STSPRO supports nearly all of the IRS and state forms and schedules allowed for e-file. Further our software offers you the ability to view the worksheets. STSPRO at stspros.com collects information through inputs to the tax return by the tax preparer. The program will then put that information on the correct IRS tax form and e-file it directly with the IRS and the state. There may be some rare circumstances where you may not be able to e-file the federal income tax return or state income tax return.