I use a simple excel doc to track it.. tried setting up mint but I feel better manually entering info so I can confirm everything that I buy and spend. I do use ynab for general finances, so I just set a monthly budget for MS cost (~80) and enter only the fees as transactions there. I'm sure theres a better way to do it, but I'm worried if I'm not 'hands on' entering the info, I'll lose track of a reload