Peter McCarroll

Peter McCarroll

Founder of Fuel Accountants and The AI Accountant. With over 15 years in practice management and technology consulting for accounting firms, Peter is passionate about helping accountants embrace AI to transform their businesses.

79 articles

The most valuable AI training for accountants might not count as CPD

The most valuable AI training for accountants might not count as CPD

In the last few months, agents running on Opus 4.8 and GPT-5.5 changed what AI can do — but the training most firms will buy to keep up is still a 2024 prompt-engineering course. The skills that actually build an AI-native team are learned through reps in your own work, and the most valuable may not even count as CPD. Here are the six questions to grade any AI training before you book it.

Peter McCarroll
Weekly AI Roundup for Accountants: Open rails, walled gardens, and a $1 billion shopping spree

Weekly AI Roundup for Accountants: Open rails, walled gardens, and a $1 billion shopping spree

Ramp shipped an "AI operating system" built for accounting firms, Karbon and Firm360 opened MCP sockets to whatever AI you bring, Thrive put $1 billion on the table to buy firms like yours — and 69% of tax pros told a surveyor the hourly billing model is ending. Not one major model release all week. The fight has moved up the stack, to who holds your firm's encoded knowledge and who controls the door.

Peter McCarroll
AI strategy for small accounting firms: you can't build Thrive's tax agent. You can build the loop it runs on.

AI strategy for small accounting firms: you can't build Thrive's tax agent. You can build the loop it runs on.

OpenAI and Thrive just shipped a self-improving tax agent at 97% draft accuracy — built by six months of OpenAI's forward-deployed engineers and researchers embedded across a 30-firm network. It isn't a service OpenAI sells; it's what happens inside a company OpenAI owns equity in. But the loop the agent runs on sits one layer down the stack, fits in your sprint, and is the only version that doesn't turn your firm into someone else's training data.

Peter McCarroll
Weekly AI Roundup for Accountants: AI is getting good, getting expensive, and demanding leadership

Weekly AI Roundup for Accountants: AI is getting good, getting expensive, and demanding leadership

OpenAI shipped a working tax agent at 97% draft accuracy — but it took a custom-built product to get there, not a ChatGPT login. Kick opened its ledger to whichever AI you bring, and made it work across all your clients at once. Microsoft canceled Claude Code over runaway costs, a CFO ate a half-billion-dollar surprise bill, and Opus 4.8 got noticeably more honest. AI implementation is hard, can get expensive, and produces powerful results when done well — the firms thinking 12 to 18 months ahead are the ones who'll come out on top.

Peter McCarroll
The AI operating system under the advisory firm you promised

The AI operating system under the advisory firm you promised

Six layers — firm identity, tech stack map, client registry, workflow templates, agent slots, monitoring. Four of them have real value with zero AI agents running. Most CAS firms don't have any of them in deliberate form, which is why their AI investments keep producing chatbots wearing the firm's logo instead of real changes to how the practice operates.

Peter McCarroll
Quality control in AI bookkeeping: what's the human for?

Quality control in AI bookkeeping: what's the human for?

Ian Crosby, the founder behind Bench, just launched an AI service that does a small business's books for $49 a month. The reflex is to argue AI isn't good enough yet — but that's the wrong question. As production automates and the data stops arriving pre-trusted, the durable human role moves to quality control: catching what the AI gets wrong, standing behind the numbers, and turning that into advice.

Peter McCarroll