What is the maximum number of years a President can serve in office?

The maximum number of years a President can serve in office is established by the 22nd Amendment to the U.S. Constitution, which limits an individual to two terms in office. Each term is four years, which totals eight years. However, there is an important stipulation that allows someone who has served less than two years of a term to potentially run for two additional terms. This means that in very rare circumstances, a person could serve up to ten years if they were to finish out another President's term and then win two full terms. Nonetheless, the standard limit is eight years.