Trump’s current term runs on the normal 4‑year schedule. In 2020 specifically, he was not president for the full year.

Trump’s current term

Donald Trump’s second, nonconsecutive term as president began with his inauguration on January 20, 2025, making him the 47th president. Under the U.S. Constitution, a presidential term lasts four years, so this term is scheduled to run until January 20, 2029.

What happened in 2020

In the calendar year 2020, Trump served as president from January 1, 2020 until January 20, 2021, when Joe Biden was inaugurated after winning the 2020 election. So if the question is “how long was Trump president in 2020,” the answer is that he was president for the entire year 2020, but his first presidency ended a few weeks into 2021.