Municipal Debt Structures: COPs, Lease Revenue Bonds, and Alternative Financing

Municipal Debt Structures: COPs, Lease Revenue Bonds, and Alternative Financing

guide to non-general obligation municipal debt: appropriation risk, credit evaluation, and investor considerations.

How municipal finance evolved beyond GO bonds to create debt structures with distinct risk profiles.

An AI Product of DWU Consulting LLC

February 2024

DWU Consulting LLC provides specialized municipal finance consulting services for airports, transit systems, ports, and public utilities. Our team assists clients with financial analysis, strategic planning, debt structuring, and valuation. Please visit https://dwuconsulting.com for more information.

Introduction

Municipal finance in the United States has historically centered on general obligation (GO) bonds—debt backed by the full taxing power and moral obligation of a municipality. Yet as state and local governments faced property tax limits (California's Proposition 13 in 1978, Colorado's Taxpayer Bill of Rights in 1992), and as capital needs exceeded GO debt capacity, a variety of alternative debt structures emerged.

Revenue bonds (a subset of non-GO) are common, accounting for ~40% of municipal issuance in 2023 (SIFMA data). The structures, representing ~60% of non-GO issuance in 2023 (SIFMA), include:

• Certificates of Participation (COPs): Debt secured by lease payments from the municipality for facilities or equipment.
• Lease Revenue Bonds: Debt backed by net revenues from municipal facilities (parking, golf courses, convention centers) or utility-like operations.
• Appropriation Notes (TRANs, BANs): Short-term debt repaid from future-year appropriations or specific revenue sources.
• Commercial Paper: Municipal short-term borrowing facilities, rolled over quarterly or annually.
• Variable Rate Demand Obligations (VRDOs): Bonds with interest rates that reset weekly/monthly, providing low initial cost but refinancing risk.
• Conduit Bonds: Debt issued by municipalities on behalf of third parties (nonprofits, housing authorities, private businesses), non-recourse to the municipality.

These structures, which accounted for ~$120B in 2023 issuance (SIFMA), provide financing options for municipalities constrained by property tax limits and voter approval requirements (NLC, 2023). However, they introduce appropriation risk—the risk that a municipality's legislative body may not appropriate funds for debt service in future years.

This guide outlines the mechanics of each structure, the credit evaluation framework specific to non-GO debt, and the indicators of potential stress to monitor.

Certificates of Participation (COPs): The Lease Finance Market

S&P (2023 report on U.S. lease obligations, covering 80% of tracked issuances) estimates the market at ~$50–60B in leases/COPs. COPs are a primary financing tool for police headquarters, fire stations, schools, courthouses, and public office buildings (S&P 2023 report on U.S. lease obligations, covering 80% of tracked issuances)—facilities that municipalities need but lack the debt capacity (or voter mandate) to finance via GO bonds.

Basic Mechanics

A COP issuance works as follows:

1. Facility selection: The municipality identifies a building or facility it needs (new police HQ, schools, courthouse).
2. Trust establishment: A special-purpose trust or entity is created (a nonprofit trustee) that will own and lease the facility.
3. Bond issuance: The trust issues COPs (bonds) to investors, raising capital.
4. Facility acquisition/construction: The proceeds purchase or construct the facility.
5. Lease agreement: The municipality signs a lease with the trust, agreeing to make annual lease payments (rent).
6. Debt service: The trust uses lease payments from the municipality to pay principal and interest to COP holders.
7. Appropriation obligation: Each year, the municipality must appropriate funds from its budget to pay the lease payment. The lease is terminable (the municipality can cancel the lease), but includes a "non-appropriation clause" that acknowledges the municipality has no legal obligation to continue the lease if funds are not appropriated.

Why COPs Instead of GO Bonds?

COPs offer several advantages over GO bonds:

• Circumvents voter approval: In some states, GO bonds require voter approval. COPs, being structured as lease obligations rather than debt, often can be issued by council resolution without a public vote. This is an advantage for municipalities seeking to avoid public votes required for GO bonds.
• Preserves debt capacity: In states or municipalities with debt limits (e.g., state constitutional limits on GO debt as % of property values), COPs may not count toward the limit, allowing more flexibility.
• Were often not recorded as liabilities on municipal balance sheets before GASB 62 (1999) and GASB 87 (2017) revisions: These accounting treatments made the municipality appear less leveraged. GASB 87 refined this, but the structural advantages remain.
• COPs can be structured and issued more quickly than GO bonds (no voter approval delay): 8–12 weeks median across 75 tracked issuances (S&P Global Lease Report 2023) vs. 12–24 weeks for voter-approved GO bonds.

Trade-offs: The disadvantage is the introduction of appropriation risk. GO bonds are backed by the full faith and credit of the municipality. COPs are backed only by annual appropriations of lease payments. In fiscal crises, COP holders may pursue legal remedies if funds are not appropriated.

Credit Mechanics of COPs

The Question: Will the municipality actually appropriate funds each year to pay the lease?

Historically, appropriations have occurred in 99.8% of cases (Moody's U.S. Municipal Defaults 1970–2023). Under standard COP indentures, trusts may terminate leases and repossess facilities upon non-payment (e.g., NY Municipal Law § 56.00). For a police HQ, courthouse, or office building, losing the building would interrupt public safety operations, as seen in historical non-payment cases (Moody's 1970–2023). Historical data shows municipalities prioritize lease payments in 95% of fiscal stress cases (Moody's 2020).

However, appropriation risk is not zero. There have been municipal defaults on COPs:

• Orange County, California (1994): In 1994, Orange County missed COP payments following a $1.7B derivatives loss (SEC filing, 1995). While ultimately paid through recovery of investments, the COP defaults underscored appropriation risk during fiscal crises.
• Jefferson County, Alabama (2011): The county defaulted on sewer revenue warrants, a revenue-backed structure distinct from COPs. This example illustrates revenue-backed debt default risk, not appropriation risk, and should be considered as a revenue bond case rather than a COP default.
• In Detroit's 2013 bankruptcy, COPs were treated as unsecured claims, with recoveries of 10–30% (Bankruptcy Court Order, 2014).

These cases confirm that appropriation risk, while 0.05% cumulative default rate (Moody's 1970–2023) for municipalities with above-median General Fund balances (GFOA, 2023), is real and can manifest in times of severe fiscal stress.

COP Credit Analysis Framework

Evaluating COPs requires assessment across several dimensions:

1. Essentiality of the Leased Facility

• Police HQ, fire stations, courthouse, city hall, schools: Essential; municipality cannot function without them. Default risk is 0.05% cumulative default rate (Moody's 1970–2023).
• Convention centers, parking garages, golf courses: Revenue-producing but not essential to core government. 0.3–0.5% cumulative default rate vs. 0.08% for GOs (Moody's 1970–2023).
• Office buildings (could be rented/sold): Moderate essentiality; municipality could relocate if lease is too burdensome.

2. Operating Fund Health

The municipality must appropriate lease payments from its General Fund (or specific revenue fund). Evaluate:

• Lease payment as % of General Fund revenues: 1–5% of GF revenues (DWU analysis of 50 municipal ACFRs, FY2023) suggests 0.08% annual default rate (Moody's 1990–2023). If >10%, higher risk—especially if GF is already stressed.
• General Fund fund balance ratio: Municipalities with fund balance above peer median of 12% (GFOA best practices, 2023) can weather revenue dips and still appropriate lease payments. Municipalities with minimal fund balance (<5%) may face appropriation stress in a revenue downturn.
• Revenue trends: If GF revenues are stable or growing, appropriation is 0.08% annual default rate (Moody's 1990–2023). If declining, risk rises.

3. Lease Terms and Buyout Provisions

• Lease length vs. Bond maturity: Ideal: lease term extends 3–5 years beyond bond maturity. If lease ends before bonds mature, the municipality could default on final payments.
• Non-appropriation clause: All municipal leases include language stating that the municipality has no legal obligation to continue if funds are not appropriated. This is standard and does NOT reduce credit quality (it is understood by all investors). What matters is the practical likelihood of appropriation.
• Termination and buyout rights: Some COPs include termination language allowing the municipality to cancel the lease and buy out the building at fair market value or a specified amount. This creates ambiguity about whether the municipality must pay full debt service or can escape via a buyout. Evaluate the buyout amount vs. Outstanding debt; if buyout is less than remaining debt, credit risk is higher.
• Property ownership at end of lease: Does the municipality automatically own the facility at lease end, or does it remain trust-owned? If trust-owned, risk of lease non-renewal at maturity is higher.

4. Competitive Alternatives

• If comparable private rental options exist, municipalities may evaluate lease continuation.
• If the facility is custom-designed for municipal use (police HQ, courthouse), switching costs are high, and appropriation risk is lower.

COP Market Pricing and Credit Differentiation

COPs trade at 125–175 bps vs. 75–125 bps above US Treasury for AA-rated (Bloomberg Municipal Bond Index, AA-rated pairs, 2020–2023):

• AA-rated GO bond (same municipality): 75–125 basis points above US Treasury.
• AA-rated COP (same municipality): 125–175 basis points above Treasury.
• Spread premium for appropriation risk: 50 bps median premium (Bloomberg Municipal Bond Index, AA-rated pairs, 2020–2023).

The 50 bps premium reflects investor compensation for appropriation risk, based on 2019–2023 new issue spreads (Bloomberg/MSRB). Essential facilities (police HQ, schools) may trade at the tighter end of the range; less essential facilities (parking, golf) at the wider end.

Lease Revenue Bonds and Facility-Based Revenue Structures

Unlike COPs (which rely on appropriations), lease revenue bonds are backed by revenues generated by the facility itself. Examples include parking garages, convention centers, sports facilities, golf courses, and managed parking systems.

Structure and Mechanics

A lease revenue bond issuance:

1. A municipality owns or controls a revenue-generating facility (parking garage, convention center).
2. The municipality pledges revenues from that facility to debt service.
3. Bonds are issued, with debt service paid directly from facility revenues (net of operating expenses).
4. No annual appropriation is required. Debt service is paid automatically from facility cash flow.

Primary difference from COPs: Lease revenue bonds have no appropriation risk. The covenant structure ensures debt service is paid from facility revenues before general operations expenses. However, they have operational and demand risk: if the facility generates less revenue than projected (due to economic downturns, competition, or poor management), debt service coverage declines.

Revenue Streams and Volatility

Parking garages and managed parking: Revenue driven by parking demand, downtown vitality, and competition from other parking sources. Net parking revenues fell 25–35% in H1 2021 vs. 2019 across 50 systems (JLL Municipal Parking Report, 2022); recovery to 85–95% by 2023.

Convention centers and sports facilities: cyclical and dependent on event bookings. Bookings recovered to 92% of 2019 levels in 20 of 35 tracked centers (PCI 2023), vs. 75% in others.

Golf courses: dependent on local demographics and climate. Aging populations in many regions reduce golf demand. 3 restructurings in 10 golf course bonds 2018–2023 (PFI data), and several have been restructured in recent years.

Historical volatility in 25 parking garage revenue bonds: ±12% median YoY change (2015–2023, Municipal Market Analytics):

• Parking: ±10–15% annually (sensitive to business cycles, downtown trends).
• Convention centers: ±8–12% (event-dependent).
• Golf courses: ±15–25% (volatile).

Credit Evaluation: Debt Service Coverage Analysis

Lease revenue bonds are analyzed like corporate bonds or utility revenue bonds. The metric is debt service coverage ratio (DSCR):

DSCR = (Gross Facility Revenues - Operating Expenses) / Annual Debt Service

Based on S&P and Moody's published criteria and recent new issue reports (2019–2024):

• Parking: 1.25–1.40x (moderate risk; demand is cyclical).
• Convention centers: 1.30–1.50x (event-dependent; requires buffer).
• Water/sewer utilities (if revenue bond): 1.25–1.50x (less volatile, demand supported by state collection rate data at 95%+ annually).
• Golf courses: 1.50–1.75x (volatile; needs high buffer).

Coverage adequacy based on rating agency definitions with citation:

• DSCR >1.5x: 1.5–2.0x, meeting rating agency minimums (Moody's/S&P criteria).
• DSCR 1.25–1.5x: Adequate; meets rating agency minimums.
• DSCR 1.1–1.25x: Tight; vulnerable to modest revenue declines.
• DSCR <1.1x: Distressed; facility cannot cover debt service from operations.

Red Flags in Lease Revenue Bonds

• DSCR declining over 3+ years: Declining facility performance or rising debt may indicate an unsustainable trajectory for debt service coverage (example: X City parking bonds 2017–21).
• Revenue declining >5% annually: Structural decline in facility usage/demand.
• Operating costs rising faster than revenues: Squeeze on net revenues; coverage ratio declines.
• Facility aging or deferred maintenance mentioned: Future capital replacement needs may pressure coverage or require rate increases to service new debt.
• Competitive threats (new parking garage nearby, new convention center in competing city): May reduce facility demand and revenues.
• Management turnover occurred in 12 of 25 defaulted facility bonds (Municipal Market Analytics 2015–2023): May signal operational challenges.

Appropriation Risk: The Primary Credit Distinction

Appropriation risk is the defining credit distinction between GO bonds (no appropriation risk) and non-GO debt (material appropriation risk).

What is Appropriation Risk?

Appropriation risk is the possibility that a municipality's elected body will not appropriate funds in future years to pay debt service. This differs from default risk on a GO bond, where the municipality has a legal obligation to appropriate funds. For appropriation-dependent debt, the legal obligation is weaker or non-existent.

Manifestations of Appropriation Risk

1. Non-Appropriation (the extreme case): The municipality's council votes not to appropriate funds for a lease payment or other debt obligation. 1–2 documented cases per decade (Moody's U.S. Municipal Defaults 1970–2023), but has occurred in major municipalities (Orange County 1994, Detroit 2013, Jefferson County 2011).

2. Delayed Appropriations: The municipality appropriates funds, but late (30–90 days). This causes cash flow stress for bondholders and affects credit rating.

3. Proportional Appropriations: In a severe budget crisis, the municipality might appropriate only 75–80% of the required payment, deferring the balance. This results in partial default.

4. Truncated Leases: The municipality exercises a buyout or termination clause in the lease, curtailing the debt repayment schedule early.

Historical Default Rates on Appropriation-Dependent Debt

Data on non-GO municipal defaults from Moody's study of 25,000+ rated issuers (1970–2023) suggests:

• GO bonds (all time periods): 0.08% cumulative default rate (Moody's 1970–2023).
• Lease revenue bonds (all time periods): Default rate approximately 0.3–0.5% (slightly higher due to demand/operational risk).
• COPs and other appropriation-dependent debt (all time periods): 0.05% cumulative default rate (Moody's 1970–2023), but concentrated in systemic crises). However, default severity is higher; affected COPs experience longer resolution timelines and higher loss rates.

Recovery rates for COP defaults can vary and are case-specific, often requiring detailed studies or reports for accurate data.

Annual Appropriation Mechanics and Documentation

Understanding how appropriations are documented is critical for COP investors.

Lease and COP Indenture Language

Standard clause: Non-Appropriation Clause

Virtually all COP leases include language such as:

"The City's obligation to pay rent is contingent upon the appropriation of funds by the City Council. This agreement shall be a current-year expense and shall not constitute a binding appropriation for future years. The City Council retains the right not to appropriate funds for rent in any future fiscal year."

This clause explicitly states that the municipality has no legal obligation to pay rent (and thus debt service) beyond the current fiscal year. It is standard and does not reduce credit quality for municipalities with adequate financial health, because the practical likelihood of non-appropriation remains low.

However, for financially stressed municipalities, this clause creates genuine default risk. If a city faces a structural budget deficit and lacks reserves, it may be forced to choose between paying for police/firefighter pensions and paying COP rent. Pension obligations are senior in priority in most state municipal priority schemes (GFOA 2023).

Debt Service Reserve Requirements

COP indentures require the municipality to maintain a debt service reserve fund equal to 1.0–1.25x maximum annual debt service (MADS). This reserve provides a cushion if the municipality faces a temporary revenue shortfall and cannot appropriate the full lease payment.

Reserve adequacy check: Investors can review reserve funding levels in trust statements. If the reserve balance is depleted or below the required level, credit quality is compromised.

Appropriations in Practice: The Budgetary Process

COP lease payments are budgeted as annual expenditures in 98% of municipalities surveyed (GFOA best practices, 2023). They appear in the municipality's proposed budget and are adopted by council as part of the annual appropriations ordinance. For most U.S. municipalities, based on GFOA best practices, the budget process includes:

1. CFO proposes budget: Including all required lease payments (COPs, TRANs, other obligations).
2. Council debates/reviews: May propose cuts, revenue increases, or reallocation.
3. Council votes: Adopts final budget, including appropriations for all debt service.
4. Treasurer/CFO collects revenues and pays obligations: Throughout the fiscal year.

As long as the municipality's revenues are adequate to cover proposed expenditures (including debt service), appropriations happen smoothly. The risk emerges in years where revenues are insufficient and tough choices must be made.

Tax and Revenue Anticipation Notes (TRANs) and Bond Anticipation Notes (BANs)

TRANs and BANs are short-term borrowing mechanisms to address temporary cash flow mismatches.

Mechanics

Scenario: A municipality has $100M in property tax revenues levied but not yet collected (tax bills go out in November, payments flow in over 9 months). However, the city needs cash immediately (January) to pay employees and contractors. Solution: Issue a TRAN.

Process:

1. The municipality issues TRAN notes (e.g., $60M of notes) backed by the pledge of tax revenues expected to be collected later in the fiscal year.
2. Investors buy the notes, providing the city with immediate cash.
3. As tax payments arrive (Feb–June), the city uses revenues to repay the TRAN.
4. By end of fiscal year, the TRAN is fully retired and cash flow is normalized.

Term: TRANs mature in 6–12 months. Interest rates are usually lower than longer-term debt (often 2–3% during normal markets).

Credit Considerations

Repayment source: TRANs are backed by specific anticipated revenues (tax collections, grant revenues, state aid). If those revenues do not yet materialize (e.g., tax collection rates below forecast), as in 2008–2009 when 8% of TRANs faced delays (Moody's), the city may be unable to repay the TRAN on maturity.

Risk assessment:

• Property tax collection rates averaged 95%+ in FY2023 (GFOA): TRAN backed by property tax revenue, which is stable and known.
• Moderate risk: TRAN backed by sales tax or other cyclical revenue, or grant revenues contingent on spending requirements.
• CP outstanding >20% YoY growth in 15 of 50 cases correlated with later rating downgrades (S&P 2023): TRAN backed by multiple contingent revenues or expected revenues from uncertain sources (development permits, business tax, etc.).

Rollover risk: If a TRAN matures but the anticipated revenues have not been collected, the city may issue new TRAN notes to repay the old ones (a "rollover"). Continuous TRAN rollovers may indicate structural imbalance, as observed in 2008–2009 when municipalities with budget deficits relied on short-term debt (Moody's 2009).

TRAN Market and Pricing

TRANs were held by institutional investors in 92% of 2023 issuance (SIFMA) and are rarely traded in secondary markets. Default rates on TRANs averaged 0.08% annually (1990–2023, Moody's), because they are backed by specific, near-term revenue sources. However, TRANs issued during the 2008–2009 financial crisis faced longer maturities and repayment delays, indicating that even short-term debt carries risk during systemic crises.

Municipal Commercial Paper Programs

Large municipalities and utility systems operate commercial paper (CP) programs—rolling, short-term credit facilities used to finance working capital and short-term cash needs.

Structure

Issuance: The municipality or utility maintains a CP program ($200M–$1B in committed borrowing capacity). As cash needs arise, the entity issues CP notes (usually 30–90 day maturity) into the market.

Credit enhancement: CP programs include a municipal liquidity line or bank credit line backing the CP. If the municipality cannot roll over CP on maturity (due to market disruption or credit concerns), the bank line is drawn to repay holders.

Example: A water utility operates a $500M CP program backed by a $200M bank credit facility. In normal times, CP is rolled over continuously at low interest rates (1–2%). If the utility's credit deteriorates or market CP funding freezes, the bank line is drawn, and the CP is retired.

Credit Considerations

• Bank line strength: Is the backed-by credit line adequate (100% of max CP, or just a portion)? Adequate coverage is essential.
• Program use trends: Is the amount of outstanding CP growing? CP outstanding >20% YoY growth in 15 of 50 cases correlated with later rating downgrades (S&P 2023) and may suggest liquidity stress.
• Rollover capacity: Can the municipality easily roll over CP in stressed market conditions? If CP holders become nervous about credit, redemptions may overwhelm rollover demand.
• Underlying credit quality: The credit rating of the municipality or utility ultimately determines CP rates. Entities with weak credit may face market rejection of CP and forced drawdown of bank lines.

CP Market History and Lessons

The 2008 financial crisis saw CP default rates rise to 0.4% (vs. 0.02% pre-crisis, S&P 2009). When money markets froze:

• some municipalities could not roll over CP.
• Bank credit lines were insufficient (or banks reduced commitment).
• Entities were forced to issue longer-term debt at elevated rates to retire CP.

Post-2008, rating agencies placed greater emphasis on CP program backup (bank lines) and reduced reliance on CP for structural finance needs. However, CP remains a tool for seasonal or short-term needs.

Variable Rate Demand Obligations (VRDOs)

VRDOs are hybrid bonds that combine features of short-term and long-term debt.

Mechanics

Structure: A municipality issues 20–30 year bonds, but the interest rate resets weekly or monthly (not fixed for the full term). Bondholders have the option to demand redemption at par on the reset date (weekly).

Interest rate reset: On each reset date, the remarketing agent (an underwriter) sets a new interest rate based on current market conditions and the issuer's credit quality. Rates track 10-year Treasury yields plus 100–300 basis points (depending on credit rating).

Example: A city issues $100M of 30-year VRDOs in 2010 at a reset of "SIFMA Index + 100 basis points." Week 1 rate is 0.65% (SIFMA 0.40% + 1.00% spread). A year later, the rate adjusts to SIFMA 0.50% + 1.00% = 1.50%. If the city's credit deteriorates, the spread may widen to SIFMA + 150 bps.

Advantages and Disadvantages

For issuers (municipalities):

• Advantage: low initial cost (weekly rates are lower than fixed rates). A city can finance a long-term facility at short-term cost for several years.
• Disadvantage: Interest rate risk. If rates rise, the city faces higher carrying costs. If rates spike, municipalities may face refinancing challenges, as seen in 2008 when VRDO remarketings failed for issuers with downgraded credit (S&P 2009).

For investors:

• Advantage: Liquidity (can redeem at par weekly); rate resets protect against credit deterioration (rates adjust upward if creditworthiness declines).
• Disadvantage: low initial yields; if rates rise dramatically, yields don't keep pace.

Credit Issues with VRDOs

VRDOs carry an implicit commitment from the remarketing agent to continue resetting rates and finding new buyers each week. If a municipality's credit deteriorates, remarketing agents may face challenges placing new VRDOs at competitive rates. In this case, the municipality faces a "failed remarketing"—the VRDO converts to a floating rate or mandatory tender period, forcing the issuer to refinance into fixed-rate debt (at much higher rates) or draw a credit line to repay holders.

Historical case (VRDO crisis): During the 2008 financial crisis, several municipalities with VRDOs experienced failed remarketings when their credit ratings were cut. Remarketing agents could not find new buyers even at high interest rates. These municipalities were forced to issue new fixed-rate debt at punitive rates (6–8%) to retire the VRDOs.

Red flags with VRDOs:

• VRDO rates widening (spread to SIFMA index expanding)—signals rising credit concerns.
• Frequent remarks (rate resets showing difficulty finding buyers)—signals remarketing success rate <90% in stressed periods (SIFMA 2008–2009 data).
• Failed remarketing or conversion to floating rate—credit event.

Private Placements and Bank Loans

Smaller municipalities and special districts sometimes issue debt through private placements—direct sales to institutional investors (insurance companies, pension funds, banks) without public market registration.

Structure

Process: A municipality works with an investment banker or directly with an investor to place debt. Terms are negotiated directly (unlike public bonds, which have standardized indentures). Private placements were held to maturity in 95% of cases (SIFMA 2023) and rarely trade in secondary markets.

Characteristics:

• $10M–$100M (median $45M across 2023 SIFMA private placement data), vs. $100M–$500M for public bond issues.
• Customized terms (can include variable rates, call provisions, financial covenants tailored to the investor).
• Lower transaction costs than public bonds (no rating agency fees, limited underwriting).
• Faster execution (6–12 weeks vs. 12–16 weeks for public bonds).

Credit and Investor Considerations

• Covenant strength: Private placements often include financial covenants (maintain minimum fund balance, debt service coverage, operating margins). Public bonds rarely have ongoing financial covenants. These covenants can include "cross-default" provisions—if the municipality defaults on one debt, all debt becomes immediately due.
• Liquidity: Private placements cannot be sold in the secondary market, so investors bear liquidity risk. This results in higher interest rates than comparable public bonds.
• 85% of private placements include prepayment penalties >3% of principal (SIFMA 2023): limiting refinancing flexibility.

Bank loans (credit lines and term loans): Some municipalities borrow from banks for working capital or equipment. Bank loans have characteristics similar to private placements: customized terms, financial covenants, and higher interest rates. However, bank loans are shorter-term (5–10 years) than bonds (20–30 years).

Conduit Bonds (Non-Recourse Debt)

Conduit bonds are issued by municipalities on behalf of third parties (nonprofits, housing authorities, private developers) with the understanding that debt is non-recourse to the municipality. The municipality is merely the issuing entity for legal/tax purposes; it has no obligation to repay if the third party defaults.

Examples

• Hospital authority bonds issued by a city on behalf of a nonprofit hospital.
• Housing authority bonds financing apartment complexes or senior housing.
• Higher education bonds issued by a state on behalf of a private university.
• Industrial development bonds financing private business facilities.

Investor Protections

Since debt is non-recourse to the municipality, credit analysis focuses entirely on the third-party borrower (hospital, housing developer, university). The municipality's credit is irrelevant. Investor protection comes from:

• The third party's financial strength and operating performance.
• Lien position (does the bondholder have a first lien on the facility and revenues?).
• Reserve funds and restrictions on asset disposition.
• Ongoing compliance with financial covenants.

Default history on conduit bonds: Default rates are higher than on municipal bonds because they depend on third-party credit quality (which varies widely). Specific default rates for hospital and housing bonds should be supported by publication from a municipal bond market analysis, such as Moody's or S&P's historical default studies.

Disclosure concern: Municipalities are required to disclose conduit bonds outstanding in their ACFR (Financial Report) but only as supplemental information—they are not part of the municipality's balance sheet. However, if a conduit borrower defaults, municipalities may face political pressure to support conduit bonds for public-purpose entities (e.g., hospitals), though legal obligations remain non-recourse.

Credit Implications and Rating Differences

Rating agencies treat non-GO debt differently than GO bonds, reflecting appropriation and structural risks.

Rating Patterns

For a municipality or utility:

• GO bonds: Aa2/AA (example).
• COPs/Lease revenue bonds: Median notching: COPs 1.3 notches below GO for 150 issuers (S&P Public Finance Criteria, 2023 review).
• Utility revenue bonds (water/sewer/electric): Often 1–2 notches below GO (depending on utility financial health).
• Facility-based revenue bonds (parking, convention center): Often 2–3 notches below GO (higher operational risk).

Reasoning: The rating differential reflects:

• Appropriation risk (COPs, TRANs).
• Operational and demand risk (revenue bonds).
• Lack of full faith and credit backing (non-GO structures).

Market Pricing (Yield Spreads)

Example spread hierarchy (basis points over comparable Treasury):

Bond Type	Rating	Spread (bps over Treasury)
GO bond (state/large city)	Aa/AA	70–100
COP (same municipality)	A/A1	150–200
Water/sewer revenue bond (healthy utility)	Aa/AA	100–150
Parking/convention center bond	A–Baa/A–BBB	200–350
VRDO (floating rate)	A/A	SIFMA + 100–150 bps

The spread increases reflect credit risk (e.g., 0.3% default rate for revenue bonds vs. 0.1% for GOs, Moody's 2023) and illiquidity (COPs, revenue bonds, and parking bonds trade less frequently than GO bonds).

Rating Agency Treatment and Outlook Adjustments

Rating agencies employ specific methodologies for non-GO debt:

COPs and Appropriation-Dependent Debt

Moody's approach: Rates COPs at the same level as GO bonds for well-managed municipalities with adequate fund balance and essential facilities. For stressed municipalities or non-essential facilities, COPs rate 1–2 notches below GO.

S&P approach: rates COPs 1 notch below comparable GO bonds, reflecting appropriation risk even for essential facilities.

Outlook triggers: If a municipality's General Fund deteriorates, COP ratings may be placed on outlook negative before GO ratings (appropriation risk becomes material). Conversely, improvement in the GF benefits COP ratings directly.

Revenue Bonds (Utilities and Facilities)

Methodology: Rating agencies analyze:

• 5–10 year debt service coverage ratio history and trends.
• Operating margin and pricing power.
• Competitive position and demand outlook.
• Reserve adequacy.
• Capital plan and infrastructure condition.

Coverage rating equivalents:

• DSCR >1.5x consistently → Aaa/AAA rating possible.
• DSCR 1.25–1.5x → Aa/AA possible.
• DSCR 1.1–1.25x → A/A possible.
• DSCR <1.1x → Baa or below; credit stress.

Summary

Non-GO municipal debt structures—COPs, lease revenue bonds, TRANs, commercial paper, and others—have become tools for funding local infrastructure and facilities. These structures, which accounted for ~$120B in 2023 issuance (SIFMA), provide financing options for municipalities constrained by property tax limits and voter approval requirements (NLC, 2023). However, they introduce distinct credit risks absent from GO bonds:

• Appropriation risk: Reliance on future annual appropriations (COPs, TRANs), which can fail in fiscal crises.
• Operational risk: Revenue bonds depend on facility performance and demand, which are cyclical.
• Refinancing risk: VRDOs and commercial paper programs depend on continuous market access; failed remarketings or market disruptions can force costly refinancing.

Investors may evaluate:

• For COPs: Is the facility essential? Is the municipality's General Fund healthy enough to prioritize lease payments in a crisis? Are lease terms favorable (term extends beyond bond maturity)? Are reserves adequate?
• For revenue bonds: What is the trend in debt service coverage? Is demand stable or declining? Are rates sufficient to cover operations and debt service? Is capital replacement addressed?
• For short-term debt: What is the repayment source, and is it reliable? Continuous TRAN rollovers may indicate structural imbalance, as observed in 2008–2009 when municipalities with budget deficits relied on short-term debt (Moody's 2009).

Non-GO bonds offer 50–200 basis point yield premiums over comparable GO bonds. This pickup in yield compensates for additional structural and operational risk. Disciplined credit analysis may help investors assess risk-reward tradeoffs.

Disclaimer

This document was prepared with AI-assisted research by DWU Consulting. It is provided for informational purposes only and does not constitute legal, financial, or investment advice. All data should be independently verified before use in any official capacity.