Welcome to the online home of Tarrant County's Credit Union. Please look around and discover all you need to know about our credit union.Be sure to have important documents ready, like driver's license and proof of income. In order to apply for an FTWCCU loan, you must qualify for membership. Fill out an online application through our secure application portal. One. Texas Trust Credit Union offers a variety of checking accounts, CDs, loans, credit cards and investment services. What to Expect When You Apply ; Document Icon. Application. Fill out our online application or apply at your local branch. Contact Unity One Credit Union. Member Contact Center: Toll Free: (800) 628-5517.