This varies on the size of the meal you are giving and the appetite of your guests. Generally speaking, it is safe to plan for about 3-5 tater tots per person, depending on what else is being served.  If you are serving a more minimal meal, or if your guests tend to have larger appetites, it may be wise to plan for an extra 1-2 tater tots per person.  Ultimately, you should gauge how many tater tots each guest will likely consume and make sure you have enough. A simple way to be sure that everyone has enough is by having extra tater tots available in case anyone wants seconds!