Reactivation MRR Calculator

Reactivation MRR is the monthly recurring revenue you recover when former customers come back and start paying again, and it is an often overlooked source of growth that sits alongside new and expansion MRR. This calculator turns two simple inputs into that figure: the number of reactivated customers who returned in the period and your average revenue per account, often called ARPA. It multiplies the two to give your reactivation MRR, then annualises it by twelve so you can see the run rate those returning customers add over a full year. Founders, marketers and customer success teams track reactivation MRR because winning back a lapsed customer is usually cheaper than acquiring a brand new one, and a steady stream of reactivations is a strong sign that your win back campaigns and product improvements are landing. Reporting it separately also keeps your MRR movements clean, since reactivated revenue is neither brand new nor expansion from an active account. A few good practice tips help you use the figure well. First, count only customers who had genuinely churned and then returned, not those who simply paused billing, so the metric stays honest. Second, use a blended ARPA that reflects the plans returning customers actually choose, which may differ from your overall average. Third, pair reactivation MRR with the cost of your win back efforts, because recovering revenue cheaply is what makes the channel worthwhile. Tracked consistently each month, reactivation MRR shows whether your re-engagement work is paying off and feeds straight into your net new MRR and net new ARR reporting, giving you a complete view of every way recurring revenue enters your business.

Reactivation MRR = reactivated customers x ARPA. Annualised = MRR x 12. Estimate only, not financial or tax advice.