Surname เพิ่มทรัพย์ (Permsap 
, Permsub , Permsab ) , in the world, is a rare last name. The last name เพิ่มทรัพย์ is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, เพิ่มทรัพย์ is the forename as well as the last name.