Form 941 is only filed if you are a business paying employees and withholding taxes from their paychecks. It must be filed at least quarterly and sometimes more often, depending on the size of your payroll. TurboTax does not prepare form 941. QuickBooks might, if you use QuickBooks for your business. Making mistakes on form 941 can result in substantial penalties for your business and personal liability for you depending on the kind of business it is. You may want to ask a professional accountant to help you set up your business accounting and explain the payroll forms and help you through the first few quarters, or maybe even outsource your payroll to a payroll company.
