(815 ILCS 617/15)

Sec. 15. Substituted currency does not change contract requirements. None of the following shall have the effect of discharging or excusing performance under any contract, security, or instrument, or give a party the right unilaterally to alter or terminate any contract, security, or instrument:

(1) The introduction of the euro.

(2) Tendering euros in connection with any obligation in compliance with subsections (a) or (b) of Section 10.

(3) Determining the value of any obligation in compliance with subsections (a) or (b) of Section 10.

(4) Calculating or determining the subject or medium of payment of a contract, security, or instrument with reference to a substituted or replaced interest rate or other basis that is deemed a commercially reasonable substitute and substantial equivalent according to the terms of Section 10 of this Act.

(Source: P.A. 90-268, eff. 7-30-97.)