A zero-coupon bond pays no periodic interest. It is sold at a discount to face value and repaid at par at maturity — the entire return is the gap between purchase price and repayment, accreting silently over the bond’s life.
How zeros work
The pricing is pure present value: a $1,000 face bond maturing in 10 years at a 5% yield sells for roughly $614 today, and the holder’s return is the climb from $614 to $1,000 — the “pull to par” concentrated into the instrument’s whole design. No coupon means no reinvestment problem (the quoted yield is locked if held to maturity), and it also means maximum rate sensitivity: with every dollar of return arriving at the end, a zero’s duration equals its maturity, making long zeros among the most rate-volatile instruments in fixed income — prized for liability matching and rate speculation, punishing in rising-rate stretches.
The tax mechanics are the advisor-relevant feature. The IRS treats the accretion as original issue discount (OID) — taxable interest income recognized annually as it accrues, even though no cash arrives until maturity. That’s the textbook case of phantom income: current tax on paper earnings — which is why taxable accounts and zeros mix poorly, and why the instruments concentrate in tax-deferred wrappers (IRAs, including self-directed accounts) and tax-exempt form (municipal zeros escape federal OID taxation). Common formats: Treasury STRIPS (coupons and principal of Treasuries separated and sold as individual zeros), corporate and municipal zeros, and savings-bond-style structures.
The concept generalizes across alternatives more than the retail instrument suggests: anything that accrues instead of paying is running zero-coupon economics. PIK loans capitalize interest the way zeros accrete discount — with the same phantom-income tax result for holders of credit partnerships — and the zero-plus-options construction inside structured notes uses a discounted zero to “protect” principal while options provide the payoff. Recognizing the pattern — return promised later, taxed or risked now — is the durable lesson the instrument teaches.
FAQ
What is a zero-coupon bond in simple terms?
A bond with no interest payments — bought at a discount (say $614), repaid at face ($1,000), with the difference as the entire return.
Why do zero-coupon bonds create phantom income?
Tax law treats each year’s accretion as interest income even though no cash is paid — you owe tax annually on money you won’t receive until maturity.
Where do zeros fit in a portfolio?
Tax-advantaged accounts (to neutralize OID), liability matching for known future needs, and rate positioning — with the caveat that long zeros are exceptionally sensitive to rate moves.
Related terms
Phantom Income · PIK (Payment-in-Kind) · Par Value · Coupon · Structured Notes
Educational content only; not investment, tax, or legal advice. Consult qualified professionals regarding your specific circumstances.
