After the election of the 50th Parliament of New Zealand Williamson was returned to his seat and re-appointed as a minister in the second term of the National-led government. Williamson retained his 2008 portfolios of Customs, Land Information and Building and Construction but lost the role of Minister for Small Business to John Banks as part of the new National-ACT Confidence and Supply deal. Williamson remained a minister outside of cabinet, along with Jo Goodhew, Chester Borrows and Chris Tremain, until his resignation from all ministerial portfolios on 1 May 2014.