Green CO2 has launched an integrated tax-efficient green travel scheme in partnership with First Group, Halfords and Countrywide Asset Management.
The salary sacrifice product enables employers to offer staff low-emission cars, bicycles and a bespoke bus service.
Through tax relief and a reduction in national insurance contributions, employees can potentially save up to 35% on the lease of a car and up to 50% off travel by bus or the hire of a bicycle.
Staff can gain more by taking advantage of the government's car scrappage scheme, introduced in May.
David Collett, chief executive officer of Green CO2, said: "Employers, employees and the environment all stand to gain."