I look after quite a few after school children. One of them is my sons friend and for about a year i have looked after him but on very few occasions. At first I didnt even bother to charge Mum because quite honestly it wasnt worth it, eg she would say can you grab him from school im late from my meeting but by the time id walked them home she would have arrived at my house. if it was a bit more i would save up a few months worth and then charge her.she happily invites my son to her house for tea etc because she likes it and it amuses her son while she tries to get on with some work. This is cool because I return the favour for her on non childminding terms. i never did a contract with her...he is 10 years old and I never had him more than 2 hours anyway. However, for the last 3 or 4 months I have been having him a lot as she is now quite busy (shes self employed) I get him from school and have him until 6, 3 or 4 days a week. For a fwe months I charged in arrears and just charged for what she used but now it seems to be more and she is actually sending me e-mails with what she needs me. In very other case I charge in advance, have a contract, charge half during holidays if they dont need me, have late payment fee, late arrival fee etc. I would like to put this in place with her now and make it a more formal arrangement but how do I charge her when she has such irregular needs? I would like a guaranteed amount per month from her and be able to put in place the holiday charge but how can i do this when it changes all the time? How should I put it to her without her feeling affronted, she is also a friend...not like a best mate but we are friends, shes quite business like herself and i am worried she will bamboozle me and i'll lose my nerve! I did ask her for payment in advance this month but she sent me an e-mail saying she would like to pay in arrears...Im pretty sure this is so she only pays for what she has used rather than what she has asked for and it ticked me off a bit that she thought she could tell me how it would be done when its my business. I am . com