pipeline: definition
The set of deals in progress across their different sales stages, used to forecast upcoming revenue and spot where things stall.
By Isidore Mikorey-Nilsson · June 5, 2026
Definition
The sales pipeline is the view of all your sales opportunities, broken down by stage (contact, qualification, proposal, negotiation, signature). It serves two purposes: forecasting upcoming revenue by weighting each deal by its probability, and diagnosing bottlenecks by spotting the stage where deals get stuck.
Why it matters
The pipeline turns sales from a black box into a readable system: you see how many deals you need at the top to sign one customer at the bottom, and where they stop. It's what makes revenue predictable and sales effort something you steer rather than endure.
When to use it
You keep it up to date as soon as several deals are running in parallel. In practice, you look at the conversion rate from one stage to the next to identify your bottleneck, then focus effort on that specific stage rather than adding more prospects at the top.
Example
20 prospects in qualification, 8 in proposal, 3 in negotiation: the pipeline shows at a glance what should close and what's stuck.
Common mistakes
- Confusing it with the marketing sales funnel.
- Not keeping it up to date, so forecasts are wrong.
- Stacking prospects at the top without addressing the bottleneck.
Don't confuse it with
- sales funnel: The sales funnel is the marketing model of the journey (visitor, lead, customer); the pipeline is the sales-side view of deals in progress.
Related terms
Articles that use this term
Frequently asked questions
- Pipeline versus sales funnel, what's the difference?
- The funnel describes the marketing journey of an anonymous audience toward a purchase; the pipeline tracks named deals on the sales side. They overlap but aren't the same thing.