I have a subscription based site where we want to offer the first month for free using a coupon code. The problem is that when you place an order with the coupon code, Magento automatically applies that coupon (so to say) to every subsequent billing month.
Does anyone know which files would control this so that I can change this behavior?
Another solution may be to use the trial period feature, however this won't let you use 0 as a price and also charges tax on the full amount even if set to $0.01.
Any help or suggestions would be greatly appreciated!