Get your taxes done using TurboTax

This is only present once you're completely finished with your tax information and are on the final Review process.  What the OP is referring to, and what TT *used* to have, was a real-time estimation of your tax refund (or taxes owed) that updated as you went along.  It was one of the very few things that I truly liked about TT, in spite of their many horrible design decisions otherwise.  Now they've changed/eliminated that feature that clearly the vast majority of their user base liked and wanted to keep seeing.  It's like they actively wish to drive their customers to competing products.