TaxJar
👤 Mark Faggiano (Second-time tax founder: sold FileLater (tax extensions) in 2010, so he saw the sales-tax mess coming and built early.)🌐 site𝕏
A single Supreme Court ruling turned a nice-to-have tax tool into a legal must-have for every US online seller.
Will it work? · our read
Timed the law. Faggiano bet on a boring, fragmented tax problem in 2013 and stayed profitable, so when Wayfair made it mandatory in 2018 he owned the market and sold to Stripe on his terms.
01How the money moves
Online seller connects Shopify, Amazon or Stripe
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TaxJar tracks nexus, calculates and auto-files tax
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Seller pays a monthly SaaS fee ($39-99/mo)
02The numbers
23,000+Statedbusinesses at acquisition
2021-04
the sentence on the page
tax compliance effortless for businesses of all sizes. TaxJar today Eight years in, we now help more than 23,000 businesses like yourself become and remain compliant. Companies like Curology, Misfits…
Revenue never officially disclosed; figures are press/founder-reported, not filings.
Bootstrapped to about $20M ARR, then a reported $850-900M sale to Stripe (2021).
🔒
You have the verdict. Members get the work behind it.
- The CENTS scorecard — where it's strong, where it's soft
- The founder's key move, and the counter-move
- How it could die — the evidence, and how sure we are
- The case against our own call
- A 🚀 launchpad prompt — the case, as a plan for your business
We rate our own confidence — and argue against ourselves. Nobody else in this category does.
Sources always public on all 560 cases · cancel anytime · 14-day refund
See a full teardown, free → ImportYetiSourcesSources last checked 25 August 2026
Stripe newsroom -- TaxJar acquisition (2021)Axios -- inside the reported $850-900M Stripe/TaxJar dealVentureBeat -- TaxJar's $60M Insight roundLatka -- TaxJar metrics (third-party est.)TaxJar -- About (customers, founding)
Revenue was never officially disclosed. The about-$20M ARR figure is founder/press-reported (MacLeod podcast, SaaStr context) around the 2019 Insight round, not a filing -- so EST, verified false. The $850-900M exit is Axios-reported; Stripe never disclosed terms. Latka lists a stale $2.8M ARR (2021) that contradicts a $175M valuation and $60M raise, so I discount it. Wayfair's impact, the $60M/$175M round, the "never raise again" quote, and marketplace-facilitator erosion are all documented. We never score you.