What is Net Revenue Retention (NRR)?

Why It Matters

NRR isolates how healthy the existing customer base is, completely separate from new sales, which matters because a business can look like it's growing overall while its core account base is quietly shrinking underneath new customer acquisition. An NRR above 100% is a strong signal that a company doesn't depend entirely on signing new logos to grow, since expansion from existing accounts alone is outpacing downgrades and churn. Investors and boards weight NRR heavily for exactly this reason, since it points to durable, compounding growth rather than growth that has to be constantly refueled with new customer spend. Ignoring NRR in favor of watching total MRR alone can hide a churn problem for months, since new business can mask existing-customer losses in the blended total. Because NRR combines expansion, downgrades, and churn into one figure, tracking those three components separately underneath it is what tells a team exactly which lever to pull to move the number.

Example

A company starts the quarter with $1,000,000 in MRR from existing customers, gains $150,000 from upgrades, loses $30,000 to downgrades, and $70,000 to cancellations. NRR is $1,000,000 plus $150,000, minus $30,000, minus $70,000, divided by $1,000,000, times 100, which equals 105%. Public SaaS companies with NRR consistently above 110% are typically viewed very favorably by investors, since it means the business could theoretically stop signing new customers entirely and still grow revenue from the accounts it already has.

Frequently Asked Questions

• What's the difference between NRR and gross revenue retention?

  Gross revenue retention only accounts for downgrades and churn, capping out at 100% since it excludes any upside from expansion. NRR includes expansion revenue too, which is why NRR can exceed 100% while gross revenue retention never can.

• Does NRR include revenue from new customers?

  No, NRR is deliberately scoped to only the customers who were already paying at the start of the period. New customer revenue is tracked as a separate metric, since mixing the two would hide how the existing base is performing on its own.

• What's considered a good NRR?

  Anything above 100% means the existing customer base is growing revenue on its own, and NRR consistently above 110% is generally viewed very favorably, especially among public and venture-backed SaaS companies. Below 100% signals that expansion isn't fully offsetting downgrades and churn.

• How often is NRR typically calculated?

  Most SaaS companies calculate NRR quarterly or annually, since it needs a full period of MRR movement, including expansion, downgrades, and churn, to be meaningful. Calculating it over too short a window can make the number noisy and less useful for spotting real trends.

• What causes NRR to fall below 100%?

  NRR drops below 100% when churned and downgrade MRR outweigh the expansion MRR gained from existing customers in the same period. That usually points to either a retention problem, an upsell motion that isn't working, or both happening at once.