Authorize.Net Integration: How to add convenience fee to the total amount?

Hi we are interested in using Jotform to integrate with authorize.net for our organization. Is it possible for our customers to enter the amount they are trying to pay, and have the system automatically add a convenience fee? I couldn't see that in the authorize.net form widget.

thank you

Mark

If you would like to add the 2.9% + 30¢ convenience fee to the total amount, this might be possible with extra calculation fields.

For example, add two Form Calculation widget fields:

For the 2.9% + 30¢ fee, the formula is the following:

(field+0.30)/0.971

See this stackoverflow thread for details.

The calculation field can be hidden.

Then, in the Authorize.Net payment field use the option to 'Get Price From':

Here is a demo form:

https://form.jotform.com/93287508267973