The sales tax implications of building a marketplace integration are only getting more complicated. Economic nexus policies have been popping up nationwide in the wake of the U.S. Supreme Court’s South Dakota v. Wayfair ruling, and small retailers that sell through larger marketplaces also need to watch out for taxes that specifically target marketplace sales.

Want to be a dev hero to your marketplace clients? In this guide, you’ll learn about six design ideas to keep in mind as you’re working on your next marketplace integration.