On 3 August 2018, San Marino ratified the pending protocol to the 2010 tax information exchange agreement with Guernsey. The protocol, signed on 19 December 2017 by Guernsey and 14 December 2017 by San Marino, amends Article 12 (No Prejudicial or Restrictive Measures) so that the provisions will apply as long as any agreement relating to the exchange of information between the competent authorities is in force and effective, and not just the TIEA itself. The protocol will enter into force once the ratification instruments are exchanged and will apply from that date.