The initial report, sixteen pages long, was submitted on March 23, 1943. On Himmler's request an abridged version, six-and-a-half pages long, was updated to March 31, 1943.^[3] After the initial report was made and delivered to Himmler, he requested that he receive short monthly reports there after.^[4] The full report summarized how many Jews remained in Germany, Austria and Europe; detailed the numbers of Jews detained in the Nazi concentration camps; how many Jews had died natural deaths since 1933; and how many Jews had been evacuated to the eastern territories.^[1] Himmler accepted the full report on a confidential basis, but for the abridged estimate, made Korherr change the word "Sonderbehandlung" or "special treatment," to the word "durchgeschleust" or "processed."^[5] The report calculated that, from 1937 to December 1942, the number of Jews in Europe had fallen by 4 million.^[1]

Korherr ascribed this fall to "emigration, partially due to the excess mortality of the Jews in Central and Western Europe, partially due to the evacuations especially in the more strongly populated Eastern Territories, which are here counted as ongoing."^[1]

By way of explanation, Korherr added that

It must not be overlooked in this respect that of the deaths of Soviet Russian Jews in the occupied Eastern territories only a part was recorded, whereas deaths in the rest of European Russia and at the front are not included at all. In addition there are movements of Jews inside Russia to the Asian part which are unknown to us. The movement of Jews from the European countries outside the German influence is also of a largely unknown order of magnitude. On the whole European Jewry should since 1933, i.e. in the first decade of National Socialist German power, have lost almost half of its population.^[1]

After the war Korherr was initially held in Allied custody but was one of the first to be released.^[6] He was then hired at the West Germany Ministry of Finance. However, he was dismissed in 1961 when Gerald Reitlinger’s book Die Endlösung [The Final Solution] was published and it revealed the importance of the Korherr Report in crafting the "final solution."^[7]

The Korherr Report's full impact was revealed at Adolf Eichmann's trial when he testified that the report made his job "much easier."^[7]

Korherr denied all knowledge of the Holocaust, saying that he had "only heard about exterminations after the collapse in 1945."^[8]

In a letter he sent to the German magazine Der Spiegel in July 1977, Korherr said that he had not written the report on Himmler's order"^[9] and that the

statement that I had mentioned that over a million Jews had died in the camps of the Generalgouvernement and the Warthegau through special treatment is also inaccurate. I must protest against the word 'died' in this context. It was the very word 'Sonderbehandlung' ['special treatment'] that led me to call the RSHA by phone and ask what this word meant. I was given the answer that these were Jews who were settled in the Lublin district.^[9]

• Korherr Report online
• Korherr Report, Nuremberg documents, NO 5192-4
• Korherr-Bericht, lange Fassung originals (German)
• Götz Aly, Karl Heinz Roth: Die restlose Erfassung. Volkszählen, Identifizieren, Aussondern im Nationalsozialismus. Frankfurt/M. 2005, ISBN 3-596-14767-0 (germ.)
• Gerald Roberts Reitlinger, Johann Wolfgang Brügel: Die Endlösung. Hitlers Versuch der Ausrottung der Juden Europas 1939–1945. (1. Ed. English 1953 The Final Solution: The Attempt to Exterminate the Jews of Europe, 1939-1945. 1987 - ISBN 0-87668-951-9), Berlin, Colloquium 1. dt. Aufl. - 1956, 7. Ed. 1992 (ISBN 3891668708), Copress - paperb.ed 1983. 700 p. ISBN 3-7678-0466-2