This post from last year shows exactly how to do it. Here is an excerpt:
Of Course United Way contributions are tax deductible "to the extent provided by law," and you should check with your tax guy to be certain.
The most efficient way to designate a gift to the Sigma Phi Epsilon Educational Foundation through the United Way is to designate it this way:
Sigma Phi Epsilon Educational Foundation
310 S. Boulevard
Richmond, VA 23220
Federal Tax ID: 54-6053821
The Federal Tax Identification number will be recognized and searchable nationwide.
Also, some specific local campaigns may not allow a designation to SigEp, but everyone should make the effort to ask.
This is a great way to contribute, especially for regular United Way contributors.
The Sigma Phi Epsilon is proud to be one of the numerous organizations working with and benefiting from efforts of the United Way.
Doug
Doug Scheibe, Executive Director
Sigma Phi Epsilon Educational Foundation