The SaaS founder's full guide to sales tax in the U.S.
A 50-state taxability map, sourced from each state's Department of Revenue, so you can find your exposure before your next investor does.
Most SaaS founders find out the wrong way.
Usually during diligence. A buyer's tax counsel runs the standard nexus questionnaire, and a number appears on a spreadsheet that wasn't on yours.
Sometimes it's $80K. Sometimes it's $1.4M. It is almost never zero.
The report below shows you where SaaS is taxable today, where it isn't, and where the rules are still moving. Every classification is cited to the state that wrote it.
50
states classified
18
that tax SaaS
14
founders get wrong
2026
edition, dated
The SaaS Sales Tax Map
U.S. — 50 states
Published by
Taxolio Research
Cited to 50 state
Departments of Revenue
Where should we send the PDF?
PDF in your inbox in under 60 seconds. No credit card. No sales call. One email.
What you get
One report. Three things you can act on this week.
A 50-state taxability map
Every state classified as Taxable, Not Taxable, Conditional, or No Sales Tax. The 18 states that tax SaaS, named. No hedging.
50 STATESThe 14 states founders get wrong
Rate, classification, and risk level for each. These are the states where the gap between what you assume and what the law says is widest.
14 HIGHEST-RISKA 60-second self-audit
Ten yes / no questions. A score at the bottom. You'll know your exposure level before you finish your coffee.
10 QUESTIONS“The danger isn’t the tax bill. It’s the diligence finding that re-prices your next round.”
What’s inside
Seven sections. One report.
Built to be read in one sitting and acted on in the same week.
The 50-state map
- —Which 18 states tax SaaS today
- —Which 13 states don't
- —The 15 states with conditional rules you need to read carefully
- —The 5 states with no sales tax at all
The 14 highest-risk states
- —Tennessee, Washington, Pennsylvania, New York, Texas (the big ones)
- —Plus Vermont and Louisiana, both of which started taxing SaaS recently
- —Current rate, how each state classifies SaaS, and the risk level we see in real diligence
Why this happens to almost every SaaS
- —The Wayfair decision and what it actually changed
- —Why SaaS got reclassified state by state without most founders noticing
- —The CPA blind spot that's costing founders six figures
The 4 nexus triggers
- —Economic nexus (the $100K rule, with the states that use different thresholds)
- —The remote employee trap
- —Conferences and trade shows
- —Affiliates and resellers
Citations
- —A direct link to the published guidance from every state Department of Revenue cited
- —You can verify every line yourself
The 60-second self-audit
- —A 10-question checklist
- —Score yourself
- —Know where you stand
A 30-day action plan
- —Four steps
- —None require a tax engine, a lawyer, or a budget
Some clients who trust Taxolio's expertise
The same team behind the report runs their compliance
When we expanded into the U.S, sales tax quickly became something we didn't want to get wrong. We had nexus in multiple states and needed it handled properly. Taxolio took care of registrations and filings and kept things running without us having to constantly think about it. It made a messy area feel manageable.
Taxolio has been a huge help as we've scaled our e-commerce business across multiple states. Their team made sales tax registration and ongoing compliance clear, structured, and stress-free. It's reassuring to work with a team that understands fast-growing DTC brands and handles the details properly.
Taxolio simplified U.S. sales tax compliance for our business in a way that finally made sense. Their guidance around registrations and filings removed a lot of uncertainty and saved us time internally. Having experts handle compliance allows us to stay focused on serving our clients.
Who’s using this report
Read mostly by the people on the other side of diligence
Finance leads
At Series A and B SaaS companies
Founders
Preparing for a raise
Fractional CFOs
And accountants serving software clients
Corp-dev teams
Running the other side of the diligence
If you’re somewhere on that list, you’ll get value from it.
Why this works
Why most “sales tax guides” are useless
- —Generic blog posts that explain Wayfair without telling you what to do
- —Tax-engine marketing dressed up as education
- —State-by-state PDFs from 2021 that no longer match current law
- —Advice from a federal CPA who doesn't track multistate sales tax (most don't)
- A current, dated map of where SaaS is actually taxable
- A direct link to each state's own published guidance
- A risk ranking based on what shows up in real diligence
- A self-audit you can run in under a minute
“Founders deserve to know what they actually owe. From the actual law. Without paying enterprise tax-engine prices to find out.”
What happens after you opt in
A short, useful sequence. Then it stops.
The report hits your inbox
PDF. No paywall, no upsell page in between.
A short note
The three states most founders skip past in the map but really shouldn't.
The 30-day walkthrough
What to do in the next 30 days, in more depth than the PDF version.
An optional invitation
Book a free 20-minute Exposure Review. We pull your top 5 revenue states and quantify your specific exposure. No pitch. You either need it or you don't.
“The cheapest time to fix sales tax exposure is before anyone is looking. The most expensive time is during diligence.”
Frequently Asked Questions
The questions we get before people opt in
You don’t have to do anything with this report. You can read it, forward it, file it.
But if you’ve been at this long enough to be reading this far, you already know what you’ll find when you score the self-audit. There’s a number in there with your company’s name on it, and the only question is whether you find it now or whether a buyer’s diligence team finds it for you.
After the report, you’ll get a one-time invitation to book a free 20-minute Exposure Review. We pull your top 5 revenue states. We map your specific exposure. We send you a one-page summary you can hand to your CFO, your board, or a buyer.
No pitch, no commitment. Either it’s useful or it isn’t.
Aamir
Taxolio Co-Founder
Free PDF · 2026 Edition
Find out where you stand.
Before someone else does.
Sent immediately. Cited to every state’s Department of Revenue.
No credit card. No sales call. One email.
This report is general information, not legal or tax advice. State rules change. For your specific situation, consult a qualified state and local tax professional.