765 ILCS 915/1

No agreement for the mortgage of a single-family residence shall contain any requirement that the mortgagor of the residence shall maintain in any escrow account for the payment of real property taxes or in any escrow-like arrangement for the same purpose any amount of money greater than 150% of the previous year's assessed real property tax upon the real property in regard to which the account is maintained, except in the first year of the mortgage's life.