Krüger stood as a DA parliamentary candidate from Mpumalanga in the 2014 national elections, and was subsequently elected to the National Assembly and sworn in on 21 May 2014.[3][4] On 5 June 2014, he was appointed Shadow Deputy Minister of Small Business Development in the new shadow cabinet led by Mmusi Maimane.[5] Krüger became a member of the Portfolio Committee on Small Business Development on 20 June.[6]
Between 17 September 2015 and 8 December 2016, he was an alternate member of the Portfolio Committee on Agriculture, Forestry and Fisheries.[6] Krüger returned to the committee on 2 March 2017 and served until the dissolution of the parliamentary term on 7 May 2019.[6]
After the general election on 8 May 2019, Krüger was selected to return to the National Assembly.[7] He was reappointed as Shadow Deputy Minister of Small Business Development on 5 June 2019 by Maimane.[8][9]
In March 2020, parliament published a notice of Krüger's intention to introduce the Ease of Doing Business Bill, a private member bill from the DA, which aims to develop a plan to reduce red tape for businesses that want the enter the market place.[10] Amid the COVID-19 pandemic in South Africa, he called for the re-opening of Pilates, yoga and other studios in July 2020.[11] In December 2020, he was reappointed as Shadow Deputy Minister of Small Business Development in the shadow cabinet of the newly elected DA leader, John Steenhuisen.[12]