MOSCOW (Sputnik) — According to the statement, the sum includes costs of accommodation, food, creches, schools, German courses, training and administration.
"It [the institute] now expects the costs [of acceptance] to amount to 21.1 billion euros for 2015 alone, based on the assumption that 1.1 million people will flee to Germany by the end of the year," the statement said on Tuesday.
Previously, the institution estimated the expenditure of German government on migrants up to 10 billion of euros to cover only accommodation and food for a total of 800,000 refugees.
Europe, especially Germany, has been struggling with a major migrant crisis as hundreds of thousands refugees flee war-torn regions of the Middle East and North Africa.
According to the head of EU border agency Frontex, some 800,000 undocumented migrants have already arrived in the bloc during 2015.