# Rational

Accounting firm run by AI agents, from client intake through IRS filing.

Layer: Ledger & ERP, AI-native accounting firms. Page: https://therebundler.com/stack/c/rational

- Also covers: Bookkeeping & accounting services
- Best for: SMB
- Founded: 2026
- HQ: San Francisco, US
- Latest funding: Y Combinator (S2026)
- Status: Active
- Website: https://rational.to
- Pricing: Collecting
- Works with: Collecting
- Time to go live: Collecting
- Founders: Collecting

Source: https://www.ycombinator.com/companies/rational. Last verified: Collecting.


Compare with: [Modus](https://therebundler.com/stack/c/modus.md), [Afternoon](https://therebundler.com/stack/c/afternoon.md), [Last Accounting Company](https://therebundler.com/stack/c/last-accounting-company.md), [Minerva](https://therebundler.com/stack/c/minerva.md), [Billow](https://therebundler.com/stack/c/billow.md), [Current](https://therebundler.com/stack/c/current.md)