In 1555, inspired by the example of Thomas Pope, founder of Trinity College, Oxford, White obtained a royal licence for the foundation of St John's College, Oxford, dedicated to the patron saint of the Merchant Taylors and established in the buildings of the dissolved Cistercian College of St Bernard. He was involved in the foundation of Merchant Taylors' School, and made provision that scholars of the college should be nominated from pupils of the school. A similar arrangement exists with King Henry VIII School, Coventry, where one of the school's four houses bears his name. He also purchased Gloucester Hall and set it up in 1560 as a hall of residence for scholars; this became the basis of the later foundation of Worcester College. As a result of his philanthropy he was listed in Richard Johnson's Nine Worthies of London in 1592.
The Sir Thomas White Loan Charity was founded in 1542 and is still extant. It gives interest-free loans to aspiring businesspeople in Leicestershire and Rutland. There are several memorials to White in England and he is honoured on Leicester's Clock Tower .