In finance, models are more than spreadsheets. They are frameworks for thinking, structuring reality and making decisions. Classic investment models; simple, elegant, structured in three or four sheets, have shaped generations of financial professionals. They remain fundamental for valuations, board decisions, and long-term planning. But as businesses grow more complex, and as the Finance Function evolves into a strategic partner rather than a reporting centre, traditional investment models reveal their limitations. They were not created to run the business day-to-day. They were designed to evaluate - not to operate.
Today, operational financial management requires something different: a dynamic, multi-dimensional, driver-based structure capable of connecting strategy, operations, accounting, cash and performance.
This is where the Operational Financial Model (OFM) emerges as the backbone of a modern Finance Function.
The Legacy of the Classic Investment Model
The classic investment model, broadly taught across finance qualifications, business schools and professional training programs, follows a familiar and disciplined logic. It is structured around clear assumptions, transparent calculations, revenue and cost projections, simplified financial statements and valuation outputs such as NPV, IRR and payback periods
Classic financial models are synonymous with efficiency and clarity. Typically, they are built around a streamlined structure with three to four sheets:
- Introduction: Presents assumptions and objectives.
- Assumptions: Captures key inputs driving calculations.
- Calculations (The Engine): Core computations for investment metrics.
- Outcome Statements: Output results like NPV, IRR, and other indicators.
This approach is compact, elegant and highly effective for its intended purpose: assessing the feasibility of an investment or transaction. Its strengths are undeniable: clarity, methodological discipline, modelling hygiene and a strong focus on key value drivers.
But its structure is intentionally high-level. It does not capture the layers of operational detail needed for day-to-day financial management. It does not reflect department-level responsibilities, granular cost behaviours, monthly performance tracking, multi-scenario planning, treasury and cash visibility, or the real-time reporting needs of a growing business.
It was never designed for that, and it should not be forced into a role it cannot fulfil.
Why Modern Operational Management Requires a More Evolved Framework
Operational decision-making lives in a far more complex environment than the classic investment model was built for. Businesses today face rapidly changing conditions, evolving priorities, shifting cost structures, and layered strategic initiatives. To support this reality, a financial model must meet requirements that go far beyond static assumptions or simple percentage-based sensitivities.
Operational finance requires:
• granularity, with visibility across products, departments, cost-centers and operational units
• multi-scenario capability, not only “best/base/worst”, but parallel scenarios that interact with each other
• time-aware modelling, where the exact timing of costs, hires, project milestones, inflows, and delays shapes outcomes
• dependency logic, because one decision often cascades into several financial consequences
• flexibility, so the model adjusts when plans shift, without breaking formulas or requiring a rebuild
• repeatability, ensuring the same structure can accommodate new projects or initiatives without reinvention
• live integration with actuals, for monthly and year-to-date performance tracking
• cash and treasury awareness, because the operational calendar always affects liquidity
• tax and regulatory coherence, especially in multi-entity or cross-border environments
In real life, scenarios are rarely isolated. They interact. A company may need to evaluate what happens if:
cost reduction targets for this year fall short
but double the expected benefits materialise next year
and a new project management department is hired in November of current year
to develop an initiative that will generate cash benefits only in two years period
while another project is postponed, requiring all financial timings to shift
and liquidity must remain stable across all scenario combinations
This is the real world of operational finance - multi-dimensional, dynamic and interconnected.
A modern model must be able to switch scenarios on and off, layer them together, test their combined outcomes, and reschedule all financial implications automatically.
Classic models simply do not offer this level of agility. Their rigid architecture cannot absorb shifting operational realities without manual rework, additional sheets, or structural compromises.
Operational financial management, therefore, requires a different class of model: one designed for flexibility, transparency and continuous decision support.
The Operational Financial Model: A Modern Architecture for Finance
An Operational Financial Model is not simply a “larger” or more detailed version of a classic investment model. It represents an entirely different way of structuring financial intelligence. Where classic models provide a snapshot for a decision, an OFM is designed to support the strategy, operations and financial governance of a business on an ongoing basis.
A mature OFM rests on several architectural principles that distinguish it from traditional models and make it suitable for modern, fast-moving organisations.
1. Transparent Inputs and Scenario Logic
At the heart of an OFM is a clear, structured input layer. It goes far beyond adjusting a growth rate or tweaking a cost assumption.
A well-designed OFM includes:
• configurable scenario switches
• operational drivers and activity metrics
• cost structures and business rules
• timing assumptions and project schedules
• simulated sensitivities and multi-factor scenarios
This structure allows leadership to explore complex questions without breaking the base model.
Real operational questions rarely follow simple patterns like “revenue +5%” or “cost –2%”.
They involve timing, dependencies, trade-offs and long-term impact:
• What if we don’t achieve this year’s cost reduction target, but double it next year?
• What if we hire a new project team in November and the benefits start only in two years?
• What if two scenarios run in parallel for six months?
• What if we delay a major investment: how do we cascade all financial implications smoothly?
An OFM is designed to handle these questions effortlessly, without rebuilding the model or creating duplicate files.
It offers agility without compromising structure, which is essential in businesses that evolve rapidly.
2. A Modular, Multi-Layered Engine
Instead of a single “calculation sheet”, the OFM operates through a modular engine: independent components that work together as one system. These often include:
• revenue engines reflecting volume, price, mix and channels
• cost engines with variable, fixed and semi-variable behaviour
• headcount and payroll structures tied to departments and roles
• capex, depreciation and amortisation logic
• working capital mechanisms that react to operational drivers
• tax and interest modules
• cash and liquidity projections
Each module can be updated or extended without disrupting the rest of the architecture.
This modularity creates flexibility, stability and long-term scalability, which traditional models simply cannot offer.
3. Alignment With Accounting Reality
A model is only as reliable as its connection to actual financial data.
The OFM therefore mirrors the structure of the accounting and reporting systems:
• chart of accounts mapping
• cost centre and responsibility structures
• product, geography or business unit segmentation
This alignment allows actuals to flow into the model seamlessly and ensures that the outputs reflect true operational performance.
It also makes the OFM the single place where accounting and FP&A converge.
4. Outputs Designed for Decision-Making
The power of an OFM lies in its ability to transform raw financial logic into actionable insight.
A complete OFM produces:
• operational P&L, monthly and YTD
• balance sheet and cash flow statements
• liquidity forecasts (weekly, monthly, quarterly)
• portfolio or segment performance views
• management dashboards
• long-term financial plans (3–5 years)
And depending on the business model, many other modules may be required.
What matters is not the number of sheets or calculations, but the architecture behind them.
An effective OFM replaces fragmented spreadsheets with a unified, coherent financial system that supports both day-to-day management and long-term strategic planning. Crucially, it is designed so that new outputs or analytical views can be added without altering the core structure. Once the foundation is built correctly, expanding the model simply means attaching an additional view, not rebuilding logic, not rewriting formulas, not redesigning the flow.
This is why the initial design phase is so important. A well-architected OFM anticipates complexity, growth and future questions. It allows Finance to scale the model as the business evolves, while keeping the integrity of the system intact.
5. Collaborative Ownership
Traditional investment models are often the domain of a single analyst, built and maintained in isolation.
An Operational Financial Model is fundamentally different: it is designed to be cross-functional, collaborative, and continuously updated.
In a mature OFM environment:
• Accounting brings actuals and ensures data quality
• FP&A maintains assumptions, scenarios, and planning logic
• Treasury manages liquidity inputs and cash drivers
• Tax incorporates timing, deductibility and incentive implications
• Operations contribute activity drivers and business insight
Clear governance, version control and process discipline ensure that the model remains accurate, stable and shared across the organisation.
But the real transformation goes deeper.
In many companies, Finance functions operate in silos, each with its responsibilities, constraints and systems. Communication can be limited, and decisions are often made within narrow functional boundaries. From a corporate perspective, this fragmentation creates inefficiencies and blind spots: information moves slowly, insight becomes diluted, and opportunities for improvement remain invisible.
A well-designed OFM resolves these issues by bringing all Finance disciplines into one coherent architecture. It forces clarity, encourages dialogue, and naturally aligns teams around shared financial logic and shared objectives. When everyone works from the same structure ;the same drivers, assumptions, definitions and outputs, the organisation becomes more coordinated, more transparent and more effective.
I have seen this in my own practice.
In one organisation, the OFM I developed, managed by FP&A but jointly used by Tax, Treasury, Financial Accounting and Cost Control, became the central reference point for decisions. Teams that previously worked independently began to collaborate more mindfully, understanding how their actions affected liquidity, profitability, tax positioning and long-term planning. The model improved not only reporting and forecasting, but the behaviour and cohesion of the Finance function itself.
In mature organisations, the OFM becomes the backbone of financial management: a living system that grows with the business, integrates all functions, and ensures that decisions are always made with a complete, consistent view of the financial reality.
Conclusion: The Future of Financial Management Is Integrated, Dynamic and Intelligent
As organisations scale, transform, or operate in uncertain environments, the limitations of traditional financial models become clear. A modern finance function needs more than static forecasts and isolated reporting. It needs an Operating Financial Model - a system that connects strategy, operations and financial governance in one living, modular architecture.
An OFM does not replace human judgment; it enhances it.
It does not simplify complexity; it organises it.
It does not constrain decision-making; it empowers it with clarity.
When designed correctly, the OFM becomes the financial backbone of the organisation:
• transparent enough for leadership
• structured enough for Accounting
• dynamic enough for FP&A
• precise enough for Treasury
• and insightful enough for Operations.
It is the single source of truth that holds everything together.
This shift is not theoretical. It is happening now - in scale-ups building disciplined processes, in multinational subsidiaries seeking alignment, and in post-acquisition integrations where financial clarity must be rebuilt from the ground up. An OFM enables organisations to move beyond reactive reporting and into strategic, data-driven leadership.
At FinDep Consult, we believe this evolution is not optional - it is essential for modern finance. And we are committed to helping companies build the systems, processes and capabilities that will sustain performance in the long term.
How FinDep Consult Supports Your Financial Evolution
FinDep Consult specialises in designing and implementing Operational Financial Models that elevate the entire finance function. Our approach blends:
• deep corporate experience — leading Finance, FP&A, Treasury and Controlling in multinational organisations
• strong international qualifications — ACCA
• local regulatory expertise in Italy — ODCEC
• hands-on execution — not only advising, but building the systems, processes and models that Finance teams work with every day
We are technically savvy, with an engineer’s mindset: structured in our thinking, rigorous in our logic, and precise in our implementation. This makes our models robust, transparent and scalable, designed for real business, not theoretical exercises.
We partner with companies during pivotal moments: rapid growth, restructuring, expansion, or post-acquisition, helping them restore financial clarity, strengthen governance, and equip leadership with the tools needed to navigate the future.
Our work is grounded in a simple belief:
Finance should create clarity, not complexity.
It should guide decisions, not follow them.
It should connect the organisation, not work in silos.
The Operational Financial Model is the practical foundation for this vision, and we help companies bring it to life.
If you want to explore how an OFM could transform your organisation’s financial management, we invite you to connect with us.
About the Author
Anastasia Aleksenko, ACCA, ODCEC
Managing Partner, FinDep Consult
With over 25 years of experience across multinational corporations, private equity environments, and high-growth businesses, Anastasia specialises in building modern finance functions, integrating post-acquisition operations, and designing advanced FP&A and Operational Financial Modelling systems.
Her career spans roles as Finance Director, Controller, FP&A Lead and Interim CFO across Europe, where she has led financial transformations, built performance management systems, restored governance in complex environments, and supported companies through M&A, restructuring and international expansion.
Anastasia founded FinDep Consult to bring a new standard of financial clarity, strategic insight and operational excellence to companies operating in Italy and internationally.
