Software License Cost Calculator
Calculate multi-year enterprise volume software licensing expenses, comparing perpetual license break-even years against recurring annual subscription models.
Calculated Software & Subscription Breakdown
License Break-Even Formula
Perpetual Total(Y) = Initial License + [Annual Maint * (Y - 1)]; Subscription Total(Y) = Annual Subscription * Y; Break-even when Perpetual <= Subscription- License Quantity: Number of provisioned workstation seats or cores.
- Perpetual License Price: Initial purchase cost per seat for permanent ownership.
- Software Assurance / Maintenance: Annual support and version upgrade fee (typically 18% to 22% of license cost).
- Subscription Price: All-inclusive annual subscription fee per seat.
Step-by-Step Worked Example
Calculation Steps:
- Perpetual Year 1: $12,000.00
- Perpetual Years 2-5: 4 * $2,400 = $9,600.00
- Perpetual 5-Year Total: $12,000 + $9,600 = $21,600.00
- Subscription 5-Year Total: 20 * $250 * 5 = $25,000.00
- Net Difference: Perpetual license is $3,400 cheaper over 5 years (break-even in Year 4).
How to Use This Calculator
- 1Enter the quantity of software seats or user licenses needed.
- 2Input the upfront perpetual license fee per seat and annual maintenance percentage.
- 3Enter the competing annual subscription price per seat.
- 4Review total costs across the horizon and find the exact break-even year.
Assumptions & Limitations
- Assumes maintenance is renewed continuously to maintain vendor support eligibility.
- Excludes hardware server hosting costs for on-premises deployments.
Frequently Asked Questions
What is Software Assurance in volume licensing?
Software Assurance is an ongoing vendor maintenance program (standard with Microsoft and Autodesk) that provides version upgrades, technical support, disaster recovery rights, and cloud deployment flexibility.
What happens if a company stops paying perpetual software maintenance?
The company retains the right to run the version installed at the time maintenance lapsed, but loses access to new security patches, feature upgrades, and official vendor technical support.
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