How to have Inventory and Payment JotForm

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    Asked on January 20, 2015 at 05:55 PM

    Hello JotForm Crew!

    I am trying to create a simple form so that parents can register one or more children for a special event.

    This event happens at 4 specific dates and each date has 24 spots available. From previous years we know that parents will register multiple children (siblings) for a date (so using submission restriction won't work because 1 submission could have multiple individuals on it). So I have tried using "Appointment Slots" and "Inventory" - but I can't get either of those to work with the "Calculation Wizard" (am I wrong that PayPal custom payments only works with Calculation Wizard?)

    I would also like the form to calculate the total number of students registered (example 2) and then send that to paypal so they can pay the required fee (2 students x$30 = $60). 

    I have been working with the Calculation Wizard, put when I ask paypal to collect Custom payment amounts, it lets the individual decide the fee number, so there is no guarantee they will input $30. 

    Does this all make sense? Essentially I am looking for a simple solution to to multiple registrations attached with a fee, showing the remaining spots/inventory so we don't over-book.

    I shared the form with you to help you understand - right now I have multiple widgets in place - I realize some will have to change/be deleted - this is just me trying to figure things out!

    Any help would be appreciated.


  • Profile Image
    Answered on January 20, 2015 at 07:54 PM


    You can easily achieve this using the Inventory Widget.

    Check it here

    The widget have both inventory and payment option as well, so it should fits your requirement.

    Here is demo jotform you can try

    Hope this help. Let us know if you need further assistance.

    Thank you.





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    Answered on January 21, 2015 at 06:10 PM

    Hello again - 


    I guess I am just confused on how to use inventory then. 

    I currently have the Inventory Widget on my form, but don't see a place to add payment or prices or a grand total. The example shows that I can input how many of a product I want and then auto calculates a total at the bottom.

    Any help would be appreciated!



  • Profile Image
    Answered on January 21, 2015 at 07:48 PM


    Thank you for providing more details.

    Please test my demo jotform

    Here are some steps how I updated your jotform




    the result is like this


    I suggest cloning my demo form also -How-to-Clone-an-Existing-Form-from-a-URL

    so that you can review it on your Form Builder.


    Hope this help. Let me know if you need further assistance.




  • Profile Image
    Answered on January 22, 2015 at 04:32 PM

    Hello again - 

    I think I got it! 

    I wasn't able to clone your form (perhaps because of the 'pro' designation). But I was able to follow your steps. The weird thing is I can't see the auto calculation while I am working in the "edit form" mode, but when I go to the URL (now and pretend to be a parent filling out the registration, it works like a charm, and redirects me to Paypal with the correct dollar amount! 

    Super helpful - THANKS!

  • Profile Image
    Answered on January 22, 2015 at 06:09 PM

    I am very glad to see the workaround provided by Jonathan worked like a charm and that you are very happy with the results.

    Do not hesitate to contact us anytime!

  • Profile Image
    Answered on January 11, 2017 at 12:27 PM

    I need help with this.  I can't see the calculations behind your form.

  • Profile Image
    Answered on January 11, 2017 at 02:10 PM

    @ses1913 You can clone the demo form to your own account for further inspection:

    If you have any questions about one of your own forms, please create a new thread letting us know which form you are working on as well as what you are having trouble with and we will be happy to help: