I have charged a flat fee for a website/logo design project and would like to offer the client the ability to pay this monthly over 12 months on top of the hosting costs via client billing.
My question is with client billing do I have the ability to change the monthly cost after a set period of time?
The alternative I suppose would be to charge a smaller monthly fee for maintaining the site + the design but over a longer period of time?
Thoughts/Solutions please 