Retirement planning can feel like a long-term project you’ll “tighten up later,” until tax forms arrive and reveal what really happened last year. That’s because retirement accounts touch withholding, income thresholds, deductions, and reporting rules in ways that aren’t obvious when you’re just clicking buttons in a payroll portal. The frustrating part is that many mistakes don’t show up as a big red warning in the moment—they show up as a surprise tax bill, a missing form, or a penalty you didn’t see coming. The good news is that once you know what tends to go wrong at tax time, you can build a few habits that keep things clean all year. Here are seven common retirement planning errors that often surface when you finally sit down to file.
