AC Payroll #1 Online Payroll Solution We are the most Affordable, Cost effective, Easy to use, and Accurate Online Payroll Service for Small to Medium Size Businesses. Period! AC Payroll is an online payroll service you can trust. Saves you Money and Time. We stay up to date on changing tax laws so you don’t have to. With our Full Service Payroll Option, we will make tax deposit payments on your behalf, and file the periodic Payroll Tax Returns - 941, 940, W-2, State Returns, etc, for you. Other ways we have your back are: FREE Payroll Setup 90-DAY Money Back Guarantee FREE PERSONAL - Federal and State, TAX RETURN PREPARATION for OWNERS, if Owners qualify INTEGRATES with your Accounting System