Many people think their tax outcomes are established when they file their return, but most of the important steps happen much earlier. The decisions you make throughout the year affect what you owe, your cash flow, and whether you face penalties. Checking your W-2 withholding is a key way to stay on top of your taxes. This post continues our Tax Advisory Services series by looking at how withholding reviews fit into proactive planning and why this step matters long before tax season arrives.