You SHOULD charge for NSF fees on bounced cheques. First off, by the time you know the cheque is bad you have likely already offered nearly a week of care for NO payment. That means payment is technically late by 4, 5, 6 days. Second, anything YOU might have had coming out of the bank is subject to bounce if the cheque affected your balance. Third, it's a hassle to go out and visit the bank AGAIN to deposit the new cheque.

You are a business. EVERY minute you have to devote to additional business time should be paid for. If I have to make a special trip to go and deposit a replacement cheque that is 20 minutes of my time over and above daycare hours. I should be compensated for that time AND the fact that I was not paid on time.