Most of the time, child support is paid every month, usually on the first day of the month. It is possible for child support to be paid in a single lump sum, but this is very rare. Payors can be required to pay by giving the recipient a series of post-dated cheques. However child support gets paid, it's important for the payor to keep a record of how much was paid and when it was paid, perhaps from receipts provided by the recipient, from cancelled cheques , or from bank statements. This can help prevent arguments about whether a payment was late or missed altogether.