We have a form that allows our clients to pay via our website. We currently use Machform and allow them to pay either with Paypal or via Stripe.
Is it possible to create a field in Machform that adds a service fee to a user entered field that the user inputs the amount they are paying in?
Invoice amount - $100.00 (amount entered by user)
Service fee - $3.20 (Automatically calculated charge card processing fee of .30 + 2.9%)
Total amount to pay - $103.20 (the above two fields added together)