South Dakota Affidavit Termination Spouse's Joint Tenancy Interest in Real Property is a legal document used when a married couple holds joint tenancy in a real estate property, and one spouse wishes to terminate their joint tenancy interest in the property. This document is used to establish the termination of the joint tenancy, allowing the remaining spouse to become the sole owner of the property. There are two types of South Dakota Affidavit Termination Spouse's Joint Tenancy Interest in Real Property: the “Spousal Joint Tenancy Termination Affidavit” and the “Quit Claim Deed Termination of Joint Tenancy.” The Spousal Joint Tenancy Termination Affidavit is used when both spouses are in agreement on ending the joint tenancy, while the Quit Claim Deed Termination of Joint Tenancy is used if one spouse is unwilling to sign the Spousal Joint Tenancy Termination Affidavit. Both documents must be signed by the terminating spouse and notarized in order to be legally valid.