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Corporate Bonds

Bond Indentures

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Bond Indentures

A bond indenture is the legal agreement between the issuer and bondholders defining every material term: interest rate, maturity date, collateral (if any), covenants, call provisions, defaults, and how disputes are resolved. Without an indenture, a bond is just an unsecured promise.

Key takeaways​

  • The indenture is a 50–200+ page legal document filed with the SEC; it is public for registered bonds
  • It specifies the exact coupon, payment dates, maturity, call provisions, and redemption terms
  • Covenants are restrictions on the issuer (don't exceed debt ratios, maintain minimum interest coverage, don't pledge additional collateral)
  • Breach of a covenant allows bondholders to accelerate repayment or declare the bond in default
  • A trustee (often a bank) represents bondholders' collective interests, holds collateral, and verifies covenant compliance

What an indenture contains​

A bond indenture is broken into articles covering:

1. Parties and definitions

  • The issuer, the trustee, and the note holders
  • Definitions of terms (outstanding notes, principal, interest, etc.)

2. The notes and issuance

  • Principal amount (e.g., $500M of notes)
  • Interest rate (coupon): "4.5% per annum"
  • Payment dates: "semi-annually on June 15 and December 15"
  • Maturity date: "June 15, 2055"
  • Place of payment and manner of payment (usually a designated paying agent)

3. Conditions of issuance

  • Conditions that must be satisfied before bonds are issued (legal opinions, board resolutions, financial covenants at time of issue)
  • Often requires the issuer to be investment-grade at the time of issuance (or meet specific financial tests)

4. Covenants (affirmative and negative)

  • What the issuer must do (maintain insurance, pay taxes, file financial statements)
  • What the issuer may not do (incur additional debt above limits, pledge collateral without permission, merge without consent)

5. Defaults and remedies

  • Events that constitute default (missing a coupon, breach of covenant, bankruptcy of the issuer)
  • Bondholder remedies (acceleration of maturity, seizure of collateral, litigation)

6. Modification and waiver

  • How the agreement can be amended (usually requires consent of holders of a majority of outstanding notes, sometimes supermajority for material changes)
  • Who can waive a default (again, usually majority or supermajority of noteholders)

7. Trustee duties and rights

  • The trustee verifies that the issuer is meeting financial covenants
  • The trustee can declare default and initiate remedies on behalf of all bondholders
  • The trustee is paid a fee by the issuer (a potential conflict of interest, mitigated by SEC regulations)

Financial covenants in detail​

Covenants fall into two categories: affirmative and negative.

Affirmative covenants (what the issuer must do):

  • Maintain financial records and report quarterly and annual results to the trustee
  • Maintain insurance on material assets (buildings, equipment)
  • Pay all taxes and governmental assessments on time
  • Comply with all laws and regulations
  • Maintain at least a minimum interest coverage ratio (e.g., EBITDA / interest expense ≥ 2.5x)
  • Maintain at least a maximum debt ratio (e.g., total debt / EBITDA under 3.5x)

Negative covenants (what the issuer may not do):

  • Not incur additional debt (or only up to a specified leverage limit)
  • Not pledge additional collateral to other creditors (or only within limits)
  • Not dispose of major assets (or only with bondholder consent)
  • Not make dividends or buybacks if debt ratios exceed thresholds
  • Not merge without consent (or only if the surviving entity assumes the bonds)
  • Not change the nature of the business materially

These covenants protect bondholders by constraining management decisions that might increase risk. A company can't secretly take on massive new debt, strip assets, or pay out all cash to equity holders at bondholders' expense.

Types of covenants and their strength​

Covenants vary in strictness based on credit quality and market conditions:

  • Strong covenants (typical of high-yield and weaker issuers): Tight leverage limits (under 3.5x debt/EBITDA), dividend restrictions unless leverage is below thresholds, asset sale restrictions. These protect bondholders if the company weakens
  • Moderate covenants (typical of investment-grade): Reasonable leverage limits (under 4.5x), less restrictive asset sale clauses, more flexibility on dividends if interest coverage is strong
  • Weak covenants (typical of high-quality issuers): Minimal restrictions; the issuer's creditworthiness is the main protection. Apple, Microsoft, and other AAA/AA issuers have very loose covenants because their financial strength is the guarantee

A rating downgrade often triggers covenant reviews. If a bond's issuer is downgraded from BBB to BB (high-yield), bondholders may have the right to demand redemption at par (a "put option") or to renegotiate terms.

Defaults under the indenture​

An indenture specifies events that constitute default:

  1. Payment default: Missing a coupon or principal payment by more than a specified grace period (typically 30 days)
  2. Covenant default: Violating an affirmative or negative covenant and not curing within a grace period (typically 30–90 days)
  3. Cross-default: Missing a payment on another debt obligation (e.g., a bank loan) over a threshold amount (e.g., $50M+)
  4. Bankruptcy: Filing for bankruptcy or insolvency proceedings
  5. Judgment: A court judgment against the company that is unpaid and unsatisfied for more than a specified period
  6. Liens: Becoming subject to a lien or attachment that is not released within a specified time

Once default occurs, the trustee has the right to:

  • Accelerate all outstanding principal (declare the entire bond due immediately)
  • Seize collateral (if the bond is secured) and liquidate it
  • Initiate litigation or foreclosure
  • Work with other creditors to restructure the debt or force the company into bankruptcy

Bondholders can also act collectively (holders of a majority of outstanding bonds) to amend the indenture, waive a default, or authorize the trustee to take action.

Trustee role and conflicts​

The indenture is administered by a trustee—usually a major bank (Bank of New York Mellon, U.S. Bank, Wilmington Trust). The trustee:

  • Holds the indenture and all important documents
  • Verifies that the issuer meets affirmative covenants (financial reporting, insurance, etc.)
  • Receives notice of defaults and notifies all bondholders
  • Acts on behalf of all bondholders to enforce remedies

The trustee is paid a fee by the issuer for this service, creating a potential conflict: the trustee might be reluctant to declare default if it risks alienating a major client. This was visible in pre-2008 mortgage securitizations, where trustees failed to aggressively enforce covenants against servicers.

Modern indentures have mitigated this with explicit standards (the trustee must declare default if specified conditions are met, regardless of relationship with the issuer) and SEC oversight.

Examples: What indentures specify​

Apple 4.650% Senior Unsecured Notes due 2045 (issued 2015):

  • Issuer: Apple Inc.
  • Principal: Part of a multi-tranche offering
  • Coupon: 4.650% per annum, payable semi-annually
  • Maturity: August 5, 2045
  • Collateral: Unsecured (backed only by Apple's creditworthiness)
  • Covenants: Minimal (Apple's credit is strong; investors rely on credit rating)
  • Call provision: Apple can redeem at par after specified date

Ford 6.250% Senior Unsecured Notes due 2031 (issued 2019):

  • Issuer: Ford Motor Company
  • Coupon: 6.250% per annum
  • Maturity: May 22, 2031
  • Collateral: Unsecured
  • Covenants: More restrictive than Apple's; limits on additional debt, dividend restrictions if leverage rises
  • Call provision: Ford can redeem after specified date at par + accrued interest
  • Covenant: Ford must maintain specified interest coverage ratio

JetBlue 7.500% Senior Secured Notes due 2026 (issued 2018):

  • Issuer: JetBlue Airways
  • Coupon: 7.500%
  • Maturity: 2026
  • Collateral: Secured by JetBlue's aircraft and spare parts
  • Covenants: Tight leverage limits, asset sale restrictions (can't sell aircraft without consent or replacement)
  • Trustee: U.S. Bank Trust Company (holds the lien on aircraft)
  • Default: Missing a coupon, violating leverage limits, breach of covenant triggers acceleration

The complexity and strictness of indenture terms reflects the issuer's credit quality. Ford, weaker than Apple, has tighter covenants. JetBlue, weaker still and cyclical, has the most restrictive terms and secured collateral.

Process of covenant monitoring and enforcement​

Next​

Some bonds give the issuer the right to call them early (redeem before maturity) or give bondholders the right to sell them back (put options). These embedded options change the effective duration and yield of the bond, requiring separate analysis from simple buy-and-hold bonds.