Deep Discount vs Premium Trade-offs
Deep Discount vs Premium Trade-offs
A bond bought at a 20% discount isn't automatically better than one at par. Tax treatment and reinvestment risk differ.
Key takeaways
- Discount bonds (trading below par) lock in capital gains if held to maturity; premium bonds lock in capital losses
- The tax treatment of that gain or loss varies by bond type (Treasury, corporate, municipal)
- Discount bonds have higher reinvestment risk because more of the return comes from price appreciation at maturity
- Premium bonds face call risk: if rates fall, the issuer calls the bond and the bondholder misses the further price gains
- Choosing between discount and premium depends on your tax situation, holding period, and credit outlook
Discount bonds: buying at less than par
A bond trading at $800 (when face value is $1,000) is at a 20% discount. If you hold it to maturity, you get $1,000 back, locking in a $200 gain plus the coupons received.
Example: A Treasury bond bought at $900, coupon 3%, maturity 5 years.
- Cash in: $900
- Coupons: $30 per year × 5 years = $150
- Principal return: $1,000
- Total inflow: $1,150
- Gain: $1,150 − $900 = $250 (mostly from the discount, plus some from coupons)
The discount bond's return is boosted by the price appreciation at maturity.
Premium bonds: buying at more than par
A bond trading at $1,100 is at a 10% premium. If you hold it to maturity, you'll receive $1,000 principal — a $100 loss — plus the coupons.
Example: A Treasury bond bought at $1,100, coupon 5%, maturity 5 years.
- Cash in: $1,100
- Coupons: $50 per year × 5 years = $250
- Principal return: $1,000
- Total inflow: $1,250
- Gain: $1,250 − $1,100 = $150 (the coupons exceed the principal loss)
The premium bond's yield is somewhat lower due to the principal loss at maturity, but the higher coupon may make up for it.
Tax treatment: discount bonds
For Treasury discount bonds, the gain on the discount is taxed as ordinary income at maturity, not as a capital gain. This is unfavorable: you pay tax at ordinary rates (up to 37% federal) rather than capital-gains rates (up to 20% federal).
Example:
- Buy a Treasury at $900, sell (or hold to maturity) at $1,000, for a $100 gain.
- Tax on gain: 37% federal (if high earner) = $37.
- After-tax gain: $63.
For corporate discount bonds, the gain is a capital gain if held longer than one year, taxed at preferential rates (15% or 20%). This is more favorable.
For municipal discount bonds, the gain is a capital gain for tax purposes, but the interest component is still exempt from federal tax. This creates ambiguity: the bond might be issued at a discount, and the discount accrual (phantom income) might be taxed, or it might not (depending on whether it was issued before/after 1993). Consult a tax professional for municipal discount bonds.
Tax treatment: premium bonds
Premium bonds have a tax advantage in the U.S.: the premium can be amortized (deducted) over the bond's remaining life, reducing taxable income annually.
Example:
- Buy a Treasury at $1,100 (premium of $100), maturity 5 years.
- Annual amortization: $100 / 5 = $20 per year.
- The IRS allows you to deduct $20 annually from interest income.
- If the coupon is $50, your taxable income is $50 − $20 = $30 per year.
Over 5 years, you deduct the entire $100 premium, and when you get back $1,000 principal, there's no additional capital loss (you've already deducted it).
This is beneficial in a taxable account because it defers and phases out tax liability.
Reinvestment risk
Discount bonds have higher reinvestment risk. If the bond's coupon is low and most of the return comes from price appreciation at maturity, rate fluctuations matter less, but you rely on getting that full principal back.
Premium bonds have lower reinvestment risk because the coupon is higher. You're earning a robust coupon that reinvests, even if rates change. But you absorb the principal loss at maturity, and the higher coupon means higher reinvestment risk in the traditional sense (coupons reinvested at lower rates if rates fall).
Example:
- Discount bond: $900 cost, $30 annual coupon, $1,000 maturity. You're betting the issuer doesn't default and rates don't affect the outcome (you hold to maturity).
- Premium bond: $1,100 cost, $50 annual coupon, $1,000 maturity. You're earning robust coupons that reinvest, insuring against some principal loss through coupon income.
Call risk and premium bonds
A callable bond issued with a coupon of 5% when prevailing rates are 4% trades at a premium. If rates fall further, the issuer is likely to call the bond and refinance at a lower rate. The bondholder misses the further price appreciation.
Example:
- You buy a callable corporate bond at $1,050, coupon 5%, call price $1,000, maturity 10 years.
- Rates fall to 3%; the bond's theoretical price rises to $1,150.
- But the issuer calls the bond at $1,000 (the call price). You get back $1,000, not $1,150.
- You miss the $150 gain; the issuer captures it by refinancing.
Premium bonds (especially callable ones) limit upside in a falling-rate environment. This is a key risk to watch.
Discount bonds and credit risk
Discount bonds are not necessarily safer. A bond trading at a steep discount might be doing so because the issuer's credit has deteriorated. The market expects lower recovery in a default scenario.
Example: A corporate bond trading at $600 (40% discount) might be there because the issuer is close to bankruptcy. You're not buying a bargain; you're buying a distressed asset with high default probability.
Conversely, a discount bond might simply be old (issued at high coupon when rates were higher), and current conditions have moved on. A 30-year Treasury issued in 2010 at 4% coupon is now trading at a discount because current rates are higher. This is safe credit risk (it's the U.S. government) but interest-rate risk.
Choosing between discount and premium
| Factor | Discount Bond | Premium Bond |
|---|---|---|
| Initial cash outlay | Lower ($900) | Higher ($1,100) |
| Coupon | Low (3%) | High (5%) |
| Tax on gain (taxable bonds) | Capital gain (favorable for corporates) | Amortization deduction (favorable) |
| Reinvestment risk | Lower coupon, more reinvestment risk | Higher coupon, less reinvestment risk |
| Call risk | Lower (less likely to be called) | Higher (likely to be called if rates fall) |
| Best for | Investors who expect rates to rise; non-call bonds | Income-seeking investors; premium amortization benefit |
Decision flowchart
Example: buying deeply discounted bonds
Scenario: A 10-year corporate bond (BBB-rated) is trading at $700 (30% discount). Coupon 3%, face value $1,000.
- Your required yield: 7% (appropriate for BBB credit).
- Price: $700 is consistent with a 7% yield on a 3% coupon.
- If you hold to maturity and there's no default: you gain $300 + $300 in coupons = $600 total return over 10 years, or roughly 6.9% annualized after accounting for the capital gain timing.
- But default risk on BBB: ~1–2% per year over 10 years, so cumulative ~10–15%.
The discount compensates you for default risk. You're not buying cheap; you're buying risky and being compensated.
Tax-loss harvesting with discount/premium bonds
If you buy a bond at a premium and interest rates rise, the bond's price falls below your purchase price. You can sell at a loss and harvest the tax loss (offsetting capital gains or $3,000 of ordinary income per year). This is valuable in taxable accounts.
Similarly, if you bought a discount bond and rates fell, it rises above par. You can sell for a gain, harvest it against other losses, or let it ride to maturity for the embedded capital gain.
Summary: the discount-premium choice
Neither discount nor premium bonds are universally better. Discounts appeal to those who believe rates will rise (or who hold bonds where credit is improving). Premiums appeal to income investors and those in high tax brackets (for amortization benefit). Call risk matters for premiums in a falling-rate environment.
The decision depends on your tax situation, expectations for rates, and whether the bond is callable. Run the numbers, then decide.
Related concepts
Next
Discount bonds can trigger complex tax scenarios, especially when issued at a discount by the original issuer. Original Issue Discount (OID) creates "phantom income" that you must declare for tax purposes even if you don't receive the cash. The next article decodes OID tax mechanics.