Let’s be honest, most AI content aimed at accountants either sounds like science fiction or sales fluff.
But when Alastair Wilson, tax partner and long-time AI tinkerer, sat down for a recent webinar, he gave the kind of advice that small and mid-sized firms could actually use. No overhyped tools. No wild predictions. Just real-world examples of how AI is quietly transforming personal tax work—one workflow at a time.
So what’s he doing differently? And what can other firms learn from it?
Why now? The window for AI in tax has cracked wide open
According to Alastair, the last 12 months have changed the AI conversation in accounting. For starters, tools like ChatGPT 4 and Microsoft Copilot have become far more capable, and crucially, more accurate.
“What I was spending an entire day doing, now takes me half an hour to get 80% of the way there,” he said. “The research models are finally trustworthy. You just need to do the final 20% and sense-check the sources.”
That speed boost means firms of every size can now start using AI to save time. And unlike cloud software rollouts, there’s no need to drag IT through a six-month implementation plan. As Alastair puts it: “If you’re in a small firm, you can test ChatGPT on Monday, Copilot on Tuesday, and Perplexity on Wednesday. You don’t need a committee.”
AI isn’t magic, but it is powerful when paired with RPA
Alastair’s been hands-on with automation since before COVID, starting with robotic process automation (RPA). These days, he sees AI and RPA as two sides of the same coin:
“AI is great for research. But when you connect it with automation tools like Power Automate or Zapier, that’s when you get real efficiency—like pulling addresses from Companies House, or generating year-end reminders automatically.”
His approach? Use AI to do the heavy thinking, then let automation handle the grunt work.
3 practical use cases Alastair’s built (that you could too)
Here’s where things got meaty. Alastair walked through a handful of actual AI-driven tools he’s set up, and how they’ve saved him serious time:
1. AI-generated client newsletters
Instead of scouring HMRC updates every month, Alastair has a ChatGPT task that sends him 10 relevant tax topics on the 1st of every month automatically.
“It’s like having a tax-aware assistant who brings you the headlines without asking,” he said. “If you like all 10, copy and paste. If not, pick the best.”
No marketing team required.
2. ERS return automation with GPT
Every year, the employment-related securities (ERS) return used to chew up hours. Now, Alastair feeds ChatGPT the key share information, and it suggests the right HMRC template, pre-fills the form, and provides a downloadable summary.
“Of course I check it—but it’s 90% done. That’s hours saved straight away.”
3. Building assessment tools in minutes with Lovable or Replit
If you haven’t heard of Lovable, it’s an AI tool that can generate an entire tax app from a plain-English prompt. Alastair used it to create a statutory residence test tool in minutes.
“I typed in what I wanted, and five minutes later, I had a clickable prototype. You wouldn’t use it live with clients, but it gives you a working starting point to build from.”
And that’s not the only use. He’s also built basic platforms for tracking employment-related securities and even mocked up transfer pricing calculators—all with little-to-no traditional dev time.
Copilot vs ChatGPT: Which one does he actually use?
When asked about Microsoft Copilot, Alastair had a clear answer: “The free version is limited. But if you pay for the enterprise version around £20 a month, it’s brilliant.”
He’s especially excited about building “agents” using Copilot Studio. These agents can handle multi-step queries and even pass data between each other.
But if you’re asking technical tax questions?
“I still go to ChatGPT for that. It's better at technical depth. Just don’t feed it names or client data unless you’re using the enterprise version.”
Planning, not panic: What this all means for firms
Here’s the reality check. If your firm waits 12 months to explore AI, you’re not just delaying, you’re falling behind.
“If someone else can provide an answer in 24 hours, and you’re still taking two weeks… clients will notice. And they will move.”
AI isn’t replacing accountants. But it is replacing slow ones.
Whether it’s auto-drafting engagement letters based on meeting transcripts, or building smart prompts that juniors can use to deliver consistent outputs, Alastair’s core point was simple:
“It’s about taking the boring bits off your plate so you can focus on the interesting stuff.”
So where do you start?
Alastair’s advice: pick a low-risk workflow and try something this week.
- Test a newsletter prompt
- Automate one tax reminder
- Try an ERS return with ChatGPT
- Build a basic scenario calculator in Lovable or Replit
You don’t need to be technical. You just need to be curious.
“Start small. Save time. Then show the team what’s possible.”
Could AI save you 3 hours this week without changing your entire process?
What’s the first workflow you’d test it on? Let us know—we’d love to see what you build.