How does PayPal work with my checking account? PayPal allows you to make purchases without revealing any personal financial information to a merchant. Your PayPal account links directly to your Alliant Checking Account. Signing up to use PayPal is free. All you need is an email address and password to get started. Then link your Alliant accounts, debit, and/or credit cards. With PayPal you make purchases using the email address and password you signed up with. Visit PayPal online for more information. Did you know? A feature of our Alliant Mobile Banking app is powered by PayPal. It’s the perfect way to instantly send money to people while you’re on-the-go. Download the Alliant Mobile Banking app either through the Apple iTunes store or Google Play. Then follow the directions provided for downloading to your smartphone or tablet.