Not necessarily per-capita, but on a per-rider basis the 905 definitely has to spend more. The sum of it may be less than what Toronto pays simply because on a total basis it has more people riding the system and a bigger population so naturally it's going to be bigger and have more money being spent on it but proportionately it could be smaller than what a Regional municipality has to spend when you break it down by how much of a subsidy is required to provide the service for each transit user.
In 2014 the TTC had a $0.78 subsidy per rider (
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Compared to YRT which is apparently $4.49 per rider (
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But on a total subsidy basis the total subsidy given to Toronto was: $534m (
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YRT's total subsidy was only: $93m (
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So Toronto is spending more in total subsidies but on a per capita basis let's take a look:
YRT pop: 1.033 million (2011)
Toronto pop: 2.615 million (2011)
York Region: 93/1.033 = $90 per person
Toronto: 534/2.615 = $204 per person
Thus Toronto spends more per capita, but York Region spends more per transit rider.