Sources have said that six current and former employees of the DFB, who cannot be named for legal reasons, are at the centre of the allegations. These focus on reports that the income obtained from advertising revenue around the #German national side in 2014 and 2015 had been considerably understated, as was the revenue generated from asset management.
The amount of unpaid tax in this case could amount to 4.9 million (US $5.5 million).
Under German law, the DFB is not required to pay tax on the income form asset management, but it is obliged to do so on revenue generated from commercial activities.
The raids on the offices and private home were conducted across five federal States in Germany, and a large number of documents were removed for further review.
The DFB is the largest football authority in the world, but this is not the first time that it has been tarnished by scandal. It was also investigated over the suspected misuse of funds in connection with the 2006 World Cup which the country hosted.
The two men, at the heart of those allegations, Theo Zwanziger, who was head of the DFB at the time, and his successor, Wolfgang Niersbach have always denied impropriety, but investigations into the activities of the pair of them have continued in Germany and Switzerland for years.
Last year, Reinhard Grindel, who had been president of the association between 2016 and 2019 was forced to resign after receiving a gold watch as a present during a meeting of UEFA, the governing body of European football.