Glossary entry
Expansion revenue
Also known as Upsell + cross-sell + seat expansion
Revenue from existing customers above their original contract — additional seats, new modules, higher tiers. The cheapest revenue a SaaS company can earn: CAC for expansion is ~20% of new-logo CAC. Top-quartile SaaS companies generate 25-40% of new ARR from expansion (drives NRR above 120%). Operationalized through CSM motions + dedicated 'expansion AE' roles at scale.
01Definition
TLDR
Revenue from existing customers above their original contract — additional seats, new modules, higher tiers. The cheapest revenue a SaaS company can earn: CAC for expansion is ~20% of new-logo CAC. Top-quartile SaaS companies generate 25-40% of new ARR from expansion (drives NRR above 120%). Operationalized through CSM motions + dedicated 'expansion AE' roles at scale.
02Why it matters
The fastest path to capital-efficient growth. Investors weight expansion ARR more than new-logo ARR per dollar.
03Example
Worked example
Customer at $50K ACV adds 20 seats = +$25K expansion. Combined: $75K ACV. Took 10% of new-logo cost to land.
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