Investing / Evergreen
A bond's coupon cannot tell you its sale price
Selling before maturity introduces a price question even when the promised coupon is unchanged.
Separate fixed coupon cash flows, market yield, and an early sale's total holding-period return.
A contract and a market quote answer different questions
A fictional plain fixed-rate bond has $1,000 face value and a $40 annual coupon. Its promised coupon can remain unchanged while the market price moves. Investor.gov explains that selling before maturity can involve a discount, including when interest rates have risen since purchase. The coupon describes a contractual cash payment relative to face value. The sale price reflects what a buyer will pay for the remaining cash flows under current conditions. Credit quality, remaining maturity, liquidity, and embedded options can also affect that price.
Price a one-payment example
To keep the arithmetic transparent, suppose exactly one year remains and the bond promises a single $1,040 payment at that time: $1,000 principal plus a $40 coupon. Assume no default risk or trading costs. If buyers require a 5% one-year return, the simplified present value is $1,040 ÷ 1.05, approximately $990.48. At a required 4%, the value is $1,000. This is a single-period teaching model, not a quotation or a full price for a multi-coupon bond. Actual market conventions can include accrued interest and different settlement calculations.
Measure an early seller's result
Now consider a separate fictional holder who originally paid $1,000, received a $40 coupon during the holding period, and then sold for $970. Ignoring costs and tax, the total result is $40 + $970 − $1,000 = $10, or 1% of the initial $1,000. Quoting the 4% coupon as that investor's realized return would be wrong. If the sale price were $940 instead, the result would be a $20 loss, or −2%. Receiving income does not prevent a capital loss from outweighing it.
Holding to maturity answers only part of the risk
If a plain bond pays all promised amounts and is held to maturity, interim price changes do not force an early sale. But this does not make every risk disappear. The issuer can default, inflation can reduce purchasing power, currency can move, and coupons may be reinvested at uncertain rates. A bond fund also does not necessarily have the same end date as one individual bond. Check the instrument rather than moving casually between the two. A quoted yield to maturity depends on assumptions and conventions; it is not the same number as a coupon rate.
Build a cash-flow timeline
Write the purchase price, coupon dates, expected principal date, possible sale date, transaction costs, and currency. Calculate a hypothetical holding-period result before looking at a headline yield. Then change only the sale price to see which part of the result is uncertain. This article uses U.S. educational sources and dollars, not a recommendation to buy a government or corporate bond. Continue with the debt-maturity lesson to examine the issuer's side of the same instrument: how promised repayments can constrain a business even when its income statement appears profitable.
A global perspective
Original financial education with hypothetical examples; no personalized investment, tax, or legal advice. The named country is the example jurisdiction, not a proxy for its continent. International-framework articles name that scope explicitly.
Sources & further reading
SEC Investor.gov — Bonds: Selling before maturity ↗Sources checked Oct 18, 2026. Examples are original illustrations. No affiliation with cited organizations.
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What assumption in this guide would change the result in a different situation? Revisit the example and explain that change in your own words.
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