Reversible vs Irreversible - Where AI Belongs (and where the bank wreck starts).
With Jez Rowe and Cam Lynch
Cam turned on JAX, Xero's AI agent, for auto bank reconciliation and spent a weekend unpicking misposted payments and misdated transfers. Jez and Cam use it to draw a hard line: AI is great where you can cherry-pick its output, and dangerous inside a system of record like your ledger. Their advice for accountants: test the tools yourself, set clients clear rules, and sell governance and traceability, not speed.
What this episode answers
Should I turn on AI auto bank reconciliation in Xero?
Not yet, and not without your accountant or bookkeeper checking it. Cam Lynch, founder of Vibe CFO, turned on JAX, Xero's AI agent, for auto reconciliation and in September 2026 spent hours unpicking it. It posted payments without matching them to invoices, including foreign currency invoices and one just a cent out, leaving invoices showing unpaid. It also mixed up dates on simple credit card transfers. Clearing the queue fast is not the same as reconciling correctly.
Why does AI get bank reconciliation wrong?
AI gets bank reconciliation wrong because it inherits the button, not the judgement. Bank rec was designed around a person matching transactions to invoices and using judgement as they go: a payment a cent out, a foreign currency invoice, a transfer between your own accounts. Drop an AI agent into the middle and it optimises for clearing the queue. A green tick no longer means checked and verified. And every wrong match takes hours to find and unreconcile.
Is it safe to let AI change data in Xero or other systems of record?
Not without close checking. A system of record is where AI gets dangerous. A system of record is the store your business treats as the truth, like Xero for your ledger or HubSpot for your marketing data, and it can't be broken. Using AI for research or a marketing campaign is low risk, because you cherry-pick the good parts. Forcing AI through your ledger is different. Every mistake has to be found and backtracked, which costs hours, and money if you don't know how to fix it.
How should accountants handle clients using AI in their bookkeeping?
Get on top of the tools yourself, then give clients a few firm rules. Clients are already putting their books through AI, and many hand accountants a mess that takes longer to clean up than if they'd done nothing. Tell clients two or three things they must never touch, and that accepting an AI suggestion is not the same as approving it. Test the tools so you can say with authority: don't use this yet, here's why, I've tested it.
Will clients expect lower fees if my accounting firm uses AI?
Not if you're clear about where your value sits. Using AI to build work like reports doesn't have to turn into a pricing argument. When a client says "but you're using AI", the answer is that your value is the expertise around it: safety, governance, traceability and keeping the ledger a reliable source of truth. The bank rec mess clients create by pressing the AI button themselves is exactly why that expertise matters.
Related: How we handle security →
Episode notes
Cam turned on auto reconciliation in Xero back in July, then opened the file last weekend. Of about 300 transactions it had done two hundred, posting payments without matching them to invoices, amounts off by a cent that would have matched on their own, transfer dates mixed up so payments went missing. Hours of it, screens everywhere, working out what the thing had done versus what was actually in the ledger.
Bank rec was built around a person matching things up and using judgement as they go. Drop AI into the middle of that and it does not inherit the judgement. It inherits the button. So it gets very good at clearing the queue, which is not the job.
The line worth holding onto is reversible versus irreversible. Research, a marketing campaign, a first draft, all of that is cheap to get wrong and you just go again. A system of record is the opposite. Errors compound, they cost hours to unpick, and a green tick stops meaning anyone checked.
And it is not only accounting. The client turns up to the lawyer with the contract already written and says it is all covered.
Jez and Cam on the bank wreck doing the rounds, why a client's mess now takes longer to fix than if they had done nothing, and what an accountant is actually selling once the output is the easy part.
Five minutes. One thing that matters. We ignore the rest, so you can too.
Vibe CFO is Australian founded. An AI CFO for small and medium business, out of the box, governed and secure.
Vibe in 5.
Transcript
Read the full transcript
Ah, yet another big week in AI. This is The AI Exhale, hosted by Vibe CFO with Jez and Cam. Five minutes, one thing that matters, or maybe two. We ignore the rest so you can too.
Jez: All right, we're going to dive into a bit of a first-hand account Cam experienced over the last weekend. Before I hand to Cam, this, generally speaking, is talking about that system of record and source of truth, in the code base or in the ledger if we're talking about accounting. Cam, share with us, what was the bloody pain point of your last weekend? What did you spend hours doing?
Cam: Well, I had turned on JAX. So JAX sits across all of Xero, and JAX has got different roles, but in this role its job is bank reconciliations, right? And you can auto reconcile. Say there's like 300 transactions for the month, it might decide to auto reconcile maybe 100 or 200 of those 300. So I turned this on back in July, and I picked up the bank rec file and, my goodness. It had decided to post payments. It didn't put them against the invoices, because sometimes these overseas invoices are in foreign currency, or sometimes these amounts were exact.
Like, this was a matching invoice, just a cent out that it didn't match, and if I'd just turned auto rec off, it would have actually come up and matched it, right? But it didn't match it. It just literally decided to post it as a payment. So then we've got an unpaid invoice sitting there and the payment's gone through. The other example was literally bank transfers. I mean, this is so simple, paying your credit card, and it got the dates mixed up.
Now, anyone who uses the transfer feature in these bank rec tools knows it's a pain in the ass if you don't get it aligned. Payments go missing, you've got to go back. And for somebody who's not an accountant or a bookkeeper, it's a nuisance. So it just totally lost control of the system.
Jez: Yeah. And bank rec was built around, essentially, a person matching things up and using judgement as they go. Now we're dropping AI into the middle of that. It doesn't inherit the judgement, it just inherits the button. Very good at clearing the queue, but that's not the job. It's got to match correctly.
Cam: My takeaway, and the reason I bring this up, is because this wasn't a wonderful experience using AI to solve my problems. This was a nightmare, because it cost me hours and hours to go back and unreconcile and work out. I didn't want to unreconcile everything. And then I was, oh, my God. I had screens everywhere, trying to cross-check what it had done versus what was in. This is just shocking, really.
There's an expression I see going around, bank wreck, with a W-R. What do you think is happening to accountants where they've got their small business clients turning this thing on? They must be pulling their hair out.
Jez: I mean, this and many other cases. We could go on for days here, and I'm sure the audience would resonate. There's obviously a lot of client behaviour. Look what I've done. Look what I've claimed. They've thrown it into AI and they've just got a mess to clean up that is more burdensome, more time consuming than if the client had done nothing. So, yeah, a green tick really no longer means good, done, checked and verified. It actually could just be this speed game with AI to clear the success metrics to get the job done. But, yeah, it's all a mess underneath.
Not fun for the accountant nowadays. Another disturbing disruption.
Cam: Don't you think, if we widen this conversation now, because what it triggered for me was the wider white collar world, right, where this is happening everywhere. In comes the business to the lawyer and says, it's all good, I've written it for you. And you think, this is just across the board, where people who have no understanding of your niche are like, I've got it covered.
Jez: It reminds me, if I'd had this stuff when I was at school. I remember asking my Christian studies teacher, but what if I don't believe in God? How do I analyse all of this scripture? He politely sat me down to carry on with the curriculum.
Cam: My worry, right, is that we're already under the pump, the workers, and then this is different. I mean, it's different for me to go off, right, and we prepare a marketing campaign and we cherry-pick its research and we go, that's fantastic, I didn't think about doing it that way, I could just do this and away you go. And you're like, wow, tick, tick, tick, how useful. This other example is the complete opposite. This is system of record. System of record for anyone is like Xero, or HubSpot for your marketing data. It's this store that you have that can't be mucked around with.
It can't be broken. And all of a sudden, we're trying to force AI through it. And it's dangerous, right? Because it can cost you hours and hours of time backtracking to fix problems, and cost you money if you don't know how to fix it.
Jez: And I guess within that client relationship, maybe set a couple of rules. Tell them two or three things to never touch, and tell them that accepting a suggestion is not the same as approving it. So again, it's worth using it to research, but in the technical world that the accountant operates in, it's a much different ballgame.
Cam: It's worth, as a professional, picking up the AI now and saying, it is everywhere. My clients are using it. It's happening. It's exploding. I must be on top of this, because otherwise you get poor behaviour. You've got to be an expert in your profession and know how these tools interact with all of this, so that you can control the situation, saying, do not use bank rec right now. Here's why it doesn't work. I've tested it.
I actually know how AI works. And you pushing that button causes problems that could cost you more money.
Jez: And I think therein you can weave in that using AI to build some of your work, like your reports, doesn't become so much of a pricing challenge with the client. If they say, oh, you're using AI, it's more that AI and your expertise within it is to do with the safety, the governance, the traceability and the source of truth.
And that's your five-ish minutes back. Vibe CFO, Australian founded. An AI CFO for small and medium businesses, out of the box, governed and secure. vibecfo.ai. Now you know.
Now you know.
The AI Exhale is made by VibeCFO. Australian founded, an AI CFO for small and medium business, out of the box.
