Loan Payment Options. Please include your Sacramento Credit Union Member Number and Loan Identification number when making payments.The first step is to get in touch with your lender or loan servicer. You can find their contact information on your monthly statements. To help you manage your loans easily and efficiently, all the forms you might need are here in one place. A payoff letter provides instructions on how to pay off a loan with a lump sum before the loan term ends. Learn how payoff letters work. Sacramento Credit Union offers various online forms and downloads to sign up for new services and access helpful information. Access our digital library. The mortgage payoff calculator helps you find out.