Aiwyn

Day-to-day leadership sits with the three co-founders: CEO Justin Adams oversees the company; Tanner Fritz runs the Payments and Experience groups; Pat Morrell leads Practice and Tax. The company has disclosed Bessemer Venture Partners as an institutional investor but has not shared board composition.

Functionally, both. The payments module is a fintech product — it handles invoicing, automated reminders, and digital payment processing. The other three modules (practice management, client experience, and tax preparation) are vertical SaaS, turning Aiwyn into a suite that aims to replace multiple point solutions inside a CPA firm.

Aiwyn positions Tax as a more modern, integrated system that connects preparation, review, filing, and client collaboration inside a single application rather than routing work through separate desktop and portal tools. In mid-2026, Aiwyn made Tax accessible through Anthropic's Claude, suggesting it is embedding an AI co-pilot layer inside the preparation workflow.

Aiwyn has not publicly described its money-transmission licensing or payment-processing architecture. The firm markets digital payment acceptance as a core feature, but the specifics of whether it acts as a merchant of record, partners with a bank sponsor, or relies on a third-party processor are not disclosed on the corporate site.

The company claims 800-plus firms as clients and publishes testimonials from directors and controllers at "Top 300" and "Top 500" firms, indicating a focus on the mid-market and upper-mid-market segments of public accounting. Aiwyn does not publicly call out a Big Four accounting firm as a customer.