Hello, it will depend which will be spelled out in the contract you sign with them.
Commission rates are negotiable and can vary. The key to negotiating the best rate is to compare and interview several agents in your local area. We started UpNest (http://www.upnest.com) to help you compare top agents that compete to earn your business. Since agents compete for you, they offer their very best rates and services. You'll also get to ""comparison shop"" like you do for all the other things you usually pay for. It's free and there's no risk to try us out, Good luck! http://www.upnest.com
You can also find out the average commission rate for your area here: http://www.upnest.com/re/realtor-commissions/