Perpetual bond


A perpetual bond, also known colloquially as a perpetual or perp, is a bond with no maturity date, therefore allowing it to be treated as equity, not as debt. Issuers pay coupons on perpetual bonds forever, and they do not have to redeem the principal. Perpetual bond cash flows are, therefore, those of a perpetuity.

Perpetual bonds vs. equity

  • Although similar to equity, perpetual bonds do not have attached votes and, therefore, provide no means of control over the issuer.
  • Perpetual bonds are still fixed-income securities; therefore, paying coupons is mandatory whereas paying dividends on equity is discretionary.

Examples

Pricing

Perpetual bonds are valued using the formula:
where:
  • is an annual coupon interest on a bond.
  • is an expected yield for maximum term available.