Arrow International has given $400, matching the amounts put in by the association and polytechnic management.
The company's support was "fantastic", association co-presidents Meegan Cloughley and Ryan Ward said yesterday.
"It does mean we can offer more subsidised trips. We had a pretty limited budget before," Mr Ward said.
The scheme, designed to help students, especially young women, get home safely during Orientation, began yesterday and will run until the early hours of March 7.
Vouchers enable them to travel from central Dunedin or Orientation events to their own residences for a maximum of $3.
The remainder of the fare, up to $17 a trip, will be subsidised.
Arrow had a strong relationship with the polytechnic and was involved in two large construction projects on campus at present, project manager Brian Shea said yesterday.
"Our construction sites are an inconvenience to students and their flexibility and understanding has been outstanding, so it is nice to be able to give something back."
Although not all students were aware of the scheme yet, initial support was positive, Ms Cloughley and Mr Ward said.
Association staff were spreading the word among students applying for their identification cards.
Several students queuing yesterday said the scheme was a great idea.
Some, including Stephanie McNeill (19), of Mosgiel, were also getting taxi vouchers.
Ms McNeill it would be good to be able to take a taxi home to Mosgiel, if necessary.
"I'll still have to pay a bit, but it's better than paying 50 bucks."
Patrick Bishop (20), of Dunedin, said he usually walked home after a night out but might use a taxi because it was subsidised.
"I usually feel pretty safe if I'm walking in the [North Dunedin] student area. But I don't feel so safe walking in other parts of the city."
The Otago University Students Association is not offering a subsidised taxi scheme.
President Edwin Darlow could not be reached for comment yesterday.