Do you have to pay child support on a one time lump sum of money in New York?

No, New York child support is not awarded in a one time lump sum amount. Child support is paid in periodic monthly payments until the child reaches the age of 21 (age 26 if the child is still a full time student). If there is an outstanding arrearage amount then the non custodial parent will be required to pay the full arrearage amount in a one time lump sum payment.