how to outsmart the big four on ai | accounting voices

agility, transparency, and judgment matter more than billion-dollar platforms.

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accounting voices
with rob brown

the big four are spending billions on artificial intelligence, cutting thousands of jobs, and reshaping how accounting work gets done. that scale can feel intimidating—especially if you’re running or working inside a small or mid-tier firm.

but here’s the counterintuitive truth explored in a recent episode of accounting voices:
the big four aren’t winning because of their budgets. they’re winning because of their discipline.

this episode breaks down what smaller firms and ambitious professionals can borrow from the ai strategies of pwc, kpmg, deloitte, and ey—without trying to copy their scale.

the lesson is clear: clarity beats capability, and governance beats gadgets.

the most important ai tool in the big four isn’t software—it’s policy.
every big four firm now publishes a clear internal ai policy. it spells out which tools are allowed, what’s off-limits, and where human review is required. that single step builds confidence with staff and clients alike.

smaller firms can do this immediately. a one-page document that says, “here’s how we use ai, and here’s where humans sign off,” goes further than any flashy pilot project.

in the ai era, clarity builds trust faster than code.

focus wins more than experimentation.
despite their resources, the big four concentrate on a small number of high-impact use cases—typically audit automation, tax research, and advisory insights. they aren’t automating everything. they’re automating friction.

that mindset translates perfectly to smaller firms. define three areas where ai saves time or improves accuracy, and ignore the rest. mastery beats motion.

ai becomes dangerous when people stop questioning it.
the largest ai spend inside the big four isn’t on tools. it’s on training people to challenge outputs, verify sources, and explain limitations.

ai isn’t risky because it gets things wrong. it’s risky because humans assume it’s right.

firms that teach judgment—not blind efficiency—build professionals who are harder to replace and easier to trust.

showing your work turns experimentation into leadership.
big four firms routinely share before-and-after examples of how ai changes processes. that transparency builds confidence internally and externally.

smaller firms can do the same through internal demos, team presentations, and thoughtful linkedin posts. when clients and colleagues see how decisions are made, trust follows.

visibility makes you promotable, and curiosity makes you future-proof.
you don’t need to run a firm to apply these lessons. the professionals who experiment responsibly, document what they learn, and share insights become visible leaders—regardless of title.

in an ai-shaped profession, silence is riskier than learning out loud. the big four may have scale, but smaller firms have agility—and agility wins when the rules are changing.

5 key takeaways

  1. smaller firms can apply big four discipline without big four budgets.
  2. publishing an ai policy builds trust faster than buying new tools.
  3. focus on three ai use cases and do them well.
  4. judgment is the most valuable skill in modern accounting.
  5. visibility turns ai adoption into professional credibility.

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