Section 316.685 - Federal income tax deductions; accrual method of accounting required; adjustment for federal earned income credit(1)(a) The federal income tax deduction provided by ORS 316.680 shall be as reported on the taxpayer's original return and shall be computed on the accrual method of accounting. Any adjustments to the federal income tax deduction now or hereafter required by Oregon law, including but not limited to the elimination of the self-employment tax, also shall be computed and eliminated according to the accrual method of accounting.(b) For purposes of calculating the amount of the deduction for federal income taxes provided under ORS 316.680, the taxpayer shall not take into account any amount of the earned income credit provided under section 32 of the Internal Revenue Code that reduced the amount of the taxpayer's federal income tax liability for the tax year.(2) If refunds or additional assessments result from an adjustment whether initiated by the federal or state government or the taxpayer after the filing of the original return by the taxpayer, any additional federal taxes shall be deductible by the Oregon taxpayer under this section in the year in which the adjustment is finally determined or paid whichever is later. In the case of a refund the tax reduction shall be added to the taxpayer's income in the year in which the refund is received.(3) For purposes of this chapter, federal income tax does not include the following: (a) Taxes, contributions or other payments paid by employees in pursuance of federal laws relating to Social Security, railroad retirement, unemployment compensation or old age benefits.(b) Taxes paid pursuant to the Self-Employment Contribution Act, subtitle A, chapter 2, Internal Revenue Code. Formerly 316.072; 1987 c.293 §24; 1997 c.692 §4