The interest rate calculation must be carried out a minimum of seven places to the right of the decimal point and rounded back to six places to the right of the decimal point. When rounding back to the sixth place, all numbers five and above increase the sixth place by one; all numbers four or less have no effect on the sixth place number.
Or. Admin. Code § 150-294-0150
Stat. Auth.: ORS 305.100
Stats. Implemented: ORS 294.187