Admiin

Admiin is an AI-native workflow platform for accounting firms, founded in 2023 by Darren Hosiosky, Brad Sewitz, and Dylan Westbury. Based in Sydney, Australia, it streamlines administrative tasks between firms and clients, including document collection, client verification, e-signing, and ATO payments. The platform serves over 2 million taxpayers and has processed more than $600 million in tax payments to the ATO. In October 2026, Admiin was named a finalist in the AI Innovator - Start Up category of the Australian AI Awards 2026.

• AI
• Fintech

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