Treasury Bond — The World's Benchmark Safe Asset

Definition

Treasury bonds (T-bonds) are long-term debt securities issued by the U.S. Department of the Treasury, backed by the "full faith and credit" of the United States government. T-bonds pay semi-annual interest (coupons) and return the face value at maturity. With maturities of 20-30 years, they are the longest-dated instruments in the Treasury market.

More broadly, "Treasuries" encompasses the entire family of U.S. government securities — bills, notes, bonds, TIPS, and I-bonds — which collectively form the largest and most liquid debt market in the world, with over $33 trillion outstanding (2025).

Treasuries serve as the global benchmark for risk-free assets, the foundation of yield curve analysis, and the primary safe-haven instrument during financial crises.

How It Works

The Treasury securities family

How T-bond pricing works

T-bonds are quoted as a percentage of face value:

• Par (100): Bond pays exactly the coupon rate as yield
• Premium (>100): Yield is lower than the coupon rate (bond is expensive)
• Discount (<100): Yield is higher than the coupon rate (bond is cheap)

Inverse relationship between price and yield: When demand rises → Price rises → Yield falls When demand falls → Price falls → Yield rises

This is the most important relationship in fixed income: price and yield move in opposite directions.

Duration — measuring interest rate risk

Duration measures how sensitive a bond's price is to interest rate changes:

A 30-year T-bond is highly sensitive to interest rates. The 1% rate increase in 2022 caused 30-year bonds to lose ~17% in market value.

The yield curve

The yield curve plots Treasury yields across all maturities:

Normal curve (long-term > short-term): Healthy economy, positive growth expectations Flat curve: Uncertainty, transition period Inverted curve (short-term > long-term): Recession signal — has preceded 8 of the last 10 US recessions

In 2023, the 2-year/10-year spread reached −107 basis points — the deepest inversion since 1981, signaling significant recession risk.

Example

Investing in US Treasuries from Europe:

European investor Elena wants to add US Treasuries to her portfolio. She has EUR 50,000 to allocate.

Option 1 — Treasury ETF (unhedged): iShares USD Treasury Bond 7-10yr UCITS ETF (IDTM)

• Listed on Xetra, priced in EUR
• YTM: ~4.3%
• TER: 0.07%
• Currency exposure: Yes (EUR/USD)
• Effective yield for Elena depends on EUR/USD movements

Option 2 — Treasury ETF (EUR hedged): iShares USD Treasury Bond 7-10yr UCITS ETF EUR Hedged

• Eliminates EUR/USD risk
• Hedging cost: ~2.0-2.5% (interest rate differential between USD and EUR)
• Effective yield: ~2.0% (4.3% − 2.3% hedging cost)
• Suitable when EUR is expected to strengthen vs USD

Option 3 — Short-duration T-Bills: iShares USD Treasury Bond 0-1yr UCITS ETF

• YTM: ~4.8%
• Duration: 0.4 years (minimal interest rate risk)
• Currency risk: Yes, but lower duration means less total volatility

Historical context — the 2022 bond crash:

For European investors, currency movements significantly affected total returns. The dollar's 2022 rally partially cushioned bond losses. The 2023 dollar decline amplified them.

The 10-year Treasury as global benchmark:

The 10-year yield (US10Y) influences:

• Mortgage rates globally (US 30Y mortgage = US10Y + spread)
• Equity valuations (higher US10Y → lower stock P/E ratios)
• Emerging market borrowing costs (EM spreads over Treasuries)
• Corporate bond pricing (spread over Treasuries)

When US10Y crossed 5% in October 2023, global equity markets sold off sharply — demonstrating the benchmark's influence.

Why It Matters

The risk-free rate

In financial theory, Treasuries define the "risk-free rate" — the return available without credit risk. Every asset in the world is priced relative to this rate:

• Stock required return = Risk-free rate + Equity risk premium
• Corporate bond yield = Risk-free rate + Credit spread
• Mortgage rate = Risk-free rate + MBS spread + Bank margin

Safe haven during crises

In every major financial crisis, investors flee to Treasuries:

This "flight to safety" is the most reliable pattern in finance — when everything else falls, Treasuries rise.

Federal Reserve policy transmission

The Fed controls short-term rates directly (fed funds rate). Long-term Treasury yields reflect the market's expectations of future Fed policy, inflation, and growth. The relationship between Fed actions and Treasury yields is the primary channel through which monetary policy affects the economy.

Foreign reserve holdings

Central banks worldwide hold ~$7.4 trillion in US Treasuries as foreign exchange reserves. Japan ($1.1T), China ($0.8T), and the UK ($0.7T) are the largest foreign holders. This demand keeps yields lower than they would otherwise be and reinforces the dollar's reserve currency status.

Risks and Pitfalls

Interest rate risk (duration)

Long-term T-bonds can lose 15-20% in a single year during rate hikes. The 2022 calendar year saw the worst Treasury returns since 1788 — a startling statistic for a "safe" asset. Safety refers to credit risk (zero default probability), not price stability.

Inflation erosion

A nominal T-bond paying 4% is worthless in real terms when inflation is 6%. Negative real yields persisted through much of 2020-2022. TIPS (Treasury Inflation-Protected Securities) solve this problem but have lower nominal yields.

Currency risk for non-US investors

For European investors, the total return from Treasuries = bond return + EUR/USD change. In 2022, USD strength added ~6% to European investors' returns. In 2023, USD weakness subtracted ~3%. Currency hedging eliminates this but costs the interest rate differential (2-3% in 2024).

Fiscal sustainability concerns

With US federal debt exceeding $33 trillion and annual deficits of $1.5-2 trillion, long-term Treasury sustainability is questioned. Fitch downgraded the US from AAA to AA+ in 2023. While a US default remains nearly inconceivable, the premium investors demand may gradually increase.

Opportunity cost in rising rate environments

Holding long-duration T-bonds during rising rate cycles means accepting losses while short-term instruments offer higher yields. The inverted yield curve (short rates > long rates) creates a paradox where the "safest" long-term asset underperforms cash.

FAQ

How can I buy US Treasury bonds from Poland?

Through UCITS-compliant Treasury ETFs on European exchanges (Xetra, Euronext) via Polish brokers (XTB, mBank, Bossa) or international brokers (Interactive Brokers, DEGIRO). Direct purchase of individual T-bonds requires a US brokerage account.

Should I hedge the currency risk?

It depends on your view and horizon. If you believe USD will strengthen (or want pure bond exposure), buy unhedged. If you want to isolate bond returns, buy EUR-hedged. Note: hedging costs ~2-3% annually (2024-2025), making hedged Treasuries less attractive than European government bonds.

Are Treasuries really "risk-free"?

From a credit perspective — effectively yes. The US has never defaulted on its debt and can print dollars to service it. From a market price perspective — absolutely not. T-bonds can lose 15-20% in a year. "Risk-free" refers specifically to default risk, not price volatility.

T-bonds vs European government bonds — which should I hold?

European investors should consider both. German Bunds offer EUR-denominated safety without currency risk. Treasuries offer higher yields and USD diversification. A balanced approach might be 60% European bonds + 40% Treasuries (hedged or unhedged based on your USD view).

Related Articles

• Yield — understanding bond returns and yield curves
• Green Bond — environmentally-focused government bonds
• Risk Parity — how Treasuries fit into balanced portfolios
• See the full financial dictionary for more terms