A rolling forecast is a dynamic financial planning tool that continuously updates, offering a more current and accurate view of future performance. While often used for revenue, it is exceptionally effective for managing the unpredictable costs of shared services and utilities. Expenses from IT, energy, and telecoms can fluctuate significantly, and this dynamic budgeting model provides a more realistic framework for accurate expense forecasting than a static annual budget.

For financial leaders, this approach unlocks superior financial agility and control over enterprise cost management. It facilitates proactive planning, turning expense oversight into a continuous, value-driven process. This empowers better decision making and the more strategic allocation of company resources, ensuring plans remain relevant in a shifting market.

The Static Budget vs. The Rolling Forecast

The Limitations of Static Budgets

Static budgets are prepared annually and remain fixed, regardless of changes in the business environment. This rigidity makes it difficult to respond to fluctuating utility costs or shifting demands on shared services. Consequently, these budgets often become obsolete within months, leading to inaccurate resource allocation and forcing reactive, rather than proactive, decisions.

The Agility of Rolling Forecasts

In contrast, a rolling forecast is a continuous planning process that adapts to actual performance and evolving market conditions. By regularly incorporating the latest data, it provides an up-to-date financial outlook, empowering management to make timely and informed decisions. This transforms the forecast from a static report into an agile tool for working through uncertainty and driving performance.

How a Rolling Forecast Works: A Step-by-Step Guide

Implementing a rolling forecast involves a clear, structured cycle that keeps financial plans current and relevant. The process can be broken down into four simple steps.

• Step one: Define a Time Horizon: The process begins by establishing a consistent forecasting period, such as 12, 18, or 24 months. Unlike a traditional budget where the view shortens as the year progresses, this time horizon remains constant. This ensures decision makers always have a consistent long term view of the business’s financial trajectory.
  
• Step two: Regular Updates: At regular intervals, typically monthly or quarterly, the forecast is updated with the latest actual financial results. This ensures the plan reflects the most current state of the business, rather than relying on assumptions made months earlier. It provides a realistic baseline for projecting future performance and resource needs.
  
• Step three: Drop and Add: This is the core mechanism of the process. As one period of actual results is recorded (e.g., March), it is dropped from the forecast. Simultaneously, a new future period (e.g., March of the next year) is added to the end of the horizon, maintaining the fixed time frame.
  
• Step four: Continuous Improvement: This process is more than a mathematical exercise; it is a cycle of continuous improvement. Each update involves refining future projections using a combination of historical data, current performance insights, and an understanding of key business drivers. This iterative approach improves budget forecasting accuracy over time.

Advantages of Adopting a Rolling Forecast

Shifting to a rolling forecast model offers more than just an updated spreadsheet; it delivers tangible strategic advantages that strengthen financial oversight and drive performance. For financial leaders, the benefits directly address the core challenges of managing costs in a dynamic environment. 

A 2023 survey from CFO Dive highlights this trend, revealing that 70% of organisations increased their budgets for financial performance management software, underscoring the move towards more agile forecasting tools.

Four core advantages include:

• Improved Accuracy and Reliability: Forecasts become significantly more reliable as they are based on the latest actual data, not on assumptions made up to a year ago. This is vital for financial planning, building confidence in management teams and supporting better decision making.
• Enhanced Agility and Responsiveness: The business gains the ability to respond swiftly to market changes and operational shifts. If energy tariffs suddenly increase or a new technology service is adopted, resources can be reallocated proactively, allowing the business to adapt plans with greater agility.
• Proactive Risk Management: This forward-looking approach allows for the early identification of potential budget variances and cost overruns. Instead of discovering a problem at year-end, finance leaders can see a potential overspend in shared IT services months in advance, allowing them to take corrective action before it escalates.
• Better Strategic Alignment: A continuous planning culture ensures that financial forecasts remain tightly aligned with the company’s strategic objectives. It bridges the gap between finance and operations, ensuring that the budget reflects the current reality of departmental needs and company-wide goals.

Examples of Rolling Forecasts in Action

To understand the real-world impact of a rolling forecast, consider these three business scenarios.

Managing Fluctuating Energy Costs

A facilities manager at a national retail chain uses a 12-month rolling forecast to predict electricity costs. After a hotter-than-expected summer increases air conditioning usage, the forecast for the coming months is adjusted upwards. This allows the company to proactively manage cash flow and investigate energy-saving initiatives before the next quarter begins.

Forecasting Shared IT Services

An IT department forecasts costs for cloud services based on employee numbers. When a new business unit is established, the forecast is immediately updated to include the additional software licences and data storage needs. This ensures the IT budget remains accurate and aligned with business growth, preventing a year-end budget shock.

Planning Telecommunication Expenses

A company’s finance team forecasts mobile and data expenses for its remote sales team. By analysing recent usage trends, they identify that data consumption has risen significantly. The rolling forecast is updated to reflect this, preventing a future budget shortfall and providing data to negotiate a more suitable mobile plan.

Best Practices for Implementing Rolling Forecasts

Successful adoption of a rolling forecast depends on a structured approach. Focus on the following few best practices:

1. Establish a realistic cadence by choosing a monthly or quarterly update frequency that aligns with the volatility of the costs you are managing and your team’s capacity.
   
2. Ensure seamless data integration by automating the flow of actuals from source systems, like ERPs, into your forecasting model. This eliminates manual entry, reduces errors, and saves valuable time.
   
3. Secure stakeholder buy-in through collaboration with the operational managers responsible for shared services and utilities. Their insights into cost drivers are essential for creating realistic and defensible forecasts.
   
4. Focus on key drivers, such as headcount for IT services or production volume for utilities. Building the forecast around the most significant variables keeps the process efficient and focused.

SmartStream Applications Support Your Rolling Forecasts

Implementing a rolling forecast for complex expenses requires technology that can manage fragmented data. Adapt IT EPM’s SmartStream Applications provide the data foundation for this dynamic process, enabling efficiency and accuracy. These solutions are crafted to enhance business administration and core operations.

Here is how they support your forecasting:

• Streamline Utility Management consolidates all utility, landlord, and municipal bills from multiple locations and regions into a single, centralised platform. This provides the clean and timely “actuals” required to fuel a reliable rolling forecast for your utility expenses.
  
• Streamline Shared Billing and Cost Allocation automates the complex calculation and apportionment of internal costs, such as shared IT services. This ensures your expense forecast is built on precise, automatically allocated data rather than manual estimates, enhancing financial accuracy.

A Smart Path for Expense Oversight

Adopting a rolling forecast for shared services and utilities is key to achieving financial agility in a changing market. This approach allows businesses to manage unpredictable costs and make more informed decisions. Explore how Adapt IT EPM’s SmartStream Applications provide the technological foundation to implement this process effectively.