I do have a daily rate fee which is in both of their contracts- I gave them the flat monthly fee verbally because they both used to pay every 2 weeks but felt the monthly fee was more convenient. I think I should stay quiet for now, until I get a new dck or 2, then I'd feel more comfortable bringing it up. They've both been with me for over a year and I really like the kids. I've had issues with one dc dad not paying on time, but I had him sign a contract about that recently. I've already changed my contract to include calculating the # of days for any new parent paying monthly. If I do start getting bitter- I may bring it up in a couple of months.