Earlier, the German Interior Ministry estimated migrant costs in 2016 at 1.8 billion to 3.3 billion euro.
On Saturday, German Chancellor Angela Merkel said that settling and integrating of about 800,000 of migrants Germany is expected to accept in 2015 is the national task for the country.
Europe is currently in the midst of a major migrant crisis, as thousands of migrants flee conflict-torn countries in the Middle East and North Africa.
According to the European Union`s external border protection agency Frontex, the total number of refugees detected at the bloc`s borders between January and July 2015 stands at over 340,000, which is three times higher than during the same period in 2014.
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