(735 ILCS 5/12-639)
(from Ch. 110, par. 12-639)
Pre-judgment and judgment interest.
(a) With respect to a foreign-money claim, recovery of pre-judgment or
pre-award interest and the rate of interest to be applied in the action or
distribution proceeding, except as provided in subsection (b), are matters
of the substantive law governing the right to recovery under the
conflict-of-laws rules of this State.
(b) The court or arbitrator shall increase or decrease the amount of
pre-judgment or pre-award interest otherwise payable in a judgment or award
in foreign-money to the extent required by the law of this State governing
a failure to make or accept an offer of settlement or offer of judgment, or
conduct by a party or its attorney causing undue delay or expense.
(c) A judgment or award on a foreign-money claim bears interest at the
rate applicable to judgments of this State.
(Source: P.A. 86-1291.)