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.

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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.

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    My form isn't calculating subtotal or requiring payment.

    Asked by sthomay on December 29, 2016 at 05:08 PM

    Here's my form: https://www.jotform.us/form/63544902535154?preview=true

    I can't get it to correctly calculate the subtotal, and it needs to require a PayPal payment before it allows a form submission.  I can't even get a PayPal button to appear.  How do I do this?


    Note- PayPal is setup as a User Defined Amount, which is supposed to be grabbed from the Total Cost field. 

  • Profile Image
    JotForm Support

    Answered by Mike_G on December 29, 2016 at 09:55 PM

    I would suggest you delete the condition marked in the image below.

    Then, add a Form Calculation widget to your form and add the "Textbox Field (id76)" in the calculation area. Also, make the widget hidden on your form.

    Then, on your PayPal payment wizard, select the calculation widget as the "Get Price From".

    Then, save it and save your form after.


    I hope this helps. Let us know if you need any further assistance. Thank you.

  • Profile Image

    Answered by sthomay on December 30, 2016 at 09:35 AM

    Thanks for your help!  That worked, and it is calculating correctly in the box to PayPal, however there is no link for someone to click and pay via PayPal.  How do I add that?

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    JotForm Support

    Answered by Kiran on December 30, 2016 at 11:06 AM

    By clicking on Submit button, the form will be redirected to PayPal. Since you are using custom calculation to pass to PayPal field, the option 'Use PayPal Checkout Buttons' in the payment field settings may not work. However, you may use the following link in the Button image option of Submit button so that the image will be displayed instead of Submit button.


    Hope this information helps!