Cross-Sell Opportunity Estimator
Size the expansion revenue hiding in your current customer base.
There's roughly $631,800 of expansion ARR sitting in your existing base, cheaper to win than any new logo. A targeted cross-sell play against the 585 single-product accounts is usually the highest-ROI pipeline you have.
Expansion converts best when tied to usage signals, prioritise accounts already bumping the limits of their first product.
About this calculator
Expansion revenue is cheaper to win than new logos, the customer already trusts you and is already paying, yet most single-product accounts never get a structured cross-sell motion pointed at them. This calculator sizes exactly how much ARR is sitting in your existing single-product base, both what a realistic attach rate would produce and the full theoretical ceiling.
How to use it
- Enter active customers and the share currently on a single product, customers who haven't yet adopted a second one.
- Enter your expected attach rate, the share of that eligible group you realistically expect to convert to a second product.
- Enter cross-sell ACV, the annual value a second-product sale represents.
- Read eligible customers, expected conversions, expected new ARR, and the full theoretical upside if every eligible customer attached.
Methodology
Eligible customers is active customers × single-product share, the addressable base for a cross-sell motion. Expected conversions is eligible customers × attach rate.
Expected new ARR is expected conversions × cross-sell ACV, the realistic revenue outcome at your stated attach rate. Full theoretical upside is eligible customers × cross-sell ACV, the ceiling if every single-product account converted, useful as a reference point rather than a target.
This model treats the eligible base as uniformly likely to convert at the stated attach rate, it doesn't segment by usage intensity, account size, or other signals that typically predict which accounts are actually ready to expand.
In practice, expansion converts best when tied to usage signals, accounts already bumping against the limits of their first product are meaningfully more likely to attach a second one than an average account in the eligible pool, so a targeted list built from usage data will likely outperform the blended attach rate this calculator assumes.
FAQ
It depends heavily on how naturally the second product complements the first and how proactively you're running the motion. A structured, usage-signal-driven cross-sell play with dedicated outreach typically outperforms a passive "it's available if they ask" approach by a wide margin, use your own historical attach data if you have it rather than a generic benchmark.
No, the full theoretical upside figure assumes uniform conversion, but in practice accounts showing usage-limit signals on their current product convert at meaningfully higher rates. Segment the eligible base by usage intensity before running outreach rather than treating every single-product account as equally ready.
This tool sizes new expansion opportunity, revenue from adding a product a customer doesn't yet have. The Renewals Pipeline Health Grader instead assesses churn risk on revenue you already have, a separate question about protecting existing ARR rather than growing it.