Fifteenth provides AI-driven tax workflows, customized scenario modeling, an AI-powered document vault, and one-click integrations with enterprise and fintech platforms to serve complex financial reporting needs. The service offers unlimited, year-round tax advice and proactive quarterly planning led by seasoned CPAs, with flat-fee pricing starting at $1,000 per year. Fifteenth focuses on optimizing equity events (ISOs, RSUs, NSOs), liquidity events (IPOs, acquisitions, tenders), partnership K-1s, and stock trading tax strategies. The company reports employees from Nvidia, Rippling, and Figma have saved $10–20k on average using its tailored strategies, with some customers saving as much as $100k. Co-founders include CEO Ankur Dahiya (formerly at Rippling, Flexport, X, and Meta) and Chief Tax Officer Laura Moreno (formerly at PwC and Carta). The company said the announced seed funding is a key step in scaling its AI-enabled tax preparation and always-on support.

Total raised

$8M

Funding rounds

1

Latest round

Seed

Latest activity

Feb 2025