Both agents complete a single commission agreement. Usually, the less lazy agent will complete it and send it to the other :-). It is an agreement between brokers not agents. Both agents are representatives of the broker and sign on the broker's behalf. There is one document. Either agent can submit it to the closing entity (title agency or closing attorney). A closer can not disburse the commission with out an agreement between the two brokers. If the other agent in any of my transactions says they will send it to the closing attorney, I will usually follow up with that attorney and confirm they have received it. If not, I send it myself. Not sure why a buyer/seller is asking this question, but i hope that answers it.