This custom software and automation ROI calculator estimates the return on a specific development or automation project, showing payback period, three-year net benefit, and how sensitive the result is to your assumptions. It is built for internal business cases where you need to justify a build to a finance stakeholder, not for marketing spend or general investment analysis. Enter your current process costs, expected efficiency gain, and project budget to model the outcome. Bring the result to TechEsperto for a scoping review that firms up the cost side.
This tool answers one question: does building this system return more than it costs, and how quickly. It handles the two benefit types that custom software and automation actually produce, which are labour time recovered and error or leakage reduced. It deliberately excludes speculative revenue upside, because business cases built on projected new revenue rarely survive scrutiny from finance teams and rarely match reality afterwards.
Hours currently spent on work the system will automate or accelerate, valued at loaded labour cost. This is the most defensible benefit category and usually the largest.
Cost of mistakes, rework, missed billing, or compliance exposure that the system reduces. Quantifiable where you have historical incident data to reference.
Build cost plus internal time, plus annual maintenance and hosting across the horizon. Our business process automation engagements produce this figure during scoping.
Months until cumulative benefit exceeds cumulative cost. Finance stakeholders generally care more about payback than about a three-year ratio, since payback determines cash exposure.
Cumulative benefit minus cumulative cost over three years. Long enough to be meaningful, short enough that the assumptions remain credible under challenge.
Every input should come from a measurement or a documented estimate rather than a feeling. The most common cause of a business case failing review is inputs that cannot be sourced. Where you lack a measurement, use a conservative figure and note it, because a defensible modest ROI is far more persuasive to a finance stakeholder than an impressive number nobody can trace back to evidence.
How many staff perform the process and how many hours each spends weekly. Measure this over a normal period rather than estimating from memory.
Salary plus employer costs and overhead, not base salary alone. Using base salary understates benefit by a substantial margin and weakens the case unnecessarily.
Realistic percentage of that time the system removes. Full elimination is rare, since review, exception handling, and oversight usually remain in some form.
Annual cost of rework, corrections, or leakage in this process, with a source. Our data analytics work often surfaces this figure where it has never been measured.
Development estimate, expected delivery duration, and internal time required. Longer timelines delay benefit realisation, which the calculator reflects in payback.
Hosting, licences, and maintenance. Applying a maintenance rate of fifteen to twenty percent of build value is realistic for most custom systems.
The model is transparent so a finance reviewer can verify it rather than trust it. Annual benefit is time recovered valued at loaded cost, plus error reduction. Annual cost is running cost, with build cost applied in year zero. Benefit is phased in rather than switched on, because no system delivers full benefit from day one. Payback is the month cumulative benefit overtakes cumulative cost, and the tool shows how that moves under less favourable assumptions.
(hours per week x weeks x people x reduction percent x loaded rate) + error reduction. Weeks default to forty-six to account for leave and holidays rather than fifty-two.
Benefit ramps across the first months after delivery rather than starting at full value. Adoption, training, and process adjustment all delay full realisation.
Build cost and internal time in year zero, running cost annually thereafter. Delivery duration shifts the start of benefit accrual, which materially affects payback.
The month at which cumulative benefit exceeds cumulative cost. Under eighteen months is generally straightforward to approve, beyond thirty-six months usually needs strategic justification.
The tool re-runs at seventy percent of your expected time reduction. If the case still holds at that level, it is robust enough to present with confidence.
Overstated business cases damage credibility for every subsequent request, so the calculator applies conservative defaults deliberately. The five errors below appear in most first-draft ROI models we review, and each one inflates the result in the same direction. Correcting them produces a smaller number that survives scrutiny, which is considerably more useful than a large number that collapses under a single question from finance.
Automation rarely removes a task entirely. Exception handling, review, and oversight persist, so applying a realistic reduction percentage rather than complete removal keeps the case defensible.
Understating labour cost weakens a genuine case. Include employer contributions and overhead, since that is the actual cost of the time being recovered.
Treating a build as one-time cost overstates multi-year return significantly. Our workflow automation proposals include running cost precisely to avoid this.
Recovered hours only become savings if headcount changes or the time is redeployed to measurable value. State which applies, because finance stakeholders will ask this first.
A system nobody uses returns nothing. Include training, change management, and a realistic adoption ramp rather than assuming immediate full uptake across the team.
A calculator output is evidence, not an argument. A business case that gets approved states the problem in operational terms, sources every input, presents a conservative and an expected scenario, and names who owns the outcome. Presenting a single optimistic figure invites challenge on the number rather than discussion of the decision. The five steps below convert the tool’s output into something a finance committee can actually approve.
Attach a reference to each figure, whether a time study, an incident log, or a finance report. Unsourced inputs are where business cases get rejected.
Show both scenarios rather than one. Demonstrating that the case holds under pessimistic assumptions is more persuasive than an impressive single figure.
Explain whether hours convert to reduced headcount, absorbed growth, or redeployment to specific higher-value work. Vagueness here undermines the entire benefit calculation.
Name the metric, the baseline, and the measurement date. Our dashboard development work makes post-delivery verification routine rather than anecdotal.
An estimated build cost is the weakest part of most cases. A properly scoped figure removes the easiest objection available to a reviewer, so get it before you present.
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Quantify annual benefit as staff hours recovered valued at loaded labour cost plus reduced error or leakage cost. Subtract build cost and annual running cost. Divide net benefit by total investment for ROI, and identify the month cumulative benefit overtakes cumulative cost for payback.
Under eighteen months is generally approved without difficulty. Eighteen to thirty-six months usually requires a clear strategic rationale alongside the numbers. Beyond thirty-six months, the assumptions typically carry too much uncertainty to be relied on for a build decision.
Generally no. Speculative revenue upside rarely survives finance review and rarely matches reality. Build the case on cost reduction and error avoidance, which are measurable and defensible, then present revenue potential separately as unquantified upside.
Use loaded hourly cost including employer contributions and overhead, not base salary. Then state explicitly whether recovered hours convert to reduced headcount, absorbed growth without hiring, or redeployment to specific work. Unspecified time saving is the weakest form of benefit claim.
Hosting and infrastructure, third-party licences and API usage, and maintenance at roughly fifteen to twenty percent of build value annually covering security patching, dependency updates, and iteration. Omitting these overstates three-year return substantially and invites justified challenge.
Usually because time elimination was assumed complete, maintenance was omitted, benefit was modelled as immediate rather than ramped, or recovered hours were counted as cash without explaining how. Re-run with a seventy percent reduction assumption to test whether the case genuinely holds.
Tell us what you’re building. Our team will get back to you within one business day with a clear, no-obligation plan.
