I do a weekly payment every Thursday. Thursdays seem to work great. I hold a one week deposit for all the parents.

I wouldn't do monthly because I think a large number like that can be intimidating to ask parents. Asking parents for $800-900 a month is a lot. I know I would have had a heart attack as a parent when I was using daycare if I had to pay a large lumo sum every time...especially the first month. It was hard enough for me to pay a deposit and then pay the following week again