To avoid a surprise next year, taxpayers should make changes now to their tax withholding. The Tax Withholding Estimator tool can help taxpayers determine whether their employer is withholding the right amount. Taxpayers can use the results from the Tax Withholding Estimator to complete a new Form W-4, Employee’s Withholding Certificate, and submit it to their employer as soon as possible. Withholding takes place throughout the year, so it’s better to take this step as soon as possible.

For more information, check out these withholding publications: 

• Publication 5360, Paycheck Checkup using the IRS Tax Withholding Estimator 
• Publication 5360 (sp), Paycheck Checkup using the IRS Tax Withholding Estimator (Spanish Version) 
• Publication 5640, Tax Withholding Estimator: A powerful online tool for small businesses 
• Publication 5640 (sp), Tax Withholding Estimator: A Powerful online tool for small businesses (Spanish Version)