Partner attach rate is the percentage of closed deals that involve a channel partner in some capacity. It measures how frequently partners are participating in the sales motion, whether by sourcing opportunities, providing implementation services, or influencing the buying decision.
The calculation is straightforward: divide the number of deals with partner involvement by the total number of deals closed in a period. A company that closes 100 deals and 35 involve a partner has a 35 percent partner attach rate.
Partner attach rate is a leading indicator of ecosystem maturity. Early-stage partner programs see attach rates below 10 percent. Mature programs with strong co-selling motions achieve 40 to 60 percent. Companies with deeply embedded ecosystems (like Salesforce) can exceed 70 percent.
High attach rates correlate with several positive business outcomes. Partner-attached deals typically close faster, have larger contract values, and show higher retention rates than unattached deals. This makes sense: when a partner is involved, the customer gets implementation support, and the product is more deeply integrated into their workflow.
Improving attach rate requires making it easy for sales reps to involve partners. This means building partner referral into the sales process, training reps on when and how to engage partners, and compensating reps fully on partner-attached deals. If reps lose commission when a partner is involved, they will avoid partner engagement.