Expansion Revenue
Also known as: Expansion MRR · Upsell Revenue
Additional revenue from existing customers through upgrades, add-ons, seat growth, or usage.
In depth
Expansion is the cheapest revenue in SaaS — the customer is already acquired, onboarded, and trusting you. Every dollar of expansion has near-zero CAC.
Common expansion patterns: seat-based (teams grow), usage-based (usage crosses a limit), feature upgrades (unlock a higher tier), add-ons (modular products). Building expansion into the pricing model from day one is far easier than retrofitting.
Put it into practice
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Last reviewed 14 April 2026 by Abhi Verma.