When Does Your Business Owe Sales Tax?

Many business owners assume they only owe sales tax where they have a physical location. That’s no longer the case. Today, businesses can have sales tax obligations in states where they simply sell enough products or services—even without an office, warehouse, or employees there.

Knowing when your business has sales tax nexus is essential to staying compliant and avoiding costly penalties.

 

What Creates Sales Tax Nexus?

Your business generally must collect and remit sales tax when it has nexus with a state and makes taxable sales there.

Nexus can be established through:

• Physical presence (office, warehouse, employees, or inventory)
• Economic nexus (meeting a state’s sales threshold)

 

Economic Nexus: The New Standard

Following the Supreme Court’s Wayfair decision, most states require remote sellers to collect sales tax once they exceed certain sales thresholds—even without a physical presence.

Common 2026 thresholds include:

• $100,000 in annual sales (most states)
• $250,000 (Alabama, Mississippi)
• $500,000 (California, Texas)
• New York: More than $500,000 in sales and more than 100 transactions

 

What Counts Toward the Threshold?

Every state has its own rules.

Some states count:

• Gross sales
• Taxable sales only
• Retail sales
• Exempt sales

Because these rules vary, businesses selling into multiple states should monitor sales carefully throughout the year.

 

Physical Presence Still Matters

Even if you don’t meet an economic threshold, you may still have nexus if your business has:

• An office or storefront
• Employees or independent representatives
• Inventory stored in the state
• A warehouse or fulfillment center
• Equipment or leased property located there

 

What Happens After You Have Nexus?

Once your business establishes nexus, you may need to:

• Register for a sales tax permit
• Collect sales tax on taxable transactions
• File sales tax returns
• Remit collected taxes to the state

Many states require businesses to file returns even if no tax is due during the reporting period.

 

Key Takeaways

• ✔ Physical presence is no longer required to create sales tax obligations.
• ✔ Economic nexus laws now apply in nearly every sales-tax state.
• ✔ The most common threshold is $100,000 in annual sales, but rules vary by state.
• ✔ Different states count different types of sales toward their thresholds.
• ✔ Once nexus exists, registration, collection, filing, and remittance requirements generally begin.

 

Need Help Navigating Multi-State Sales Tax?

Economic nexus rules can become complicated as your business grows. Our CPA team can help determine where you have sales tax obligations, handle registrations, and keep your business compliant across multiple states.

Contact us today for guidance on your 2026 sales tax requirements.