MBTA commercial paper notes receive A-1+ rating ahead of liquidity facility change

MBTA commercial paper notes receive A-1+ rating ahead of liquidity facility change
MBTA notes rated A-1+

The Massachusetts Bay Transportation Authority is preparing to replace the bank liquidity facility backing part of its commercial paper program later this month. The change covers $75 million of series C notes and $75 million of series D notes, with the new support scheduled to take effect on June 24, 2026, when the existing facilities expire.

Highlights

  • S&P Global Ratings assigned its 'A-1+' short-term rating to MBTA's $75 million series C and $75 million series D commercial paper notes.
  • The rating action follows the agency's substitution of its bank liquidity facility, effective June 24, 2026, when the current facilities expire.
  • The update reinforces MBTA's short-term market access for this segment of its borrowing program and reflects continued reliance on sales tax bond anticipation notes.

Rating action tied to June 24 facility switch

S&P Global Ratings said it assigned its 'A-1+' short-term rating to the Massachusetts Bay Transportation Authority's commercial paper sales tax bond anticipation notes as the agency substitutes its bank liquidity facility for the existing series C and D commercial paper notes.

The rating applies to $75 million of series C notes and $75 million of series D notes. The substitution is scheduled to go into effect on June 24, 2026, the same day the current facilities expire.

Implications for MBTA financing operations

The rating action supports MBTA's short-term market access for this portion of its borrowing program and reflects the authority's continued use of commercial paper backed by sales tax bond anticipation notes.

S&P Global Ratings announced the action on June 4, 2026, from Dallas. The update focuses specifically on the short-term notes linked to the liquidity facility replacement rather than a broader change to the transit authority's overall credit profile.

Our earlier update on Paragon Mortgages (No. 12) highlighted rating upgrades on the class B and class C notes, driven by stronger counterparty support and improving arrears in the underlying UK buy-to-let mortgage pool. We also outlined how structural features such as the move to sequential amortisation and reliance on a first loss fund can influence note performance and future rating sensitivity.

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