(1) For benefits paid on claims for which the date of injury is prior to January 1, 2013, the gross amount of any benefit under subsection 3, paragraph A, subparagraph (2) , or (3) , (4) or (5) reduced by the prorated weekly amount that would have been paid, if any, under the Federal Insurance Contributions Act, 26 United States Code, Sections 3101 to 3126, state income tax and federal income tax, calculated on an annual basis using as the number of exemptions the disabled employee's dependents plus the employee, and without excess itemized deductions. In determining the after-tax amount the tables provided for in section 102, subsection 1 must be used. The gross amount of any benefit under subsection 3, paragraph A, subparagraph (2) , or (3) , (4) or (5) is presumed to be the same as the average weekly wage for purposes of the table. The applicable 80% of after-tax amount as provided in the table, multiplied by 1.25, is conclusive for determining the after-tax amount of benefits under subsection 3, paragraph A, subparagraph (2) , or (3) , (4) or (5); and

(2) For benefits paid on claims for which the date of injury is on or after January 1, 2013, the net weekly amount of any old-age insurance benefit or benefit under an employee benefit plan, reduced by the prorated weekly amount that would have been paid, if any, under the Federal Insurance Contributions Act, 26 United States Code, Sections 3101 to 3126, federal income and state income taxes, calculated on an annual basis. The after-tax amount of any benefit subject to income taxes must be determined by using the maximum number of dependents' allowances to which the employee is entitled and the standard deduction or zero bracket amount applicable to the employee's filing status.

(1) Fifty percent of the amount of the old-age insurance benefits received or being received under the United States Social Security Act. For injuries occurring on or after October 1, 1995, such a reduction may not be made if the old-age insurance benefits had started prior to the date of injury or if the benefits are spouse's benefits;

(2) The after-tax amount of the payments received or being received under a self-insurance plan or a wage continuation plan or under a disability insurance policy provided by the same employer from whom benefits under section 212 or 213 are received if the employee did not contribute directly to the plan or to the payment of premiums regarding the disability insurance policy. If the self-insurance plans, wage continuation plans or disability insurance policies are entitled to repayment in the event of a workers' compensation benefit recovery, the insurance carrier shall satisfy the repayment out of funds the insurance carrier has received through the coordination of benefits provided for under this section; and

(3) The proportional amount, based on the ratio of the employer's contributions to the total insurance premiums for the policy period involved, of the after-tax amount of the payments received or being received by the employee pursuant to a disability insurance policy provided by the same employer from whom benefits under section 212 or 213 are received, if the employee did contribute directly to the payment of premiums regarding the disability insurance policy ; .

(5) The proportional amount, based on the ratio of  that employer's contributions to the total contributions to the plan or program, of the after-tax amount of the pension or retirement payments received or being received by the employee pursuant to a plan or program established or maintained by the same employer from whom benefits under section 212 or 213 are received, regardless of whether the employee contributed directly to the pension or retirement plan or program; and

(6) For those employers who do not provide a pension plan, the proportional amount, based on the ratio of the employer's contributions to the total contributions made to a qualified profit sharing plan under the United States Internal Revenue Code, Section 401(a) or any successor to the United States Internal Revenue Code, Section 401(a) covering a profit sharing plan that provides for the payment of benefits only upon retirement, disability, death, or other separation of employment to the extent that benefits are vested under the plan.