Oops I was thinking late pick ups!
Late payment....I ask that they pay in the morning. If they forget it's not a big deal as long as they pay at pick up. I used to have a mom get paid same days as me and she went to the bank on her lunch break. It was fine by me because she discussed it with me ahead of time. Currently, all parents pay the day before or in the morning...with the odd forgetful moment so it's at pickup. If they don't pay for the next 2 weeks AT ALL than there is no late fee, there is just flat out no care!! They can't come back until it's paid and if they do this twice, they are asked to find another daycare provider. My income is already inconsistent, I'm not willing to take on a client and than wonder payday to payday if they're going to pay. Too stressful! If they leave without paying or making a payment plan (I require a months notice) than I'd consider taking them to small claims for breach of contract.
I've never had someone late with payment because it's very clear and very firm in my contract.