AI-Ready Shopify Store Checklist 2025-2026: Your Complete Technical Guide for eCommerce Success
ChatGPT, Claude, Perplexity, Google's AI Overviews—these aren't future technologies.
If you're running a dropshipping business in 2025, understanding sales tax isn't optional anymore—it's mission-critical. Since the landmark South Dakota v. Wayfair Supreme Court decision in 2018, the sales tax landscape has been evolving faster than a cheetah chasing its prey across the savanna. And trust me, after years of helping entrepreneurs navigate the global eCommerce marketplace, I've seen firsthand how tax compliance can make or break a business.
The game has changed. States are hungry for tax revenue, thresholds are shifting, and the definition of "nexus" has expanded beyond anything we imagined five years ago. In 2025, Alaska eliminated its transaction count threshold, joining a growing movement toward simplified compliance. But don't be fooled—simpler doesn't mean easier.
According to recent data, U.S. state and local governments collected approximately $513.72 billion in taxes in just the first quarter of 2024. With states actively pursuing non-compliant online sellers, the penalties for getting this wrong can devastate your business. We're talking thousands in back taxes, interest, and penalties—money that should be fueling your growth.
Whether you're just launching your first dropshipping store or you're scaling to seven figures, this comprehensive guide will walk you through everything you need to know about sales tax nexus, who's responsible for what, how to avoid getting taxed twice, and what you absolutely must do to stay compliant in 2025 and beyond.
Let's start with the foundation: nexus. This legal term describes the connection between your business and a state that triggers your obligation to collect and remit sales tax. Before 2018, nexus was simple—if you had a physical presence in a state (store, warehouse, office, employees), you collected tax there. End of story.
Then came the Wayfair decision, and everything changed overnight.
Physical nexus still exists and is triggered when you have:
Here's where it gets tricky for dropshippers: In some states, having your supplier or dropshipping partner store inventory creates nexus for YOU, even if you never touch the product. States like Iowa have aggressive nexus rules where even traveling salespeople create obligations. Always verify where your suppliers are located and storing inventory.
Economic nexus is the big kahuna for online sellers. Post-Wayfair, every state with a sales tax (that's 45 states plus Washington D.C.) has enacted economic nexus laws. The concept is straightforward: if you sell enough goods or services to customers in a state, you've established a connection that requires you to collect sales tax—period.
This means you could be sitting in your Houston office (like me, aboard my yacht!), never set foot in California, but if you hit their economic threshold of $500,000 in sales, congratulations—you now have California nexus and all the compliance headaches that come with it.
The majority of states have settled on $100,000 in gross revenue OR 200 transactions as their economic nexus threshold. However, 2025 has brought some significant changes, and several states march to their own drummer.
| Threshold Type | States | Requirement |
|---|---|---|
| Standard Threshold | Most states | $100,000 in gross sales OR 200 transactions |
| Revenue Only (2025) | Alaska, Arizona, and growing | $100,000 in gross sales (transaction count eliminated) |
| Higher Thresholds | California, Texas, New York | $500,000 in gross sales |
| Mid-Range Thresholds | Alabama, Mississippi | $250,000 in gross sales |
This is where it gets messy. States calculate economic nexus differently:
For example, California includes gross receipts from all tangible personal property and digital products delivered to California customers. Arizona counts gross proceeds of sales of TPP and services, including exempt sales, but excludes marketplace facilitator sales and rentals.
Effective January 1, 2025, Alaska removed the 200-transaction requirement entirely. Now, remote sellers only need to exceed $100,000 in gross sales to establish economic nexus. This simplifies compliance dramatically but means more sellers will trigger nexus sooner. If you're selling to Alaska, monitor your sales closely!
Before we dive deeper into who owes what, let's establish exactly what dropshipping is and why it creates such tax complexity.
In a traditional dropshipping model, there are three parties:
Here's how a typical transaction flows:
In dropshipping, there are actually TWO transactions happening:
This should be a tax-exempt wholesale transaction. You're purchasing goods for resale, not for your own use. Your supplier shouldn't charge you sales tax—but they need proof.
This is the retail transaction. If you have nexus in the customer's state, YOU must collect and remit sales tax on the full retail price ($100, not just your $50 profit).
The challenge? All three parties could be in different states with different tax rules. Your supplier might have nexus where you don't, or vice versa. This is where confusion—and double taxation—often happens.
The golden rule in U.S. sales tax: Sales tax is imposed on the final consumer. The retailer (that's you) is generally responsible for collecting tax from customers and remitting it to the state. But dropshipping muddies the waters.
As the retailer in a dropshipping relationship, you are primarily responsible for:
Your supplier (the dropshipper) has different obligations:
Suppliers are understandably nervous about accepting resale certificates. If they accept a fraudulent certificate, THEY'RE liable for unpaid sales tax. That's why some suppliers refuse certificates or only accept their own state's certificates. This can cause friction and potentially double taxation if not handled properly.
Customers have an obligation too, though it's rarely enforced:
One of the biggest nightmares in dropshipping is double taxation—paying sales tax to your supplier AND collecting it from your customer. This destroys your margins and creates accounting chaos. The solution? Resale certificates.
A resale certificate (also called a resale exemption certificate or reseller's permit) is a document that proves you're purchasing goods for resale, not for personal use. It tells your supplier: "Don't charge me sales tax—I'm going to resell this and collect tax from my customer."
Without Certificate: You pay supplier $50 + $3.50 tax (7%) = $53.50. You collect $100 + $7 tax from customer. Your profit: $46.50, but you're out the $3.50 paid to supplier.
With Certificate: You pay supplier $50 (no tax). You collect $100 + $7 tax from customer. Your profit: $50. You remit $7 to the state.
The certificate protects your margins and prevents double taxation!
There are three main types of resale certificates you need to know about:
This is crucial for dropshippers. Not all states play nice with out-of-state resale certificates.
These states require you to register and obtain their state-specific resale certificate:
If your supplier is in one of these states, you'll need to register there to get a valid resale certificate—even if you don't have economic nexus yet.
Misusing a resale certificate is fraud and can result in severe penalties, back taxes, and even criminal charges. Only use certificates for inventory you'll resell!
Unfortunately, this happens. Some suppliers, especially large retailers like Target, actively discourage or refuse resale certificates because they don't want to encourage resellers. Here's what to do:
2025 has brought several significant changes to the sales tax landscape. Here's what you need to know to stay compliant:
The biggest change this year comes from the Last Frontier. Effective January 1, 2025, Alaska eliminated the 200-transaction threshold requirement. Now, remote sellers only need to meet the $100,000 gross sales threshold to establish economic nexus.
Before 2025: You needed $100,000 in sales OR 200 transactions to trigger Alaska nexus.
Starting 2025: Only the $100,000 sales threshold matters. No more tracking transaction counts!
Impact: This simplifies compliance but means more sellers will hit the threshold sooner if they have high-value, low-volume sales into Alaska.
Alaska is part of a growing movement. More states are recognizing that transaction-count thresholds create unnecessary administrative burden. The trend is moving toward:
All 45 states plus D.C. with sales tax now have marketplace facilitator laws on the books. In 2025, we're seeing:
States lost billions in uncollected sales tax before Wayfair. Now they're making up for lost time. In 2025, you can expect:
The IRS and state tax authorities are sharing data more than ever. If you think you can fly under the radar, think again.
Keep your eye on these states for potential changes:
| State | What's Changing | Action Required |
|---|---|---|
| Alaska | Transaction threshold eliminated | Monitor sales volume only |
| California | Stricter marketplace facilitator enforcement | Verify Amazon/marketplace compliance |
| Texas | Enhanced audit procedures for online sellers | Ensure perfect record-keeping |
| New York | Expanded nexus definitions | Review all business activities in state |
| Florida | Increased penalty enforcement | File on time, every time |
If you're selling through Amazon, eBay, Etsy, Walmart, or similar platforms, marketplace facilitator laws are a game-changer. But they don't eliminate all your responsibilities.
A marketplace facilitator is a platform that:
Think Amazon, eBay, Etsy, Walmart Marketplace, Facebook Marketplace (for some sales), and similar platforms.
In all 45 states with sales tax, marketplace facilitators must collect and remit sales tax on behalf of their third-party sellers once they hit the economic nexus threshold. The marketplace—not you—is responsible for:
If you ONLY sell through marketplaces like Amazon, you may not need to register for sales tax permits in most states. The marketplace handles everything. This is a huge burden lifted for small sellers!
Marketplace facilitator laws only apply to sales THROUGH THE MARKETPLACE. If you also:
Then YOU are still responsible for collecting and remitting tax on those sales in states where you have nexus. You can't rely on Amazon for your entire tax compliance!
Even though Amazon collects the tax, marketplace sales still count toward YOUR economic nexus calculation. Here's why that matters:
If you're selling on both Amazon AND your Shopify store, here's what happens:
If you're using Amazon FBA or dropshipping through Amazon, marketplace facilitator laws apply. But there's a twist with traditional dropshipping:
Alright, let's get practical. Here's your roadmap to sales tax compliance as a dropshipping business:
Don't try to manage sales tax manually. The complexity will bury you. Here are solutions that integrate with most eCommerce platforms:
| Solution | Best For | Key Features |
|---|---|---|
| TaxJar | Small to mid-size sellers | Auto-calculation, reporting, filing services, economic nexus monitoring |
| Avalara | High-volume or complex businesses | Enterprise-grade accuracy, certificate management, international support |
| TaxCloud | Budget-conscious startups | Free basic tier, SST integration, simple setup |
| Shopify Tax | Shopify-only sellers | Built-in, free for Plus users, automatic updates |
| Quaderno | International sellers | Handles VAT, GST, and US sales tax; invoicing included |
Let's walk through specific scenarios so you know exactly who's responsible in different situations.
You: Based in Texas, no nexus in California
Supplier: Based in Florida, no nexus in California
Customer: Located in California
What Happens:
Your Action: Monitor your CA sales. When you hit $500,000, register and start collecting!
You: Based in Texas, no nexus in Ohio
Supplier: Based in Ohio, has nexus there
Customer: Located in Ohio
What Happens:
Critical Issue: Ohio may not accept your Texas resale certificate. You might need to register in Ohio just to get a valid certificate, even though you don't have economic nexus yet!
You: Based in California, hit $500,000 in NY sales (have NY nexus)
Supplier: Based in California, no NY nexus
Customer: Located in New York
What Happens:
This is the ideal scenario! Clean and simple.
You: Based in California, have nexus in Texas
Supplier: Based in Texas, has nexus there
Customer: Located in Texas
What Happens:
Critical Action: Provide your Texas resale certificate IMMEDIATELY to avoid being charged. You're both registered in Texas, so this should work smoothly.
You: Selling widgets on Amazon and your Shopify store
Amazon Customer: Located in Washington
Shopify Customer: Located in Washington
Your Status: Have nexus in Washington from combined sales
What Happens:
Key Point: Your sales tax software should handle this automatically, excluding marketplace sales from your returns.
You: Have nexus in multiple states but haven't registered
What Happens:
Consequences:
How to Fix: Stop everything and register NOW. Many states offer voluntary disclosure programs with reduced penalties if you come forward before they catch you.
Use this comprehensive checklist to ensure you're covering all your bases. Print it, save it, review it quarterly!
Look, I know sales tax compliance isn't sexy. It's not why you got into eCommerce. You started your dropshipping business to create freedom, build something meaningful, and generate income on your terms. The last thing you want to worry about is arcane tax regulations and filing deadlines.
But here's the truth I've learned coaching hundreds of entrepreneurs to seven-figure success: proper tax compliance is not a burden—it's a competitive advantage.
While your competitors are ignoring sales tax, hoping they won't get caught, you'll be building a legitimate, scalable business that can withstand audits, attract investors, and eventually sell for top dollar. Clean tax compliance is one of the first things buyers look at during due diligence.
2025 has brought changes that simplify some aspects (goodbye, transaction counts!) while ramping up enforcement in others. States are getting smarter, sharing data, and pursuing online sellers more aggressively than ever. The era of flying under the radar is over.
Remember, living on my yacht here in Houston didn't happen by accident. It happened because I treated my business like a business—with proper systems, compliance, and planning. You can't build a seven-figure eCommerce empire on a shaky foundation.
Sales tax compliance is part of that foundation. Master it now, and you'll thank yourself later when you're scaling without fear of audits, when you're sleeping soundly knowing everything is in order, and when you're selling your business for maximum value.
The path to entrepreneur heaven isn't just about revenue—it's about building something sustainable, legitimate, and valuable. And in 2025, that means getting your sales tax house in order.
If you're feeling overwhelmed, that's normal. This stuff is complex. Here are your next steps:
You've got this. Sales tax is just another challenge to conquer on your entrepreneurial journey. Approach it systematically, use the tools available, and don't try to do everything manually. Your time is better spent growing your business than calculating tax rates.
Now go forth and sell with confidence, knowing you're building your empire on solid ground!
Veronica Jeans
eCommerce Business Consultant & Shopify Expert
Teaching from my floating office in Houston, Texas