An Illinois Estate Claim Contract is a legal document used to establish the rights of an individual to make a claim to a deceased person's estate. This type of contract is commonly used in the state of Illinois to ensure that the assets and liabilities of the deceased person are accurately accounted for and distributed to the rightful heirs. There are two main types of Illinois Estate Claim Contracts: a claim for a surviving spouse, and a claim for a surviving child. In either case, the contract must be authorized by the court and signed by the appropriate parties. It must also include information such as the name of the deceased, the date of death, the amount of the claim, and any other applicable information. The contract must also be filed with the Probate Court within the proper time frame.