A friend of mine is the comptroller of a small corporation. As such, she is required to handle all aspects of that company’s finances including payroll. She takes the opportunity to figure and tweak the withholding from her own paycheck to reach her goal of neither owing taxes nor being due a refund on April 15.

She’s really smart and fortunate to be able to track this so closely. Her goal is to always come within $100 of her total tax liability after itemizing her tax return. And she does.