The fourth government of Miguel Sanz was formed on 17 August 2007, following the latter's election as President of the Government of Navarre by the Parliament of Navarre on 11 August and his swearing-in on 16 August, as a result of Navarrese People's Union (UPN) emerging as the largest parliamentary force at the 2007 Navarrese regional election and forming an alliance together with the Convergence of Democrats of Navarre (CDN).

Until 2009, the cabinet comprised members of UPN and CDN, as well as a number of independents proposed by the former party.

[2] On 28 September 2009, Sanz expelled the two CDN members from the cabinet—effective from 1 October—over discrepancies between the two parties in relation with a reform of the Basque language law.

[3] Sanz's fourth government saw a number of cabinet changes during its tenure: From 23 May 2011, Sanz's cabinet took on acting duties for the duration of the government formation process resulting from the 2011 regional election.

A number of ministers renounced their posts throughout this period, with the ordinary discharge of duties of their ministries being transferred to other cabinet members as a result of Sanz being unable to appoint replacements while in acting role.