Source: https://www.revvly.ai/glossary/expansion-mrr

[Glossary](https://www.revvly.ai/glossary)

# Expansion MRR

**Expansion MRR is the additional monthly recurring revenue gained from existing customers through upgrades, extra seats, add-ons or higher usage. It is the main way a subscription business grows without acquiring new customers, and it feeds directly into net revenue retention.**

## Formula

`Expansion MRR = sum of positive MRR changes on active subscriptions in the period`

## How to read it

Count usage-driven increases as expansion too, not just plan changes. Book each movement against the period it was earned for, so a month of heavy usage is not reported as growth a cycle later.

## In Revvly

- [Docs: reference metrics](https://www.revvly.ai/docs/reference/metrics)
- [Docs: guides mid cycle changes](https://www.revvly.ai/docs/guides/mid-cycle-changes)

## Further reading

- [Expansion MRR: how to grow revenue without leaning entirely on new-logo acquisition](https://www.revvly.ai/blog/expansion-mrr-growth-without-new-logos)

## Related terms

- [Contraction MRR](https://www.revvly.ai/glossary/contraction-mrr)
- [Net revenue retention (NRR)](https://www.revvly.ai/glossary/nrr)
- [Monthly recurring revenue (MRR)](https://www.revvly.ai/glossary/mrr)

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Orchestrate the flow of revenue.

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