Coupon Rate

The annual interest a bond promises to pay, stated as a percentage of its face value rather than of the price paid for it.

Published by Quintessentia Network Inc. · Updated 17 July 2026 · Sources & disclosures

Part of the Bonds, Rates & the Economy course · Lesson 2 of 12

Formula

Annual coupon payment = Coupon rate × Face value

What it is

The coupon rate is the interest rate set on a bond when it is issued. It states how much cash the issuer has promised to pay each year, expressed as a percentage of the bond's face value (also called par value — the amount repaid at maturity). For example, a hypothetical bond with a 5% coupon rate and a $1,000 face value would pay $50 a year, commonly split into two semi-annual payments of $25. For a conventional fixed-rate bond the coupon rate never changes, no matter what later happens to the bond's market price or to interest rates generally.

Why it matters

The coupon rate is the one number on a bond that is fixed and knowable in advance, so it anchors the cash the issuer has contractually promised to pay. It is also easy to mistake for the return, which it is not. The coupon is a percentage of face value, not of the price paid: the same bond bought above or below face value produces identical cash payments while the actual yield differs. That separation is the doorway to understanding why bond prices and yields move inversely — the coupon cannot adjust when market rates change, so the price is what moves instead. A promise is not a guarantee: an issuer that defaults may pay late, pay less, or not at all.

How it's calculated

The coupon rate is not calculated by the investor — it is set by the issuer at the time of issue, written into the bond's terms, and published in the prospectus or indenture and on quote screens. Issuers typically choose a rate that lets the bond be sold near face value given market interest rates for that issuer's credit quality and maturity at that moment. To get the annual cash payment, multiply the coupon rate by the face value; divide that by the number of payments per year for the per-period amount (semi-annual is a common convention). Floating-rate notes are the exception: their coupon resets periodically against a published reference rate plus a fixed spread.

Cross-border note. Coupon mechanics are the same in both countries; the tax treatment of the interest is not. In the US, interest on many municipal bonds is exempt from federal income tax for US taxpayers. Canada has no equivalent exemption — interest from Canadian federal, provincial and municipal bonds is generally ordinary taxable income. Treatment also depends on the holder's residency and the type of account the bond is held in.

FAQ

Is the coupon rate the same as the yield?

No, and confusing the two is a common beginner error. The coupon rate is a fixed percentage of face value. Yield measures return relative to the price actually paid. A bond bought below face value carries a yield above its coupon rate; bought above face value, the yield is below it. The two match only when the bond trades exactly at par.

Why is it called a 'coupon'?

Historically, bonds were paper certificates with detachable coupons attached. The holder clipped one off on each payment date and presented it to collect the interest. Bonds are electronic now and nothing is clipped, but the name stuck as the word for the periodic interest payment.

Can a bond have a 0% coupon rate?

Yes — these are zero-coupon bonds. They make no periodic interest payments. Instead they are issued at a discount to face value and pay the full face value at maturity, so the difference between purchase price and face value takes the place of coupon cash flows.

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