Choose based on your cash-flow date, not a rate forecast. A U.S. Treasury security has a stated maturity and, if you hold it to maturity, pays principal under its terms. A bond fund owns a changing portfolio and has no single date when it promises to return a fixed face value. Both can lose market value when yields rise. Match an individual Treasury to a known future spending date when principal certainty at that date matters; use a bond fund when you want diversified, ongoing exposure and accept fluctuating share prices.
This guide uses “government bonds” to mean U.S. Treasury securities. Other countries’ sovereign bonds have different guarantees, currencies and tax rules. Current yields and auction results change constantly, so check dated Treasury auction information and the chosen fund’s latest official documents before investing.
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The essential difference
| Question | Individual Treasury | Bond fund |
|---|---|---|
| What you own | One bill, note, bond, TIPS or another Treasury issue | Shares in a portfolio of bonds and other permitted debt securities |
| Maturity | A specified maturity date; Treasury bonds have 20- or 30-year terms | No single maturity date for the portfolio or your shares |
| Principal at maturity | If held to maturity, the U.S. government pays principal according to the security’s terms | No promise to repay a fixed face value on a particular date |
| Price before maturity | Can be above or below face value if sold early | Share price changes as portfolio values and market conditions change |
| Diversification | Exposure to one security unless you build a portfolio or ladder | Portfolio exposure determined by the fund’s objective and holdings |
| Cash flow | Terms are set for the issue; Treasury bonds pay interest semiannually | Distributions depend on the portfolio, income received and fund policy |
| Rate sensitivity | Generally increases with a longer maturity | Compare the fund’s current duration and holdings; these can change |
The U.S. government guarantee covers timely interest and principal at maturity, not the price you receive if you sell a Treasury beforehand. A fund that owns only government bonds can still lose money because its shares are valued at current market prices.
How changing yields move bond prices
The SEC Office of Investor Education and Advocacy states: “A fundamental principle of bond investing is that market interest rates and bond prices generally move in opposite directions.” When new bonds begin offering higher yields, an older fixed-rate bond with a lower coupon is less attractive. Its market price generally falls until its yield is competitive. When market yields fall, an older bond with a higher coupon generally becomes more valuable and its price rises.
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A bond’s yield to maturity changes when its price changes. The coupon payment on an existing fixed-rate security does not reset simply because market rates moved; the market price does the adjusting.
What the SEC illustration shows
The SEC bulletin dated June 26, 2013 uses hypothetical, not current or typical, figures. It shows a $1,000, 10-year Treasury with a 3% coupon valued at $925 one year later if the market rate rises from 3% to 4%. In a separate falling-rate illustration, the same original 3% coupon is valued at $1,082 if the market rate falls from 3% to 2%. These examples explain the direction and scale of a price response under stated assumptions; they are not forecasts, averages or expected results.
Why maturity and duration matter
Maturity is the date principal is due. Duration is a measure used to compare sensitivity to interest-rate changes. A longer maturity or duration generally means a larger price response to a given yield change. Two securities can have different maturities, coupons and durations, so comparing only their stated term can be misleading.
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Individual Treasury securities
Bills, notes and bonds
Treasury bills mature in a year or less. Treasury notes are issued with intermediate terms. Treasury bonds are long-term securities; TreasuryDirect describes 20- and 30-year Treasury bonds with a fixed interest rate set at auction and interest payments made twice a year. A specific issue’s terms establish when and how it pays.
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You can hold a Treasury to maturity or sell it earlier. Holding to maturity reduces the importance of day-to-day quoted prices for the planned cash flow, but it does not eliminate inflation risk, opportunity cost or the possibility that an emergency forces an early sale.
When a maturity date helps
Suppose tuition, a home purchase or another liability is due on a known date. A Treasury maturing near that date can make the principal schedule easier to plan. You still need to account for the security’s exact maturity, coupon dates, taxes, inflation and a cash reserve for expenses that arise earlier.
Matching maturity does not guarantee that the money will retain its purchasing power. Inflation can reduce what the returned principal buys, and locking money into a lower-yielding issue can create opportunity cost if rates later rise.
What happens if you sell early
A Treasury sold before maturity may be worth more or less than its face value. If yields have risen, the price of an existing fixed-rate issue will generally be lower; if yields have fallen, it may be higher. The government guarantee does not turn an early sale into a guaranteed $1,000 repayment or any other fixed amount.
Taxes
TreasuryDirect says Treasury-bond interest is subject to federal income tax each year and exempt from state and local income taxes. Tax treatment can differ by security, account type and investor circumstances. Compare the Treasury’s tax rules with the fund’s tax disclosures and obtain individualized advice from a qualified tax professional when needed.
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TIPS and inflation-linked cash flows
Treasury Inflation-Protected Securities (TIPS) adjust principal with changes in the Consumer Price Index. Their stated interest rate is fixed, while the dollar amount of interest changes with the adjusted principal. TIPS can be relevant when preserving inflation-linked purchasing power is a priority, but their market prices can still move before maturity. A sale before maturity can therefore produce a gain or loss even though the principal formula is inflation-linked.
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Portfolio exposure instead of one repayment date
A bond fund can hold Treasuries, other government debt or a mixture of debt securities, depending on its objective and policies. Buying a share gives you a proportional interest in the portfolio, not ownership of a particular bond that you can hold until its face value is repaid.
The portfolio continually receives interest, buys and sells securities, and replaces bonds as they mature or as the manager follows the fund’s mandate. Your shares remain exposed to the portfolio’s current market value. Even a fund holding only U.S. government securities can lose money.
Duration, holdings and distributions
Read the fund’s current prospectus and latest shareholder report. Check its stated duration, maturity distribution, government or corporate holdings, credit quality, derivatives or other permitted investments, distribution policy and expenses. A fund’s duration can change as securities mature, are sold or are replaced. Its distributions can also change as portfolio income and market conditions change.
Risks beyond rate movements
- Interest-rate risk: Longer-duration portfolios generally fall more when yields rise.
- Credit risk: A fund that owns debt other than Treasuries may face issuer default or downgrade risk. Government-heavy funds may have less credit risk but still have rate risk.
- Prepayment and reinvestment risk: If rates fall, an issuer may repay debt early. The fund may then have to reinvest at a lower yield.
- Market-value risk: You can receive less than you invested when selling shares, regardless of whether the fund’s holdings are government securities.
- Policy and tracking risk: The portfolio may not behave like a particular Treasury because its holdings, duration and mandate differ.
A decision framework for changing-yield environments
1. Start with the date you need the money
Ask whether you need a particular amount on a particular date. If yes, an individual Treasury with a maturity near that date can provide a clearer repayment schedule, provided you can hold it to maturity. If your withdrawals are ongoing or unpredictable, a fund’s continuing exposure and share liquidity may be more practical, but you must accept the then-current share price.
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2. Decide how much interim price movement you can tolerate
Neither choice is immune to rising yields. Compare the Treasury’s maturity and coupon with the fund’s current duration and holdings. A longer-duration fund can be more sensitive than a short Treasury, while a long-maturity Treasury can be more sensitive than a short-duration fund. Do not infer risk from the word “government” alone.
3. Define the cash-flow shape you want
A Treasury has stated terms. Treasury bonds pay interest semiannually, and the principal is due at maturity. A fund’s distributions depend on its structure and portfolio income; they are not the same as a fixed coupon and do not create a single principal repayment date.
4. Weigh diversification against a defined maturity
One Treasury is one security. A fund spreads exposure across the bonds permitted by its strategy, which can reduce the effect of any single holding but does not prevent losses from broad rate moves. You can also diversify individual Treasuries by building a ladder with several maturity dates, but that requires selecting and managing multiple issues.
5. Examine liquidity and the cost of an early exit
For a Treasury, estimate whether you could hold through the planned date. For a fund, assume the share value will fluctuate when you need to sell. Review the fund’s expense disclosures and any transaction or account costs that apply to your platform. Compare those with the Treasury’s terms and the practical cost of selling before maturity.
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Read the Treasury terms, the fund prospectus, the latest shareholder report and tax disclosures. Consider whether interest, distributions and gains will be taxed in your account and jurisdiction. A tax advantage in one setting can be less important than maturity fit, duration or liquidity in another.
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When each option can fit
Known spending date and principal planning
An investor saving for a known expense may prefer an individual Treasury maturing close to the spending date. The plan works only if the investor can avoid selling early and has separately covered nearer-term expenses. Inflation and reinvestment decisions still matter.
Ongoing allocation and diversification
An investor who wants a continuing bond allocation, regular portfolio maintenance and exposure to many issues may prefer a bond fund. The investor should be comfortable with changing share values and should monitor duration, holdings, expenses and distributions rather than treating the fund as a maturity-guaranteed deposit.
Several future spending dates
A maturity ladder uses multiple individual Treasuries with staggered maturities. It can align different principal amounts with different spending dates, but it requires planning and reinvestment when each rung matures. A fund may be simpler for ongoing exposure, while offering less certainty about the value available on any one date.
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TIPS may address an inflation-linked objective more directly than a conventional fixed-rate Treasury, because principal adjusts with the Consumer Price Index. A TIPS fund provides diversified exposure but still has a fluctuating share price and no single maturity date. In either case, assess the time horizon and the possibility of selling before maturity.
How to compare one Treasury with one fund
- Write the objective: Record the amount, currency, account and date when the money may be needed.
- Identify the Treasury: Note whether it is a bill, note, bond or TIPS; its coupon or stated rate; maturity date; payment schedule; and purchase price.
- Read the fund documents: Record current duration, average maturity, holdings by issuer and sector, credit quality, distribution policy and total expenses.
- Stress the rate scenario: Consider how each value could respond if yields rise or fall. Use duration as a comparison tool, not as a promise of a precise return.
- Test an early sale: Ask what happens if the money is needed months or years before the target date. A Treasury can be below face value; fund shares can also be below your purchase price.
- Review taxes: Check federal, state and local treatment, account type and the fund’s tax reporting before making a decision.
- Set a review rule: Recheck the fund’s duration and holdings and confirm that the Treasury still matches the spending date. Do not change solely because a headline predicts the next rate move.
Common mistakes and how to avoid them
- “Government” means no loss: The guarantee concerns timely principal and interest at maturity. Market prices before maturity can fall.
- “A fund can be held to maturity”: The fund owns many securities with different maturities and may sell them. Shares do not have one fixed repayment date.
- Using a rate forecast as the whole decision: Even a correct forecast may not match your cash-flow date, duration or tax situation.
- Comparing a fund’s yield with a Treasury coupon: Coupon, yield to maturity, distribution yield and total return are different measures. Compare like-for-like measures and dates.
- Ignoring duration: Two funds in the same broad category can react differently because their duration and holdings differ.
- Forgetting reinvestment risk: Falling rates can lead to early repayment of some debt and lower yields when the proceeds are reinvested.
- Putting emergency cash in a rate-sensitive asset: Money needed immediately should not depend on selling at an uncertain market price.
- Treating a hypothetical example as a prediction: The SEC’s $925 and $1,082 figures illustrate mechanics under specific assumptions, not expected market outcomes.
What to verify before acting
- The exact Treasury maturity, coupon, price and payment schedule.
- Whether the security is held in an account where the relevant tax treatment applies.
- The fund’s latest prospectus and shareholder report, including duration, holdings, expenses and distribution policy.
- Your planned spending date, emergency reserve and ability to hold through interim price changes.
- Dated current yield and auction information, since rates and fund yields change after any general comparison.
The practical choice is conditional: use a maturity-matched Treasury when a defined principal date is central and you can hold to maturity; use a bond fund when diversified, ongoing exposure is more important and you accept changing share values. Neither choice is guaranteed to outperform when yields change.
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