Solo founders evaluating AI bookkeeping in 2026 face three realistic options: a fully-managed AI-augmented service (Bench, Pilot), a software-led tool that does AI categorisation inside an existing accounting product (QuickBooks Live, Xero with Hubdoc), or a DIY stack (Claude/ChatGPT + a spreadsheet template). The fully-managed option scales when revenue passes ~$30K MRR; below that, the DIY stack with a 30-min monthly review beats both software-led and managed. The failure mode is paying for managed-service automation while still doing 80% of the categorisation yourself because the AI hasn't seen enough of your transaction patterns yet.

Practitioner-advisory read across the three 2026 solo-founder AI-bookkeeping options. Cited against current Bench, Pilot, QuickBooks, Xero, FreshBooks, Claude and ChatGPT pricing pages plus IRS Publication 583 baseline. Status partial because the $30K MRR threshold is editorial pattern across vendor case studies and operator reviews, not a measured firm-specific outcome; vendor pricing tiers also move quarterly. Below $30K MRR the DIY stack recommendation is the load-bearing call.