Excel → Governed Planning

Excel remains part of the architecture

AFP’s discussion of its 2025 benchmarking survey reports that 85% of respondents used spreadsheets alongside EPM tools. That is evidence of coexistence in the reported sample, rather than a universal adoption rate or proof that every architecture works well. [source]

Three useful architecture states

Editorial diagnostic framework. These are cumulative indicators, not numerical thresholds or a software recommendation.

Hybrid is a legitimate choice

A governed model can coexist with spreadsheet exploration, one-off analysis or a familiar planning interface. The useful boundary is which calculations, data definitions and controls are authoritative.

Datarails describes preserving Excel models with centralized FP&A data and workflows; Jedox documents a shared model with an Excel interface and Add-in. These examples show different approaches to coexistence, without establishing a preferred product. [source] [source]

For any hybrid design, test import and write-back rules, scenario identity, calculation ownership, version control and how source changes reach downstream outputs.

Two more ways to retain Excel

Common validation questions: Where do the rules calculate? Where are approved values stored? Who can change a formula or scenario? How does a downstream report identify the released version?

A neutral robustness check

• Inventory the models, recurring transfers and financial outputs.
• Identify hidden assumptions, external links and duplicated logic.
• Establish who can change inputs, formulas and released versions.
• Measure the effort required to reconcile and rerun a scenario.
• Check traceability, handover and key-person dependence.
• Choose the smallest architecture change that addresses the observed constraints.