Do you need a “paycheck checkup” to make sure you’re having the right amount of tax taken out of your paycheck? The Tax Cuts and Jobs Act can affect how much tax employers should withhold from employees’ paychecks. To help you figure out the right amount, the IRS has a withholding calculator and a new series of Tax Tips and YouTube videos to check your 2018 tax withholding and estimate your 2018 income tax. Find these features at IRS.gov. Using the calculator, you can determine if you need to adjust your withholding and submit a new Form W-4 to your employer.