Cost per closed won deal divides total sales and marketing spend by the count of deals won in the same period. Ratio metrics like sales efficiency express GTM performance in dollars of ARR per dollar of spend. This one restates the same spend in units a sales leader manages directly, which makes it easier to test against deal size.
The calculation
``` Cost Per Closed Won Deal = Total Sales and Marketing Spend / Deals Closed Won ```
Both sides cover the same period. If your cycle runs longer than a quarter, lag the spend so the cost that produced the wins is the cost you divide by.
Worked example
| Input | Value |
|---|---|
| Sales and marketing spend | $2.4M |
| Deals closed won | 60 |
| Cost per closed won deal | $40,000 |
| Average deal size closed won | $48,000 |
The number that breaks the math
The denominator in most planning models is a forecast of wins, and forecast win counts skew high. ORM sees pipeline where average deal size in the CRM runs far above the average size of deals that actually close won, for example $80,000 in pipeline against $40,000 at signature. A plan built on CRM deal size understates cost per win by the same factor.
Two related patterns push the same direction. Roughly 20% of the pipeline that carries in-quarter close dates on day one of the quarter closes in that quarter, so counting the rest as wins inflates the denominator. And ORM sees 10% or more of pipeline sitting untouched for twelve months, which contributes nothing to the win count while the spend behind it already cleared.
Where the lever actually sits
Cost per win has two inputs and only one of them is safe to attack.
Win rate. Raising the share of worked deals that close reduces cost per win without removing pipeline. This is why loss reason discipline and earlier disqualification pay back faster than budget cuts. Spend. Cutting spend improves the ratio this period and starves the next one. The wins you would have closed two quarters out disappear with the pipeline that funded them.Track cost per win alongside win rate and deal slippage. A rising cost per win with flat win rate means deals are pushing, not failing, and the fix is close date discipline rather than a comp change. When close dates keep moving, the cost accrues in the period you paid it while the win lands in a later one.
Frequently Asked Questions
How is cost per closed won deal different from CAC?
Customer acquisition cost is measured per new customer and normally excludes expansion deals sold into existing accounts. Cost per closed won deal counts every won opportunity, including upsells and cross-sells. In a business with heavy expansion, cost per deal runs well below CAC, and the gap between them is a useful read on how much of the motion is land versus expand.
Should losses be included in the calculation?
The cost of losing is already in the numerator, because the spend that funded lost deals sits in the same period total. That is the point of the metric. Dividing by wins only means every loss raises the cost of the deals you did win, which is the honest accounting.
What is the fastest way to lower cost per closed won deal?
Raise win rate on deals already in flight rather than cutting spend. Spend cuts remove the pipeline that produces future wins, so the ratio improves for a quarter and then degrades. Disqualifying earlier and reducing the share of no-decision outcomes lowers the cost per win without touching the budget.
Put these metrics to work
ORM builds custom revenue forecast models that turn concepts like cost per closed won deal into prescriptive action for your team.
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