501(c)(3) memberships are tax deductible so long as you receive no real value in exchange for the membership. Sorta tricky because if you are a member and attend the spring swap or summer picnic then the value of the food, portion of fees we pay for speakers and other swap expenses could be considered to have value in exchange for the membership.
We don't send out tax letters to members but do provide tax letters to donors.
I don't think an auditor will flip over a few dollars.
Our working legal address is:
North Central Pennsylvania Aquarium Reef Society, Inc.
1110 Walnut Street
Williamsport, PA 17701
All other donations to the club are tax-deductible in general. Mileage on behalf of the club, cash donations and equipment donations are always fully deductible.
Not an accountant or lawyer but that's how I understand things to be.
-Larry