Harris County Tax Office Forms ; Vehicle Registration Forms. MV-506. Pdf, Emissions - testing regulations. MV-001-A.All columns must be totaled. Provide past 2 years IRS returns and 2 most recent payroll stubs and if none, provide W-2 forms. No information is available for this page. The Harris County Clerk's office is happy to help you file documents or locate records, but we cannot answer legal questions. Complete the Schedule D Tax Worksheet in the instructions. Don't complete lines 21 and 22 below. This form must be completed and submitted when an original petition is filed in justice court. I will continue to participate in this defined benefit plan.