24.1 GASB Statement No. 40: Deposit and Investment Risk Disclosures

GASB Statement No. 40: Deposit and Investment Risk Disclosures

In governmental financial reporting, transparency surrounding investment risks is governed by GASB Statement No. 40, Deposit and Investment Risk Disclosures (which amended the historical disclosure standards of GASB Statement No. 3). Under GASB 40, state and local governments must disclose in the notes to their basic financial statements their formal investment policies and their specific exposure to five distinct categories of investment risk:

+---------------------------------------------------------------------------------------------------+
|                         GASB STATEMENT NO. 40 RISK DISCLOSURE MATRIX                              |
+----------------------------+----------------------------------------------------------------------+
|  RISK CATEGORY             |  STATUTORY DISCLOSURE REQUIREMENTS & MEASUREMENT METRICS             |
+----------------------------+----------------------------------------------------------------------+
|  1. CREDIT RISK            |  • Disclose credit quality ratings assigned by NRSROs (S&P, Moody's) |
|                            |  • Applies to all debt obligations, external pools, and mutual funds |
|                            |  • Explicitly identify unrated securities                            |
|                            |  • EXEMPTION: Direct obligations of the U.S. Government (Treasuries) |
+----------------------------+----------------------------------------------------------------------+
|  2. CUSTODIAL CREDIT RISK  |  • Deposits: Uninsured and uncollateralized, or collateralized with  |
|                            |    securities held by the pledging bank or its trust department      |
|                            |    NOT in the government's name.                                     |
|                            |  • Investments: Uninsured, unregistered securities held by the       |
|                            |    counterparty or its trust department NOT in the government's name.|
+----------------------------+----------------------------------------------------------------------+
|  3. CONCENTRATION OF       |  • Mandatory disclosure of any single issuer that represents 5% or   |
|     CREDIT RISK            |    more of total investments.                                        |
|                            |  • EXEMPTIONS: U.S. Treasuries, agency-backed mortgage pools, mutual |
|                            |    funds, and external investment pools (LGIPs).                     |
+----------------------------+----------------------------------------------------------------------+
|  4. INTEREST RATE RISK     |  • Disclose vulnerability to fair value losses from rising rates.     |
|                            |  • Must report using ONE of five approved disclosure methods:        |
|                            |    (1) Segmented Time Distribution (maturity buckets)                |
|                            |    (2) Specific Identification (listing individual assets)           |
|                            |    (3) Weighted Average Maturity (WAM)                               |
|                            |    (4) Duration (Macaulay or Modified Duration)                      |
|                            |    (5) Simulation Models (cash flow stress-testing)                  |
+----------------------------+----------------------------------------------------------------------+
|  5. FOREIGN CURRENCY RISK  |  • Disclose investments denominated in foreign currencies.           |
|                            |  • Report U.S. dollar equivalent fair value by currency denomination.|
+----------------------------+----------------------------------------------------------------------+

1. Credit Risk Disclosures

Governments must disclose the credit quality ratings of investments in debt securities (corporate commercial paper, municipal bonds, federal agency securities) as evaluated by Nationally Recognized Statistical Rating Organizations (NRSROs) like Standard & Poor's, Moody's Investors Service, or Fitch Ratings. If an investment is unrated (such as certain municipal obligations or local bank notes), the government must explicitly disclose that fact.

• Crucial Exam Rule: Direct obligations of the U.S. Government (U.S. Treasury Bills, Notes, and Bonds) are considered to have zero credit risk and are explicitly exempt from credit risk disclosure under GASB 40.

2. Custodial Credit Risk Disclosures

Custodial credit risk is the risk that, in the event of the failure of the counterparty or depository, the government will not be able to recover the value of its deposits, investments, or collateral securities in the possession of an outside party:

• For Deposits: Disclosure is required if bank deposits are uninsured and: (a) uncollateralized, (b) collateralized with securities held by the pledging financial institution, or (c) collateralized with securities held by the pledging financial institution's trust department or agent, but not in the government's name.
• For Investments: Disclosure is required if securities are uninsured, are not registered in the name of the government, and are held by either: (a) the counterparty (broker-dealer), or (b) the counterparty's trust department or agent, but not in the government's name.
• Best Practice Compliance: Governments that utilize independent third-party trust custodians with securities held under strict Delivery Versus Payment in the government's own legal name report zero custodial credit risk under GASB 40.

3. Concentration of Credit Risk (The 5% Threshold)

GASB 40 mandates that governments disclose by issuer and dollar amount any investment in any one issuer that represents 5% or more of total investments across the reporting entity:

• Authoritative Statutory Exemptions: Investments issued or explicitly guaranteed by the U.S. Government (U.S. Treasuries), investments in mutual funds, external investment pools (LGIPs), and other pooled investments are exempt from this 5% disclosure threshold.
• Application: If a city has a $100,000,000 total investment portfolio, and holds $8,000,000 in commercial paper issued by Johnson & Johnson, that holding represents 8% of the portfolio. The city must explicitly disclose this 8% concentration in the financial statement notes. If the city holds $40,000,000 in U.S. Treasury Notes (40%), no concentration disclosure is required because U.S. Treasuries are statutorily exempt.

4. Interest Rate Risk Disclosures

Interest rate risk represents the potential that changes in overall market interest rates will adversely affect the fair value of an investment (bond prices move inversely to interest rates). GASB 40 requires governments to disclose their exposure to interest rate risk and the specific method utilized to measure it. The government must select and consistently apply one of five approved disclosure methods:

1. Segmented Time Distribution: Grouping investment fair values into explicit maturity intervals (e.g., maturities under 6 months, 6–12 months, 1–3 years, 3–5 years).
2. Specific Identification: Listing individual securities with their specific maturities, par values, and fair values (practical only for very small portfolios).
3. Weighted Average Maturity (WAM): Calculating the weighted average number of months or years until the securities mature, weighted by the fair market value of each holding: $\text{WAM} = \sum \left( \text{Maturity Years}_i \times \frac{\text{Fair Value}_i}{\text{Total Portfolio Fair Value}} \right)$
4. Duration: A sophisticated mathematical metric expressing the sensitivity of a bond's price to interest rate changes. Macaulay Duration calculates the weighted average term to receive the present value of cash flows; Modified Duration measures the percentage change in bond fair value for a 100-basis-point (1.0%) shift in interest rates: $\% \Delta \text{Price} \approx -\text{Modified Duration} \times \Delta \text{Yield}$
5. Simulation Models: Complex financial forecasting models that stress-test portfolio cash flows and market valuations against simulated parallel and non-parallel yield curve shocks (e.g., instantaneous +200 or -200 basis point rate shifts).

5. Foreign Currency Risk Disclosures

Governments must disclose the U.S. dollar equivalent fair value of any investments denominated in foreign currencies, broken down by individual foreign currency denomination. For most state and local general governments, investment policies strictly ban non-U.S. dollar holdings, rendering this disclosure applicable primarily to large statewide public employee pension systems.

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Practical Public Finance Scenario: Investment Portfolio Compliance Audit

Scenario: The City of Silver Lake maintains a $50,000,000 total operating investment portfolio. An independent audit by a Certified Government Financial Manager (CGFM) reviews the city's investment holdings at fiscal year-end:

• Holding A: $15,000,000 in 6-month U.S. Treasury Bills (30% of total portfolio).
• Holding B: $10,000,000 in Federal National Mortgage Association (Fannie Mae) 3-year debentures, rated AA+ by S&P (20% of portfolio).
• Holding C: $4,000,000 in Prime Commercial Paper issued by Global Logistics Corp, purchased when rated A-1/P-1, but recently downgraded to A-2/P-2 by Moody's and S&P (8% of portfolio).
• Holding D: $6,000,000 in an overnight State Local Government Investment Pool (LGIP) maintaining a stable $1.00 NAV (12% of portfolio).
• Holding E: $15,000,000 in Certificates of Deposit held at First Regional Bank, where the bank pledged $10,000,000 in municipal bonds held in the bank's own internal trust vault under a safekeeping receipt issued to the city (30% of portfolio).

Professional CGFM Compliance and GASB 40 Analysis

1. Policy Violations and Credit Risk Impairment:
   • Holding C (Downgraded Commercial Paper): The investment policy requires all commercial paper to maintain top-tier ratings (A-1/P-1). The downgrade of Global Logistics Corp to A-2/P-2 constitutes an immediate policy violation. The treasurer must notify the Investment Advisory Committee and execute an orderly disposition plan to divest the holding without realizing unnecessary fire-sale losses.
2. Custodial Credit Risk Deficiencies (Holding E):
   • First Regional Bank holds $15,000,000 in city deposits. FDIC insurance covers only $250,000, leaving $14,750,000 uninsured.
   • The bank pledged only $10,000,000 in collateral against a $14,750,000 exposure, representing a massive collateral shortfall of $4,750,000 (below the 102% statutory requirement).
   • Furthermore, the collateral securities are held inside the bank's own internal trust vault rather than by an independent third-party custodian. Under GASB Statement No. 40, the entire uninsured, defectively pledged balance must be publicly flagged and disclosed in the notes as an acute Custodial Credit Risk.
3. GASB Statement No. 40 Concentration Disclosures:
   • Holding A (U.S. Treasuries - 30%): Statutorily exempt from the 5% concentration disclosure rule.
   • Holding D (State LGIP - 12%): Pooled investments and external investment pools are statutorily exempt from the 5% concentration disclosure rule.
   • Holding B (Fannie Mae - 20%): Because GSE debt is an obligation of a single corporate enterprise rather than direct U.S. Treasuries, this $10,000,000 holding represents 20% of the portfolio, far exceeding the 5% threshold. It must be explicitly disclosed by name and amount as a Concentration of Credit Risk in the notes.
   • Holding C (Global Logistics Corp - 8%): Represents 8% of the portfolio in a single corporate issuer (exceeding 5%). It must be explicitly disclosed as a Concentration of Credit Risk.