Glossary · SaaS metrics
What is expansion revenue?
Expansion revenue is additional recurring revenue earned from existing customers — through plan upgrades, extra seats, add-ons or higher usage — as opposed to revenue from new customers.
Also called: Expansion MRR, Upsell revenue
Updated
How is expansion revenue calculated?
Expansion MRR = Σ (new MRR − previous MRR) for customers whose MRR increased Expansion rate = expansion MRR ÷ starting MRR × 100
Count only increases from customers who were already paying at the start of the period. Reactivations of churned customers are usually tracked separately.
Expansion revenue example
This month 18 customers moved from a 100k-events tier at $19 to a 250k tier at $29 (+$180), and 4 moved from $29 to $59 (+$120). Expansion MRR = $300 on a starting MRR of $10,000: a 3% monthly expansion rate. With 2% churned MRR, net retention for the month is positive.
Why expansion revenue matters
Expansion is usually the cheapest revenue a SaaS can earn — no acquisition cost — and it's what pushes net revenue retention above 100%. Usage- and seat-based pricing create expansion automatically as customers succeed.
Levers and pitfalls
- Value metrics. Price on something that grows with customer success (events, seats, projects).
- Clear upgrade moments. Show customers when they're approaching a limit, before the limit hurts.
- Don't punish growth. Paused features or surprise overages at a limit convert expansion into churn.
- Watch concentration. Expansion from a handful of accounts is fragile.
Expansion revenue and VisitTrack
VisitTrack's own pricing is event-based, with every feature on every plan, so customers expand by moving to a higher event tier as their traffic grows — and crossing a tier never pauses tracking or samples data. For your own product, VisitTrack records each attributed payment with its amount, so upgrade payments appear on the paying visitor's profile alongside the channel that originally brought them. See revenue attribution.
Frequently asked questions
What counts as expansion revenue?
Increases in recurring revenue from existing customers: plan upgrades, additional seats or licenses, paid add-ons and higher committed usage. New customers and one-time fees don't count.
How does expansion revenue affect NRR?
It's added to the numerator of net revenue retention, so strong expansion can push NRR above 100% even when some customers churn.
Related terms
- Net revenue retention (NRR)Net revenue retention (NRR) is the percentage of recurring revenue a business keeps from an existing group of customers over a period, after adding expansion and subtracting downgrades and churn, excluding new customers.
- Monthly recurring revenue (MRR)Monthly recurring revenue (MRR) is the predictable subscription revenue a business expects to earn every month, normalized to a monthly amount and excluding one-time payments.
- Average revenue per user (ARPU)Average revenue per user (ARPU) is the average amount of revenue a business earns per user or account over a period, usually per month — calculated as revenue divided by the number of users.
- Churn rateChurn rate is the percentage of customers (or recurring revenue) that a business loses during a period, out of the customers (or revenue) it had at the start of that period.
- Customer lifetime value (LTV)Customer lifetime value (LTV or CLV) is the total revenue — or, more usefully, gross profit — a business can expect from a single customer over the whole time they remain a customer.
Tools and guides
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