How to calculate ROI on a custom software project
Custom software ROI indicates whether a project is a worthwhile investment for a business, and it’s calculated by weighing total project costs against the financial benefits and long-term value.

A custom software project is an investment, so understanding its potential return is essential. While the upfront cost is often higher than buying off-the-shelf software, a custom solution is designed around your business, making it easier to improve efficiency, reduce costs, and support long-term growth.
Understanding custom software ROI helps businesses make informed decisions based on measurable outcomes rather than assumptions.
What is custom software ROI?
Return on investment (ROI) measures the financial value a project delivers compared to its cost. It aims to answer the question: Will the benefits outweigh the investment?
A basic ROI formula is:
ROI = (Total Benefits − Total Costs) ÷ Total Costs × 100
For example, if a custom software project costs R500,000 and delivers R750,000 in measurable benefits over several years, the ROI is:
(R750,000 − R500,000) ÷ R500,000 × 100 = 50%
While this calculation is straightforward, identifying all the benefits requires a broader view.
Identify the total project costs
Start by calculating every cost associated with the project. This includes:
- Software design and development
- Testing and deployment
- Staff training
- Maintenance and support
- Future enhancements
Including the full lifecycle cost provides a more accurate picture than development costs alone.
Measure the financial benefits
The value of custom software often comes from improving the way your business operates. Measurable benefits include:
- Reduced manual work
- Faster processes
- Lower operational costs
- Reduced software licensing fees
Don’t overlook long-term value
Not every benefit can be measured immediately. Custom software can provide long-term advantages that strengthen the business over time, such as:
- Better customer experiences
- Improved reporting and decision-making
- Greater scalability as the business grows
Although these outcomes may be harder to quantify, they often contribute significantly to the overall return.
Track ROI after implementation
Calculating ROI shouldn’t end once the software goes live. Compare actual performance against the goals established at the start of the project. Track metrics like time saved, operating costs, customer satisfaction, and sales growth. Monitoring these results helps identify additional opportunities for optimisation and demonstrates the ongoing value of the investment.
Improve your custom software ROI with Netgen
We develop custom software solutions that solve real business challenges and deliver measurable value. Get in touch to find out how our team can help you create custom software that delivers a strong return on investment.



