COMMERCIAL TRANSACTIONS
CHAPTER 22
MONEY OF ACCOUNT AND INTEREST
28-22-104.Legal rate of interest. (1) When there is no express contract in
writing fixing a different rate of interest, interest is allowed at
the rate of twelve cents (12¢) on the hundred by the year on:
1. Money
due by express contract.
2. Money
after the same becomes due.
3. Money
lent.
4. Money
received to the use of another and retained beyond a reasonable time
without the owner’s consent, express or implied.
5. Money
due on the settlement of mutual accounts from the date the balance
is ascertained.
6. Money
due upon open accounts after three (3) months from the date of the
last item.
(2) The
legal rate of interest on money due on the judgment of any competent
court or tribunal shall be the rate of five percent (5%) plus the
base rate in effect at the time of entry of the judgment. The base
rate shall be determined on July 1 of each year by the Idaho state
treasurer and shall be the weekly average yield on United States treasury
securities as adjusted to a constant maturity of one (1) year and
rounded up to the nearest one-eighth percent (1/8%). The base rate
shall be determined by the Idaho state treasurer utilizing the published
interest rates during the second week in June of the year in which
such interest is being calculated. The legal rate of interest as announced
by the treasurer on July 1 of each year shall operate as the rate
applying for the succeeding twelve (12) months to all judgments declared
during such succeeding twelve (12) month period. The payment of interest
and principal on each judgment shall be calculated according to a
three hundred sixty-five (365) day year.