It's possible. When you qualify for the Earned Income Credit (EIC), the credit goes up as you earn more money, but only to a point. Once you start to earn too much for the credit, it eventually drops to zero. TurboTax determines the amount of your credit based on the information you enter when preparing your return.
Please see the FAQ below for more information about how the Earned Income Credit affects your refund.
https://ttlc.intuit.com/replies/5259706
