Turkey gravy will be good for 4 to 5 days in the fridge.
If you want to keep the turkey gravy longer than 4 days you should place it in a freezer safe container or Ziploc bag and the Turkey Gravy will remain good to eat for 6 months to a year.
Although for the best freshness of the Turkey Gravy it's best to eat it within a month or two.
When the Turkey gravy sits out longer than 2 hours it begins to grow bacteria which is bad and can make you sick.
So refrigerate or freeze any leftover Turkey gravy or any other gravy to prevent it from going bad.
Frozen gravy will last much longer than gravy that is just in the refrigerator.