Sales Tax on SaaS and Digital Products

Sales Tax on SaaS and Digital Products: Which US States Tax Them?

A practical guide for Australian software founders, app developers and digital sellers with customers in the United States

If you sell software, subscriptions, templates, courses or downloads to customers in the United States, here is a question that can quietly cost you tens of thousands of dollars: do you owe US sales tax on what you sell?

For many Australian digital businesses, the instinctive answer is no. After all, back home, exports are generally GST-free, and a single national system makes life simple. The United States works very differently. There is no national sales tax. Instead, each state sets its own rules, and in many cases cities, counties and special districts add their own layers on top. Whether your product is taxable can depend on what it is, how it is delivered, who buys it and where that buyer sits.

In this guide, we break down how US states treat SaaS and digital products, why so many sellers get caught out, and what you can do about it before a state tax authority comes knocking.

Why This Matters More Than Ever?

Prior to 2018, a seller typically had to have a physical presence, like an office, warehouse, or staff, within a particular state to be liable for sales tax obligations under the jurisdiction of the state. The change happened after the Supreme Court's ruling in South Dakota v. Wayfair. According to the judgment, a state could require remote sellers to remit sales tax based on economic nexus alone and without physical presence.

Ever since, almost all US states which charge sales tax have implemented the "economic nexus" standard. One of the most common thresholds is sales in the state amounting to US$100,000, but there are differences. When you reach the mark, it becomes mandatory to register, charge the tax, if necessary, and file taxes.

That's the tricky part about digital sellers: reaching the threshold would not matter if what you sell is taxable in that state. And when it comes to SaaS and digital products, it gets complicated.

The Core Problem: There Is No Single Answer

In the world of physical goods, most states tax tangible products, with common exemptions such as groceries or clothing in some places. Digital products do not fit neatly into those old categories, so states have taken very different approaches:

Some treat SaaS astaxable prewritten (canned) software, even though the customer never downloads anything.
Some treat it as a taxable digital automated service or data processing service.
Some treat it as a non-taxable service, because sales tax historically applied to goods rather than services.
Some tax certain digital goods (such as e-books, music and streaming) but not others.
Some change the answer depending on whether the buyer is a business or a consumer.

The result is that two identical customers in two different states can face completely different tax outcomes on the same subscription.

Understanding the Main Categories

Before examining the states’ treatment, it is important to note how the taxing authorities usually classify digital goods. Same item may be classified quite differently depending on the jurisdiction involved.

1. Software as a Service (SaaS)

Software as a service is a software program offered and hosted by the provider through an internet connection, normally for subscription. It includes various programs such as project management software, accounting software, CRMs and analytics dashboards. Some states tax it as software, while others tax it at all. There are states that tax it selectively based on its use like data processing software.

2. Digital Goods and Downloads

It refers to goods that are sold and downloaded by customers through internet connection. It includes e-books, music, movies, applications, templates, stock images, fonts and online courses among others. Different states classify different aspects of digital goods.

3. Streaming and Subscription

Streaming media such as videos and audio, as well as subscription services, may be taxable differently than downloading services. Some states tax streaming while others do not. Similarly, some states tax downloading services but not streaming, while some tax both.

4. Digital Services and Information Services

Some states tax "digital automated services" or "information services," which can include internet data access, research reports, or research subscriptions.

5. Online Learning and Training

The taxability of online education and training may vary depending upon the form of online learning.

Understanding the Main Categories

The following is a general illustration of the variation across the US. Tax laws change frequently, and the details matter, so always confirm the current position for any state before relying on it.

States Often Described as Taxing SaaS

A number of states are widely known for taxing SaaS or similar cloud-delivered software in some form. These have commonly included states such as New York, Texas, Washington, Pennsylvania and Ohio, among others. However, the way they tax it varies:

Some tax SaaS as prewritten software.
Some tax it under a data processing or digital automated services category.
Some apply a reduced taxable base rather than the full sale price.
Some apply different treatment when the buyer is a business using the product for its own operations.

In other words, even among states that do tax SaaS, you cannot treat them as one group.

States Often Described as Not Taxing SaaS

In the case of other states, SaaS tends to be a service that is not taxed. Some of the states that tend to provide an example include California, Florida, and Illinois. However, there is one pitfall involved. The problem is that an answer to the question from the perspective of the state does not mean that the question is solved from the point of view of local jurisdictions and certain products.

States Where the Answer Is "It Depends"

A third group applies different rules depending on the specifics, such as:

Whether the software is delivered electronically or on physical media
Whether the customer receives a license to download or merely access
Whether the product is used for business or personal purposes
Whether the service involves human involvement or is fully automated
Whether the product is bundled with other services

This is where most compliance mistakes happen. The product description on your website may not match how a state classifies it.

Why Australian Sellers Are Especially Vulnerable

Australian digital businesses face a few risks that local US sellers sometimes avoid.

The GST Mindset

Australia's GST system is destination-based but nationally uniform. Exporters can generally treat many overseas supplies as GST-free. That leads some founders to assume the US must operate on similar logic. It does not. US sales tax is a state and local system, and the burden of working out the rules falls on the seller.

Selling Through Stripe, PayPal or Your Own Site

Payment processors do not automatically calculate, collect or remit US sales tax for you. Collecting payment is not the same as collecting tax. If you sell directly through your own checkout, you are the one responsible.

Rapid Growth Without a Compliance Plan

A product that takes off in the US can cross multiple state thresholds in a matter of months. By the time you notice, you may owe tax in several states for periods when you were not registered.

Time Zones and Distance

Deadlines, notices and audit letters from US state agencies are easy to miss when you are on the other side of the world. Ignored letters turn small problems into big ones.

What Happens If You Get It Wrong?

The consequences of ignoring a sales tax obligation can be serious.

Back taxes: If you should have been collecting tax but were not, the state may assess the tax you failed to collect, for every period since your obligation began.
Penalties and interest: These can add significantly to the original amount.
Out-of-pocket liability: Because you did not charge customers the tax, you often cannot recover it from them after the fact. The cost lands on your margin.
Disrupted business: Audits, notices and registration issues can consume time and attention.
Customer and partner friction: Enterprise customers may ask for tax compliance evidence as part of vendor onboarding.

The good news is that many of these outcomes are avoidable with early action.

Common Mistakes To Avoid

These are the issues we see most often with international digital sellers.

Assuming B2B sales are always exempt. Some states exempt certain business purchases, but exemptions typically require valid documentation, such as a resale or exemption certificate. Without it, the burden of tax may remain on you.

Relying on the payment processor. Payment platforms process payments. Unless you have specifically set up and enabled a tax solution, they are not collecting and remitting US sales tax on your behalf.

Ignoring local taxes. Some states have local jurisdictions that add their own rates and, in some cases, their own rules.

Waiting for a notice. By the time a state contacts you, penalties and interest may already have accumulated. Voluntary disclosure programmes, where available, can sometimes reduce penalties, but they are generally most useful before you are contacted.

Bundling confusion. If you sell a taxable product together with a non-taxable service for one price, the entire bundle can sometimes become taxable. How you structure and price your offering matters.

Treating one state's rule as a national rule. What works for Texas does not work for California. Never generalise.

Key Takeaways

The US has no single sales tax system. Each state decides what is taxable and how.
SaaS and digital products are treated inconsistently. Some states tax them, some do not, and many apply special rules.
Economic nexus means you can owe tax without a physical presence. Thresholds vary by state.
Payment processors do not automatically handle the obligation. Check your set-up carefully.
Early action reduces risk. Back tax, penalties and interest are best avoided by acting before a notice arrives.
Rules change. Review your position regularly and confirm current rules before acting.

How Taxcart Can Help

Determining your US sales tax obligations doesn't have to be complicated. The process begins with determining where your clients are located and what your products are, and which states should concern you.

If you are an Australian company that sells software or digital products into the United States and you are uncertain about where you stand, TaxCart will assist you in evaluating your position, identifying those states that you need to focus on, and determining your way forward.

Wish to know where you stand? Contact the TaxCart team now and avoid all the complications around US sales taxes.

Legal disclaimer: This article is for informational purposes only and does not provide tax or legal advice. The laws of US states regarding sales tax laws vary often and depend upon individual circumstances.

Sales Tax on SaaS and Digital Products