coupon rate
Coupon Rate is the fixed interest a bond promises to pay each year, calculated on its face value, not on whatever price you actually paid for it.
In plain English
Here is the surprising part. A coupon rate can stay completely still while the money it produces changes value in your pocket every single day. That sounds like a contradiction, but it is exactly how bonds work, and once you see it, you will never look at a bond advert the same way again.
Say the Federal Government of Nigeria issues a bond with a face value of ₦1,000,000 and a coupon rate of 12 percent. That rate is fixed at birth. It does not care if you bought the bond on day one at ₦1,000,000 or bought it two years later from someone else at ₦950,000 because interest rates in the market had moved. Either way, the bond still pays out ₦120,000 a year, because the coupon rate is calculated on the original face value, never on the price you paid.
This is why the name matters. It comes from the old paper bond certificates that actually had little coupons attached at the edges, which you would cut off and present to collect your interest, like tearing a ticket stub. Nobody cuts paper coupons anymore, but the word stuck, and the idea behind it stuck even harder.
Think about a Nigerian civil servant in Abuja who buys a savings bond paying a 13 percent coupon, and compare her to a nephew in Manchester who buys a UK gilt paying 4 percent. Both amounts feel fixed and reliable to each holder, but what changes is what that fixed amount is actually worth if market interest rates rise or fall after purchase. The coupon never moves. Everything around it does.
For someone sending money home to invest in a family bond arrangement, this is the number to ask about first, because it tells you exactly what cash arrives every year, long before anyone starts talking about bond prices or yields.
A ₦2,000,000 bond with a coupon rate of 10 percent pays ₦200,000 every year until maturity, no matter whether the bond's market price later rises to ₦2,100,000 or falls to ₦1,900,000.
Questions people ask
Is coupon rate the same as the interest I actually earn on my money?
Not quite. The coupon rate is fixed on the face value, but your actual return, called the yield, depends on the price you paid. If you bought below face value, your real return is higher than the coupon rate, and if you paid above face value, your real return is lower.
Can a coupon rate change after the bond is issued?
No, for a standard fixed rate bond, the coupon rate never changes for the life of the bond. Some special bonds have floating rates that adjust with a benchmark, but those are clearly labelled as such, not the ordinary fixed coupon type.
Why would anyone buy a bond with a low coupon rate?
Usually because it is being sold at a discount to face value, which pushes up the real return, or because the issuer is seen as extremely safe, so investors accept less interest in exchange for peace of mind.
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