What is a sales funnel
Also known as: Marketing funnel, Purchase funnel, sales pipeline
A sales funnel is the model that splits a person's path, from first contact with a company to purchase, into stages. It is called a funnel because many people enter at the top and few reach the end: at every stage, some drop out. Measuring how many move from one stage to the next shows where sales are being lost.
A software company had 10,000 website visits. Of those, 500 downloaded a guide (5%), 100 requested a demo (20% of downloaders), 40 attended the demo and 12 subscribed.
Looking only at the end, 12 customers from 10,000 visits seems low. Looking at the funnel, the problem shows: 60% of those who requested a demo never showed up. A reminder message on the day of the meeting could bring more customers than doubling ad spend.
The stages of the funnel
Names vary from company to company, but the logic is the same. A common split uses three stages, called top, middle and bottom:
| What the person is doing | What the company offers | |
|---|---|---|
| Top | Realizing they have a problem | Content that explains the problem |
| Middle | Comparing solutions | Comparisons, case studies, demos |
| Bottom | Deciding who to buy from | Proposal, price, proof and guarantee |
Where the idea comes from
The funnel descends from an older model, AIDA (attention, interest, desire, action), attributed to American advertiser Elias St. Elmo Lewis in the late 19th century. The core idea is the same: a purchase is a sequence of smaller decisions, and each one can be helped or hindered.
The funnel added measurement: knowing the stages is not enough, you need to know how many people move from one to the next.
How to measure the funnel
The most useful metric is the stage-to-stage rate: how many of those at one stage reached the next. It shows the bottleneck, which is where effort pays off most.
- Visits to leads: the website's conversion rate.
- Leads to opportunities: how many have a real profile and interest.
- Opportunities to proposals: how many get to see a price.
- Proposals to sales: the close rate.
Where the funnel oversimplifies
In real life, nobody moves down the funnel in a straight line. Google research published in 2020, which called this stretch the "messy middle", described people switching between two modes, exploring options and evaluating options, and repeating the cycle as many times as they need before buying, across search engines, social media, aggregators and review sites.
The funnel is still useful for measuring and organizing, as long as nobody expects customers to follow the order of the diagram. The goal, according to the same research, is not to force people out of that loop but to give them the information and reassurance they need to decide.
Common mistakes
- Investing only at the top, bringing traffic, when the bottleneck is in the middle or at the bottom.
- Not recording which stage each contact is in, which makes it impossible to measure progression.
- Treating every lead as ready to buy and calling someone who only downloaded a guide.
- Copying another company's funnel without adapting it to your own sales cycle.
Frequently asked questions
What is a sales funnel?
It is the model that splits the customer's path, from first contact to purchase, into stages. Each stage has fewer people than the one before, hence the funnel shape.
What are the stages of a sales funnel?
A common split is top (the person discovers the problem), middle (compares solutions) and bottom (decides who to buy from). Each company can add detail to fit its own process.
Are a sales funnel and a pipeline the same thing?
They are similar. The funnel usually describes the customer's path as a whole; the pipeline, the opportunities the sales team is negotiating and the stage each one is in.
How do I find where my funnel is failing?
By measuring the stage-to-stage rate. The stage with the biggest drop compared with what you expect is the bottleneck, and that is where to act first.
Does the sales funnel still make sense?
Yes, as a tool for measurement and organization. But real customers go back and forth between researching and comparing before they buy, rather than following the stages in a straight line.
Related terms
Rodrigo Fávaro
Founder of ROO3, a marketing and technology agency in São José do Rio Preto, Brazil. Builds AI products running in production (Tobia, gerar.app, Pense Mercado) and maintains the AI Benchmark, a public ranking of AI models.
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