31 Dec 2017 ATTACH OREGON FORM 20, FEDERAL FORM 1120, & 1125-E, IF FILED. 1. Compensation Allowance Deduction (see instructions) . 22 Dec 2017 Form OR-20-INC Instructions. Oregon 2017 Corporation Income Tax. Form OR-20-INC Instructions. Table of contents. Fast • Accurate • Secure. In general, Oregon income tax law is based on federal income tax Oregon C corporation returns is May 15, 2017. .. Form OR-20 line instructions for IC-DISCs. (a) The personal property remains in the exact state or form as it was when is not required to file an Oregon Corporation Excise Tax Return, Form 20 and is the subtraction code prescribed by department instructions for tax year 2017 orLate changes to 2018 instructions for Forms OR-20 and OR-20-INC. Note: The changes . Please note: The subtraction for tax year 2017 uses a dif- ferent code 22 Dec 2017 If paying by mail, send each payment with a Form OR-20-V, payment voucher, to: Oregon Department of Revenue, PO Box 14780, Salem, Oregon 97309-0469. Include on your check: FEIN. Tax year. Form OR-20-S Instructions. Oregon 2017 S Corporation Tax. Form OR-20-S Instructions. Table of contents. Go electronic! Fast • Accurate • Secure. File corporate Schedule OR-1, Tobacco Products Tax, 150-605-011, 2017, Form . Form OR-20, Instructions for Oregon Corporation Excise Tax Return, 150-102-016, 2017 2017 Form OR?20. Page 2 of 3, 150-102-020 (Rev. 10-17). 02581701020000. 1. Taxable income from U.S. corporation income tax return (see instructions) . Form OR-65, Oregon Partnership Return of Income, 150-101-065, 2018, Form. Form OR-20-V, Oregon Corporation Tax Payment Voucher and Instructions