ The Fed buys regardless of price, so it acts as a huge price-insensitive buyer that pulls supply out of the open market.

With fewer bonds available for private investors, the ones that remain trade at higher prices and lower yields. During the Fed’s most aggressive purchasing periods after the 2007–2009 recession and the 2020 pandemic downturn, that dynamic helped push 5-year TIPS yields negative by March 2011 and 10-year yields negative by December 2011.⁵ The environment was intended to discourage traditional saving and push money into riskier assets that could support growth.

As of late 2026, the Federal Reserve is projected to hold roughly $312 billion in TIPS, about 14% of the total $2.3 trillion TIPS market.⁶ That share has come down from peak levels, but the Fed’s continued presence still meaningfully influences TIPS pricing. As the Fed reduces its holdings further, more supply flows back to private investors, which puts upward pressure on real yields — a process already visible in the return to positive yields.

Why Investors Willingly Accept a Negative Yield

Paying to hold a bond looks like a bad trade until you do the arithmetic on total return. Consider a bond with a negative 1% real yield purchased during a year when inflation runs at 6%. The principal grows by 6% while the negative yield subtracts only 1%, leaving a meaningful net gain in dollar terms. The negative yield is the cost of an insurance policy that keeps your investment moving with prices.

The deflation floor sweetens the deal. If prices fall during the bond’s life, the principal adjusts downward along the way, but at maturity the Treasury guarantees you receive at least the original face value.³ You get the upside of inflation and are shielded from the downside of deflation. For a large institution trying to preserve purchasing power rather than chase yield, that asymmetry can be worth a modestly negative real return.

What Happens When Conditions Reverse

Negative real yields are a feature of a particular environment: heavy central bank buying, strong institutional demand, and constrained supply. When those conditions ease, yields move back above zero. That is what the market has done since the long stretch of negative yields that ran from roughly 2011 through 2021. With the 10-year TIPS around 1.72% in early 2026, investors buying today are being paid a positive real return on top of inflation protection.¹ The forces that drove yields below zero can return, but they are not the market’s default state.

One boundary worth naming: the real yield you lock in at purchase is what matters to you. If you buy a TIPS at auction with a negative real yield and hold it to maturity, you have accepted that shortfall against inflation regardless of what yields do later. If you buy at a positive real yield, later moves into negative territory will raise the market price of your bond but do not change what you earn if you hold to maturity.

1
Federal Reserve Bank of St. Louis. Market Yield on U.S. Treasury Securities at 10-Year Constant Maturity, Inflation-Indexed
2
U.S. Bureau of Labor Statistics. Consumer Price Index Questions and Answers
3
TreasuryDirect. TIPS — TreasuryDirect
4
Congressional Budget Office. How the Federal Reserve’s Quantitative Easing Affects the Federal Budget
5
Federal Reserve Bank of St. Louis. Negative Interest Rates and Investors Flight to Safety
6
U.S. Department of the Treasury. Treasury Presentation to TBAC: Combined Charges Q1 2026