If you sell on your website, TikTok Shop, Amazon, or Etsy and ship to customers in multiple states β you may already owe sales tax you've never collected. Most Vietnamese business owners don't find out until they receive an audit notice from a state they've never even visited.
After the 2018 South Dakota v. Wayfair ruling, states can require you to collect sales tax even with no physical presence β just $100,000 in sales or 200 transactions in that state is enough to trigger the obligation.
Our team will review your sales footprint and identify your exact nexus obligations β before a state finds you first.
Our tax specialist will reach out within 24 hours β in Vietnamese or English β with your Sales Tax assessment. Redirecting shortly...
Before 2018, you only needed to collect sales tax where you had a physical store or warehouse. That changed forever with one Supreme Court ruling.
In South Dakota v. Wayfair (2018), the Supreme Court ruled that states can require businesses to collect and remit sales tax based on economic activity alone β no physical location needed.
Today, 45 states + Washington D.C. have economic nexus laws. Most use a threshold of $100,000 in sales OR 200 transactions in that state per year.
If you sell nationally on Shopify or Amazon and exceed those thresholds, you are legally required to register, collect, and file sales tax in those states β even if you've never been there.
Exceeding $100k in sales or 200 transactions in a state within a calendar year.
A warehouse, office, employee, or even an Amazon FBA fulfillment center in a state automatically creates nexus.
Having affiliates or referral partners who drive sales from within a state can also create nexus obligations.
CA, TX, FL, NY, IL β highest online sales volumes. Most likely to trigger Nexus for Vietnamese sellers.
GA, NC, VA, WA, CO β growing enforcement. New audit programs targeting e-commerce sellers.
OR, MT, NH, DE, AK β no state sales tax. Sales here do not create collection obligations.
This is the exact sequence Vietnamese online sellers experience when they don't address Sales Tax early.
Sales are up, orders are shipping to customers in 15+ states. No one mentions sales tax. You focus on growth β TikTok, Amazon, your website are all performing.
You've passed $100,000 in sales in California, Texas, and Florida β but no one told you. The collection obligation started the moment you crossed the threshold. The clock is already running.
A state revenue department sends a letter. They've found your business through marketplace data. They're requesting 3 years of sales records and calculating back-taxes owed β plus penalties and interest.
Since you never collected from customers at the time of sale, you can't go back and ask them now. The full amount β taxes, penalties, and interest β comes out of your own savings. This commonly ranges from $15,000 to $80,000+ for active sellers.
A complete Sales Tax compliance system β so you never have to worry about an audit notice again.
We audit your transaction history and identify every state where you have an obligation β past and present. You'll know exactly where you're exposed before any state contacts you.
We register your business with the revenue department in each nexus state β handling all paperwork, permits, and state-specific requirements on your behalf.
We configure Shopify, WooCommerce, TikTok Shop, or your platform to automatically calculate and collect the correct sales tax rate from customers at checkout β by state, county, and city.
We handle your monthly, quarterly, or annual sales tax returns in every nexus state β filing on time, every time, so you never face late penalties going forward.
Already behind? We negotiate with states using their Voluntary Disclosure Agreement (VDA) programs β often reducing or eliminating back-penalty exposure before they audit you first.
As your business grows into new states, we track your thresholds in real time and alert you before you cross them β so compliance is always ahead of your growth.
Since 2013, Netfintax has helped Vietnamese-American small business owners navigate US tax law β in their language, on their schedule. We specialize in the exact platforms and industries you operate in.
Sales Tax compliance is not optional β but it doesn't have to be scary. We handle every step so you can focus on selling.
Available MonβFri, 8amβ5pm EST. In Vietnamese or English.