New York’s Metropolitan Transportation Authority faces potential budget gaps that could widen to nearly $900 million in 2026, according to the Citizens Budget Commission.

The nonprofit think tank that analyzes state and city finances warns in a report released Monday that the MTA’s promised cost-saving measures may fall short and revenue from yet-to-be-built casinos could be delayed. The MTA oversees the city’s subways, buses and commuter rail lines – the largest transit system in the US.