The Hidden Cost of Legacy FP&A Systems

Introduction

Legacy FP&A platforms often appear stable on the surface—but beneath that stability lies growing cost and complexity. Many finance teams are paying significantly more each year just to keep outdated systems running. 

The True Cost of Maintaining Legacy FP&A

Over time, fragmented system architectures drive up:

What once seemed cost-effective can quietly become a financial burden.

Complexity and Knowledge Gaps

As systems age, organisations often lose the in-house knowledge needed to manage them effectively. This increases reliance on external consultants and makes even simple changes time-consuming and costly.

Vendor Pressure and Upgrade Fatigue

Many FP&A vendors push customers toward new versions or replacement products with higher price tags and lengthy implementation timelines—often without delivering meaningful improvements in agility or efficiency.

A More Efficient Approach

Acterys provides a modern alternative, enabling finance teams to plan, forecast, and model scenarios in real time using Power BI and Excel, powered by Microsoft Fabric, with built-in write-back, workflows, and AI-ready analytics.

Replace complexity with real-time, AI-ready planning—inside the Microsoft tools your team already uses. Book a free 30-minute 1:1 Executive FP&A Modernisation Assessment to explore your options.

Book a free 30-minute 1:1 Executive FP&A Modernisation Assessment to explore your options.

Frequently asked questions

Legacy systems require more maintenance, specialist resources, and external support as they age and become more complex.

It slows down planning cycles, increases dependency on IT or consultants, and limits flexibility.

Not always. Many upgrades increase cost without addressing core issues such as agility and usability.

Yes. Unified, cloud-based platforms can significantly reduce maintenance and support overhead.