Procurement
SaaS stack waste finder
Quick triage: enter your tool count, annual spend, and rough % of features actually used. Returns wasted spend, savings from a 20% trim, and the next audit's payback.
When this calculator helps
- Annual board-deck slide showing the cost of SaaS sprawl.
- Building the case for a FinOps role or vendor management hire.
- Setting the audit target before the actual deep-dive begins.
When to look elsewhere
- Stacks under 10 tools, the audit overhead exceeds the savings.
- When you have already-instrumented utilization data per tool (use that instead of a guess).
Worked example
A 250-person company runs 42 SaaS tools across the org with a total annual spend of $310,000. The IT lead pegs average feature utilization at 60 percent based on a recent internal survey. Estimated annual waste: $310,000 times 0.40, or $124,000. A 20 percent audit trim would save $62,000 in year one.
Per-tool averages add detail: average spend per tool is $7,381, and average waste per tool is $2,952. The audit conversation becomes: which 8 to 10 tools (20 percent of 42) are the obvious targets? Usually a mix of redundant ones (two project trackers, two chat apps), low-utilization ones (the survey tool no one logs into), and zombie subscriptions (the design tool from a project that shipped two years ago).
How this calculator works
The model assumes utilization is roughly evenly spread across tools. Total waste is total annual spend times (one minus utilization rate). The "20 percent audit trim" output applies a flat 20 percent cut to total spend as a quick benchmark for the savings a typical SaaS rationalization project recovers in the first pass.
Real audits typically recover 60 to 80 percent of the modeled waste because some low-utilization tools are protected for compliance reasons (a security tool used quarterly), vendor lock-in, or political reasons (the team's preferred tool). Use this calculator to size the prize and decide whether a deeper audit is worth running; do not present its output as the negotiated saving without doing the per-tool homework first.
Frequently asked questions
How accurate is the 'estimated waste' number?
Directional only. Real audits typically find 60-80% of the modeled waste once you account for must-keep low-utilization tools (security, compliance, vendor-mandated).
What's a typical SaaS stack waste rate?
Industry benchmarks put it at 30-50% across mid-market stacks. Companies past 100 tools usually clock 50%+ waste.