About KnotTheory.ai
Privacy-first, agentic tax software — built in California, run where your data lives.
What We Build
KnotTheory.ai Inc. builds tax software in which the artificial intelligence does the work that has traditionally been billed by the hour. Our products share one tax engine across two very different deployments.
Tesseract Tax Cloud is the agentic platform CPA firms run their practice on — document collection, extraction, live estimates with cited research, e-signature and direct e-file with the IRS, for individual and business returns alike.
Tesseract-Tax and Tesseract-CorpTax put the same intelligence on a customer's own Mac or iPhone, where tax documents are read on-device and never uploaded at all.
Company
KnotTheory.ai Inc.
A California C-Corporation headquartered in Fremont, in the San Francisco Bay Area. Independent and founder-owned.
Authorized IRS e-file Provider
KnotTheory.ai Inc. is an Authorized IRS e-file Provider. Tesseract Tax Cloud transmits Forms 1040, 1065, 1120 and 1120-S directly to the IRS, with a compliant paid-preparer block on every signed return.
Privacy by Architecture
Our products run AI on-device or in zero-data-retention mode. Tax documents are encrypted end-to-end, and your data is never training data.
Research-Driven
The company publishes its foundational research openly — from graph neural network theory to applied cryptography — and builds products on top of it.