
AI Employees for In-House Enterprise Accounting
Rational builds AI employees for in-house enterprise accounting teams. Enterprises process high volumes of complex, multinational transactions that require broad expertise in international tax and accounting. Powered by the most accurate tax model in the world, we save teams enormous time on tax and close work while also eliminating unnecessary audit costs. Rational is a Y Combinator company (Summer 2026). YC-listed status: Active.