What ROI Does the Right Tool Deliver in an ERP Project?

ERP projects run an average of 20–45 percent over budget. Most overruns have little to do with the system itself costing more than expected — they come from rework, delayed test cycles, and defects that reach production. A structured requirements and test management tool reduces those costs by creating traceability, shortening test cycles, and giving the project a decision-making foundation built on actual data rather than estimates.

Why ERP Projects Spiral Out of Control

Most organisations underestimate what an ERP project actually costs. The licence fee appears in the quote, but consulting hours, customisations, data migration, training, and the internal time spent by key personnel typically account for more than half of the total cost — and rarely appear in the original budget. According to Gartner and Panorama Consulting, 55–75 percent of all ERP projects exceed their budget or timeline, with an average overrun of 20–30 percent. McKinsey finds that large IT projects run 45 percent over budget on average and deliver 56 percent less value than planned.

There are systematic reasons why projects go off track. The most common are:

Poor requirements management

Unclear requirements are at the root of most overruns. They lead to late-stage changes, and late-stage changes are expensive. The FIT/GAP analysis with the vendor becomes inefficient and results in customisations that could have been avoided.

Underestimated data migration

Experience shows that at least three to five migration rounds are needed to reach acceptable data quality. Every extra round means consulting hours and internal time that were never budgeted for — a cost that rarely appears in the original plan.

Unstructured testing

Defects that are not caught during testing cost 10–100 times more to fix once live, according to IBM Systems Sciences Institute. Without a structured tool, it is also difficult to coordinate hundreds of test cases, results, and defects in a way that gives the steering committee a reliable basis for decisions.

Dependency on the implementation partner

Organisations that hand over control to their partner risk maintenance costs up to 20 percent higher, according to KPMG. PwC finds that test cycles take 15–25 percent longer when manual tools are used. If the partner rotates staff — or if the organisation changes partner — institutional knowledge leaves with them.

What a Requirements and Test Management Tool Does for Costs

Traceability is the foundational value. When a requirement changes, it is immediately clear which test cases are affected. When a test case fails, it is clear which business requirement has not been met. That connection reduces rework and makes it possible to take well-informed go-live decisions based on data.

Shorter test cycles free up time and resources. In projects without structured test management, a significant portion of testing time goes to manually coordinating, compiling, and following up on results. Experience from larger implementations shows that overhead savings during the test phase can amount to the equivalent of two full-time positions. PwC finds that test cycles take 15–25 percent longer when manual tools are used — in larger projects, that can translate to weeks of lost time.

Control that stays with the organisation reduces dependency on external consultants. Documentation, history, and decisions stored in a tool the organisation owns do not disappear when a partner is replaced. In practice, the absence of an organisation-owned tool frequently leads to missed requirements and defects reaching the production environment. Panorama Consulting finds that changing partners without control over project data regularly results in delays of several months.

Lower costs in future rollouts are most visible in global deployments or multi-site implementations. Organisations that have structured their testing work can reuse up to 70–80 percent of test cases in the next rollout — reducing the time and effort required to get started.

How Do You Calculate ROI?

ROI for a requirements and test management tool is best calculated by comparing the cost of the tool against the costs that arise without it. The items to factor in include:

• Coordination time during the test phase — how many people are involved in the testing effort, and how many hours per week are spent manually compiling results, following up on defects, and reporting to the steering committee?
• Defects reaching production — how many production incidents occurred in previous projects, and what did each incident cost to investigate and resolve?
• Onboarding new project members — how long does it take to bring a new resource up to speed on the project’s current status and history without a centralised tool?
• Delays from partner changes — what would a delay of several months cost in consulting fees and internal lost productivity?
• Testing for new rollouts or upgrades — how much time goes into rebuilding requirements and test structures from scratch before each rollout or upgrade, compared with reusing existing documented work?

What Does the Difference Look Like in Practice?

The difference between having a structured tool and not having one is most visible when something goes wrong.

Without documented, traceable requirements, the FIT/GAP analysis with the vendor is a negotiation without a foundation. Requirements are forgotten, interpreted differently by different parties, and surface as conflicts or defects late in the project. With a tool, the same analysis becomes a review of actual business needs against the system’s standard functionality — with written documentation that both parties can be held accountable to.

Without structured testing, defects are discovered once they are already in production. At that point they are no longer a testing problem but an operational one — bringing with them emergency troubleshooting, halted processes, and lost confidence. With a tool, those same defects are caught during the test phase, resolved before go-live, and documented so they do not recur in the next release.

Without control over project data, the organisation depends on the right people being available — at the partner and internally. If the partner rotates a consultant mid-project, the knowledge goes with them. If the organisation changes partner, so does the history. With an organisation-owned tool, the documentation remains regardless of who leaves the project.

Without reusable test cases, every upgrade starts from scratch. With a structured test library, the foundation is already in place — and each new release takes less time to prepare than it would otherwise.

Further Reading

• How Lantmännen managed 1,500 test cases and 40 testers, saving the equivalent of two full-time positions in overhead costs during the test phase.
• How Vätterhem completed a system replacement for 200 employees and stayed on budget and on schedule through structured requirements management.
• Which requirements and test management tool is right for your organisation — and what sets Reqtest, Jira, Azure DevOps, TestRail, and Excel apart?
• Read our white paper on the key factors for a successful ERP implementation and what determines whether a project succeeds.

Frequently Asked Questions

Do you need a dedicated tool, or is Excel enough?

Excel works for a contained project with few participants. As soon as multiple roles need to coordinate test cases, report defects, and give the steering committee a consolidated view of project status, spreadsheets fall short — version control and traceability do not hold up as the project scales. Dedicated requirements and test management tools are built specifically for that work and handle coordination without creating bottlenecks or single points of failure.

How quickly does a requirements and test management tool pay off?

In most projects, the impact is noticeable from the first test cycle. Shorter coordination time, fewer email threads, and a consolidated view of defects free up time that would otherwise go to administration. Experience shows that business users can be self-sufficient after a very short onboarding period — which significantly reduces the internal ramp-up cost per project.

How do you demonstrate the value to a steering committee?

Start with the costs of the test phase: how many people are involved, for how long, and at what cost? Add the risk cost of defects reaching production. That produces a business case in financial terms, not technical ones.

What happens if you change implementation partner mid-project?

If the documentation lives in the partner’s system, control leaves with the partner. Panorama Consulting finds that changing partners without control over project data regularly causes delays of several months. With an organisation-owned tool, the full history remains available regardless of who is driving the implementation.