The calculator gives an annual child support estimate. Orders are paid weekly, biweekly, monthly, or bimonthly.A calculator for determining temporary maintenance and child support payments in New York State. Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below. If there is spousal support being paid, the Calculator will automatically include it as income for the payee and deduct the same amount from the payor's income. Both parents' incomes are used to figure out how much child support the father has to pay because both parents have to support their children. If you are going through a divorce in New York, one question you may be asking is how to calculate alimony. Can you afford spousal support? Our calculator helps calculate what amount you'll be paying your ex-spouse, including child support payments and alimony.