CFOs in the First 90 Days of Transformation: How to Prioritize for Fast Wins

The CFO role has changed. Recent data shows that CFOs are now among the top candidates for CEO positions — a reflection of how deeply the finance function has become embedded in strategy, board governance, and operational execution. And nowhere is that expanded mandate more visible than during a transformation.

In a companion insight, Responsible Transformation: A Playbook for Fast, Low-Risk Change in 2026, we explored how CEOs can sequence change to accelerate without multiplying risk. While the CEO sets the vision. It’s the CFO who has to make the numbers work — and in the first 90 days of a transformation, the finance leader’s priorities are distinct, urgent, and often underestimated.

“Successful transformation requires the CEO to set the vision and sometimes the COO to drive execution, but the CFO is the one connecting both to financial reality,” says Matthew Gantner, Founder and CEO of Altum Strategy Group. “In those first 90 days, the CFO needs to ensure accurate reporting, proper governance controls, and operational flow — all while the business is still moving.”

What CFOs actually discover

The first lesson of transformation is that the starting position is almost never as clean as anyone assumed. In the first 90 days — particularly post-go-live — CFOs consistently uncover issues that were previously hidden or underestimated: legal entity structures that don’t reflect how the business actually operates, business process designs that were never formalized, and control environments that may have been adequate for the old system but don’t hold up under the new one.

For public companies, this is especially acute. IT general controls, compliance requirements, and audit readiness don’t pause for a transformation. The CFO has to manage the transition while keeping the control environment intact — and in many cases, simultaneously remediating issues that the transformation has exposed.

Gantner points to a publicly traded client that was transitioning from QuickBooks to a new ERP while facing more than 20 control deficiencies. “We worked with the CFO to take a risk-based approach — prioritizing the most material issues first and building a clear timeline to address everything over six, 12, 18, and 24 months,” he explains. “Ultimately, every audit finding was resolved. But the sequencing was everything. You can’t fix 20 things at once.”

Three fast wins that actually matter

When the pressure is on to show early progress, CFOs are tempted to chase visible operational improvements — a new dashboard, a process automation, a headcount optimization. Gantner argues that the most valuable fast wins in finance transformation are less glamorous but far more foundational.

The first is cleaning up the legal entity structure. Many companies carry legacy entities that no longer reflect how the business is organized, creating reporting complexity and compliance risk. Simplifying this structure is a fast win that pays dividends across every subsequent financial process.

The second is rebuilding or optimizing the chart of accounts. A well-designed chart of accounts isn’t just a bookkeeping exercise — it determines the quality and speed of every financial report the CFO delivers to the board. Getting this right early shapes everything that follows.

The third is reimagining reporting and financial analysis processes. This is where the CFO’s function starts to shift from backward-looking compliance to forward-looking strategic insight — and it’s the win that earns the most credibility with the CEO and the board.

“CFOs are pulled in a lot of directions in the early days of a transformation — there’s pressure from the business to show visible change fast,” Gantner notes. “But the CFOs who build the most credibility are the ones who anchor themselves in the fundamentals first: reporting and financial analysis. That’s the CFO’s home base, and it has to be solid before anything else can scale.”

The acquisition multiplier

The complexity increases significantly when transformation coincides with integration. Gantner describes a client that needed to fold five acquisitions into a single transformation — consolidating technology expenses, standardizing operations, and creating a unified financial architecture across previously independent entities. “The CFO’s role in that scenario is critical,” he says. “You’re not just transforming — you’re absorbing. And if you don’t sequence the integration properly, you end up with five different ways of doing the same thing, all running on one system.”

This is where Altum’s people, process, and technology methodology — the Altum Wave — becomes particularly relevant. The approach requires a holistic assessment before any system goes live: understand how teams actually work, map the processes that connect them, and then design the technology to support both. For a CFO managing an acquisition-heavy transformation, that sequencing prevents the most common failure mode — implementing a system that technically works but operationally doesn’t fit.

The AI question for CFOs

AI is now part of every transformation conversation, and CFOs occupy a unique position in that discussion. On the one hand, they can be genuine advocates — AI-driven analytics, forecasting, and data insights can accelerate the very kind of strategic reporting the finance function needs. On the other hand, CFOs need to serve as a balancing force when the rest of the business pushes for rapid adoption without considering cost or governance.

“A CFO should be thinking about AI as a long-term cost savings play, not as a way to cut headcount in the first quarter,” Gantner says. “And during the first 90 days, my advice is clear: don’t try to layer new AI processes on top of a system that’s still being implemented. Get the foundation right first. AI accelerates whatever it sits on top of — including dysfunction.”

This mirrors the argument Altum has made consistently across its AI governance work and Matt’s recent Forbes piece on building the connected enterprise before deploying AI. The operating model has to come first. For CFOs specifically, that means clean data, reliable reporting, and sound controls — then AI.

How to frame the investment

One of the most consequential conversations a CFO has in the first 90 days is with the board about transformation spending. Gantner’s advice is to resist the instinct to frame it purely as a cost line.

“Frame it as an investment in resilience and competitive advantage,” he says. “The board needs to understand that this spending creates the infrastructure for the company to operate more efficiently, respond to market changes faster, and reduce risk over time. That’s not a cost. That’s building the business.”

What “good” looks like at day 90

At the end of the first 90 days, the CFO doesn’t need a finished transformation. They need two things: rock-solid financial statements and demonstrable momentum.

The financial statements matter because they prove the system works — that the data is accurate, the controls are functioning, and the reporting cadence is reliable. Momentum matters because transformation is as much a cultural exercise as a technical one. If leadership has bought in, if the team can see the direction, and if the early wins are building confidence rather than fatigue, the CFO has done the hardest part of the job.

“The signal isn’t that everything is done,” Gantner says. “The signal is that you have buy-in from leadership and you’re gaining momentum in the right direction. Everything else builds from there.”

For more insights on responsible transformation and finance strategy, visit altumstrategy.com/insights