Summary: Martina Chavez is an expert in sales tax compliance over at Avalara and I invited her on the show today to clear the air in regards to everything that is happening with Amazon and nexus when it comes to paying sales tax.<br> <br> Ever since the decision of the supreme court case Wayfair vs South Dakota was handed down, states may now charge tax on purchases made from out of state sellers even if the seller doesn’t have a physical presence in the taxing state. This has enormous implications to ecommerce.