Customer Case Study
.jpg)
Stuart Brandman is one of three founders of 542 Partners, a Sydney-based accounting firm built on a clear operating principle: use technology to remove low-value work, so advisors can focus on what clients actually pay for.
Since founding the practice in 2013, Stuart has led the firm's technology roadmap. 542 Partners was an early Xero adopter, an early mover to fixed-fee billing, and now a committed early user of AI tools.
Today, 542 Partners is a 45-person team across Sydney and Chennai, India that serves clients across SME compliance, technology startups, and pharmacy.
Stuart and his team are taking their next step on the growth journey by onboarding Karbon as its accounting practice management platform. For a firm with clear ambitions for where it wants to go next, the platform needed to match that momentum.
542 Partners reviews every client's Xero file on a monthly or quarterly basis, depending on the engagement. That cadence is locked in, but over time the question became how much of the team's capacity that should actually require.
Before Aider, the firm ran its period close process entirely manually. Three dedicated processing staff worked through a 20-to-25-point checklist for every single client file. Every check was performed regardless of whether the underlying data was correct, and there was no mechanism for skipping ahead to what needed attention.
"We'd tried other providers attempting to do the period close, but we were never really satisfied with the results. Our manual checks driven by our processing team were the most thorough and efficient process we had—until Aider came along. — Stuart Brandman, Founder, 542 Partners
The knock-on effect of this manual process was felt in advisory reporting. Client-facing commentary had to be written up manually from whatever data the team had just finished verifying. With a four-to-six-week window to complete quarterly reviews across the entire client base, there wasn't much time left for the analysis that clients actually wanted to see.
When Stuart first saw Aider, it addressed both problems in one product. The period close and advisory workflows—previously two separate manual processes—could now run in sequence from a single platform. Verified data is fed directly into reporting, and the team no longer has to bridge the gap between the two.
"Previously we were doing every single check manually whether they were right or wrong. Now with Aider we know what's already right, and we can focus on what needs attention." — Stuart Brandman, Founder, 542 Partners
The numbers tell the most direct part of the story. But Stuart's explanation of how it happened and the impact on the team’s day-to-day is worth reading in his own words.
"We would typically have had three dedicated processing staff doing period close checks. That has now reduced to one, because they're typically only needing to look at the rectification steps required rather than ticking off a 20-to-25-point checklist for every single client." — Stuart Brandman, Founder, 542 Partners
That freed capacity has been redeployed up the value chain. Work that previously sat with senior staff can now be handled more broadly, because the verification layer beneath it has been automated.
The efficiency gains in period close don't stay internal. They ripple forward into what the firm can deliver to clients—and how quickly. Stuart sums it up simply:
"We're able to get through the review process quicker, and at the same time provide more information. That's the immediate value." — Stuart Brandman, Founder, 542 Partners
Within the same four-to-six-week window, the firm now gets through more and delivers more to clients on the other side of it.
The most visible change is in the advisory output. Stuart identifies Aider's advisory reporting section as the product's standout feature. Reports within Aider combine charts, tables, and AI-generated narrative commentary into a single document. Before Aider, 542 Partners delivered largely text-based analysis. The difference in how clients respond has been noticeable.
"We get a kick out of when our clients are happier with the outputs." — Stuart Brandman, Founder, 542 Partners
The AI reporting tools have also reduced the time spent writing commentary. Once the data is verified, the team can query specific metrics, shape the language, and produce a polished report in considerably less time than writing it manually.
542 Partners has been aware of Karbon since the early days of the practice. The timing never felt quite right. Until two things shifted at once: the firm restructured internally around a more team-based model, and Karbon acquired Aider.
Stuart had been watching the platform from a distance for years. When those two things converged, the decision became straightforward.
"Karbon is a platform where we can collaborate more consistently, and it better supports our longer-term growth ambitions. The investment that Karbon has made in recent years has come a long way. The roadmap sounds really exciting— the ability to do more things within the Karbon platform and rely less on integrated third-party apps is quite attractive." — Stuart Brandman, Founder, 542 Partners
For a firm that has built its identity around being genuinely partner-driven—responsive, proactive, always one phone call away—the appeal of a platform that supports that at scale is clear.
Karbon's collaborative workflow model means the whole team can operate from the same system, with the same visibility, without the firm having to rely on workarounds or manual handoffs to keep work moving.
542 Partners is currently onboarding Karbon, replacing FYI Docs as the firm's practice management platform. For Stuart, the Aider acquisition removed the last remaining hesitation. It wasn't just that Karbon was the right platform—it was that the two products together made more sense than either one alone.
For Stuart, the broader principle hasn't changed since 2013: reduce the friction between the team and the work, so the work can get closer to the client. Karbon and Aider together are the latest expression of that.
"With the acquisition of Aider, it kind of just became a really natural fit. The efficiencies we're gaining out of the period close checklist can flow into Karbon now, rather than having to work out how we get the outcomes of those checklists back into another platform." — Stuart Brandman, Founder, 542 Partners
The next chapter for 542 Partners is about growth using the capacity freed up by Aider and the collaboration infrastructure of Karbon to serve more clients, develop younger advisors, and deepen the advisory relationships the firm was built to deliver. The tools have changed. The goal hasn't.
