The term "brokerage fee" is now often used as a synonym for estate agent commission. In this context, commission is the fee payable for brokering a transaction between two third parties. The broker's commission is only due upon fulfilment of the contract. The → Insurance broker receives the commission in return for the provision of services.
Source reference: See VDT publication "VDT article series part 5 l Glossary" and the source indicated there.
