US Sales Tax Nexus Calculator for Ecommerce Sellers
Every US state has its own sales tax threshold. Once you cross it, you are required to register and collect. If you are a Canadian seller, this free nexus calculator shows where you stand, state by state.
US Sales Tax Nexus Threshold Checker
Enter your annual sales for each US state to find out where you may be required to register for sales tax.
Only fill in the states where you sell. Blank states will not appear in your results. States with no sales tax are disabled.
⚠ Please enter your sales for at least one state to calculate.
| State | Threshold | Your Sales | Status |
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Thresholds are current as of February 2026 and may have changed. This tool is for screening purposes only and does not constitute tax, legal, or professional advice. SAL Accounting is not responsible for any action taken — or not taken — in reliance on the results produced by this tool.
WHY THIS MATTERS
You may already owe sales tax and not know it
Economic nexus is based on your sales volume into a state, not whether you have a warehouse or office there. Most Canadian ecommerce sellers cross these thresholds without realising it, especially on platforms like Shopify and Amazon where US orders add up fast.
Every state sets its own economic nexus threshold
There is no single US sales tax rule. Most states set their threshold at $100,000, but the rules vary. If you are selling into multiple states, it is easy to cross a threshold without knowing and owe back taxes. The free calculator above checks every state at once.
This is not something a general accountant does for you
Most Canadian accountants do not check US sales tax obligations. If you are selling into the US from Canada, you need someone who knows the economic nexus by state, when and where to register. That is exactly what our team does for Canadian ecommerce sellers.
HOW THIS WORKS
Knowing where you owe is the first step. Filing correctly is the next one.
Most Canadian ecommerce sellers either do not know they have passed a threshold or find out too late. We help Shopify and Amazon sellers figure out where they are, handle the registration, and make sure nothing surprises them as US sales grow.
Common questions about US economic nexus for ecommerce sellers
What is the economic nexus and does it apply to Canadian sellers?
Economic nexus means a US state can make you collect sales tax when your sales into that state pass a certain threshold, even if you have no physical presence there. It applies to any seller, including Canadian ecommerce businesses selling into the US through Shopify, Amazon, or any other platform.
What are the economic nexus thresholds by state?
Most states set their economic nexus threshold at $100,000 in annual sales, but some are lower and a few also count the number of orders. These economic nexus standards are set at the state level and can change. The free calculator above does this for every state at once.
How do I know if I have economic nexus in a state?
Enter your annual US sales by state into the free nexus calculator above. If your sales in any state exceed that state’s economic nexus threshold, you likely need to register for sales tax there.
What is the economic nexus threshold in California?
California’s economic nexus threshold is $500K in annual sales, higher than most states. But other states where you sell may have lower thresholds.
What is the economic nexus threshold in Texas?
Texas has an economic nexus threshold of $500,000 in annual sales. Once you cross it, you are required to register and collect Texas sales tax.
What is the economic nexus threshold in New York?
New York’s economic nexus threshold is $$500K in sales and 100 transactions during the Preceding 4 Sales Tax Quarters. Both conditions must be met. If you are a Canadian seller with high-volume, lower-ticket orders into New York, the transaction count is what to watch.
What is the economic nexus threshold in Florida?
Florida’s economic nexus threshold is $100,000 in annual sales. This is the standard across most states and one that Canadian ecommerce sellers cross more often than they expect.
What happens if I exceed an economic nexus threshold and do not register?
The state can assess back taxes, penalties, and interest from the date you should have registered. The longer you wait, the more you owe. This is one of the most common compliance gaps we see with Canadian sellers expanding into the US.
Does economic nexus apply to income tax?
Economic nexus for income tax works differently than for sales tax, the rules, thresholds, and obligations are separate. If you are selling to US customers from Canada, sales tax is the issue to check first. This free calculator covers sales tax economic nexus only.
Do I need a US LLC to deal with the economic nexus?
No. Economic nexus is a sales tax obligation. It applies whether or not you have a US entity. You can register for state sales tax as a foreign business. A US LLC is a separate decision with its own costs and filing requirements. We have a separate calculator for that.
Read our disclaimer here
DISCLAIMER: Online Calculator Tools
Please read this disclaimer carefully before using any of the online calculator tools provided by SAL Accounting Professional Corporation.—–
1.No Professional Relationship or Advice
The use of these online calculators does not create an accountant-client, contractual, or other professional relationship between you and SAL Accounting Professional Corporation. The information and estimations generated by these tools are for informational and illustrative purposes only and do not constitute personalized accounting, tax, financial, or legal advice. They are not a substitute for consulting with a qualified tax professional who is familiar with your specific financial situation.
2.Informational Purposes and Accuracy
No Guarantee of Accuracy: SAL Accounting Professional Corporation does not guarantee the accuracy, completeness, or reliability of any results provided by the calculators. Tax laws, rates, and regulations are complex and subject to frequent change. The tools are based on the tax laws applicable at the time they were designed and cannot account for all variables, future legislative changes, or specific rulings that may affect your actual tax liability or financial outcome.
3. User Data Input
You are solely responsible for the information and data you input into the calculators. SAL Accounting Professional Corporation is not responsible for any errors or consequences that arise from inaccurate, incomplete, or incorrectly entered data.
✔ By using these calculators, you acknowledge that you do so at your own risk and that SAL Accounting Professional Corporation does not take any responsibility for decisions taken as a result of any materials or information provided by it.