If you are entering the market for a home, some rules about realtor commissions have changed. Now sellers and buyers will both be responsible for these payments after the decision in a case brought against the National Association of Realtors. They will no longer be able to mandate the seller’s agent make an offer of monies to the buyer’s agent, or set any kind of industrywide standard commissions. Debra Kamin for the New York Times offers best practices for buyers and sellers as these new rules come into play. Buying or Selling a Home? The Rules Have Changed.