Ardius

Ardius is a software company based in Brea, California, founded in 2018.

It specializes in automating R&D tax credit processes and providing tax-compliance technology. Acquired by Gusto in June 2021, Ardius operates as a stand-alone business, focusing on helping businesses, particularly startups and accounting partners, maximize their R&D tax credits. The company offers a cloud-based R&D tax credit management platform that automates the identification and optimization of tax credits using payroll and accounting data. Its services include tax compliance support, preparation of study materials, and expert-backed verification reports. Ardius integrates with partner systems, including Gusto, to enhance the accuracy of tax-credit calculations and streamline the workflow for managing current, prior, and future tax credits.