Every time you earn income, you'll most likely owe income taxes. How much your employer sets aside to pay on your behalf is determined by the information you submit on your Form W-4. When you have too much money withheld from your paychecks, you end up giving Uncle Sam an interest-free loan (and getting a tax refund). On the other hand, having too little withheld from your paychecks could mean an unexpected tax bill or even a penalty for underpayment. The key to paying the right amount of tax is to update your W-4 regularly.
Some life events result in more taxes, while others entitle you to credits and deductions that lower your taxes. The list of these events is long, but here are 5 of the most common reasons to revisit your W-4 withholding.