Monroe County, Florida infrastructure sales tax bonds affirmed at AA by Fitch

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Monroe County bonds affirmed AA

Highlights

Fitch affirmed Monroe County, Florida's series 2025 infrastructure sales surtax revenue bonds at 'AA', citing an 'aa' revenue risk and resilience assessment.
Maximum annual debt service coverage stands at 2.8x, with stressed MADS coverage of 1.8x under a 10% revenue decline scenario, reflecting manageable leverage and risk.
Future rating actions depend on maintaining combined MADS coverage above 1.8x, while an upgrade would require sustained coverage above 2.2x and improved leverage expectations.

Rating rationale and coverage metrics

As reported by Fitch Ratings, the 'AA' affirmation on Monroe County, Florida's series 2025 infrastructure sales surtax revenue bonds reflects an overall 'aa' revenue risk assessment and an 'aa' resilience assessment under its U.S. public finance dedicated tax and revenue bond criteria.

Fitch says the pledged revenue base is broad and is expected to grow at rates between long-term inflation and U.S. GDP. Revenue sensitivity is assessed at 'a', reflecting moderate historical volatility tied in part to hurricane activity, although collections have historically recovered quickly after declines.

The resilience assessment is supported by maximum annual debt service coverage of 2.8x, including the county's subordinate-lien Cudjoe State Revolving Fund loan. Fitch says its 'aa' assessment assumes higher leverage over time and stressed MADS coverage of 1.8x under a 10% revenue stress scenario.

Tourism exposure and future rating triggers

Bond repayment comes from Monroe County's share of a one-cent infrastructure sales surtax, which is distributed by the Florida Department of Revenue among the county and the cities of Layton, Key Colony Beach, Key West and Marathon, as well as the village of Islamorada, using a population-based formula.

Voters approved an extension of the surtax in 2022 through Dec. 31, 2048, and the series 2025 bonds mature on April 1, 2048. Fitch notes the county, which includes the Florida Keys, benefits from a tourism-led economy in which Key West, Marathon and Key Largo are major destinations, while government, the U.S. Armed Services and the Monroe County School District are also significant employers.

Fitch says the bond rating is capped by the county's 'AA+' issuer default rating. Negative pressure could emerge from additional leverage or weaker pledged revenue that reduces combined senior- and subordinate-lien MADS coverage below 1.8x under Fitch's 10% stress assumption, while an upgrade would require sustained coverage above 2.2x if expectations for further leverage improve.

In our earlier article on Fitch’s BBB- rating for Hainan Rubber’s proposed subordinated perpetual sustainable securities, we explained how the notes’ junior ranking in the capital structure and coupon-deferral flexibility drive the rating outcome. We also outlined Fitch’s view of the group’s leverage and liquidity profile, along with the support considerations tied to its parent linkage and access to funding.

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