# What is MRR? Definition & Technical Mechanics

> **Source:** [SPIDITS AI Startup & Venture Intelligence Glossary](https://spidits.com/startup-glossary)  
> **Category:** Metrics  
> **Canonical Citation:** [https://spidits.com/startup-glossary/mrr](https://spidits.com/startup-glossary/mrr)

## Definition
MRR (Monthly Recurring Revenue) is the total amount of predictable subscription revenue a startup expects to receive each month.

## Architectural Mechanics & Deep Dive
MRR (Monthly Recurring Revenue) is the total amount of predictable subscription revenue a startup expects to receive each month. It is the foundational metric for SaaS startups, enabling founders to track growth trends, forecast cash flows, and analyze customer churn. MRR excludes one-off fees, professional services, or hardware sales to isolate true recurring subscription value.

## Industry Applications & Real-World Use Cases
Monthly performance reports and subscription analytics

## Frequently Asked Questions

### Why is MRR important for SaaS?
It provides a reliable baseline of incoming cash flows, making it easier to manage burn rate, runway, and operating budgets.

### What is churn MRR?
The MRR lost from customers cancelling their subscriptions during the month.

## Related Terminology
- [arr](https://spidits.com/startup-glossary/arr)
- [runway](https://spidits.com/startup-glossary/runway)
- [burn-rate](https://spidits.com/startup-glossary/burn-rate)

---
*From the SPIDITS AI Knowledge Base (300+ terms indexed). Explore full technical definitions: [https://spidits.com/startup-glossary](https://spidits.com/startup-glossary)*