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Every tax season, accountants across the US turn mountains of unstructured paperwork into completed returns. The work is largely manual, and it's burning out tax professionals. The CPA pipeline is shrinking; more than 120,000 accounting and audit roles sit unfilled each year, and business tax keeps getting more complex.
Most automation to date has gone after the simpler personal income tax return. Business tax, with its messy documents, shifting rules and review-heavy processes, has been difficult for legacy software to tackle.
AI and advances in large language models have changed the landscape. It can now do much of what consumes an accountant's day: reading documents, pulling numbers, reconciling them, flagging what doesn't fit, and, perhaps most importantly, knowing when to ask a human. The future is clear, and it’s impossible to see the accounting world of tomorrow looking the same as today. Byron is the answer.
Introducing Byron
Byron is an AI agent platform for business tax preparation. The platform helps CPA firms automate manual business tax workflows, from document intake through the generation of workpapers to review-ready output, enabling accountants to focus on review, judgment, and client service rather than manual preparation.
We recently led Byron’s US$6.5m seed round, with participation from Sorenson Capital, Liquid2 Ventures and Correlation Ventures.
Byron’s AI agents process complex tax documents, reconcile data and generate source-linked outputs while keeping accountants in control of the workflow. The platform integrates with existing systems, including Excel and tax software, and is built with enterprise-grade security and SOC 2 Type II compliance.
Byron’s model is designed so AI agents prepare the work while human accountants verify the outputs, with each extracted number source-linked and confidence-scored. This approach allows firms to focus on high-value review and judgment rather than manual tasks.
The Team
Co-founders Blaze O’Byrne and Wilm Kranz met on the first day of their Master's course in Computer Science at the University of Chicago. Together, they bring the perfect combination of technical expertise and commercial nous to attack this massive market. When we first met them over Zoom, we knew they had something special, so we got on the first flight to San Francisco to spend time with them. We were blown away, and the rest is history.
Byron, named after Byron Bay, a nod to co-founder Blaze’s Australian roots, is being built by a team of AI and accounting experts who previously worked at Amazon’s Artificial General Intelligence (AGI) team and Deloitte, bringing together experience developing large-scale AI systems with firsthand knowledge of how complex tax engagements are prepared and reviewed.
What’s next for Byron?
Byron has been working with a number of key design partners, including Chawla and Chawla and Canopy. Today, they come out of stealth to launch to the world, and we’re super proud to be partnering with them on their journey.
