How reliable is each savings measure today?

The Härtegradmodell is a classification framework that originated in German procurement controlling (Einkaufscontrolling). It categorizes planned measures by their degree of savings realization — from "soft" (estimated, uncertain) to "hard" (verified, substantiated for financial planning).

The term Härtegrad draws on the established German controlling distinction between hard facts and soft facts. The model was later adopted into restructuring program management, operational due diligence, Lean management, and operational excellence programs.

The standard version uses five levels (Härtegrad 1–5) with ascending realization status. Variants exist: 6-level models add a Level 0 for raw, unquantified ideas. FTI-Andersch uses a 7-level "Degree of Implementation" (DoI 0–6) scale in their restructuring advisory practice.

The core logic — ascending from idea identification to verified P&L impact — is consistent across all variants. Level names are not industry-wide standardized; exact naming varies between consulting firms.

Level 3 and above can be treated as committed under a defined savings-governance approach — measures that may be counted as reliable contributions in financial planning. Measures at Level 1–2 are tracked as potential but excluded from the committed savings baseline until approval, accountability and implementation planning are in place.

This is the model's core operational discipline: it forces teams to distinguish between ambitious targets and substantiated, governance-approved implementation progress.

The Härtegradmodell originated in German procurement controlling, where it was used to track savings initiatives from sourcing idea to verified budget impact. From procurement, the model migrated into restructuring program management — where it became a widely used approach for structuring measure documentation.

It is not prescribed by any regulatory standard and it is not an international framework. In English-language practice, analogous concepts are called "degree of implementation (DoI)," "savings realization pipeline," "implementation status levels," or "maturity levels (ML)."

Yes — and tracking this is where the model earns its operational value. A measure approved at Level 3 can fall back to Level 2 if a governance decision is reversed. Downward movement is a critical implementation-risk signal that should be assessed in steering and escalated where necessary.

In larger measure portfolios, tracking regression and stagnation patterns across the full portfolio is what transforms the Härtegradmodell from a classification tool into a steering instrument. This requires dedicated tracking; a manual spreadsheet cannot surface these patterns reliably at scale.

A spreadsheet can capture basic level classifications. The structural limitations emerge in larger portfolios: no automatic record of who changed a level or when; manual formula maintenance for financial aggregation by level; no way to flag stagnation patterns automatically; and version conflicts under multi-workstream collaboration.

In larger measure portfolios under time pressure, a spreadsheet tends to become a governance risk rather than a reliable tracking solution.

No. IDW S6 is the German Institute of Auditors' standard for restructuring opinions. It requires traceable documentation of restructuring measures but does not prescribe the Härtegradmodell or any specific classification system.

The Härtegradmodell is a practitioner tool — optional, not mandated — that became a widely used method to fulfill IDW S6's measure-tracking requirements. Different consulting firms use different variants.