Today, we're having a conversation with Mario Lucibello, a partner at Greenhaus Riordan & Company LLP, in West Haven, Connecticut, about the fascinating topic of sales tax. Mario is a CPA who does a lot of work with e-commerce sellers and he is familiar with the way that sales tax works in this context. In today's episode, Mario talks to us about how the sales tax system works, the recent changes that have happened, what he recommends, and how he advises his clients to approach all of this.