Combinely joins Y Combinator X25

Combinely has been accepted into Y Combinator's X25 batch. This milestone validates something we have believed from day one: AI can fundamentally transform how tax professionals work, but only if it is built alongside the people who use it.

Tom Invernizzi

CEO

Built in Practice

We spent months embedded inside firms, working side-by-side with tax professionals to understand real workflows. Not observing from a distance. Not running surveys. Sitting in the trenches, watching pain points unfold in real time. That immersion shaped Combinely as it exists today, now live firm-wide at our first major client. The feedback has been direct: "You saved me 4 hours last night." "I'm never sending out a tax return unless I've used Combinely."

What Comes Next

As part of this next chapter, we are relocating to San Francisco and joining the YC community. Being close to other founders, moving faster through tight feedback loops, and accessing the Bay Area talent pool matters at this stage. We are focused on expanding Combinely to more tax firms and pushing what is possible at the intersection of AI and tax workflows.

No AI training on your data

What you share stays yours. It is never used to train or fine-tune any model.

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Our controls are independently audited against the Trust Services Criteria.

You approve everything

Coco prepares the work and flags what needs your judgment. Nothing is final until you approve it.

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Set Coco up in minutes. It does the preparation in the tools you already use — you review the work.

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2
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3
Review the work
Coco prepares, you approve — nothing is final until your firm signs it off.

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|Jan 15, 2025