7 Things to Look Out for in Sales Tax for E-Commerce Businesses Serving the US Market

E-commerce has transformed how businesses operate, making it easier for companies to reach customers across the United States and worldwide. However, navigating sales tax for e-commerce can be a complex task, especially with all the different people to pay, like affiliates, influencers, creators, and employees, and dealing with a diverse and ever-changing market like the US. Here are seven critical things to look out for when it comes to sales tax for e-commerce businesses operating in the United States:

1. Sales Tax Nexus:

Before diving into the complexities of sales tax, understanding the concept of “nexus.” Nexus refers to the connection between a business and a state, which can trigger sales tax obligations. Determining where you have a physical presence or meet economic thresholds is essential, as this will impact your tax responsibilities.

2. State Variations:

The United States has a complex sales tax system, with each state having its rules and rates. Some states have no sales tax, while others have high rates. Keep a close eye on the specific tax requirements for each state you operate in.

3. Taxable Products and Services:

Not all products or services are subject to sales tax similarly. Different states have different rules on what is taxable and what is not. For example, clothing might be tax-exempt in one state but subject to tax in another. It’s essential to be aware of these distinctions.

4. Economic Nexus Laws:

Many states have implemented economic nexus laws in response to the Supreme Court’s Wayfair decision. These laws require businesses to collect sales tax if they meet certain sales or transaction thresholds, even if they don’t have a physical presence in the state. Please make sure you know these thresholds and monitor your sales in various states.

5. Tax Exemptions and Certificates:

Some transactions, such as reseller purchases or items sold for a specific purpose, may be exempt from sales tax. To avoid overpaying taxes, you should obtain and keep valid exemption certificates from customers who qualify for these exemptions.

6. Sales Tax Software:

Managing sales tax compliance manually can be extremely challenging and time-consuming. Consider using sales tax software that can help you calculate, collect, and remit sales tax for multiple states. These tools can also assist in filing sales tax returns.

7. Filing and Reporting Deadlines:

Different states have different filing and reporting deadlines for sales tax. Missing these deadlines can lead to penalties and interest charges. Stay organized and know when your filings are due in each state.


Staying compliant with sales tax for e-commerce businesses serving the US market is no small feat, but ensuring your business’s sustainability and avoiding costly penalties is essential. By understanding the nuances of sales tax nexus, state variations, taxable products, economic
nexus laws, exemptions, using sales tax software, and meeting filing deadlines, you can navigate the complex world of sales tax with confidence and peace of mind. If you would rather spend time growing your business, set up Kintsugi AI within 60 seconds and automate every aspect of sales tax – from registration to filing/remittance and exemptions!

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