SaaS Spend Calculator

Add every software subscription to calculate monthly and annual spend, category mix, cost per employee and estimated unused-seat spend. Free, no signup.

Estimate your monthly and annual software spend across seat-based tools, flat subscriptions, annual contracts, and usage or add-on costs.

Add every software subscription to see total monthly and annual spend, category mix, cost per employee, and a directional unused-seat opportunity before renewal.

Use invoice prices after discounts where possible.

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Quick answer

A SaaS spend calculator estimates the total cost of a software stack by combining seat-based subscriptions, flat monthly plans, annual contracts, usage charges, add-ons, and overages. An unused-seat scenario can then estimate how much seat-based spend deserves review before renewal.

Formula

Monthly SaaS spend = seat-based monthly cost + flat monthly subscriptions + annual contracts ÷ 12 + monthly usage and add-ons

Example

50 users at $150 of seat-based software per month plus $2,000 of flat subscriptions, $12,000 of annual contracts, and $1,000 of monthly usage equals about $11,500 of monthly software spend.

How to interpret it

Use the total as a starting point for renewal reviews. Verify actual seat activity in each vendor admin console before treating modeled unused-seat spend as removable cost.

Methodology, assumptions and limitations