The Berlin/Bonn Act () regulated the move of the Bundestag and parts of the government of Germany from Bonn to Berlin. It also regulated the move of certain Federal agencies and other German federal facilities to Bonn. The act was a consequence of the "Hauptstadtbeschluss" () of 20 June 1991, which made Berlin the seat of government. Berlin had already been the capital of the united Germany since the Unification Treaty of 3 October 1990. The Berlin/Bonn Act was enacted on 26 April 1994. The act's full official title is "Act for the implementation of the enactment of the German Bundestag of 20 June 1991 for the completion of the German unity" ().
The Berlin/Bonn act determined which federal ministries moved to the capital and gave the city certain commitments regarding the preservation of Bonn as a location of politics. In addition, it awarded the city the unique title of the Federal City.
The act was implemented incrementally. The most important year was 1999, when the Bundestag moved to the Reichstag building in Berlin. At the same time, the Federal Court of Auditors and the Federal Cartel Office moved from Berlin and the Rhine-Main area to Bonn. Finally, the Bundesrat moved to Berlin in 2000. 
Federal agencies that moved.
The following are examples of federal facilities that moved to Bonn (in total: 22):
These facilities were established in Bonn:
The facilities were partially relocated:
Compensation agreement.
Also, the Berlin/Bonn act is the foundation of the "Agreement regarding the compensation measures for the Bonn region" of 29 June 1994 providing for 1.437 billion Euros to be used between 1995 and 2004. This money was used to fund various compensation measures and concrete action plans like the foundation of the Bonn-Rhein-Sieg University of Applied Sciences.
Recent developments.
According to the government, around 37 percent of federal government positions were based in Bonn by the end of 2015. Some see this as a breach of the Berlin-Bonn Act because it was agreed that the majority of ministerial employees should work in Bonn rather than in Berlin. According to the Federal Ministry of Finance, this division of government offices costs taxpayers at least 8.6 million euros each year, for example in flight fares for officials' business trips. By July 2019, most political parties of Germany, including the Left Party, the Social Democrats, the Green Party and the Christian Democrats, were starting to agree to move all governmental institutions remaining in Bonn to Berlin, because ministers and civil servants were flying between the two cities about 230,000 times a year, which was considered too impractical, expensive and environmentally damaging. The distance of 500 kilometres between Bonn and Berlin was only travelable by train in 5.5 hours, so either the train connections had to be considerably upgraded, or Bonn abolished as the secondary capital.
At the same time in 2019, Bonn, together with neighbouring Rhein-Sieg-Kreis and Landkreis Ahrweiler and supported by the governments of North Rhine-Westphalia and Rhineland-Palatinate, presented its proposals for a new Bonn Agreement. This agreement between the Bonn region and the German Federal Government seeks to further strengthen the position of Bonn as Germany's second seat of government, as a seat of the United Nations and as a centre for international cooperation and sustainable development. However, talks between Bonn and the Federal Ministry of the Interior, which is responsible for the compensations measures for the Bonn region, stalled - partly because of the COVID-19 pandemic in 2020.
References.
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