750 ILCS 65/9: Property.

A married person may own in the married person's own right real and personal property obtained by descent, gift, or purchase and may manage, sell, and convey that property to the same extent and in the same manner as an unmarried person. When the spouses live together, however, no transfer or conveyance of goods and chattels between the spouses shall be valid as against the rights and interests of any third person unless the transfer or conveyance is in writing and filed in the same manner as security interests are required to be filed by the laws of this State in cases where the possession of the property is to remain with the person giving the security.