Beyond Borders: What Small Businesses Need to Know About Sales Tax Nexus

There’s no doubt that running a business can be extremely exciting, but understanding taxes is a whole other story. One minute you’re shipping products or offering services across state lines, and the next you’re wondering: Do I have to pay sales tax in another state? For many small business owners, sales tax nexus can feel confusing, overwhelming, and honestly, a little intimidating.

The good news? Understanding the basics can save your business from penalties, surprise tax bills, and unnecessary stress later on. At FlexKeeper, helping entrepreneurs “wear fewer hats” is part of the mission. From bookkeeping and accounting to tax preparation and workflow solutions, the team helps small businesses stay organized, compliant, and focused on growth instead of paperwork.

What Is Sales Tax Nexus?

Sales tax nexus” simply means your business has enough connection to a state that the state requires you to collect and remit sales tax there. In the past, businesses generally collected taxes only in the states where they had a physical presence. That landscape has changed dramatically, especially for online service providers that operate remotely.

Now, many states enforce what’s called economic nexus, meaning you can trigger sales tax responsibilities simply by reaching a certain amount of sales revenue or number of transactions in that state. What does this mean for you if you own a business? You don’t necessarily need an office, storefront, or warehouse in another state to owe sales tax there.

Common Ways Businesses Trigger Nexus

It’s important to note that every state has its own set of rules and regulations, but below are some of the common ways that businesses trigger nexus.

Physical Presence

If you have a tangible connection to a state, it will trigger nexus. Below are some common examples:

An office or storefront
Employees or contractors
Inventory stored in a warehouse
Trade show participation
Temporary work locations

Even something simple like inventory through Amazon FBA could trigger nexus. Many business owners don’t realize that storing products in fulfillment centers located in multiple states may create additional tax obligations. If your inventory is moved or stored across state lines, it’s important to monitor where your products are located and whether the states where they’re stored require you to collect and remit sales tax.

Economic Nexus

The economic nexus is one of the biggest tax concerns for small businesses, as online sales continue to evolve more than ever before. Many entrepreneurs assume they only owe sales tax in the state where their business is physically located, but today’s tax laws often work differently.

Many states use thresholds like:

$100,000 in annual sales
200 transactions in a state

However, the exact thresholds vary. Some states have removed transaction-count rules entirely and only focus on revenue. Even smaller e-commerce businesses can trigger tax obligations without even realizing it. That’s why having a reliable tax professional in your corner matters more than ever before.

Are You Required to Pay Sales Tax Out of State?

One of the most common questions small business owners ask is whether they’re required to collect and pay sales tax in states where they don’t physically operate. The answer depends on your business activity, sales volume, and whether you’ve created nexus in that particular state.

If you meet the state’s nexus requirements, you generally must:

Register for a sales tax permit
Collect sales tax from customers
File sales tax returns
Remit the tax collected to the state

If you don’t have nexus, you typically are not required to collect sales tax there.

This is where many small business owners get confused. Selling to customers in another state does not automatically mean you owe sales tax in that state. The determining factor is whether your activity creates nexus.

Why This Matters for Small Businesses

There’s so much that goes into running a small business, and many owners overlook the importance of doing taxes correctly. Ignoring sales tax obligations can become expensive quickly. States are becoming increasingly aggressive about tracking remote sellers, ecommerce activity, and online transactions.

Potential consequences could include owing back taxes, penalties/interest, having state audits, and compliance headaches that will surely slow down positive momentum. Conversely, collecting sales tax incorrectly can also create problems. Bookkeeping professionals frequently warn business owners not to collect sales tax unless they are properly registered and required to do so.

Careful Attention For E-Commerce Businesses

Do you sell on online shopping platforms like Amazon, eBay, Shopify, or Etsy? Nexus rules can quickly become complicated or confusing. Some examples are listed below:

Amazon may collect and remit taxes in some situations as a marketplace facilitator
Shopify may require you to configure sales tax settings yourself
Multi-state sales can create filing obligations faster than expected

There should be proper systems in place to track as important thresholds get crossed. Staying proactive with your bookkeeping and sales tracking can help prevent missed deadlines, penalties, and unnecessary stress as your business continues to grow.

Stay Organized With Flexkeeper

A huge mistake many business owners make is waiting until tax season rolls around to get organized. Monitoring your revenue by state throughout the year helps you identify potential nexus issues before they become compliance problems. Accurate bookkeeping also ensures you have clean records if questions arise later. Flexkeeper is your reliable financial partner to help ensure nothing slips through the cracks.

At FlexKeeper, the goal is to help business owners reclaim time and reduce stress by handling the back-office details that often get pushed aside. Their team provides bookkeeping, accounting, tax preparation, payroll support, workflow solutions, and business financial planning designed specifically for growing businesses. Schedule a consultation to learn more about how we can support your business to thrive better than ever before.