KPIs: what they are and how to choose metrics that actually matter

What a KPI is, or a key performance indicator

A KPI (Key Performance Indicator), or key performance indicator, is a single measure that shows whether a company or department is moving toward its most important goal for a given period. All three words in the name matter, and each one narrows the meaning. "Key" means there are a few indicators, not a few dozen. "Performance" means we measure something that can be counted and compared over time. "Indicator" means it is about the result, not about the team's effort alone.

The practical definition we use with clients is this: a KPI is a number that someone actually uses to decide whether to shift budget, change priorities, or slow down. If no decision depends on a given number, that number is not a KPI. It may be an interesting metric, but it is not a key indicator.

It is worth clearing up the most common misunderstanding right away: a KPI does not have to be a sales number. In service businesses, the key indicator is sometimes response time to a request, in manufacturing it is the defect rate, and in an agency it is project profitability. The common denominator is always the same: the indicator must be tied to the goal that is genuinely holding the company back at that moment.

If you are looking for broader context on how indicators fit into the whole logic of your activities, see our overview of B2B marketing strategy. An indicator without a goal is just a number in a table.

KPI vs. metric: where measurement ends and a decision begins

A metric is any number that can be measured: sessions on a website, proposals sent, average order value, calls from customers. A KPI is a subset of metrics that has been assigned a goal, an owner, and consequences. The difference lies in how the company uses the number, not in the nature of the number itself.

The same indicator can be a metric in one company and a KPI in another. The number of leads at a company selling simple subscription services is often a supporting metric, because conversion and revenue are what count. At a company selling contracts on a twelve-month cycle, the number of qualified leads can be a key indicator, because without them there is nothing for next year's sales to grow from.

In practice, the easiest way to tell the two apart is with three questions:

• Is anyone named as the owner of this number? If not, it is a metric.
• Is there an established target value and a deadline for reaching it? If not, it is a metric.
• Does exceeding or missing the target trigger some kind of response? If not, it is a metric.

Three "yes" answers mean we are dealing with a key performance indicator. It is worth keeping in mind, because the most common problem is measuring everything without hierarchy, not a lack of measurements. The team looks at twenty numbers, so in practice it looks at none.

The literature notes that marketing and sales decisions are made under uncertainty, and decision models only make sense when they rely on a limited number of relevant variables (Handbook of Marketing Decision Models, 2017). This illustrates why KPIs exist in the first place: not to measure more, but to measure what actually influences a decision.

How to choose KPIs that survive more than a quarter

The simplest tool that works in most companies is the SMART method. We assess each candidate metric from five angles:

1. S for specific. "Improve marketing" is not a metric. "Number of qualified inquiries from manufacturers in the region" is.
2. M for measurable. There must be a data source and a person who extracts it. If data has to be stitched together manually from three spreadsheets, the metric will die within two months.
3. A for achievable. A target set on a whim by management, with no reference to history or the team's capacity, demotivates faster than no target at all.
4. R for relevant. The metric must be tied to a business goal. If you cannot say what will happen to revenue when the metric rises by 20 percent, you are probably measuring something peripheral.
5. T for time-bound. A quarter, half a year, a year. Without a horizon, the metric becomes decoration.

After the SMART filter, you usually end up with three to seven metrics for the whole company and two or three per department. That is a number the team can remember and discuss in a single meeting. If a company has a dozen or so key metrics, it means none of them is truly key.

The second step is assigning an owner. A metric without an owner is a wish, not a KPI. The owner does not have to be a board member, but it must be someone who genuinely influences that number and is accountable for reporting it.

The third step is setting the review rhythm. We check operational metrics weekly or biweekly, and outcome metrics monthly or quarterly. Mixing these rhythms leads to panic: the team reacts to day-to-day fluctuations in a number that only makes sense on a quarterly basis.

For specific metrics in B2B marketing, we recommend our material on which KPIs to choose in B2B marketing. For those who want to browse the full catalog of possible measures, we have also prepared a complete list of marketing metrics.

Common mistakes when choosing KPIs

From the perspective of sixteen years of working with B2B companies, we see several mistakes repeating with astonishing regularity.

Measuring what is easy to measure

Follower count, website visits, number of published posts. This data is available immediately, so it lands in the report first. The problem is that it rarely translates into business decisions. Ease of measurement is not a criterion for choosing a metric.

KPIs without a target

The team has been reporting a metric for two years, but nobody can say what value is good and what value is bad. Without a reference point, the number is meaningless. It is worth setting three thresholds: minimum acceptable, target, and the level that triggers escalation.

Too many metrics at once

Twenty key metrics in practice means no priorities. The team focuses on the ones that are easiest to improve, not the ones that are blocking the result. Limiting to five or seven metrics forces an honest conversation about what really matters.

Metrics that can be improved without changing the result

A classic example: the number of leads grows because the team started collecting contacts from a form without qualification. The metric looks good, sales have not moved. That is why every key metric should be paired with a control metric that catches such phenomena.

No owner and no consequences

A metric that nobody is responsible for comes back to the report quarter after quarter with the same value. That is a signal that it is not a KPI, just a decorative element of the presentation.

Examples of KPIs from different areas of a company

The examples below show what a key performance indicator looks like in practice. The point is to see the level of specificity we expect, not to copy them one to one.

Sales

• Value of signed contracts in the quarter, split between new and existing customers.
• Length of the sales cycle measured from first contact to contract signature.
• Percentage of proposals that move from negotiation to signature.

Marketing

• Number of qualified inbound leads (MQLs passed to sales) per month.
• Cost of acquiring a qualified lead, broken down by channel.
• Share of revenue from customers acquired in a given year in total revenue.

Customer service

• Average time to first response to a ticket during business hours.
• Percentage of tickets resolved on first contact.
• Customer retention rate on an annual basis.

In each of these cases, the metric can be calculated from data the company usually already has. This is an important criterion: if implementing measurement requires a new system and six months of work, it is better to start with something simpler and come back to it later.

It is also worth remembering that KPIs do not work in isolation. A marketing metric with no link to sales quickly becomes an internal game between departments. That is why, when implementing them, it helps to build on a coherent action plan, such as the one described in our approach to B2B marketing strategy, where metrics follow from goals, not the other way around.

Finally, a practical note: key performance indicators need to be reviewed from time to time. The company changes, the goals change, so a set of metrics from 2023 may be useless today. Once a year it is worth asking whether each of them still influences decisions. If not, it drops out of the set.