The Gift Aid working party is expected to include the Charity Tax Group, Acevo, the Charities Aid Foundation, the Charity Finance Directors Group, the Institute of Fundraising, the NCVO and Philanthropy UK.
The groups decided to work together in a meeting to discuss general tax issues across the sector, which was held on 13 June.
"We are keen to draw up a list of options each organisation can include in any individual consultations they undertake," said Helen Donoghue, director of the Charity Tax Group. "We will share the results so that we can identify the issues of major concern. There is clearly a lot of common ground."
The consultation, which was originally announced in the Budget, was launched yesterday by Ed Miliband, the third sector minister, and Stephen Timms, chief secretary to the Treasury.