Oregon Revised Statutes Revenue and Taxation § 317.312

To derive Oregon taxable income, for certain health care service contractors for which federal tax exempt status was denied by section 501(m) of the Internal Revenue Code,  1 and for which all assets owned by the health care service contractor prior to the effective date of the denial of exempt status are treated as placed in service on such effective date for federal tax purposes, no adjustment shall be made to federal depreciation expense.