Hunting "Zombie" Licenses: A Practical Guide to Reclaiming Wasted SaaS Spend
Nisha Singh · February 27, 2026
Your company is likely paying for hundreds of "zombie" licenses that no one uses. Follow this practical guide to identify, hunt down, and reclaim this wasted SaaS spend.
In horror movies, zombies are slow, relentless, and eat brains. In SaaS management, zombies are silent, invisible, and they eat budget.
A "Zombie License" is a paid seat for software that is not being used. Maybe it belonged to an employee who left the company (but the license wasn't reclaimed). Maybe it was provisioned for a project that ended six months ago. Maybe an employee asked for the "Pro" tier but only uses the "Free" tier features.
Regardless of the cause, the result is the same: You are setting money on fire every month.
The Scale of the Problem
Industry data suggests that nearly 30% of all provisioned SaaS licenses are underutilized or completely unused. If your SaaS spend is $1M a year, that is $300,000 wasted. That is enough to hire two or three more engineers, or fund an entire marketing campaign.
How to Hunt the Zombies
You cannot find zombies by looking at an invoice. An invoice only tells you what you paid for, not what you used. To hunt zombies, you need usage data.
Step 1: Define "Active" Logins alone can be deceiving. Did they just log in to change a password? Look for meaningful engagement.
Slack: Messages sent.
Zoom: Meetings hosted.
Jira: Tickets updated.
Step 2: The 30-Day Rule Use OptyStack to filter your user list. Flag anyone who hasn't logged into a paid tool in the last 30 days. These are your "At-Risk" users. Flag anyone with zero activity in 90 days. These are your Zombies.
Step 3: The "Scream Test" (Automated) Don't just cut access blindly (political suicide). automating the deprovisioning workflow. Send an automated email to the user: "Hi, we noticed you haven't used [App Name] in 60 days. To save costs, we will reclaim this license in 7 days unless you click 'Keep My License' below."
Most users won't click. They know they aren't using it. The license is reclaimed, the cost is saved, and no one complains.
Right-Sizing: The Advanced Hunt
Sometimes a user isn't a full Zombie—they are just "Over-Licensed." Do they really need the $50/month Enterprise license just to view a dashboard? Or would the $10/month Viewer license suffice? Downgrading tiers is a massive hidden opportunity for savings.
Start the hunt today. Your budget will thank you.
