441—99.3 (234,252B) Determining net income.
	 99.3(1) Calculating net income. All includable income and allowable deductions shall be expressed in monthly amounts. Income and corresponding deductions received at a frequency other than monthly shall be converted to equivalent monthly amounts by multiplying the income and corresponding deductions received on a weekly basis by 4.33, on a biweekly basis by 2.17, and on a semimonthly basis by 2. All converted figures shall be rounded to the nearest dollar.
	 99.3(2) Estimating net income.
	  a.   	 The estimated net income of a parent shall be 80 percent of the reported income or the estimated income as determined from occupational wage rate information or derived from the median income of parents on the CSRU caseload, as appropriate, minus the deductions enumerated in subrules 99.2(3) to 99.2(8) when the information to calculate these deductions is readily available through automated or other sources.
	  b.   	 The net income of a parent shall be estimated under the following conditions:
	 (1) 	 Gross earned income information was obtained from a source that did not provide itemized deductions allowed by the mandatory support guidelines.
	 (2) 	 Occupational wage rate information or median income of parents on the CSRU caseload was used to determine a parent’s income.