MEASUREMENT WORKSHEET / SOFTWARE ECONOMICS

SaaS ROI Calculator

Estimate first-year software investment, annual benefit, net benefit, ROI, and simple payback from your own cost and benefit assumptions.

All calculator worksheets
01 / Enter your assumptions

Use USD for money. All fields are required. Calculate updates the results; reset restores the illustrative defaults. Inputs stay in your browser.

Include the full annual subscription commitment in USD.
Include setup, migration, training, and internal implementation effort in USD.
Use a documented annual value in USD, not the same benefit counted elsewhere.
Enter your incremental annual revenue scenario in USD. This is not a forecast.
Include annual costs genuinely displaced, excluding amounts already counted as labor savings.

02 / Results

Illustrative default results. Change inputs and select Calculate.

Total first-year investment
$15,000.00
Annual benefit
$18,000.00
Net first-year benefit
$3,000.00
ROI
20.0%
Simple payback months
10.0 months

Formula

Investment = software + implementation. Benefit = labor + revenue + avoided costs. Net = benefit − investment. ROI = net ÷ investment × 100. Payback months = investment ÷ benefit × 12 when benefit is greater than zero.

Worked example

The illustrative defaults use $12,000 software cost and $3,000 implementation cost, for $15,000 investment. Benefits of $10,000 labor, $6,000 revenue, and $2,000 avoided costs total $18,000. Net first-year benefit is $3,000, ROI is 20.0%, and simple payback is 10.0 months.

Interpret the result

A positive ROI means the entered first-year benefits exceed the entered first-year investment. A negative result means they do not. Zero benefit produces a negative net benefit and no finite payback estimate. The payback calculation treats annual benefit as evenly spread across twelve months, not as a dated cash-flow schedule.

Assumptions and input rules

All amounts must use the same currency and annual period. Investment must be greater than zero. Separate one-time implementation from recurring software cost. Keep a note of each benefit source, its owner, and the work needed to realize it. Reset restores the illustrative inputs and their results, not your last submission.

Limitations

This simple model does not discount future cash flows, model taxes, or account for a delayed rollout. Labor capacity released is not necessarily cash saved. Revenue is included as requested, not converted to contribution margin; a margin-based assessment may be more appropriate for your financial review. Avoid counting one retained contract as both revenue gain and avoided cost. Add ongoing administration to your cost assumptions if relevant, and compare conservative scenarios rather than treating one number as approval to buy.