For decades, the mainframe has served as the backbone of enterprise IT—delivering unmatched reliability, performance, and scalability for mission-critical workloads. But in 2026, CIOs and CTOs are facing a new challenge: managing the rising cost of mainframe operations.
From increasing Monthly License Charges (MLC) to aging infrastructure and a shrinking talent pool, the total cost of ownership (TCO) for mainframes is under increasing scrutiny. At the same time, organizations are being asked to innovate faster—adopting cloud, AI, and digital services—often with constrained budgets.
As a result, mainframe cost optimization is no longer a technical exercise—it’s a business-critical initiative that directly impacts agility, competitiveness, and growth.
Understanding the core cost drivers is the first step toward reducing expenses.
MLC (Monthly License Charges) is typically the largest component of mainframe costs. Pricing is based on peak system usage, meaning even short-lived spikes can significantly increase monthly bills.
Mainframe systems require specialized infrastructure and periodic upgrades, resulting in high capital and maintenance costs over time.
Mainframes depend on niche skills (e.g., COBOL, z/OS administration). As experienced professionals retire, organizations face:
Running on-premise mainframes involves:
Legacy environments often require custom integration efforts, making it more expensive and time-consuming to connect with modern applications and platforms.
Below are the most effective strategies enterprise IT leaders can implement to optimize costs while maintaining performance and reliability.
What it involves:
Why it works: MLC costs are based on peak demand. Reducing or smoothing peaks can immediately lower monthly expenses.
Typical impact:
What it involves:
Why it works: MFaaS converts large capital expenses into predictable operating costs and removes the burden of hardware management.
Typical impact:
What it involves:
Why it works: This approach addresses the root causes of high costs, enabling long-term efficiency and scalability.
Typical impact:
What it involves:
Why it works: Reducing the workload footprint on the mainframe directly reduces MLC costs and infrastructure strain.
Typical impact:
What it involves:
Why it works: Many organizations overpay due to inefficient licensing structures or lack of visibility into usage.
Typical impact:
What it involves:
Why it works: External providers bring specialized expertise, automation, and economies of scale.
Typical impact:
Mainframe cost optimization isn’t just about reducing spend—it’s about reallocating resources to drive innovation.
Key business benefits include:
Organizations that modernize effectively often see both cost savings and measurable improvements in profitability and business agility.
For regulated industries, the mainframe remains critical due to its security and reliability. Cost optimization strategies must maintain these strengths.
Best practices include:
With the right strategy, it is possible to reduce costs while maintaining the high availability and security standards enterprises depend on.
Mainframes are not going away—but how organizations manage them is changing rapidly.
CIOs and CTOs who take a proactive approach to cost optimization can:
By combining optimization, rehosting, modernization, and hybrid strategies, enterprises can transform their mainframe from a cost center into a strategic asset for future growth.
Start by establishing a clear cost baseline across software, hardware, and labor. Then evaluate phased strategies (optimization, rehosting, modernization) and measure outcomes against expected savings and business value.
Organizations risk rising operational costs, increasing reliance on scarce talent, and reduced ability to invest in innovation—ultimately impacting competitiveness.
Not necessarily. Most enterprises benefit from a hybrid approach that balances modernization with continued use of core mainframe capabilities.
If you’re ready to reduce your mainframe costs while maintaining performance and security, start with a comprehensive cost assessment.
Identifying quick wins and long-term opportunities can help you unlock savings, improve efficiency, and position your organization for the next phase of digital transformation.