Note: Transaction fee varies depending on agreement with credit card processor. You will need to know the percentage and the flat fee in order to set this up correctly.
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To allow the donor to cover the cost of the transaction fee, you will need to add two fields to your form:
  1. Checkboxes
    This is where the donor/registrant will select to cover the transaction fee. To configure:
    1. From Standard Fields, drag and drop a Checkboxes Field onto the form
    2. Click the blue triangle in the top right corner to expand
    3. Under the General tab > Choices, click the minus sign to remove two of three Choices so that only one remains
    4. Update remaining Choice with desired verbiage;
      I.e., "I'd like to cover the processing fee so that 100% of my donation goes toward [organization]."
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  1. Under the Advanced tab, update Admin Field Label with desired verbiage;
    I.e., "Processing Fee Option"
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  1. ​​​​​​​​​​Product 
    This is where the transaction fee with be calculated. This article assumes you are familiar with algebraic expressions. For our example, the Product field will only display if the Checkboxes field has been marked.
    1. From Pricing Fields, drag and drop a Product Field onto the form
    2. Click the blue triangle in the top right corner to expand
    3. For Field Type, select Calculation
    4. Mark the box to Disable quantity field
    5. From the Insert Merge Tab drop-down menu, select the form field​ with the transaction amount. For our example, the field is "Donation Amount." (The Field ID number will display after the field label in the text box.)
    6. Enter an asterisk (*) to multiply this tag by your fee percentage 
    7. Put parenthesis around the equation
    8. Enter a plus sign (+) to add your flat fee
    9. Click the link below to validate the formula​
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Please note, writing formulas is out of the scope of customer support. This article is only meant to be a guide. 
  1. Under the Advanced tab, mark Enable Conditional Logic
  2. From the drop-down menus, select to Show this field if All of the following match: Processing Fee Option is I'd like to cover the processing fee so that 100% of my donation goes toward [organization].
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On the right side of the form, click Save. To preview and test, scroll to the top of the form and click Preview..