Additional math in the coupon calculation

[ericcarl]

We are using a coupon code that acts as a Payment Plan option for the customer. The coupon is 50% off, then the customer pays the other 50% over several months. But since this is a payment plan we also need to add a 3% finance fee when this coupon is used.

So for example, a product may cost $1,680. The customer uses the coupon code, so now a 3% finance fee should be applied, making the total $1,740.40. Then the 50% off of the coupon is applied, so the cost of their order becomes $865.20.

Is this additional 3% calculation possible to do with the current coupon codes, or would this need to be a custom project? Thanks!

[Mail Bag]

Hello,