Use these instructions to complete the ACH Enrollment Form to receive Supplier reimbursements via direct deposit. Returned Check Policy.We will cover how to properly fill out an ACH form and how to submit the additional information required. 221481181 is a routing number used for SUFFOLK FEDERAL CREDIT UN in NY. This routing number supports ACH and Wire transfers. The first step in using an ACH authorization form is to request this form from your bank or financial institution. You can enroll in STAR Credit Direct Deposit using your bank's ninedigit routing number and your bank account number (up to 17 characters). A bank letter is an official document from your bank that provides important information about your business' official bank account. Learn how to send and receive domestic and international wire transfers at Teachers Federal Credit Union. Set up recurring wire agreements and more. With Locations in Nassau, Suffolk, Queens, Brooklyn and Manhattan, 1N Wants to be Your Bank.