Optional add-on each membership level

Hello,

I was wondering whether it is possible offer a check box on each membership level that allows members to add an additional 13% for administrative fees if they feel so inclined. It’s a non-profit and the membership fee is essentially a donation, the 13% we want to be completely optional and all in one form. I understand I could have two links, but we want to streamline the process and once the click sign up and fill in their information the option is at the bottom with the paypal button.

For our payment structure right now we’re using the Pro forms with Paypal express.

Any guidance would be greatly appreciated!
Thanks
SC

Thanks for your inquiry. ~ We appreciate your patience :-)

No. I’m sorry but this is not possible without modifications. You could start by creating a custom Pro Form Template and then integrating some PHP code that modifies the pricing dynamically. Please see: Knowledge Base » s2Member® Pro Forms