How long can cooked tomato sauce stay good in fridge before it spoils?

Cooked tomato sauce can typically be stored in the refrigerator for about 3 to 5 days before it starts to spoil. To ensure its freshness, store it in an airtight container. If you need to keep it longer, consider freezing the sauce, which can extend its shelf life to about 3 to 6 months. Always check for signs of spoilage, such as off smells or mold, before consuming.