Building a listed tool

Mark Faggiano

CEO of TaxJar at its 2021 acquisition by Stripe, named behind the TaxJar listing on Anchor Terminal.

CEO of TaxJar at its 2021 acquisition by Stripe

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What Mark builds

TaxJar C · Tax calculation & compliance
TaxJar is Stripe's US sales tax service for businesses that sell across states. Its REST API calculates tax for an order, looks up rates by address, records orders and refunds for reporting, and stores exempt customers.
CEO of TaxJar at its 2021 acquisition by Stripe, researched 28 October 2026 · the people behind it

Works with

John Collison Co-founder and President, Stripe
Patrick Collison Co-founder and CEO, Stripe

Questions

Who is Mark Faggiano?

Mark Faggiano is CEO of TaxJar at its 2021 acquisition by Stripe.

What does TaxJar (Stripe) make?

Anchor Terminal lists TaxJar from TaxJar (Stripe). TaxJar is Stripe's US sales tax service for businesses that sell across states. Its REST API calculates tax for an order, looks up rates by address, records orders and refunds for reporting, and stores exempt customers.

How are Mark's tools graded?

TaxJar is graded C, 57.7 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

Sources (3)

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.