Taxes are an unavoidable yet complicated part of doing business in Thailand. There are over 7 chapters and 143 sections in the Revenue Code of Thailand. Because of this, you may fail to follow some rules without even meaning to do so. One minor tax mistake could have more impact on your business than you’d imagine. It may lead to problems with the Revenue Department. And this is the last thing you want. Fixing mistakes is a lengthy process costing valuable time and money. This article will guide you through the common tax mistakes—and the penalties you may suffer from making such mistakes—while running a company in Thailand.