--- title: New Customer MER (ncMER) - Definition & Examples | RGM® Glossary url: https://realgrowthmatters.com/glossary/new-customer-mer-ncmer/ updated: 2026-06-10 source_html: https://realgrowthmatters.com/glossary/new-customer-mer-ncmer/ --- Growth Glossary — Definition SHT NEW-CUSTOMER-M # New Customer MER (ncMER) Revenue from new customers / total marketing spend. A working definition from the RGM marketing glossary. Revenue from new customers / total marketing spend. Term : New Customer MER (ncMER) Field : Measurement & Analytics Category : Measurement & Analytics ## Definition in plain terms Here is the short version.New Customer MER (ncMER) is a measurement method. Fix what it covers before the team debates tactics, and the rest of the conversation gets easier. Revenue from new customers / total marketing spend. This concept relates to how marketing performance is quantified and attributed. Modern measurement layers platform analytics, web analytics, server-side tracking, MMM, and incrementality testing to triangulate true causal impact. New Customer MER (ncMER) belongs to Measurement & Analytics and refers to a measurement method. A shared definition keeps the team aligned. ## How it works Worth a slow read.New Customer MER (ncMER) works one way for a lean team and another for a large one. The mechanics follow the context. New Customer MER (ncMER) behaves unlike a fixed rule. An early-stage brand and a mature one will apply New Customer MER (ncMER) on different terms. The mechanics follow the inputs around it. Treat New Customer MER (ncMER) as a buzzword and the reporting misleads; agree on it and the numbers hold. The working rule is plain. Agree what New Customer MER (ncMER) covers first, then act on it. Skip that order and New Customer MER (ncMER) loses its shared meaning, and two teams end up measuring two different things. Start here. ## When it matters One idea, plainly put.Bring New Customer MER (ncMER) in when a live call depends on it. With no decision on the table, it stays background. Bring New Customer MER (ncMER) in when a live choice hangs on it. In measurement & analytics work, that usually means one of three moments. Away from a decision, New Customer MER (ncMER) is background, not a lever. 1. **Setting budget.** New Customer MER (ncMER) helps decide which channel gets the next dollar. 2. **Choosing a metric.** New Customer MER (ncMER) flags whether the number you report is causal. 3. **Comparing options.** New Customer MER (ncMER) adjusts a compare so the gap is honest. ## An example with real numbers Pick one definition.The walk-through runs New Customer MER (ncMER) through work modeled on DoorDash, so the concept meets real constraints. Take DoorDash. During an MMM refresh, the team made New Customer MER (ncMER) the deciding input, not an afterthought. They set a baseline first, agreed one definition of New Customer MER (ncMER), and only then read the result: 15% of spend moved toward incremental channels. The number matters less than the order. Example walk-through for New Customer MER (ncMER) -- figures illustrative, RGM analysis | Stage | What the team did | The reason | | Baseline | Took a before reading on New Customer MER (ncMER). | Something concrete to compare to. | | Define | Fixed one meaning of New Customer MER (ncMER) for the test. | Two people, one meaning. | | Act | An MMM refresh — one variable. | Only one thing moved. | | Result | 15% of spend moved toward incremental channels | A decision the data earned. | Figures for New Customer MER (ncMER) here are illustrative and marked RGM analysis. Copy the method, not the exact numbers. ## Pitfalls in practice Hold that thought.Four failure modes recur with New Customer MER (ncMER). Name them and they are easy to design around. - **One-size thinking.** Using New Customer MER (ncMER) flat across every segment. The right cut differs by channel and margin. - **No context.** Reporting New Customer MER (ncMER) with no baseline. A bare number cannot be judged. - **Chasing the word.** Optimizing New Customer MER (ncMER) for its own sake. Check it tracks a real outcome. - **Bad compares.** Benchmarking New Customer MER (ncMER) with no adjustment. Account for the model differences first. ## Common questions What does New Customer MER (ncMER) mean? Revenue from new customers / total marketing spend. Agree the scope of New Customer MER (ncMER) before the planning starts. Why does New Customer MER (ncMER) matter? New Customer MER (ncMER) matters because vague vocabulary breaks strategy. A precise, shared definition keeps a team aligned. Where does New Customer MER (ncMER) get used? New Customer MER (ncMER) informs a decision -- most often a budget, a metric choice, or a comparison. The DoorDash example above shows the pattern. What is the most common mistake with New Customer MER (ncMER)? Chasing New Customer MER (ncMER) as a goal and benchmarking it raw. Both bury the real trade-off underneath. Where can I go deeper on New Customer MER (ncMER)? Begin with the linked terms below, then study marketing attribution models, plus what growth marketing is. What does New Customer MER (ncMER) mean? : Revenue from new customers / total marketing spend. Agree the scope of New Customer MER (ncMER) before the planning starts. Why does New Customer MER (ncMER) matter? : New Customer MER (ncMER) matters because vague vocabulary breaks strategy. A precise, shared definition keeps a team aligned. Where does New Customer MER (ncMER) get used? : New Customer MER (ncMER) informs a decision -- most often a budget, a metric choice, or a comparison. The DoorDash example above shows the pattern. ### Related reading ### Related terms