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.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

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.


  • Profile Image

    How can I use coupons on custom payments?

    Asked by IAPT on June 30, 2016 at 07:37 AM

    How can I use coupons on custom payments?



    This is a re-post of a comment on Mastering Payment Form Integrations with JotForm

    custom payments use how can i coupons
  • Profile Image
    JotForm Support

    Answered by Boris on June 30, 2016 at 09:14 AM

    When using a custom amount payment option, coupons are no longer available. This is because in this option, you should calculate the total price to charge the users:

    https://www.jotform.com/help/259-How-to-perform-calculation-in-the-form

    https://www.jotform.com/help/275-How-to-pass-a-calculation-to-a-payment-field

    Using actual coupons is limited to selling products or subscriptions, and they are not avaialble for custom amount option or for donations:

    https://www.jotform.com/help/233-How-To-Add-Coupon-Code-in-the-Payment-Form

    So if you want to have a custom amount payment option, and you would like to have something like a coupon code, you will need to calculate it based on other form fields on your form. You could use a regular Text Box field to collect coupons from your users, and some conditional logic to calculate the total price based on whether they have entered a valid coupon.

    Let me build a demo form for you with such an approach, and I'll get back to you soon with more details. Thank you.

  • Profile Image
    JotForm Support

    Answered by Boris on June 30, 2016 at 09:29 AM

    Here is a demo form that you can take a look, whether this is what you were looking for:

    https://www.jotformpro.com/form/61813317449963

    The example coupon is "boris", and it will reduce the total price by 20%.

    The way the form is set up is as follows:

    1. We have added a Number field, named "Coupon multiplier".

    This field should be hidden (gear-shaped icon > Hide Field), and its Default Value should be set to 1:

    2. We have added a Text Box field where your users will be entering their coupon:

    3. We should edit your existing calculation for the "Total Payment", and wrap the entire calculation inside brackets. Then, we will multiply the entire bracket with the "Coupon multiplier" field:

    Simply put, when a coupon is not valid, the price will remain as it was (it is multiplied with 1).

    4. Finally, we use conditional logic to create the coupons. We will use the insert/calculate conditions, and set them as follows:

    If we want to apply a 20% discount, we will be using a value of 0.80 as the multiplier. If we want to apply a 30% discount, we would use 0.70 as the multiplier.

    You can set up such conditions for each of the coupons you want to use. Please try it out, and let us know should you need any further assistance.