While blurred lines between offline and online buying is acceptable, blurred lines with tax is not. Before you go too far down the path of selling into new states or countries, consider how this impacts tax compliance and how you’ll handle these changes. Even when customers pay the tax, as the seller, you’re on the hook for making sure the right amount is charged and collected, and held liable if it isn’t done right. It’s a big task. And as your business grows, your tax liability grows too. Here are five key things to watch for and address before they become YOUR problem.