PromptTANK

AI adoption for CPA firms

Your whole staff, writing like your best partner.

(Right now, it’s all in her head, and she goes home at six.)

Meanwhile, your team is already using AI the way a sixteen-year-old uses the family car: eagerly, without asking, and nobody’s sure where it’s been.

(Some have pasted client files into their personal ChatGPT. You could ask which ones. You probably should.)

Admin skillYour firm’s workspace ·
Built fromAdmin lead interviewEmail templatesVoice guideReview rules
@Admin
One catch first. Your business-return template asks autopay clients to pay the invoice too. They’d pay twice, so I cut that line.Hi Dana, Harbor Street Bakery’s 2025 return is ready to sign. Our $1,240 invoice autopays on October 15, so there’s nothing to pay today.Pay your invoice online with the link below.One payment instructionNo SSN, EIN or bank numbersIn the firm’s voiceDRAFT · A PERSON REVIEWS BEFORE IT’S SENT

That catch is your firm’s rule, running at every desk.

Now it isn’t only in her head.

(Ten of her best emails. The lines they share become the rules every draft follows.)

VOICE DNA WHAT WE FOUND WHAT IT MEANS WHAT WE RECOMMEND WHAT WE NEED
43 seats

at a CPA firm, on seats it already pays for, drafting in its voice under its review rules.

Four departments. One standard.

Office hours for the whole firm, every week, until it’s how everyone works. And for the people who lead it, one-on-one coaching, made to measure.

Career journalists. We interview your people before we touch the software.

C. Brian Smith
C. Brian SmithVanity Fair, Slate, Ogilvy, Dollar Shave ClubEvaluated Google’s Gemini for 18 months before release. Coaches 25+ business owners through AI adoption, rated 9.7 out of 10.
Dan McCarthy
Dan McCarthyEsquire, Fast Company, The Boston Globe, VICELaunched UrbanDaddy Boston; editor-in-chief of DigBoston. Now a VP of Marketing running operational diagnosis through AI analysis with this method.
Smith and McCarthy, how to check AI output against written rules. AI and Ethics, 2026 
First page of Deterministic governance for generative systems, AI and Ethics, 2026 How to check AI output against written rules.Smith & McCarthy · peer-reviewed · AI and Ethics, Springer Nature, 2026
brian@theprompttank.com

AI adoption for CPA firms

Your best partner, at every desk.

(She still goes home at six. Her judgment stays.)

Free consultation · brian@theprompttank.com

Peer-reviewed Springer Nature · AI and Ethics, 2026 Patent pending USPTO, 2026
The whole story

The idea

Your whole staff, writing like your best partner.

(Right now, it’s all in her head, and she goes home at six.)

Meanwhile, your team is already using AI the way a sixteen-year-old uses the family car: eagerly, without asking, and nobody’s sure where it’s been.

(Some have pasted client files into their personal ChatGPT. You could ask which ones. You probably should.)

The catch

Admin skillYour firm’s workspace · ChatGPT or Claude
Built fromAdmin lead interviewEmail templatesVoice guideReview rules
@AdminDraft the return-ready email for Harbor Street Bakery. They’re on autopay.
One catch first. Your business-return template asks autopay clients to pay the invoice too. They’d pay twice, so I cut that line.Hi Dana, Harbor Street Bakery’s 2025 return is ready to sign. Our $1,240 invoice autopays on October 15, so there’s nothing to pay today.Pay your invoice online with the link below.One payment instructionNo SSN, EIN or bank numbersIn the firm’s voiceDRAFT · A PERSON REVIEWS BEFORE IT’S SENT
Rule: one payment instruction per email

That catch is your firm’s rule, running at every desk.

Flip the switch. The rule decides what stays.

Voice DNA

Now it isn’t only in her head.

We take ten to fifteen of your best client emails and write down what they share: the shape, the careful words, the sentences your firm never sends. Every draft at every desk starts there, and is checked against it.

Built from ten of her emails.

First draft · the AI’s default voiceSame draft · your firm’s voice Example

Subject: the topic, not the alarm

SubjectURGENT: Issue With Your Q3 Tax Payment!Third-Quarter Estimated Payment

Hi Dana,

What we foundOpen on the findingNoted, never discoveredThe condition, not the person

I hope this email finds you well! I wanted to reach out because, while reviewing your account, we discovered a problem with your third-quarter estimated tax payment. It looks like you applied it to the wrong tax year.

We noted that the third-quarter estimated payment appears to have been applied to the 2025 tax year rather than 2026.

What it meansHedge what we don’t control

Don’t worry, this will definitely be fixed and you won’t owe any penalties.

If it stays applied to 2025, the IRS may treat the 2026 estimates as underpaid and send a notice. Based on what we can see, we would expect this to be correctable.

What we recommendRecommend plainly

We recommend asking the IRS to move the payment to 2026, and we can prepare that request for you.

What we needPlease, then what happens nextNo deadline we made upThank you. Then stop.

You need to send us your payment confirmation by Friday.

We look forward to continuing to serve you! Let me know if you have any questions!

Please send the payment confirmation, with the date and amount, so we can match it to the IRS record. We are happy to walk through it by phone if that would be easier.

Best regards,Thank you.

The standard

43 seats

at a CPA firm, on seats it already pays for, drafting in its voice under its review rules.

Four departments.

One standard.

Office hours for the whole firm, every week, until it’s how everyone works. And for the people who lead it, one-on-one coaching, made to measure.

Who builds it

Career journalists. We interview your people before we touch the software.

C. Brian Smith
C. Brian SmithVanity Fair, Slate, Ogilvy, Dollar Shave ClubEvaluated Google’s Gemini for 18 months before release. Coaches 25+ business owners through AI adoption, rated 9.7 out of 10.
Dan McCarthy
Dan McCarthyEsquire, Fast Company, The Boston Globe, VICELaunched UrbanDaddy Boston; editor-in-chief of DigBoston. Now a VP of Marketing running operational diagnosis through AI analysis with this method.

The research

The first page of the paper in AI and Ethics

Peer-reviewed.

How to check AI output against written rules. Smith & McCarthy, AI and Ethics 6:394, Springer Nature, 2026.

Read the paper ↗The governance runtime behind it is patent pending, USPTO, 2026

Start here

Talk to the person who builds it.

A free consultation: twenty minutes on how your firm uses AI and what to build first.

brian@theprompttank.com

C. Brian Smith