Unused SaaS License Calculator

Paid seats assigned to people who left or never log in are one of the most common sources of wasted software spend. Enter what you pay for and how many people actually use the tool.

e.g. signed in within 30 days
For new hires
Unused seats cost you
$1,728.00 / year
Unused seats
12
Wasted per month
$144.00
Utilization
76%
Yearly bill after right-sizing
$5,760.00

How it's calculated

Unused seats = paid seats − active users
Yearly waste = unused seats × price per seat × 12
Utilization = active users ÷ paid seats
Right-sized bill = (active users + spare seats) × price × 12

In the example, 50 paid seats with 38 active users leaves 12 idle seats, which cost $1,728.00 a year at $12.00 per seat per month. Keeping 2 spare seats, the tool would cost $5,760.00 a year.

A simple license clean-up routine

  1. Export each tool's user list with last-active dates.
  2. Remove or reassign seats for people who have left.
  3. Ask inactive users whether they still need access before removing it.
  4. Set a calendar reminder 60 days before each renewal to repeat the check.

To see the whole picture across every tool, use the SaaS stack cost calculator.

What published research says about unused licenses

Figures about license waste are repeated everywhere, often without a source. These are the ones we traced to the original publisher and read ourselves (November 2026). All come from companies that sell software-management products or services, and most describe large organizations, so treat them as context, not as a benchmark for a small business. Your own admin console is the only number that matters for you.

FigureWhat it measuresWho and when
54% of licenses usedAverage share of an organization's SaaS licenses in use (so about 46% unused)Zylo blog, updated March 2026; Zylo customer data
$19.8M a yearAverage spend on unused SaaS licenses per organization; $3.8M for organizations with up to 500 employeesZylo 2026 SaaS Management Index, as reported on the Zylo blog
32%Respondents' own estimate of underused or wasted SaaS spendFlexera 2023 State of ITAM; 500 IT asset professionals at organizations with 1,000+ employees
305 apps (median 240)Average SaaS portfolio sizeZylo 2026 SaaS Management Index

We left out widely shared figures we couldn't trace to a readable original, including several attributed to analyst firms. If you know the original source of a figure you've seen elsewhere, tell us via the contact page.

Questions and answers

How do I find unused software licenses?

Most SaaS admin consoles show each user's last sign-in or activity date. Export the user list, filter for people who haven't signed in for 30 to 90 days, and check the list against current staff. Also look for licenses still assigned to people who have left.

What counts as an "active" user?

Pick a rule and apply it consistently, for example "signed in at least once in the last 30 days". For tools people open only occasionally, such as finance or design apps, use a longer window like 90 days before removing a seat.

Why keep a buffer of spare seats?

New hires and contractors need access quickly, and some contracts make adding seats slow. A small buffer avoids blocking people while still removing most of the waste.

Can I get money back for unused annual seats?

Usually not mid-term: annual contracts typically let you add seats but not remove them until renewal. The saving comes from buying fewer seats at the next renewal, so check utilization a month or two before the renewal date.

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