The first of a series of meetings between Treasury officials and 16 representatives from the voluntary sector to discuss Gift Aid will be held on 8 February.
The charity representatives will return to the Treasury once every two months to discuss and give feedback on Gift Aid, a Treasury spokeswoman said.
"Several umbrella bodies are working with the Treasury to make sure that it's offering the best deal for everyone on Gift Aid reform," she said.
She said the groups would look at the technical issues and possible impact of different reform options.
In addition to the meetings, Ian Pearson, economic secretary to the Treasury, will meet representatives from Acevo, the NCVO, the Charities Aid Foundation, the Charity Finance Directors' Group, the Charity Tax Group and the Institute of Fundraising on 1 February.
"We're pleased we can meet and put our views across to Ian Pearson," said Louise Richards, director of policy and campaigns at the Institute of Fundraising. "The only worry we have is that they want a series of meetings, and we're not likely to get in many meetings before the election.
"We'd like change to happen on Gift Aid before the election. We've already been talking for a very long time."