The ARR formula
ARR is MRR annualized, and net new ARR is the movements annualized:
ARR = MRR x 12 net new ARR = (new + expansion - contraction - churn) x 12
The headline ARR is easy. The movements are where the truth is: a company can grow ARR on new logos while quietly bleeding it through churn, and only the net figure shows it. When expansion beats contraction plus churn, your base grows even with zero new customers, which is the definition of net revenue retention above 100 percent. Read what is ARR and MRR vs ARR.