Overview of debt investments

Debt investments represent financial instruments that establish a creditor relationship between the investor and the issuing entity - the investor lends funds to another party and expects to receive periodic interest payments and repayment of principal at maturity (debt securities under ASC 320).

Unlike equity investments - which under ASC 321 are generally measured at fair value through net income, with no available-for-sale option - debt investments do not provide ownership rights or control. Instead, they provide contractual cash flows, making them generally more predictable.

Common examples of debt investments include:

• Corporate bonds
• Government securities (e.g., treasuries)
• Notes or certificates meeting the debt security definition

ASC 320 applies to debt securities (including securitized loans that are securities), but excludes most trade receivables and non‑security loans.

Key characteristics of debt securities

Debt securities share several important characteristics that distinguish them from equity investments.

• Fixed or determinable payments
  Investors receive interest income based on a stated or effective interest rate.

• Maturity date
  Debt securities have a specified date at which the principal is repaid.

• No ownership rights
  Investors do not participate in the management or profits of the issuing entity.

• Priority over equity
  In liquidation, debt holders are paid before equity holders.

Classification of debt investments

Under US GAAP, debt investments are classified into three categories:

• Trading securities
• Available-for-sale (AFS) securities
• Held-to-maturity (HTM) securities

These three categories (trading, AFS, HTM) are the US GAAP model under ASC 320. IFRS 9 classifies debt instruments differently, using its own set of categories. Don’t mix the two frameworks on the exam.

Decision framework for classification

Core principle (ASC 320-10-25): every debt security must be classified into one of three categories at acquisition, based on management’s intent and, for HTM, its ability to hold the security to maturity. Classification is reassessed at each reporting date. Transfers between categories are allowed but are accounted for at fair value, and transfers into or out of trading should be rare. Selling or transferring an HTM security before maturity (outside narrow exceptions) “taints” the HTM portfolio and calls into question the company’s intent to hold its remaining HTM securities to maturity.

1. Intent for short-term profit? → Trading

   ↓ No

2. Intent + ability to hold to maturity? → HTM

   ↓ No

3. Default category → AFS

Common pitfall: a security that fails the HTM test (missing either the intent or the ability to hold to maturity) does not default to trading - it defaults to AFS, the residual category.

Example: classifying a corporate bond

Quality Corp purchases a $50,000 corporate bond. Management does not intend to sell it for short-term profit, and Quality Corp has both the intent and the financial ability to hold the bond until it matures in five years.

• Step 1: Is the intent short-term profit? No.
• Step 2: Does management have both intent and ability to hold to maturity? Yes.
• Classification: held-to-maturity (HTM)
• Measurement consequence: the bond is reported at amortized cost, and unrealized gains/losses are not recognized (only credit losses via the CECL allowance).

Answer: HTM; measured at amortized cost.

Measurement overview under US GAAP

All debt securities are initially recorded at their purchase price (fair value at acquisition), with transaction costs capitalized for AFS and HTM securities and expensed for trading securities.

Subsequent measurement depends on classification:

Classification	Measurement	Unrealized gains/losses
Trading	Fair value	Net income
AFS	Fair value	OCI (noncredit portion); credit losses to income (ASC 326‑30)
HTM	Amortized cost	Not recognized (credit losses via CECL allowance, ASC 326)

The next chapters walk through each classification - trading, HTM, and AFS - in detail, including how amortized cost and fair-value adjustments are calculated for each.