Midland pensioners may have to pay £25 a year for rail and tram travel which is currently free.
The fee is one of several emergency money-raising ideas drawn up by the passenger transport authority Centro.
Half-price fares for children could also be at risk if the pressure to deliver Government spending cuts forces Centro to make greater savings.
The authority has already reduced to £147.5 million the amount it charges West Midlands councils to run transport services.
But there are fears a cut of £4.5 million may not be high enough to satisfy council leaders, who are under pressure to slash their budgets for transport services.
Centro chief executive Geoff Inskip said savings so far had been found from efficiency programmes that would not harm services.
But Mr Inskip warned “tough” choices would have to be made if Centro was required to make more budget cuts.
Children currently travel at half price on buses, while the West Midlands provides free rail and Midland Metro travel for older people after 9.30am on top of the existing national free bus pass they already receive.
As well as considering charging £25 for an annual rail and Metro top-up, Centro could also impose charges for the first time at 41 park and ride stations in Birmingham and the region.
At the moment motorists can leave their vehicles for free at all but two of the sites while catching buses and trains.
Centro chairman Coun Angus Adams said: “These are tough financial times but I would emphasise that no cuts are planned in front-line services under the levy of £147.5 million that we are putting to members.
“However if members decide they want to see further savings then these are the only areas where we have any room for manoeuvre and reductions will result in these services being affected,” Coun Adams added.
Transport authority members will consider the 2012-13 budget at a meeting on December 12, although a final decision will not be made until February. FAMILIES are being urged to have their say on the future of school transport in Birmingham.
The city council has launched a three-month consultation to make cuts to the city’s transport budget, which stands at £16.8 million. The budget covers bus passes, minibus hire, private hire and supervision and the authority has predicted a £5 million overspend within the service by March. Areas being looked at include raising the qualifying distance from school before free bus passes are supplied to two miles for under-eights and three miles for older children. At present children aged seven and under need to be more than a mile from the school gates and those up to 11 need only be a mile-and-a-half. Council bosses are also looking at cuts in transport to faith schools.
The authority said the service was above legal requirements, was “more than generous” and its policy had not changed since 1989.
Education chief Coun Les Lawrence said: “We need to make the service more efficient and focused on opportunities for children to travel independently where possible.
“We want to hear views from as broad a range of people as possible.”
The consultation will run until March, with forums taking place on Tuesday December 6 and Wednesday December 7 with the parents and carers of youngsters with disabilities to give their views.
For details, visit www.birmingham.gov.uk/transport-consultation.