The Institute of Charity Communications is already finding it "hugely difficult" to secure essential funding to get the organisation up and running.
The admission came from Joe Saxton, one of the founding members of the planned body for the sector's communications professionals.
"Most of the funding available is not suitable for an entrepreneurial organisation that doesn't have a proven track record," said Saxton. " It's a sad reflection of the current funding regime."
He said he anticipated that the fee to join the ICC would be between £75 and £80 a year, but stressed that this figure was yet to be agreed.
The aim is for the body to eventually have a full-time, paid director.
The ICC will focus on producing best practice guidelines on issues such as how charities can best portray their beneficiaries and how to deal with celebrities.