To check the balance of your Amazon gift card online, you must first sign into your Amazon account. Once logged in, go to "Your Account" and click on "Gift. Log into your account and from the homepage, hover over Accounts & Lists, then click "Your Account." Click "Your Account" from the account menu. Check to see if you're eligible with our link below! Table of Contents. How do I know if I'm targeted? What is the Amazon Gift Card.