Frankfurt's accused Lord Mayor Peter Feldmann (SPD) has to answer in court from mid-October.
The trial on suspicion of accepting an advantage begins on October 18, as the Frankfurt Regional Court announced on Wednesday.
In addition, five other dates up to and including November 23 were announced.
In March, the public prosecutor's office brought charges based on sufficient suspicion of accepting an advantage.
Feldmann's wife, as the head of an Awo-Kita, "without any objective reason" received a salary that exceeded the collective agreement, it was said.
According to the public prosecutor, Awo also supported Feldmann in the 2018 election campaign by raising donations.
In return, he wanted to "benevolently consider" the interests of Awo Frankfurt.
On Tuesday, the SPD politician announced his retirement for early 2023.
He will apply next January to end his term of office at the end of the month, it said.
"I would like to save the city of Frankfurt an agonizing and expensive vote-out procedure - and take the opportunity to bring my official business to a proper conclusion after more than ten years.
I will hand over an orderly house,” he explained.
Feldmann was first elected mayor of the largest city in Hesse in 2012 and was confirmed in office for a further six years in 2018.
The 63-year-old is accused of corruption in connection with the Awo affair and has also been noticed by other slips in the past few weeks.
Recently, Feldmann's own party, the SPD, had even called for his resignation.