A coupon payment is the periodic interest a bond issuer pays you for lending it money, calculated by multiplying the bond’s face value by its stated interest rate. On a typical $1,000 bond with a 5% coupon rate, that comes to $50 a year, usually split into two $25 payments six months apart. The name is a holdover from the days when bonds were paper certificates with tear-off tabs you redeemed for cash. The certificates are gone; the math and the terminology stayed.
How the Payment Is Calculated
The formula is simple. Take the bond’s par value, which is almost always $1,000 for corporate and Treasury bonds, multiply by the annual coupon rate, and divide by the number of payments per year. A 5% coupon on a $1,000 bond produces $50 in annual interest. Paid semi-annually, that is $25 twice a year. The amount stays fixed for the life of a standard bond, no matter what the bond trades for on the secondary market.
Par value is the anchor, not the market price. Buy the same bond at $950 or $1,050, and the coupon is still based on the $1,000 face value. That is why your actual yield, the return relative to what you paid, drifts away from the stated coupon rate whenever you buy above or below par.
Most U.S. Treasury notes and bonds pay interest semi-annually, as required by federal regulation. Corporate bonds generally do the same, though some pay monthly or quarterly. The bond’s indenture, the legal agreement between issuer and bondholder, spells out the exact dates.
When the Coupon Isn’t Fixed
Not every bond locks in one rate for life. Two common variants change the payment on a set pattern.
Floating-rate notes tie the coupon to a benchmark interest rate, typically the Secured Overnight Financing Rate (SOFR), plus a fixed spread. Each period, the coupon resets to the benchmark’s current level. If SOFR rises, your next payment rises. If SOFR falls, so does your payment. That protects you against rising rates but makes your income stream less predictable.
Step-up bonds follow a schedule of scheduled rate increases. A bond might pay 3% for three years, 4% for the next three, then 5% until maturity. The schedule is set at issuance, so there is no guesswork. Issuers use step-ups to compensate investors for committing money over a longer horizon.
Who Actually Receives Each Payment
Two dates decide who gets a given coupon:
- The record date is the cutoff for being listed as the bond’s owner. If your name is on the books that day, the payment is yours.
- The ex-date is usually one business day before the record date. Buy on or after the ex-date and the seller keeps the upcoming payment.
Since the U.S. securities market moved to T+1 settlement in May 2024, trades settle one business day after execution. To be the owner of record on the record date, you need to buy at least two business days ahead.
Once you own the bond, modern brokerage accounts collect coupons automatically. The cash lands in your account on the scheduled date, ready to spend, reinvest, or withdraw.
Accrued Interest at Settlement
Bonds rarely trade exactly on a payment date, so when you buy between coupons you owe the seller for the interest they earned during the days they held the bond since the last payment. That amount, called accrued interest, gets added to the purchase price at settlement.
Say a $1,000 bond with a 6% coupon pays $30 every six months. If the seller held the bond for 120 of the 180 days in the current period, you owe them $20 in accrued interest (120/180 × $30). When the full $30 coupon arrives, $20 of it is really a reimbursement for what you already paid the seller.
The tax treatment tracks the cash. Your brokerage will report the full coupon on Form 1099-INT, but you can subtract the accrued interest you paid to the seller so you are only taxed on what you actually earned. The IRS instructs you to list the full amount on Schedule B, then enter “Accrued Interest” as a subtraction below the total.
Bonds That Pay No Coupon
Some bonds pay no periodic interest at all. Zero-coupon bonds are sold at a steep discount to face value, and your return comes entirely from the gap between what you paid and the amount you receive at maturity. You might pay $600 for a bond that returns $1,000 in 15 years.
There is a tax catch. Even though no cash arrives until maturity, the IRS requires holders to report a share of the built-in gain each year. The legal term is original issue discount, and under 26 U.S.C. § 1272, you must include it in gross income annually using a constant-yield calculation. Your brokerage reports the amount on Form 1099-OID. That is why many investors hold zero-coupon bonds in IRAs or 401(k)s, where the annual accrual does not trigger a current tax bill.
How Coupon Payments Are Taxed
Federal law treats bond interest as ordinary income. Under 26 U.S.C. § 61, gross income includes interest from all sources, which covers every standard coupon payment you receive. For 2026, that income is taxed at the same rates as wages, from 10% to 37% depending on your total taxable income.
Your brokerage reports interest to you and to the IRS on Form 1099-INT, issued early in the year for the prior year’s income. You owe tax on the interest even if the payments were automatically reinvested rather than withdrawn. If you fail to give your brokerage a valid taxpayer identification number, the firm is required to withhold 24% of your interest payments and send it to the IRS as backup withholding.
Municipal Bond Interest
Interest from bonds issued by state and local governments is generally exempt from federal income tax under 26 U.S.C. § 103. Buy a bond issued by your own state and the interest is often exempt from state income tax as well. Bonds from a different state usually remain subject to your state’s income tax.
The exemption does not cover every municipal bond. Private activity bonds that fail to meet the tax code’s qualification requirements lose their exempt status, as do arbitrage bonds where the issuer reinvests proceeds at a higher yield than the bond’s rate. Most municipal bonds you will see through a standard brokerage qualify, but confirm the tax status before buying.
What Happens If the Issuer Misses a Payment
A missed coupon does not immediately trigger a default. Most corporate bond indentures include a grace period, typically 30 days, during which the issuer can pay and avoid formal default. If the grace period expires without payment, the bond is in default, which can accelerate repayment of the entire principal and open the door to bondholder lawsuits or bankruptcy proceedings.
Treasury bonds carry essentially no default risk because the federal government has taxing authority to back its obligations. Corporate bonds are a different story, and the credit rating on a bond drives the coupon rate the issuer has to offer. A financially shaky company might need to pay 8% to attract buyers while a Treasury of the same maturity pays 4%. That premium is the price of accepting the risk that a coupon payment does not arrive on time.