Return on Investment (ROI) is a measure of how much value an investment returns compared with what it cost. In technology buying, it is the case for spending money: a new contact center platform, an AI tool or a network upgrade should save more, earn more or reduce more risk than it costs. ROI is expressed as a ratio or percentage: net gain divided by cost. Finance teams often pair it with separate measures, such as payback period (the time it takes for benefits to cover the cost), net present value and internal rate of return, which account for when money comes in and goes out.
At a glance
- ROI compares benefits with costs: (gain minus cost) divided by cost.
- Costs should come from a full total cost of ownership (TCO) view, not just the purchase price.
- Benefits can be cost savings, new revenue, productivity, or reduced risk; some are easier to measure than others.
- ROI ignores timing; payback period, net present value and internal rate of return are separate measures often used alongside it.
- A credible ROI case states its assumptions and sets a baseline to measure against.
What problem it solves
Every technology project competes for budget with other projects and with not spending at all. ROI gives finance, leadership and IT a common way to compare them. It forces the people proposing a project to say what it will achieve and by how much, and it gives the organization something to check against after rollout.
It also helps buyers handle vendor claims. Most vendors present an ROI story; turning that story into the organization’s own numbers is how a buyer separates a real business case from marketing.
How it works
Count the costs. Include one-time and recurring costs over the same period: licences or subscriptions, implementation, migration, training, internal staff time, and any overlap while old and new systems run together. A TCO model is the usual source.
Estimate the benefits. Typical categories for IT and telecom projects include:
- Hard savings: retired systems, cancelled contracts, lower carrier or cloud bills.
- Productivity: hours saved per task, faster handling or resolution, fewer manual steps.
- Revenue: higher conversion, retention or capacity to serve more customers.
- Risk reduction: fewer outages or incidents, though these are harder to value and often presented separately.
Do the math. Simple ROI is (total benefits minus total costs) divided by total costs. Because simple ROI does not reflect when costs and benefits occur, finance teams evaluating multi-year projects often add separate measures alongside it, such as net present value (which discounts future cash flows), internal rate of return or payback period. Where a project changes the mix of upfront and ongoing spending, the CapEx vs. OpEx view also matters.
Measure afterwards. Record a baseline before the project and measure the same metrics after. Without a baseline, ROI is a forecast that can never be confirmed.
For AI projects, where ROI claims are common and outcomes vary, our artificial intelligence solution page covers how buyers scope pilots and measure results.
When it matters for buyers
- Building a business case. Most significant purchases need an ROI estimate to get approved.
- Evaluating vendor claims. Use the same ROI method across vendors, ideally as part of a request for proposal (RFP), so the numbers are comparable.
- AI and automation projects. Benefits depend on adoption and process change, so measurement plans matter as much as the estimate.
- Contact center modernization. Gains in agent productivity and customer experience need clear metrics to be credible.
- A new CFO or board initiative. Leadership changes often bring a review of what past projects actually delivered.
Questions to ask vendors
- What specific outcomes have customers like us measured, and how were they measured?
- What assumptions sit behind your ROI estimate: adoption rate, hours saved, price per hour?
- Which costs does your model include, and which does it leave out (migration, training, internal staff, overlap)?
- How long did comparable customers take to reach the benefits you describe?
- Can we run a pilot with agreed success metrics before committing?
- Will you share reference customers we can ask about results?
How it differs from total cost of ownership
TCO answers “what will this cost over its life?” ROI answers “is what we get back worth that cost?” TCO is one input to ROI, the cost side. Two options with the same TCO can have very different ROI if one delivers more value, and the option with the lowest TCO is not necessarily the best investment. In practice, buyers build the TCO first, then use it alongside expected benefits to estimate ROI. Cost efficiency is the broader goal both measures serve.