Oregon Revised Statutes Mortgages and Liens § 86.165

(1) With respect to any periodic installment payment received by it within 15 days after the due date. However, if the 15-day period ends on a Saturday, Sunday or legal holiday the 15-day period is extended to the next business day.

(2) In a dollar amount which exceeds five percent of the sum of principal and interest of the delinquent periodic installment payment or the amount provided in the note or mortgage held by the lender, whichever is the lesser.

(3) Unless the note or mortgage held by the lender provides for payment of a late charge on delinquent periodic installments and a monthly billing, coupon or notice is provided by the lender disclosing the date on which periodic installments are due and that a late charge may be imposed if payment is not received by lender within 15 days thereafter. However, if the lender and the borrower have provided in the note or other written loan agreement that the payments on the loan shall be made by the means of automatic deductions from a deposit account maintained by the borrower, the lender shall not be required to provide the borrower with a monthly billing, coupon or notice under this subsection with respect to any occasion on which there are insufficient funds in the borrower's account to cover the amount of a loan payment on the date the loan payment becomes due and within the period described in subsection (1) of this section.

(4) More than once on any single installment.