What is the maximum time a President can serve?

The maximum time a President can serve is outlined in the 22nd Amendment to the U.S. Constitution, which states that no person can be elected to the office of the President more than twice. This establishes a two-term limit, equating to a maximum of eight years in office. However, the amendment also accounts for the possibility that if a Vice President assumes the presidency due to the death, resignation, or removal of a President, they can serve up to two additional years beyond the completion of their predecessor's term. Therefore, if a Vice President finishes the last two years of a term and then is elected for two full terms of their own, they can serve a total of ten years. This nuanced provision allows for the maximum potential presidency duration of ten years, which makes the answer accurate.