Soraban

Soraban is an AI-native tax workflow platform for accounting firms, automating the unbillable admin work of tax season - client intake, document collection, workpaper preparation, data entry into tax software, and final delivery. Founded in 2021 by engineer and former accounting-firm owner Enoch Ko and part of Y Combinator's Winter 2021 batch, the company is used by hundreds of CPA firms across the U.S. and Canada and closed a Series A led by Altos Ventures in August 2025.