Child support and spousal support are handled in Family Court. You can also call the NYS Child Support Helpline at 888-208-4485 ( TTY : 866-875-9975) or email your local Child Support Office if you have any questions.The amount you get depends on what the father's income is, what your income is, how many children you have together, and what your children's basic needs are. How do I apply for Child Support Services? You can complete the application at your local CSS office or apply online. This page will help you calculate the figures a New York judge would consider in determining how much should be paid in maintenance and child support. The Certificate of Service is filed with the Civil Filing Department (832 E. Fourth St., Room 3725). This calculator determines the value of child support to be paid based on income, days the children spend in your custody, and other child-related expenses. One of the most commonly required forms is the Affidavit of Financial Standing or Financial Affidavit.