How to fill out the Payoff Request Letter Templates? Include the loan or mortgage number.Payoff Requests must be made in writing. Loan Payoff Request correspondence on SSFCU letterhead. Within 90 days of the date, you signed the court prepared Affidavit, you must complete a Texas State Certified Driving Safety Course. San Antonio, TX 78269-2408. Or Fax to (866) 493-1441. Need to make a deposit or loan payment from outside of San Antonio? Please accept this as my authorization to issue a payoff statement to. Through an effective date of .