Cognito-forms – Calculate Discount Based on Total

I am a developer for Cognito Forms.

The example you included was from this blog post on three ways to implement discounts in Cognito Forms.

The syntax for the discount calculation would be:

=CouponCode = "CODE1" ? 0.15 : CouponCode = "CODE2" ? 0.25 : 0

The syntax is a bit cryptic (used by JavaScript and other C languages), but generally it is:

[condition] ? [true result] : [false result]

But you can chain them together indefinitely like:

[condition 1] ? [true result 1] : [condition 2] ? [true result 2] : [condition 3] ? [true result 3] : [false result]

The full documentation for calculations can be found on the Cognito Forms help site.

Applying discounts in Cognito Forms is both easy and powerful. The key is to use the Price field to calculate negative prices based on form selections.

To start with, check out this great blog post describing three easy ways to create discounts on payment forms. Then use a calculation like the following to apply your discount via the Price field:

=if TotalBeforeDiscount > 80 then -0.15 * TotalBeforeDiscount else
 if TotalBeforeDiscount > 40 then -0.10 * TotalBeforeDiscount else
 if TotalBeforeDiscount > 20 then -0.05 * TotalBeforeDiscount else 0

In this case, TotalBeforeDiscount is a Calculation field that you create to subtotal the form prior to applying the discount.