There are multiple definitions - click on the translation that matches your context.
commission means:
Substantiv
full
noun
Sometimes the context may warrant an additional word like "fee" or "charge" after "commission" as a more precise translation of the German source term "Provision", only because the word "commission" by itself has several different meanings and parts of speech.
a group of people who have been formally chosen to find out about something or to control something
The Audit Commission doesn't just look at the cost but also the quality.
a payment to someone who sells goods that is directly related to the amount of goods sold
The agent will receive a commission of 10% of annual sales.
a request for an artist or designer to do a special piece of work
The commission will be her first piece of work for over five years.