Monthly recurring revenue (MRR) is the total revenue generated monthly by all of a business’s active subscriptions. It is a monthly amount that includes all recurring revenue throughout a given month. MRR does not incorporate all the revenue a company can generate monthly, as there may be revenue from non-recurring sources. Instead, it is the total of the regular monthly payments the company receives. In addition, monthly recurring revenue will include revenue generated from recurring add-ons but not include one-time customizations.