TIPS vs nominal Treasuries: what breakevens reveal

Why this comparison matters

Most investors frame the choice as a binary: nominal bonds for a stable income, TIPS for inflation protection. That framing misses the mechanism that actually links them. The market continuously prices an expected inflation path into the yield gap between the two securities, called the breakeven. Buying TIPS over nominal Treasuries is therefore a bet on inflation relative to that already-embedded expectation, not on inflation in the abstract. Once the comparison is reframed this way, the periods when one structurally outperforms the other become predictable from the data rather than from headlines.

What nominal Treasuries are

A nominal Treasury pays a fixed coupon and returns a fixed face value at maturity, both denominated in current dollars. Its yield embeds the market’s expected average inflation plus a real return plus risk premia. When realised inflation exceeds what was priced at purchase, the holder’s purchasing power erodes; the dollar cash flows do not change. The 10-year nominal yield (FRED DGS10) is the most-watched benchmark for the global cost of capital.

→ Fuller explanation: What is the difference between real and nominal interest rates?

What TIPS are

Treasury Inflation-Protected Securities adjust their principal upward with the realised CPI; the fixed coupon rate is then applied to the inflated principal, so both the coupon dollars and the redemption value rise with inflation. The quoted TIPS yield is a real yield (FRED DFII10), the return above inflation. In late 2020 that 10-year real yield fell to roughly −1.0% and reached deeper negatives into 2021, meaning buyers locked in a guaranteed loss of purchasing power versus CPI to obtain the protection, per FRED.

→ Extended explanation: What are TIPS and how do they work mechanically?

The key differences

Mechanism. A nominal bond fixes nominal cash flows and lets inflation eat the real value; a TIPS fixes the real value and lets the nominal cash flows float with CPI. The nominal holder bears inflation risk; the TIPS holder transfers it to the issuer in exchange for accepting a lower starting real yield. The side-by-side comparison index is where the rest of these pages are kept.

What you are actually betting on. This is the non-obvious axis. Contrary to the idea that TIPS simply “win when inflation is high,” they outperform nominal Treasuries only when realised inflation exceeds the breakeven priced at purchase. The 10-year breakeven (FRED T10YIE) peaked at 3.02% on 25 April 2022, the highest in the series’ history, driven by the energy shock; it later normalised back toward 2.3%. A TIPS bought near that peak needed inflation above 3% to beat the nominal alternative.

Risk and liquidity. TIPS still carry real-rate duration: when real yields rose from roughly −1.2% in late 2021 to above +1.5% through 2022–2023, long TIPS fell in price alongside nominal bonds. The TIPS market is also thinner, so in liquidity shocks (March 2020) breakevens can gap on flow, not expectations, briefly distorting the signal.

How they behave across regimes

The breakeven is the switching parameter. In a disinflationary regime with stable or falling real rates (2014–2019), realised CPI tended to undershoot the breakeven, so nominal Treasuries typically delivered the better total return and TIPS’ inflation accrual went largely unused. In the 2021–2022 inflation surge, realised CPI ran far above the breakeven priced in 2020, and TIPS’ principal adjustment paid off relative to nominals on a like-for-like basis. But in the 2022 real-rate repricing — the 10-year real yield swinging from about −1.2% to above +1.5%, per FRED — both fell in price, because rising real rates hit duration regardless of the inflation wrapper. The decisive variable is therefore inflation surprise versus the breakeven, conditioned by the direction of real rates. Worth reading alongside: our analysis “Inflation Explained”.

TIPS are not a bet on inflation; they are a bet on inflation beating the price already paid for protection.

→ Framework: Monetary regimes, interest rates & liquidity

The common confusion

The frequent error is treating TIPS as unconditional inflation insurance — assuming that any inflation makes them the better holding. The data shows the protection is priced: when the breakeven already embeds a high inflation path, that path has to be exceeded for TIPS to outperform. A related confusion is reading the breakeven as a pure forecast; in stressed markets it partly reflects TIPS liquidity rather than expectations, as in March 2020 when the 10-year breakeven briefly collapsed toward 0.5% without a true expectations reset.

Practical observation

Go deeper

Related guides

• Why do real yields matter more than nominal yields?
• Policy rates vs long-term rates: why they move differently

Frequently asked questions

How are TIPS different from nominal Treasuries in practice?

A nominal Treasury fixes its dollar cash flows and lets inflation erode their purchasing power; a TIPS indexes its principal to realised CPI, so its dollar cash flows rise with inflation while its quoted yield is a real yield. The nominal holder bears inflation risk; the TIPS holder pays for transferring it by accepting a lower starting real yield, which was negative — around −1.0% on the 10-year — in late 2020 according to FRED.

When does buying TIPS beat buying nominal Treasuries?

Historically, TIPS outperform nominal Treasuries of the same maturity only when realised inflation exceeds the breakeven rate embedded in the yield gap at purchase, not simply when inflation is positive. The 10-year breakeven peaked at 3.02% in April 2022, so a TIPS bought near that level required CPI above roughly 3% to win. Below the breakeven, the nominal bond typically delivers the higher total return.

Why can TIPS and nominal Treasuries both lose money at the same time?

Both carry duration to real rates. When the 10-year real yield rose from about −1.2% in late 2021 to above +1.5% through 2022–2023, the present value of future cash flows fell for both instruments. Inflation indexing protects the real value of a TIPS held to maturity but does not shield its market price from a real-rate repricing, which is why 2022 saw inflation-protected and nominal bonds decline together.

Last updated — 12 July 2026