Ecommerce sales tax is a consumption tax levied by states and localities on online purchases. Historically simpler, the Supreme Court's 2018 Wayfair decision [2] significantly expanded the obligation for online retailers to collect and remit sales tax in states where they have "economic nexus," even without a physical presence. This created a complex, state-by-state landscape that burdens many online businesses [3].
The Wayfair decision eliminated the physical presence rule, meaning ecommerce businesses now need to track sales into every state to determine if they've met economic nexus thresholds. This shift often forces small to medium-sized online retailers to navigate a patchwork of different tax laws and rates, rather than a single, unified system [3]. It’s a significant compliance hurdle that complicates multi-channel sales.
First, understand where your business has economic nexus. Tools and services can help automate sales tax calculation, collection, and remittance across various states [2]. Strategic tax planning and staying informed on changing regulations are crucial for profitability and preparing your financials, especially if you anticipate a future exit [1]. Don't guess; get it right to avoid penalties.