IBM License Metric Tool Services from Northdoor

What is IBM License Metric Tool (ILMT)?

IBM License Metric Tool is a software discovery and license management solution designed to help organizations track their IBM software usage and maintain compliance with licensing agreements.

The tool automatically scans your IT environment to discover IBM software deployments, monitor resource consumption, and generate the reports needed to demonstrate compliance with IBM’s sub-capacity licensing terms. For organisations using virtualised or cloud environments, ILMT provides the detailed usage data required to qualify for sub-capacity pricing—potentially reducing licensing costs by 50% or more compared to full-capacity licensing.

Why do you need ILMT?

It’s mandatory for sub-capacity licensing. If your organisation wants to benefit from IBM’s sub-capacity licensing model (paying only for the virtual CPU capacity allocated to IBM software rather than the full physical server capacity), deploying and maintaining ILMT is a contractual requirement. Without it, IBM may require you to license at full capacity—significantly increasing costs.

Audit readiness IBM conducts regular license audits. Organisations must be able to produce accurate, up-to-date license reports demonstrating compliance. ILMT provides the audit trail and reporting IBM expects to see, reducing audit risk and the potential for costly penalties or back-payments.

Cost optimisation. Manual tracking of software deployments across a complex, dynamic IT environment is impractical. ILMT provides visibility into what’s actually deployed and used, helping you avoid both over-licensing (wasting budget on unused capacity) and under-licensing (risking non-compliance penalties).

Complexity management Modern IT environments—with virtualisation, cloud deployments, and frequent infrastructure changes—make it nearly impossible to track license usage manually. ILMT automates discovery and reporting, saving significant time and reducing the risk of human error.

However, ILMT itself requires expertise. Whilst IBM provides ILMT free of charge, deploying it correctly and maintaining its ongoing operation requires specialist knowledge. Misconfiguration can lead to inaccurate reporting, which defeats the purpose. Many organizations lack the internal resources or expertise to manage ILMT effectively—which is where specialist support becomes valuable.

Ready to optimise your IBM licensing costs?

Download our comprehensive ILMT guide to learn how Northdoor’s managed services can reduce your software spend whilst ensuring continuous compliance—without the complexity.

Click here to find out more about ILMT