Important Note on Calculator The calculator on this page is provided through the American Payroll Association and should not be used in conjunction with any other commercial website. If you are gaining access to this calculator through a website other than the National Payroll Week website, it is unauthorized use. This online calculator is designed to provide general guidance and estimates. It should not be relied upon to calculate exact taxes, payroll or other financial data. These calculators are not intended to provide tax or legal advice and do not represent any specific service or solution. You should refer to a professional advisor or accountant regarding any specific requirements or concerns.