You have a statement date and a due date. The statement date balance is what will be reported. Due date is when you have to pay the statement balance by to not get hit with interest; it's usually around 3 weeks after the statement date.What do you mean by when the bill is cut? Anyways as long as I always monitor it and make sure the percentage isn't too high everything should be good right?
Kepp in mind, you do not have to pay off any transactions made after the statement date until your next statement. So, if you have a statement balance of $300 on February 10th and then buy something for $200 on February 11th, you only have to pay $300 by your due date to not get hit with interest.