Question: How long can you leave marinated steak in the refrigerator before it becomes unsafe to eat?
Answer: You can safely leave marinated steak in the refrigerator for up to 5 days, according to the United States Department of Agriculture.
But while leaving marinated steak in the fridge for 5 days may be fine from a safety standpoint, many marinade recipes are designed to work much faster than that. In those cases, leaving steak marinated for too long could result in an undesirable texture or flavor. Be sure to check the recipe for maximum recommended timing.
Keep marinated steak covered while it is in the refrigerator.