A slipped deal is an open opportunity whose close date moved into a later period. A lost deal is closed at zero revenue and exits the pipeline. Both outcomes miss the current number. Only the slip keeps consuming rep hours, coverage, and forecast credibility in the period that follows.
The recording difference drives the behavior
Slipping a deal changes one field. The amount and the stage usually stay where they were, so the full value rolls into next quarter's pipeline coverage. Marking a deal lost requires a loss reason, a conversation with a manager, and a permanent record against the rep's created pipeline. One is free and the other is expensive, so reps push dates. That asymmetry is why slipped deals accumulate while loss reasons stay thin and generic.
How to tell which one you are looking at
ORM's data points to the close-date change as the single best slippage signal, and the earliest warning is the absence of a signal at all. No replies, no meetings booked, no changes to stage or amount. A deal that has moved its date twice with nothing new from the buyer is a loss that has not been written down yet.
Two questions separate the cases. First, did the buyer commit to the new date, or did the rep pick it? Second, has anything changed on the deal since the last push, meaning stage, amount, or a new stakeholder. A slip with a buyer-supplied date and fresh evidence is a real timing change. A slip with neither is a no decision waiting to be recorded.
Why the distinction changes the forecast
Treating slips as future revenue inflates next period's starting position. The quarter opens carrying deals that already failed once, and the coverage ratio hides that history because the amount field never moved. Teams that separate the two get a cleaner read on forecast accuracy and a truer picture of win rate, because deals that will never close stop masquerading as pipeline.
The operational fix is to make losing cheap. Give reps a fast disqualification path with a real loss-reason taxonomy, and stop treating a removed deal as a personal failure. A pipeline that loses deals quickly forecasts better than one that pushes them forward indefinitely.
Frequently Asked Questions
Is a slipped deal the same as a lost deal?
No. A slipped deal is still open and still counts toward future pipeline. A lost deal is closed with a loss reason and removed from coverage. Both miss the current period, but only the slip carries forward into the next one.
When should a slipped deal be marked lost instead?
Mark it lost when the buyer has stopped responding, the deal has passed the normal close window for its deal group, or the close date has moved for a third time without a new commitment from the buyer.
Do slipped deals close later?
Some do, but at a lower rate. ORM's data shows a deal that slips from one quarter into the next is less likely to close, even when the rep still has it in commit.
How does slippage distort next quarter's forecast?
Slipped value reopens the next quarter at full amount and full stage, so coverage looks healthier than the underlying evidence supports. The failed deals get counted twice, once in each period.
Put these metrics to work
ORM builds custom revenue forecast models that turn concepts like slipped deal vs lost deal into prescriptive action for your team.
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