Why is a tax refund not free money?

A tax refund means you paid more taxes during the year than you owed — essentially giving the government an interest-free loan. While receiving a large refund feels good, it means you had less money available throughout the year. Adjusting your W-4 withholding to reduce over-withholding puts more money in each paycheck, which you can direct toward savings, debt, or investing immediately rather than waiting for a refund.