Add 3% Calculation to Form Total

My client is requesting that we add an option to their form to Add 3% to cover credit card fees for their non-profit donation. They use PayPal to collect payments, and I wanted to see if someone could explain to me “How To” add a calculation to the total of the form donation using a checkbox.

Please see this article for an explanation of how to do that:

Thanks Chris. I was trying to do it with calculations, and I could not get it to work. Will try out the Perks.

It can definitely work with the calculated product field adding to the form total. If you need assistance with that, I recommend contacting support and including an export of your form.

How to export a form:

Open a support ticket:
https://www.gravityforms.com/open-support-ticket/technical/

Thank you.