Tax preparers and IRS urges all employees, including those with other sources of income, to perform a Paycheck Checkup now. Doing a checkup will help employees make sure their employers are withholding the right amount of tax from their paychecks. Doing so now will help avoid an unexpected year-end tax bill and possibly a penalty.
The easiest way to a Paycheck Checkup is to use the Withholding Calculator on IRS.gov. Taxpayers can use the results from the Calculator to help fill out the Form W-4 and adjust their income tax withholding with their employer. Taxpayers who receive pension income can use the results from the calculator to complete a Form W-4P and give it to their payer.