1. Washington State Disbursement Unit (SDU)
Centralized payment processing center for all Washington child support payments. Handles receiving, recording, and distributing support payments to custodial parents statewide. Paying dads can mail a check, pay online, or set up automatic withholding; receiving parents can track deposits. Include case number and Social Security number on every payment. No in-person intake; manage account online 24/7 or call during business hours for payment history and dispute help.
1-800-922-4306 · P.O. Box 45868, Olympia, WA 98504