Preparing Your Tax Return(s) and Information Returns
              What are business taxes
              Estimated Taxes  
              
            Generally, sole proprietors, partners, and shareholders 
              of an S corporation pay tax on income by making regular payments 
              of estimated tax during the year. If you expect to owe taxes, including 
              self-employment tax, of $1,000 or more when you file your return, 
              you generally have to make estimated tax payments. Use Form 
              1040-ES, Estimated Tax for Individuals, 
              to figure and pay the tax. If you are not required to make estimated 
              tax payments, you may pay any tax due when you file your return. 
              For information on estimated tax, see Publication 
              505.
              Corporations. A corporation 
                must deposit the taxes it owes, including estimated tax payments 
                and any balance due shown on its tax return. Use Form 
                1120-W as a worksheet to figure 
                each required installment of estimated tax. 
            
              Important References: 
            Publication 
              583      Starting a Business and Keeping 
              Records
              Publication 
              505      Tax Withholding and Estimated 
              Tax
              Form 
              1040-ES        Estimated 
              Tax for Individuals
              Form 1040 
                              
              U.S. Individual Income Tax Return
                Form 
                1120-W          
                (Worksheet) Estimated Tax for Corporations
              Publication 
              542       Corporations