What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
If I understand correctly, you want to have an additional 3% charge for the payment in this form (http://www.jotform.com/60957484185165)? If yes, then I believe you can use the Tax option to have an additional 3% charge on the payment. Simply follow the steps below.
1. Open the payment wizard on your form builder.
2. Click next until you get to the "Other Options"
3. Select Tax and add a base rate of 3%
4. Save and Finish the setup of the payment wizard.
Here are several guides that can help you get started.
If you need further assistance, please let us know.