AI tools and subscriptions may be subject to sales tax depending on the state, how they’re delivered, and how they’re classified. Sellers should check where they have nexus and which tax rules apply, including California and Colorado’s software tax changes taking effect Jan. 1, 2027.
The global artificial intelligence market is expected to hit $4.8 trillion by 2033, up from $189 billion in 2023. Both the technology and demand are significantly outpacing regulatory developments, including local sales tax rules on whether AI is taxable.
Without an established framework for deciding whether AI is subject to sales tax, many jurisdictions across the U.S. are using existing rules for software or other digital products taxability to determine when AI should be taxed.
For example, while Indiana says an AI chatbot subscription isn't taxable, Kentucky's rules say AI-powered software is subject to sales tax. Not all states have clear answers, and in some, the rules have already evolved or likely will over time.
The table below shows key decisions state and local governments have made on the tax treatment of AI as of October 2026.
States often treat AI as software as a service (SaaS), meaning customers access it online through a subscription instead of downloading it. Other states treat it as prewritten software, meaning off-the-shelf software built for many buyers instead of one.
This creates imperfect rules and major variations in how states tax AI. Sales tax rules for digital goods and software subscriptions already differ by jurisdiction, so the AI component only adds another layer of complexity.
Taxability may also change depending on how AI is delivered (remote access vs. downloaded) and whether AI is treated as software, as a data processing service, or a nontaxable service.
This guide covers why states disagree, key state rulings, how chatbots and subscriptions are taxed, AI services vs. AI products, and what AI sellers should do.
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AI is subject to sales tax in some states.
No states currently have an explicit law establishing sales or use tax rules for AI. As a result, states often apply the rules originally written to govern the taxability of software.
This means whether AI is taxable depends on location, classification as a digital product or service, delivery method, and use case.
Traditionally, sales tax applied to tangible goods. However, as digital goods have become a growing share of the economy, some states have moved toward taxing them, at least in certain forms. The laws continue to evolve even in this area, despite decades of software sales.
Because AI is a new technology, no state has yet established a sales tax regulation that treats artificial intelligence as a separate product or service category with its own tax rules.
Instead, states have generally begun to apply existing rules written for software and digital products.
Most follow the same logic they already use for SaaS. If a state taxes SaaS, AI delivered like SaaS is usually taxable. If it doesn't, AI usually isn't.
Numeral's guide to sales tax on SaaS by state shows how each state treats SaaS for tax purposes.
Unfortunately, the rules for when software is subject to sales tax are complex, and no uniform standard applies across jurisdictions. Even within individual states, taxability may depend on specific factors, like how the software is written or delivered.
For example, in many states, the taxability of software and digital products varies based on whether:
Other states use different rules to determine whether AI is taxable. AI may also be treated as:
States may also use the "true object" test when classifying AI as either a taxable product or a nontaxable service. This test looks at the essence of the transaction, or the customer's main purpose when making the purchase.
Similar to the way the true object test is applied, the rules for when AI is taxed may hinge on whether the AI is the product the end user is buying, or whether the AI is a feature of the product.
In certain cases, it is clear that AI is the product. Examples include:
In other situations, the AI may be a feature in a separate product. For example, this could include AI summaries of upcoming projects inside of a project management tool.
If AI is a feature, then the tax rules for the underlying product will determine if the AI is taxable. For example, under Kentucky's guidance, SaaS is taxable. The fact that the SaaS happens to include AI components does not change this general rule.
If a bookkeeping SaaS adds an AI assistant, its tax status doesn't change. It's still taxable in states that tax SaaS and still exempt in states that don't. The same applies to legal tech software, EdTech software, or any program or tool with an AI component.
If the AI is a standalone product, however, the state's applicable rules must apply to the AI itself, rather than to the product or digital good the AI happens to be part of.
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As of October 2026, a small number of states have issued regulatory guidance on whether AI is taxed. In other states, preexisting rules are simply applied to AI. Here's how different jurisdictions have addressed the taxability of AI.
Three states have official guidance from the Department of Revenue or another local tax authority that expressly addresses AI. Chicago's local taxing authority also has regulations in place. These include:
The fact that neighboring states, and even cities within a state, have different tax rules applied to AI shows how complex this issue will be for companies in this industry.
Although these states lack specific regulatory guidance on AI taxability, the following locations have begun taxing AI under software and data processing rules.
While Illinois doesn't tax SaaS at the state level, Chicago's Personal Property Lease Transaction Tax (PPLTT) treats cloud software as a lease subject to tax.
Illinois Policy reported in 2023 that this rule applies to paid subscriptions to AI tools, like ChatGPT's premium plan. The rate increased to 15% effective Jan. 1, 2026, so sellers must ensure full compliance to avoid significant liability risk.
Chicago's local rule demonstrates the risk for sellers. Those who checked only statewide rules to determine whether AI is taxable may have exposed their company to significant liability for uncollected tax on AI sales.
A growing number of states have started taxing SaaS, including several jurisdictions where new rules take effect in 2027. Because AI is often treated as a type of SaaS, these states will now likely tax AI at least in certain circumstances.
California’s SB 122 extends sales tax to electronically delivered digital products and SaaS starting Jan. 1, 2027. This law still exempts custom software.
In September 2026, the CDTFA released draft emergency regulations clarifying that custom software must be prepared to a single customer's special order.
Under the draft, training an AI tool on specialized information, such as California tax law, doesn’t make it exempt custom software, even if its outputs seem individualized.
California is the largest market for many AI companies, so this will have substantial financial ramifications.
Colorado’s HB 26-1223 makes computer software "delivered by any means" taxable starting Jan. 1, 2027, including downloads and remote access software (SaaS).
However, the law excludes custom software and B2B licensed software that's controlled by a negotiable license agreement or has been developed for a particular user. (Click-through terms don't count.) Home rule cities may also impose tax on SaaS, including AI tools.
AI companies that don't currently charge tax may need to start in 2027 in these jurisdictions. Other states may follow suit.
Free versions of AI tools, including ChatGPT and other chatbots, are not subject to sales tax because there is no transaction to tax.
However, subscriptions to paid versions of chatbots, AI-writing assistants, AI-image tools, and other AI software services and programs are typically treated like SaaS. This means they are taxable where SaaS is taxable, and not subject to sales tax where SaaS is sold tax-free.
Businesses that use AI for qualifying purposes may avoid paying tax by submitting an exemption certificate. For example, the following guidelines explain OpenAI's exemption process.
AI sellers must keep these exemption certificates on file and ensure they are valid and apply to the specific transaction, to avoid company liability for uncollected tax on taxable sales.
When AI providers charge sales tax, they will need to understand sourcing rules. Generally, they will charge sales tax based on the buyer's billing address. This means sellers must understand their tax obligations in all locations where they do business.
If sellers don't understand local rules or aren't aware that a rule change makes AI taxable in a new jurisdiction, they could be liable for the tax they should have collected.
If a buyer isn't charged tax because the seller lacks nexus, but the buyer owes tax on AI products under its state rules, the buyer may have to report the transaction and pay use tax.
For example, if a marketing agency in Kentucky pays $60 per month for an AI writing tool, that $720 a year ($60 × 12) is a taxable transaction. If the seller doesn't collect Kentucky sales tax at Kentucky's 6% rate, the agency could owe $43.20 in use tax ($720 × 6%) to the state for the year.
Buyers and sellers also need to understand the different rules that may apply to AI services vs. AI products, as this could affect tax liability.
Companies selling both a subscription and setup or consulting services may face a bundling problem if they sell taxable and nontaxable items for a single, nonitemized price. In some states, this makes the entire transaction taxable.
Separately stating the charges can help sellers avoid this outcome.
If you sell AI, you must put a protocol in place to manage sales tax compliance and reduce your liability risk. Here are the key steps to protect your company from audits and ensure you are following sales tax rules that apply to your business.
You have sales tax obligations in a particular state only after you have established sales tax nexus locally. You may establish either physical or economic nexus, and AI companies are subject to the same nexus rules as any other sellers.
AI companies may cross the economic nexus thresholds quickly because of fast growth and nationwide customers.
Numeral offers free nexus monitoring to help you determine when you are approaching or have crossed a threshold so you can take action.
In each state where you have sales tax nexus, you will need to determine how your AI product or service is treated under the local tax rules.
Options include being treated as SaaS, data processing, or a digital product or service. Keep documentation for your reasoning in case of an audit, and always check state-specific rules for product classification.
If you are uncertain about how your product should be classified, consider a private letter ruling in any state where the rules are unclear. This means asking the Department of Revenue for guidance. Indiana's ruling on the taxability of AI came through this process.
Numeral handles product classification for you using powerful AI software. We map each product to the correct tax category, so we apply the right rules to every transaction in every state.
Rules are continuously evolving. California and Colorado are just the latest states to establish new laws taking effect in 2027. You will need to monitor for regulatory changes that affect the taxability of your AI product or service.
Set a reminder to review your products' taxability at least once a year and before you start selling in a new state.
If you’d rather focus on running your AI company than tracking state sales tax rules, Numeral can handle compliance for you.
Numeral’s free nexus monitoring requires no contract. It integrates with Stripe and other billing platforms AI companies use, so your sales are tracked automatically across every channel.
Numeral handles the rest of the process, too: registering your business in new states, calculating tax on every transaction, and filing and remitting your returns. We charge a flat rate of $75 per filing and $150 per registration, with no monthly subscription or long-term contract.
Tax experts review every filing before it’s submitted, and they are backed by the Numeral Guarantee, so if your sales tax isn't filed on time, Numeral covers the penalties and interest.
Thousands of e-commerce and SaaS companies already rely on Numeral to stay compliant. Get started with free nexus monitoring, or book a demo today.
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