Cranston is AI tax prep and bookkeeping for CPA firms. Our tax agents prepare returns the way a strong staff accountant would: they read the source documents, work the return in your tax software, and hand your reviewer a return that holds up, with workpapers attached.
Cranston AI is a Y Combinator company in the Fall 2025 batch. Its directory entry describes it as: AI Tax prep and accounting software for CPA firms. The founders listed are Max Minsker (Founder/CEO), Sean O'Bannon (Founder/CTO) (Y Combinator directory entry, October 6, 2025).
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New accelerator entry · 2025-10-06 · the record
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Cranston is AI tax prep and bookkeeping for CPA firms. Our tax agents prepare returns the way a strong staff accountant would: they read the source documents, work the return in your tax software, and hand your reviewer a return that holds up, with workpapers attached. Our bookkeeping agents keep client books current all year, so tax season starts from clean numbers instead of cleanup. Prep and books are the start. We're building Cranston into the system a firm runs on: the place where prep, review, client requests, and the rest of the practice get done.
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Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News
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