Teenagers are to decide how £20,000 of council money should be spent to best help their peers.
The Royal Borough Youth Council is to be given the power to hand out grants to projects benefiting young people.
It is to set up its own participatory budget scheme, similar to the one run by the main council.
On February 9 the cabinet participatory budget sub-committee agreed to put £10,000 towards the scheme.
And on Tuesday the council's Big Society sub-group agreed to match that with another £10,000.
Council business and communities partnership manager Harjit Hunjan said: "This will help us get more young people involved in finding out about their parish councils."
He added: "We tend to forget about young people and they have got good ideas and see things from a different perspective."
Council community partnership co-ordinator Harriet Baldwin said the scheme would also give a chance to teach the youth council about budgets and funding.
Members of the sub-group agreed it was a worthy project. Their decision will have to be rubber stamped by the main Big Society panel on March 13.
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