The MRR Calculator supports two methods. ARPA mode multiplies total customers by average revenue per account. Components mode starts with beginning MRR and applies new, expansion, contraction, and churned MRR.
Example
With 100 customers paying 5,000. In components mode, $5,000 beginning MRR plus $800 new and $200 expansion minus $150 contraction and $250 churn produces $5,400` ending MRR.
Questions
Does MRR include one-time fees?
No. MRR should represent recurring revenue only.
Is ARR calculated here?
No. Multiply the resulting MRR by 12 for a simple annualized run rate.
Why use components mode?
It shows how customer movements change recurring revenue rather than requiring only a final customer count.
Limitations
The calculator does not apply revenue-recognition rules, refunds, taxes, discounts, or currency conversion.