Metrolinx announced on August 11, 2026 that the projected total cost of Toronto’s Ontario Line rapid‑transit project has risen to $34 billion, a figure more than three times the amount originally forecast.
The Ontario Line is a subway‑style rail corridor planned to run through the city, intended to expand transit capacity and connect key neighbourhoods. The project was first introduced several years ago as part of the province’s broader transportation strategy.
The latest cost projection reflects a substantial increase from the initial estimate, although the exact original figure was not disclosed. Metrolinx said the revised budget accounts for a range of factors that have emerged since the line’s inception, but did not provide detailed breakdowns in the release.
The higher budget places the Ontario Line among the most expensive infrastructure undertakings in the province’s recent history. Officials have indicated that the line will continue to move forward under the new financial parameters, with construction timelines and service commencement dates yet to be confirmed.
Stakeholders and the public will be monitoring the development closely as the project progresses, given its significance for Toronto’s transit network and the scale of the investment required to complete it.