US Sales Tax Nexus Checker

US Sales Tax Nexus Checker — 50 states, one click

Since the Supreme Court's South Dakota v. Wayfair decision, US sellers can trigger sales tax collection duties in any state just by crossing a sales or transaction threshold — even without a warehouse there. This free nexus checker maps your annual US sales and orders against every 2026 state threshold in one shot.

How economic nexus works

• Most states: $100,000 in sales OR 200 transactions per year
• Higher-threshold states: California, Texas, New York ($500,000)
• Sales-only states: Kansas, Pennsylvania, South Dakota, Wisconsin (transaction count removed)
• No state sales tax: Oregon, Montana, New Hampshire, Delaware

Why this matters for Amazon, Etsy and Shopify sellers

Marketplace facilitator laws mean Amazon, Etsy and eBay usually collect and remit sales tax for you — but your own Shopify sales, DTC website and wholesale still count toward nexus. Once you cross a threshold, you generally have 30–60 days to register with that state's Department of Revenue.

Next steps if you triggered a state

1. Register for a sales tax permit in that state's DOR portal
2. Configure your Shopify / WooCommerce store to collect at checkout
3. File returns monthly, quarterly or annually depending on volume
4. Use TaxJar, Avalara or a CPA for multi-state filings

Related tools

Also try the Sales Tax & VAT Calculator to add or reverse tax, and the Profit Margin Calculator to see how tax registration affects net margin.