Lump Sum Calculator
The Lump Sum Calculator is provided to assist employers in calculating child support withholding from lump sum payments (e.g., bonuses, commissions).
Please note: The calculator does not collect or transmit any data. None of your inputs are saved, so there is no security or privacy risk in using the calculator. Whenever the form is "reset," all previous input is cleared from the form.
To use the Lump Sum Calculator, you will need your copy or copies of the Income Withholding for Support (PDF) for the employee. You will also need the amount of past-due support the employee owes for each child support order. Contact the Child Support Helpline at 1-888-208-4485 (TTY: 1-866-875-9975 to get the amount(s).