The semifinals and championship took place Saturday and Sunday, March 27 and 28.

The 2021 tournament also featured a third-place game Sunday, March 28, which had not been played at the NIT since 2003.

[2] This was the first NIT in which the semifinals and final were not played in New York City.

[2] There were no automatic qualifiers in the 2021 NIT due to the reduced field size.

[3] Westwood One had exclusive radio rights to the semifinals and the championship.