Changes to the laws about how sales tax is collected in Colorado went into effect on December 1. These changes affect many small businesses in Colorado. The new laws require retailers who ship taxable products to consumers in Colorado to base the sales tax collected on the buyer’s address, not the seller’s. This gets complicated, however, because when adding up all the state’s cities, counties, and special districts, there are “683 possible sales tax rates in Colorado,” according to the Denver Post. So how can retailers learn about these changes and implement them? First of all, the good news is that the Colorado Department of Revenue is allowing a grace period through May 31, 2019, to allow retailers to implement these changes. You can find information about the grace period and FAQs about the changes on the department’s website. You can also learn more at Revenue Online.