The role, explained
What is an
AI controller?
An AI controller does a controller’s daily work across a firm’s client book. It is software that watches each client’s bank and ledger every day, keeps the forecast current, checks the plan against cash, and carries what was decided into the next call. The firm keeps the judgement.
Start with the meaning
“AI controller” means different things.
Which one is this?
A person using AI inside one company
A controller in the role, using AI tools to support their work. The person is the controller; AI is part of their toolkit.
Software checking one financial system
A tool that checks journal entries or reconciles one company’s financial system. Its focus is a specific set of records.
Daily controller work across a client book
Software a CPA or fractional CFO firm runs across many clients, doing the daily controller work between calls, with the firm’s people making the calls.
This page is about the third.
A continuous view, between calls
How does an AI controller work?
An AI controller connects the records to what was agreed on each client call. It tracks decisions, checks them against daily bank activity, updates the forward view and learns from what actually happened.
What goes in
The daily loop
What the firm gets
Track
Every decision and target agreed on a call.
Verify
Each decision against the bank, every day.
Project
13-week cash and three-month trends.
Learn
How each client really pays.
Clear roles. Clear accountability.
Where does an AI controller sit in a firm?
Bookkeeping produces the records. The AI controller watches them every day and keeps the forward view current. The firm’s partner or CFO owns the judgement and the client relationship.
The work behind the brief
What does an AI controller do each day?
The daily work connects cash, plans and commitments. These six jobs give the firm a current view before it speaks with a client.
The relationship
Who buys an AI controller, and who uses it?
The firm buys it and runs it across its client book. Clients hear from the firm, under the firm’s name. Owners get it through their CPA or fractional CFO firm, not directly. A typical client is an owner-led business with $1M to $11M in revenue. With AgentLink, adding a client takes under five minutes. How a small CPA firm runs one.
The responsibility
Who signs off on what an AI controller produces?
The firm does. An AI controller supplies attention: what changed, what was expected, and whether it happened. It doesn’t make the decision. Decisions that are costly or hard to reverse go to a named person at the firm.
Daily attention from software.
Judgement from your people.
Software and people, working together
AI controller vs fractional controller: what’s the difference?
A fractional controller is a person working part-time across a few clients, and the number of hours caps how many clients they can carry. An AI controller does the daily watching across every client, so the person’s hours go to judgement and conversations. It works alongside the fractional controller and doesn’t take over the role.
The fractional controller
Brings experience, interprets the situation and works through decisions with the client. Their time is finite.
The AI controller
Keeps watching the bank, the books and the plan between conversations. Its output supports the person’s work.
What is an AI controller not?
Not bookkeeping software
It works with the records that bookkeeping produces.
Not just a forecasting tool
It also tracks decisions, verifies activity and follows through.
Not a decision maker
The firm makes the calls and owns the relationship.
Not sold directly to owners
Clients get the service through their firm.
A few common questions
What else should
you know?
What is an AI controller?
An AI controller does a controller’s daily work across a firm’s client book. It is software that watches each client’s bank and ledger every day, keeps the forecast current, checks the plan against cash, and carries what was decided into the next call. The firm keeps the judgement.
Is an AI controller the same as a fractional controller?
No. A fractional controller is a person who brings professional judgement to part-time client work. An AI controller is software that does the daily watching between calls. The two work alongside each other. Which does your firm need?
Do I still need a bookkeeper with an AI controller?
Yes. Bookkeeping produces the records the AI controller watches. The controller connects those records with bank activity, forecasts and what was decided on client calls.
Who is accountable for an AI controller’s output?
The firm remains accountable for the work it delivers to clients. The AI controller supplies the current view, while the firm reviews it and owns the judgement. Costly or hard-to-reverse decisions go to a named person.
How is an AI controller different from an AI CFO?
On this page, an AI controller means daily controller work across a firm’s client book. It does not claim the CFO’s authority to make strategic decisions or sign off on them. Those responsibilities stay with the firm’s people.
Can a business owner buy an AI controller directly?
In this model, the CPA or fractional CFO firm buys and runs the AI controller. Owners receive the service through their firm, under the firm’s name. AgentLink is built for that firm-led relationship.
Start with one client
It watches every day. Your team decides.
See how daily controller work fits into your firm.