According to EatByDate.com, fresh cheesecake, homemade cheesecake and frozen cheesecake stay good in the freezer for six to eight months. The cheesecake should be placed in the freezer by the sell-by date to avoid mold or bacteria.
Wrap the cheesecake in aluminum foil or plastic wrap and place it in a freezer bag or airtight container before storing it in the freezer. Generally, storing cheesecake in the freezer does not alter the taste of the cake once it has thawed. Cheesecake can also be stored in the refrigerator for up to six days by placing it in a food storage container.