YC Summer 2026 (S26) company

Rational

AI Employees for Accounting

b2boperationsenterpriseaib2b3 public signals

About Rational

Rational builds AI coworkers for accounting firms. Our agents onboard themselves to the firm, build a company brain, and do the work, from month-end close to tax prep. In addition, they follow up with clients and communicate with the right members of your team.

Public traction evidence

Each signal links to the public source used for attribution.

  1. X

    Imagine saying no to customers (and revenue) because you can’t keep up with the work. In accounting, 300k professionals have left the field & 3 out of 4 could retire by 2030. To...

    Imagine saying no to customers (and revenue) because you can’t keep up with the work. In accounting, 300k professionals have left the field & 3 out of 4 could retire by 2030. To...

  2. YouTube

    Rational - Launch

    Visit rational.to/book-demo to stop saying no to business growth.

  3. X

    We just launched the future of accounting work as part of @ycombinator's S26 batch. Reach out if you're an accounting firm leader looking...

    We just launched the future of accounting work as part of @ycombinator's S26 batch. Reach out if you're an accounting firm leader looking to adopt AI at scale and grow your revenue. https://lnkd.in/p/g8sQf4Gd