(755 ILCS 5/2-7) (from Ch. 110 1/2, par. 2-7)
    Sec. 2-7. Disclaimer. (a) Right to Disclaim Interest in Property. A person to whom any property or interest therein passes, by whatever means, may disclaim the property or interest in whole or in part by delivering or filing a written disclaimer as hereinafter provided. A disclaimer may be of a fractional share or undivided interest, a specifically identifiable asset, portion or amount, any limited interest or estate or any property or interest derived through right of survivorship. A power (as defined in "An Act Concerning Termination of Powers", approved May 25, 1943, as amended) with respect to property shall be deemed to be an interest in such property.
    The representative of a decedent or ward may disclaim on behalf of the decedent or ward with leave of court. The court may approve the disclaimer by a representative of a decedent if it finds that the disclaimer benefits the estate as a whole and those interested in the estate generally even if the disclaimer alters the distribution of the property, part or interest disclaimed. The court may approve the disclaimer by a representative of a ward if it finds that it benefits those interested in the estate generally and is not materially detrimental to the interests of the ward. A disclaimer by a representative of a decedent or ward may be made without leave of court if a will or other instrument signed by the decedent or ward designating the representative specifically authorizes the representative to disclaim without court approval.
    The right to disclaim granted by this Section exists irrespective of any limitation on the interest of the disclaimant in the nature of a spendthrift provision or similar restriction.
    (b) Form of Disclaimer. The disclaimer shall (1) describe the property or part or interest disclaimed, (2) be signed by the disclaimant or his representative and (3) declare the disclaimer and the extent thereof.
    (c) Delivery of Disclaimer. The disclaimer shall be delivered to the transferor or donor or his representative, or to the trustee or other person who has legal title to the property, part or interest disclaimed, or, if none of the foregoing is readily determinable, shall be either delivered to a person having possession of the property, part or interest or who is entitled thereto by reason of the disclaimer, or filed or recorded as hereinafter provided. In the case of an interest passing by reason of the death of any person, an executed counterpart of the disclaimer may be filed with the clerk of the circuit court in the county in which the estate of the decedent is administered, or, if administration has not been commenced, in which it could be commenced. If an interest in real property is disclaimed, an executed counterpart of the disclaimer may be recorded in the office of the recorder in the county in which the real estate lies, or, if the title to the real estate is registered under "An Act concerning land titles", approved May 1, 1897, as amended, may be filed in the office of the registrar of titles of such county.
    (d) Effect of Disclaimer. Unless expressly provided otherwise in an instrument transferring the property or creating the interest disclaimed, the property, part or interest disclaimed shall descend or be distributed (1) if a present interest (a) in the case of a transfer by reason of the death of any person, as if the disclaimant had predeceased the decedent; (b) in the case of a transfer by revocable instrument or contract, as if the disclaimant had predeceased the date the maker no longer has the power to transfer to himself or another the entire legal and equitable ownership of the property or interest; or (c) in the case of any other inter vivos transfer, as if the disclaimant had predeceased the date of the transfer; and (2) if a future interest, as if the disclaimant had predeceased the event which determines that the taker of the property or interest has become finally ascertained and his interest has become indefeasibly fixed both in quality and quantity; and in each case the disclaimer shall relate back to such date for all purposes.
    A disclaimer of property or an interest in property shall not preclude any disclaimant from receiving the same property in another capacity or from receiving other interests in the property to which the disclaimer relates.
    Unless expressly provided otherwise in an instrument transferring the property or creating the interest disclaimed, a future interest limited to take effect at or after the termination of the estate or interest disclaimed shall accelerate and take effect in possession and enjoyment to the same extent as if the disclaimant had died before the date to which the disclaimer relates back.
    A disclaimer made pursuant to this Section shall be irrevocable and shall be binding upon the disclaimant and all persons claiming by, through or under the disclaimant.
    (e) Waiver and Bar. The right to disclaim property or a part thereof or an interest therein shall be barred by (1) a judicial sale of the property, part or interest before the disclaimer is effected; (2) an assignment, conveyance, encumbrance, pledge, sale or other transfer of the property, part or interest, or a contract therefor, by the disclaimant or his representative; (3) a written waiver of the right to disclaim; or (4) an acceptance of the property, part or interest by the disclaimant or his representative. Any person may presume, in the absence of actual knowledge to the contrary, that a disclaimer delivered or filed as provided in this Section is a valid disclaimer which is not barred by the preceding provisions of this paragraph.
    A written waiver of the right to disclaim may be made by any person or his representative and an executed counterpart of a waiver of the right to disclaim may be recorded or filed, all in the same manner as provided in this Section with respect to a disclaimer.
    In every case, acceptance must be affirmatively proved in order to constitute a bar to a disclaimer. An acceptance of property or an interest in property shall include the taking of possession, the acceptance of delivery or the receipt of benefits of the property or interest; except that (1) in the case of an interest in joint tenancy with right of survivorship such acceptance shall extend only to the fractional share of such property or interest determined by dividing the number one by the number of joint tenants, and (2) in the case of a ward, such acceptance shall extend only to property actually received by or on behalf of the ward or his representative during his minority or incapacity. The mere lapse of time or creation of an interest, in joint tenancy with right of survivorship or otherwise, with or without knowledge of the interest on the part of the disclaimant, shall not constitute acceptance for purposes of this Section.
    This Section does not abridge the right of any person to assign, convey, release, renounce or disclaim any property or interest therein arising under any other statute or which arose under prior law.
    Any interest in real or personal property which exists on or after the effective date of this Section may be disclaimed after that date in the manner provided herein, but no interest which has arisen prior to that date in any person other than the disclaimant shall be destroyed or diminished by any action of the disclaimant taken pursuant to this Section.
(Source: P.A. 83-1362.)