TIPS: How U.S. Inflation-Protected Treasury Bonds Work

TIPS function differently from conventional Treasury bonds in one critical respect: their principal value adjusts based on changes in the Consumer Price Index for All Urban Consumers (CPI-U). When the CPI rises, the principal increases; when the CPI falls, the principal decreases. A fixed coupon rate is then applied to this adjusted principal, meaning that semiannual interest payments rise and fall with inflation.

Consider a simplified example. An investor purchases $10,000 in TIPS with a coupon rate of 0.983%. If the CPI rises by 2.2% over the next year — consistent with the January 2026 year-over-year reading — the adjusted principal becomes $10,220. The semiannual coupon payment is calculated on this new, higher principal: 0.983% of $10,220, divided by two, yields approximately $50.23 per payment rather than the $49.15 that would have applied to the original par value.

TIPS are issued in three maturities:

• 5-year TIPS — Shorter duration, lower interest rate risk, suitable for investors with near-term inflation concerns
• 10-year TIPS — The most actively traded maturity and the benchmark for breakeven inflation calculations
• 30-year TIPS — Longest duration, highest sensitivity to real yield changes, appropriate for long-horizon investors

One of the most important structural features of TIPS is the deflation floor. While the adjusted principal can decrease during periods of deflation, at maturity the Treasury guarantees that the investor receives the greater of the adjusted principal or the original par value. This means an investor can never receive less than their initial investment at maturity, even if cumulative deflation has eroded the adjusted principal below par. During the holding period, however, the adjusted principal — and therefore the coupon payments — can temporarily decline if the CPI falls.

The distinction between real yield and nominal yield is central to understanding TIPS valuation. A conventional <a href="/posts/2026-03-01/treasury-yield-curve-what-the-spread-tells-you-now">10-year Treasury</a> note, yielding 4.02% as of February 2026, pays a nominal yield — the total return before accounting for inflation's erosion of purchasing power. TIPS, by contrast, pay a real yield of approximately 0.983%, representing the return above and beyond inflation.

The breakeven inflation rate is the difference between these two figures:

Breakeven = 10Y Nominal Yield - 10Y TIPS Real Yield Breakeven = 4.02% - 0.98% = 3.04%

This 3.04% breakeven rate represents the annual inflation rate at which an investor would earn the same total return from either a nominal Treasury or a TIPS over the next ten years. If actual inflation averages above 3.04% annually, TIPS outperform nominal Treasuries. If inflation averages below 3.04%, nominal Treasuries deliver the better return.

Investors can access TIPS through several channels, each with distinct advantages depending on portfolio size and trading needs.

TreasuryDirect

The U.S. Treasury's TreasuryDirect platform allows individual investors to purchase TIPS directly at auction through non-competitive bids. Non-competitive bidders accept whatever yield the auction determines, guaranteeing that their order is filled. The minimum purchase is $100, and TIPS are held electronically in the investor's TreasuryDirect account. This method eliminates brokerage fees and ensures the investor receives the exact auction yield without a dealer markup.

TIPS auctions follow a regular schedule:

• 5-year TIPS — Auctioned in April and October (reopened in intervening months)
• 10-year TIPS — Auctioned in January and July (reopened in intervening months)
• 30-year TIPS — Auctioned in February and August (reopened in intervening months)

Secondary Market

For investors who need to buy or sell TIPS between auctions, the secondary market is accessible through any brokerage account. TIPS trade actively on the secondary market, and prices fluctuate based on changes in real yields, inflation expectations, and broader interest rate movements. Liquidity is generally strong for 10-year TIPS but can be thinner for 5-year and 30-year maturities.

TIPS Mutual Funds and ETFs

For investors seeking diversified exposure without managing individual bonds, several exchange-traded funds provide broad TIPS market access:

• iShares TIPS Bond ETF (TIP) — The largest TIPS ETF, tracking the Bloomberg U.S. Treasury Inflation-Protected Securities Index across all maturities
• Vanguard Short-Term Inflation-Protected Securities ETF (VTIP) — Focuses on TIPS with maturities under five years, reducing interest rate risk
• Schwab U.S. TIPS ETF (SCHP) — A low-cost alternative tracking the Bloomberg U.S. Treasury Inflation-Protected Securities Index

ETFs offer daily liquidity, automatic reinvestment of coupon payments, and diversification across multiple TIPS maturities. The trade-off is an expense ratio — typically between 0.03% and 0.20% — and the loss of the deflation floor guarantee, since the fund can sell bonds before maturity.

TIPS are not the only tool available for inflation protection. Understanding how they compare to alternatives helps investors allocate appropriately.

TIPS vs <a href="/posts/2026-03-01/i-bonds-vs-treasury-bonds-which-one-should-you-buy">I Bonds</a>

Series I Savings Bonds (I Bonds) are another Treasury-issued inflation-linked product, currently offering a composite rate of 4.213%. Key differences include:

Feature	TIPS	I Bonds
Annual purchase limit	No limit	$10,000 per person per year
Marketability	Traded on secondary market	Non-marketable, non-transferable
Current yield/rate	~0.983% real yield	4.213% composite rate
Interest payment	Semiannual coupon	Accrued, paid at redemption
Minimum holding period	None (if purchased on secondary market)	12 months
Tax treatment	Federal tax on coupon + inflation adjustment annually	Tax deferral until redemption

I Bonds offer a higher current composite rate and tax deferral advantages, making them attractive for smaller allocations. However, the $10,000 annual purchase limit and lack of marketability make TIPS the only viable option for institutional investors or individuals seeking larger inflation-protected positions.

TIPS vs Nominal Treasuries

With the 10-year nominal Treasury yielding 4.02% and 10-year TIPS yielding 0.983% in real terms, the choice depends entirely on the investor's inflation outlook. If inflation averages above the 3.04% breakeven over the holding period, TIPS outperform. If it averages below, nominal Treasuries win. At the current CPI rate of 2.2% year-over-year, nominal Treasuries are delivering the better real return — but that could change quickly if inflationary pressures re-emerge.

TIPS vs Gold

Gold is often cited as an inflation hedge, but its correlation with CPI is inconsistent over short and medium time horizons. TIPS offer a contractual, CPI-linked return, while gold's price depends on supply and demand dynamics, central bank purchases, and investor sentiment. For investors seeking a reliable, measurable inflation hedge, TIPS provide certainty that gold cannot match.

TIPS vs TIPS ETFs

Holding individual TIPS to maturity guarantees the deflation floor and the return of at least par value. TIPS ETFs, by contrast, continuously roll their holdings and mark positions to market, meaning investors bear interest rate risk without the maturity guarantee. In a rising-rate environment, TIPS ETF prices can decline even as the underlying bonds' inflation adjustments increase. For buy-and-hold investors, individual TIPS purchased at auction often make more sense than ETF exposure.

The February 2026 TIPS market presents a complex picture shaped by diverging inflation signals and an evolving Federal Reserve policy stance.

The 10-year breakeven inflation rate of approximately 3.04% stands well above the Fed's 2% target and above the current CPI reading of 2.2% year-over-year. This elevated breakeven suggests that bond markets are pricing in a re-acceleration of inflation over the medium term — or at minimum, a sustained period of above-target price growth. Several factors may be driving this premium: persistent services inflation, fiscal deficit concerns, and the potential for supply-side disruptions.

Meanwhile, the Federal Reserve has been cutting rates, bringing the federal funds rate down to 3.64% in January 2026 from 4.33% in early 2025. This easing cycle has supported both nominal and real bond prices, but it also signals that the Fed sees sufficient progress on inflation to loosen monetary policy. The tension between a rate-cutting Fed and elevated breakeven inflation creates an unusual environment for TIPS investors.

For investors considering TIPS allocations today, the key question is whether actual inflation will converge toward the 3.04% breakeven or remain closer to the current 2.2% pace. If inflation stays near 2.2%, nominal Treasuries at 4.02% deliver a real return of roughly 1.82% — meaningfully higher than the 0.983% real yield on TIPS. However, if inflation surprises to the upside — due to tariff effects, energy price shocks, or a resurgence in housing costs — TIPS holders are protected while nominal bondholders suffer erosion of purchasing power.

The current TIPS real yield near 1% is historically attractive. For much of the 2010s and early 2020s, TIPS real yields were negative, meaning investors were paying for inflation protection. A positive real yield approaching 1% means TIPS investors are earning a genuine return above inflation — a meaningful improvement in the value proposition for these securities. For more on how Treasury securities fit into the broader fixed-income landscape, see our guide on How Treasury Bonds Work.