Build Your AI CFO: Cash, Chasing and the Monthly Pack Without the Headcount

A business with twenty staff has a bookkeeper, an external accountant and a founder who opens the banking app more often than they would like to admit. What it does not have is a finance lead: someone whose job is to know, this week, how much room there is to move.

Hiring that person is out of reach at this size. Building most of that function is not.

Split the role before you automate it

When we scope a finance build we put every recurring finance task into one of three columns.

Column	Examples	Who does it after the build
Assemble	Weekly cash summary, aged debtors list, month-end pack, deadline calendar	The AI, on a schedule
Match and chase	Supplier bills against purchase orders, overdue reminders, missing-receipt requests	The AI prepares, a person approves
Decide and advise	Pricing, hiring, borrowing, tax position, anything signed	People: owner, bookkeeper, accountant

In most small businesses the first two columns are 50 to 80 percent of the hours. They are also the hours nobody is doing properly, which is why the founder ends up guessing.

What gets connected

• The ledger: Xero, MYOB or QuickBooks, read-only to begin with
• Bank feeds, through the ledger rather than directly
• The bills inbox, so supplier invoices are read as they arrive
• Wherever orders are raised: an inventory system, a job system, or a spreadsheet
• A calendar of BAS, super, payroll, insurance and licence dates

Our own group runs on Xero, and the pattern below is the one we have prototyped on our own books before offering it to anyone else.

A sensible first thirty days

Week one: read only. Connect the ledger and produce a Monday cash summary by hand-triggered run. Compare it with what the bookkeeper would have said.

Week two: debtors. Add the aged receivables list and reminder drafts. Nothing sends; someone reviews each draft and presses the button.

Week three: bills. Match incoming supplier invoices to orders. Clean matches queue for approval. Mismatches go back to the supplier as a drafted query stating the difference.

Week four: the pack. A month-end summary with the three movements worth discussing, each linked to the transactions behind it.

Only then consider scenarios and forecasting. The boring loops pay first and teach you how the data really behaves.

Five controls we will not build without

1. Money moves only on a named person’s approval. Payment files are prepared, never released.
2. External messages are drafts. No supplier or customer hears from the system unprompted.
3. Provenance on every figure. Each number links to its source rows and the version of the logic that produced it.
4. One authoritative report per headline metric, with an owner. Anything else is marked exploratory.
5. The accountant keeps the advice. They receive reconciled books and a short list of genuine questions.

What each person gets back

The owner stops being the finance department after hours. The bookkeeper spends their time on exceptions instead of keying. The accountant has clean inputs and a client who asks better questions. Nobody’s role disappears; each one moves up a level.

If your finance lead is currently “whoever has time”, look at AI automation for small business or tell us which ledger you use and where the week goes.