How Redress Compliance eliminated $15 million in non-compliance exposure and achieved $6.5 million in recurring annual savings through mainframe MLC optimisation, workload rebalancing, legacy application decommissioning, and a long-term compliance governance framework.
This case study is part of our IBM Licensing Case Studies series. For mainframe-specific guidance, see IBM Mainframe Software Licensing: A CIO's Advisory. For broader IBM guidance, visit the IBM Knowledge Hub.
| Client Overview | |
|---|---|
| Industry | Financial Services — Global Banking |
| Presence | Multiple Regions |
| IT Environment | Heavy mainframe reliance for transaction processing, risk management, and regulatory compliance |
| Issue | $15 million non-compliance exposure, high MLC costs, overprovisioned workloads, underutilised entitlements, complex sub-capacity reporting |
| Services Provided | Comprehensive IBM Licensing Review, Mainframe MLC Optimisation, Workload Rebalancing, Compliance Framework Development |
| Outcome | $15M exposure reduced to $0. $6.5M annual savings achieved. 30% reduction in mainframe licensing costs. Full compliance with IBM mainframe terms. |
A global financial institution operating across multiple regions engaged Redress Compliance to conduct a comprehensive IBM licensing review, focusing on its mainframe environment. The institution relied heavily on mainframe systems for critical banking operations, including transaction processing, risk management, and regulatory compliance.
With high licensing costs and complex usage metrics, the organisation sought to ensure compliance, optimise licence usage, and reduce unnecessary expenses. The intricate nature of IBM's mainframe licensing structure, including Monthly Licence Charges (MLC) and sub-capacity rules, required specialised expertise to navigate effectively.
The Risk. The institution faced $15 million in non-compliance exposure from discrepancies in mainframe usage reporting, overprovisioned workloads, and misaligned entitlements. IBM's mainframe licensing is among the most complex and expensive in the enterprise software landscape. MLC fees are calculated based on peak rolling four-hour average utilisation, meaning even short processing spikes can dramatically inflate costs. Without expert analysis, the institution was simultaneously overpaying on MLC and carrying significant hidden compliance risk.
Why MLC Optimisation Matters. IBM Monthly Licence Charges represent one of the largest recurring software costs for financial institutions. MLC fees are tied directly to peak mainframe utilisation, specifically the rolling four-hour average (R4HA), meaning that workload scheduling, LPAR configuration, and processing peaks all directly impact how much you pay each month. Organisations that do not actively manage these variables routinely overpay by 20 to 40%.
Redress Compliance conducted a four-phase engagement covering licensing analysis, non-compliance identification, cost optimisation, and long-term governance.
Reviewed IBM mainframe licensing agreements including MLC and one-time charges (OTC) entitlements. Evaluated workload configurations and usage metrics to ensure accurate sub-capacity reporting. Conducted a detailed assessment of peak usage patterns across all LPARs to identify optimisation opportunities and entitlement misalignments.
Validated mainframe usage data to identify discrepancies and potential non-compliance risks, finding that the institution's $15M exposure stemmed from inaccurate sub-capacity reporting and entitlement mismatches. Discovered overprovisioned workloads and underutilised entitlements contributing to inflated costs. Identified opportunities to adjust workloads and optimise processing peaks to minimise MLC fees.
Implemented workload rebalancing strategies to reduce peak utilisation, directly lowering MLC costs by $5 million annually. Recommended decommissioning legacy mainframe applications no longer required, freeing up resources and saving an additional $1.5 million per year. Reallocated unused mainframe entitlements to align with actual usage, eliminating the need for additional licence purchases.
Developed a compliance framework incorporating automated tools for real-time monitoring of mainframe usage. Delivered targeted training for IT and operations teams to enhance understanding of IBM mainframe licensing policies. Established a regular audit schedule to ensure ongoing compliance, cost control, and proactive management of MLC variables.
"Financial institutions are uniquely exposed to IBM mainframe MLC inflation because their processing patterns feature sharp peaks during market hours, end-of-day batch processing, and month-end/quarter-end cycles. These peaks directly drive the rolling four-hour average that determines MLC costs. By rebalancing workloads, scheduling batch jobs outside peak windows, optimising LPAR capping strategies, and retiring legacy applications that unnecessarily consume capacity, organisations can achieve 25 to 40% reductions in MLC without any loss of processing capability or performance."
Redress Compliance IBM Advisory Team
The institution's entire $15 million non-compliance exposure was eliminated through accurate sub-capacity reporting, entitlement realignment, and remediation of usage discrepancies.
The institution moved from significant hidden risk to fully documented, verifiable compliance with all IBM mainframe licensing terms. Audit-ready at any time.
Workload rebalancing strategies reduced peak utilisation, directly lowering Monthly Licence Charges by $5 million per year.
Legacy mainframe applications no longer required were identified and retired, freeing resources and reducing annual costs by $1.5 million.
Combined MLC optimisation and decommissioning delivered $6.5 million in recurring annual savings, year after year.
| Metric | Result |
|---|---|
| Mainframe Licensing Cost Reduction | 30% reduction in overall mainframe licensing costs |
| Processing Peak Reduction | 25% reduction in processing peaks through workload rebalancing |
| Software Portfolio | Streamlined mainframe software portfolio with improved IT governance across all regions |
| Resource Allocation | Improved efficiency in mainframe resource allocation and LPAR configuration |
| Compliance Posture | Fully compliant with IBM mainframe licensing terms. Audit-ready. |
| Governance | Automated monitoring, regular audit schedule, and trained IT/operations teams |
"Redress Compliance's expertise in IBM mainframe licensing was invaluable. Their recommendations not only ensured compliance but also unlocked significant cost savings. We are now operating more efficiently, with a clear strategy for long-term cost management and scalability."
CIO, Global Financial Institution
| Key Result | Detail |
|---|---|
| Initial Exposure | $15,000,000 |
| Final Exposure | $0 — fully remediated |
| Annual Savings | $6,500,000 ($5M MLC + $1.5M decommissioning) |
| Cost Reduction | 30% reduction in overall mainframe licensing costs |
| Peak Reduction | 25% reduction in processing peaks |
| Compliance | Fully compliant with all IBM mainframe licensing terms |
Need IBM mainframe licensing expertise? If your organisation relies on IBM mainframe systems and wants to ensure compliance, reduce MLC costs, and optimise your licensing position, contact us today. Our independent IBM licensing experts have helped financial institutions save tens of millions through mainframe optimisation. IBM Licensing Assessment | Book a Consultation
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