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Luca IQ

Luca IQ is a YC Summer 2026 (S26) company. Based in Boston, MA, USA. Team of 5.

  • B2B
  • API
  • Infrastructure
  • AI
Website (opens in a new tab)

About Luca IQ

GPAgent's own fund-neutral profile, written from public information. Updated Oct 4, 2026.

Summary

Luca IQ builds tax software and an API-first tax engine for accounting firms and fintechs. It covers the full return workflow, from client document intake and automated workpaper preparation through CPA review, e-signature collection, and IRS e-filing, replacing the disconnected desktop tools and manual data re-entry that currently consume firm staff time. The underlying tax calculation and e-filing engine is also available as an API for fintechs building tax products.

Go-to-market

Accounting firms are the primary buyer, reached through a waitlist, with a developer-facing API path for fintechs building on top of tax infrastructure.

From the Y Combinator listing

How Luca IQ describes itself in Y Combinator's public directory.

API First Tax Engine for CPAs

Luca IQ is an API for deterministic tax calculation and an IRS Authorized e-filing engine - the foundation for accounting firms and fintechs building on tax.

Facts

Batch
YC Summer 2026 (S26)
Industry
B2B / B2B -> Finance and Accounting
Location
Boston, MA, USA
Team size
5
Status
Active
Stage
Early
Website
lucaiq.com (opens in a new tab)

Founders (2)

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