
Sam Ross
@SpamRoss
Followers
3K
Following
14K
Media
238
Statuses
2K
Co-founder/CEO @Numeral (YC 23), the fastest, easiest way to stay compliant with US sales tax and global VAT. Trusted by 2,000+ ecommerce and SaaS businesses.
SF & LA
Joined March 2010
I’m thrilled to share that @numeral has raised a $35M Series B, led by Mayfield, at a $350M valuation! Turns out, sales tax and VAT have gotten so complex that we need AI and millions of dollars in VC funding to make it simple again. This brings us to $57M in funding, including
62
45
516
Friendly reminder: In Texas, deodorant with antiperspirant is taxable. Deodorant without antiperspirant is not. Follow me for more delightful tidbits from the tax code.
2
0
5
Took Numeral to the G2 fair this fall and came home with 2 badges. 🐐 🏅 High Performer 🏅 Easiest To Do Business With Always nice when the work we put into making sales tax painless shows up in reviews. Big thanks to our customers for the support - you’re the reason we get to
0
1
2
PSA: If you sell ads, build websites, run IT projects, or even place temp staff in Washington… the state now requires you to charge sales tax. Starting October 1, 2025, the state’s new law (ESSB 5814) makes a whole slate of service businesses responsible for charging sales tax.
0
0
1
Our 1st customer paid us $75 per filing. Our 10th customer paid us $75 per filing. Our 11th customer paid us $75 per filing. Our 101st customer paid us $75 per filing. Our 1001st customer paid us $75 per filing. Our 1002nd customer paid us $150 per filing because they
11
1
315
We started as… an Excel spreadsheet. Today, I’m excited to share that @numeral has crossed 2,000+ customers, from @ridgewallet to @eightsleep, Manus, Graza, Lucy, Grüns, Mike’s Hot Honey, Kitsch, and so many more. 🎉 Sales tax is painful. A terrible waste of time for growing
1
1
13
In December 2022, right after ChatGPT launched, I noticed a rival CEO hiring for an interesting role. Data labeler. As far as I could tell, they were training a fancy new model and needed “sales tax experts” to tell it what was good tax advice and what was bad. I dropped what
0
0
2
If you want to see an AI agent work the worst job on the planet, watch as Numeral’s tax agent navigates a state sales tax portal. Every time you remit sales tax, you basically have to navigate portals like this. I say “like this” because there are 50 states and 190+ countries,
4
2
30
A top-tier VC one passed on me because I didn’t dream big. This was over a decade ago, and I was pitching my idea for a startup. My pitch was simple: one slide, one sentence. “Picture this: $1 billion.” I was feeling pretty good about it. Who wouldn’t want a billion dollars?
2
0
5
Two Airbnb legends (and Numeral investors!) Go buy @HamelHusain’s course now!
So many people talking about AI evals. @HamelHusain and @sh_reya show me how to actually build one. Live. Hamel and Shreya teach the world’s most popular course on evals, and have long been at the forefront of this emerging and important new skill for AI product builders. I'm so
0
0
2
Twice this week founders DM’d me in full panic. Both were in acquisition talks. Both had millions in uncollected sales tax show up in diligence. Both only realized it when the buyer’s due diligence team flagged it. That balance doesn’t disappear btw. It comes straight out of
1
0
2
I had an incredible time chatting with this stacked panel of finance leaders, and thankfully, no one asked me to calculate the dinner’s sales tax by hand. Our partners at @SequenceHQ_, @RunwayCo, and @Meet_campfire brought together finance leaders last week in SF to chat about:
0
1
5
Can’t tell you how many times I’ve seen this…
I canceled avalara nearly 2 years ago. I still get emails about renewing. They act like the account isn’t canceled. I reply every time with proof of canceling 2 years ago. Apparently my account is at risk of suspension if I don’t pay. Avalara is truly the worst saas I’ve
0
3
6
Had a blast with @johncoogan and @jordihays on @tbpn! Can confirm the gong is even better in person!
3
3
144
I’ll be in-studio with @tbpn around 1:30PM PT today to talk about @numeral's $35M Series B - tune in! Excited about this @johncoogan and @jordihays!
IN NEWS: @numeral raises a $35 million Series B led by Mayfield. Co-founder & CEO @SpamRoss will be joining TBPN live in the Ultradome at 1:30pm PT to break it all down.
0
1
8
Pretty cool for the world’s most boring AI company! Huge thanks to @Nasdaq and @MayfieldFund for helping us mark this milestone in a big way! And thank you to the more than 2,000 @numeral customers who helped make this moment possible. We love handling your sales tax and VAT
0
2
9
Beyond excited to see @numeral's $35M Series B featured in TechCrunch! Thank you, @MTemkin, for telling our story and covering our new round of funding, led by @MayfieldFund with participation from @benchmark, @ycombinator, @uncorkcap, and @mantisVC. 👉 https://t.co/rDlwaDWHcs
1
2
12