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Personal Financial Planning — Part 5: Managing Investments · 1 of 10
Personal Financial Planning — Part 5: Managing Investments
finance CRITICAL

Bond Fundamentals & Strategy

bonds yield-to-maturity ratings municipal treasury convertible strategy

Key Principle

Bonds are risk-transfer instruments: you lend money in exchange for periodic interest and principal repayment. The price-yield relationship is inverse — when rates rise, bond prices fall, and vice versa. Four market segments (Treasury, agency, municipal, corporate) offer different risk-return-tax profiles, and four tactical strategies let investors position for interest rate expectations.

Why This Matters

Bond selection errors compound: buying taxable bonds in a high bracket when munis yield more after tax, holding zeros outside tax-sheltered accounts (phantom income), ignoring call provisions that cap upside, or reaching for junk yields without specialist knowledge. Each mistake costs real money over time.

Good Examples

Taxable equivalent yield. A 6% muni in the 35% bracket: 6% / (1 − 0.35) = 9.23% taxable equivalent. The higher the bracket, the stronger the muni case. (p. 421)

Four interest-rate strategies. (1) Rising rates: high coupon, short maturity. (2) Falling rates: long-term bonds. (3) Capital gains: long-term, low coupon. (4) Income: long-term, high coupon with call protection. (p. 428)

Zero coupon advantage. Zeros eliminate reinvestment risk — the compounded rate is locked in at purchase. But IRS taxes annually accrued "phantom income," so hold in tax-sheltered accounts only. (p. 421)

Counterpoints

Rating agencies failed during 2007-2009. Do not rely on ratings alone for credit assessment. (p. 423)

Convertible premiums are not free upside. The premium = market price − conversion value. You pay for the dual bond/stock feature. (p. 422)

Call provisions cap your upside. Corporate bonds often prohibit prepayment for 5-10 years, then can be called — check terms before buying. (p. 421)

Key Quotes

"The interest-on-interest component accounts for nearly 45% of total return over a 20-year period." (p. 397)

Rules of Thumb

  • Always compute taxable equivalent yield before choosing munis vs. taxable bonds (p. 421)
  • Hold zero coupon bonds in tax-sheltered accounts only (p. 421)
  • Buy only investment-grade bonds (BBB/Baa or better) unless you have specialist knowledge (p. 423)
  • Prefer intermediate-term maturities (5-10 years) for the best risk-return balance (p. 417)
  • Check call provisions before buying — callable bonds cap upside (p. 421)
  • Favor agency bonds over Treasuries for higher yield with minimal additional risk (p. 420)
  • Match bond strategy to rate outlook: short/high-coupon in rising rates, long-term in falling rates (p. 428)
Formula Calculation Use
Taxable Equivalent Yield Muni yield / (1 − Tax rate) Compare muni vs. taxable (p. 421)
Current Yield Annual coupon / Market price Quick income measure (p. 426)
YTM Approximate: (Income + (Par − Price) / Years) / ((Price + Par) / 2) Full compounded return (p. 426)
Conversion Value Conversion ratio × Stock price Assess convertible bond worth (p. 422)

Related References