Stocks, bonds & funds
Why a bond is worth less when rates rise, in one calculation
A bond market value calculator: clients enter face value, coupon, maturity, payment frequency and the current market rate to see the price, premium or discount and current yield.
Included on every plan, even the free Practitioner plan. No card needed.
How do you calculate a bond's market value?
Discount each remaining coupon payment and the face value at the current market rate, then add them up. When market rates are above the coupon rate, the bond sells at a discount; when below, at a premium. A $1,000 bond paying 5% is worth less than $1,000 when new bonds pay 6%.
When interest rates move and statements show bond losses
Clients who think of bonds as safe are surprised when statements show losses after rate increases. Others considering selling a bond before maturity want to know what they'd get. Both search for a plain explanation.
What the client types into a search box
“why did my bonds lose value”
How a client works through it
Enter face value and coupon
Par value and the bond's coupon rate.
Enter maturity and frequency
Years remaining and payments per year.
Enter the market rate
Today's yield on comparable bonds.
See the price
Market value, premium or discount, coupon income and current yield.
What lands in your inbox
When a client asks your firm to review the result, the request arrives as a contact record with their inputs and results attached, by email and, on paid plans, by webhook to your CRM.
Received
Face value, coupon, maturity and market rate show the bond's terms and the client's question. A large discount suggests a client worried about losses or considering a sale. Long maturities indicate interest-rate exposure worth reviewing.
Premium, discount and current yield
Market Value is the price at today's rate; Price (% of Par) expresses it as a percentage of face value. Premium / Discount shows the difference from par. Annual Coupon Income stays fixed regardless of price.
Current Yield divides annual coupon income by market value, a quick income measure, but not the same as yield to maturity.
Results shown: Market Value · Premium / Discount · Annual Coupon Income · Current Yield · Price (% of Par).
Coupon income on a $1,000 bond
A $1,000 bond with a 5% coupon pays $50 a year, or $25 twice a year if semiannual. If market rates rise above 5%, its price falls below $1,000 so that a buyer earns the market rate overall.
How does a bond calculator help advisory clients?
It explains interest-rate risk better than any paragraph. Clients who understand why prices move are less likely to sell at the wrong time and more open to discussions about duration and laddering.
For CPA firms, premium and discount have tax implications for amortization and gains.
Follow-ups this request opens
- Review duration and interest-rate risk in the portfolio
- Build a bond ladder matched to cash needs
- Decide whether to hold to maturity or sell
- Consider tax effects of premium or discount
What this calculator leaves out
- Plain fixed-coupon bonds only; no call features.
- Accrued interest is ignored.
- Credit risk and default are not modeled.
- Taxes are not included.
Platform disclaimer shown under the calculator: Estimates only. Prices a plain-vanilla bond by discounting its coupons and face value; it ignores accrued interest, call features, credit risk and taxes.
Compliance note for firms
Pricing illustrations should not be presented as quotes or recommendations to buy or sell specific bonds. Broker-dealer representatives should follow FINRA rules for communications; advisers should keep the tool educational.
Not legal advice. See our disclaimer and the guide to compliance for client calculators.
Terms your client sees in the calculator
These definitions appear in the calculator's collapsible Definitions block, so clients don't have to call to ask what a label means.
- Market value
- What a bond would sell for today: the present value of its remaining coupon payments plus the present value of its face value, both discounted at the current market rate. This calculator prices a plain bond and ignores accrued interest, call features, credit risk and taxes, so a quoted price can differ.
- Face (par) value
- The amount the issuer repays at maturity, usually $1,000 per bond. Coupon payments are calculated as a percentage of it. A bond priced at par sells for exactly its face value; the market value in this calculator is compared with par to show whether the bond trades at a premium or discount.
- Coupon rate
- The bond’s stated annual interest rate, applied to face value. A $1,000 bond with a 5% coupon pays $50 a year, split across the payment periods. The coupon is fixed when the bond is issued and does not change with market rates, which is why the bond’s price moves instead.
- Yield to maturity (market rate)
- The annual return an investor would earn by buying the bond at its current price and holding it to maturity, assuming coupons are reinvested at the same rate. This calculator uses the yield that comparable bonds offer as the discount rate. When it is higher than the coupon rate, the bond’s price falls below par.
- Premium / discount
- The difference between the bond’s market value and its face value. A positive figure is a premium, which happens when the coupon rate exceeds the market rate; a negative figure is a discount, when the coupon is below the market rate. Either gap shrinks toward zero as maturity approaches.
- Current yield
- Annual coupon income divided by the bond’s market value. It shows the cash income return at today’s price but ignores the gain or loss as the price converges to par at maturity. For a discount bond, current yield is below yield to maturity; for a premium bond, it is above.
In our glossary: Present value
Market Value of Bonds calculator: questions from firms and clients
Why do bond prices fall when rates rise?
Because new bonds pay more, so existing lower-coupon bonds must sell for less to compete.
Do I lose money if I hold to maturity?
Not if the issuer pays; you receive face value at maturity.
What is current yield?
Annual coupon divided by price, not the same as yield to maturity.
Does it handle callable bonds?
No, plain bonds only.
What about bond funds?
Funds don't mature, so price changes work differently over time.
Are taxes included?
No. Municipal bonds may be tax-free; see the muni yield calculator.
Does it include accrued interest?
No.
Which plan includes it?
Every plan, including the free Practitioner plan, which runs up to 5 calculators at once alongside the other investment tools. Firm (up to 50) and Network (no cap) add webhooks and white-label. See pricing.
No question matches that filter. Clear it to see them all, search the whole site, or ask us directly; we reply within one business day.
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