MRR vs. ARR: Formulas, Examples, and When to Use Each

Monthly recurring revenue (MRR) and annual recurring revenue (ARR) summarize the recurring subscription value of a business over different time horizons. A common shortcut is ARR = MRR × 12, but the calculation is only meaningful when the underlying recurring revenue is defined consistently.

Calculate MRR from recurring subscriptions

MRR is the normalized monthly value of active recurring subscriptions at a stated point or period. A simple account-level method sums each active subscription’s monthly recurring amount, converting annual or other billing terms to a monthly equivalent when the business’s policy allows.

For example, 40 customers paying $500 per month contribute $20,000 MRR. A customer billed $6,000 annually may contribute $500 monthly recurring value, even though the cash arrives once a year. One-time setup fees and uncommitted services are usually excluded from recurring revenue.

Calculate ARR with a consistent basis

ARR expresses recurring subscription value on an annualized basis. A business may calculate it as monthly recurring revenue multiplied by 12 or sum normalized annual recurring contract values. These approaches should reconcile when contract scope and recognition rules are consistent.

ARR is not the same as recognized revenue, bookings, billings, or cash collected. A new multi-year contract may create bookings that exceed one year of recurring value; annual prepayment can create cash receipt without changing the contract’s monthly recurring amount.

Choose the metric for the question

MRR is useful for frequent operating reviews, especially when subscription changes happen monthly. ARR can make scale and annualized recurring value easier to compare across SaaS companies. Neither metric alone explains growth quality, churn, discounts, margin, or customer concentration.

Use MRR for monthly movement analysis and ARR for an annualized view, while labeling dates and definitions. If a company has substantial usage-based or seasonal revenue, state how it is normalized and consider reporting the underlying components separately.

Build a movement bridge

A useful recurring-revenue bridge separates new customers, expansion, contraction, and churn. Reconcile the opening balance plus those movements to the closing balance, then annualize only after confirming that each movement uses the same rules for eligibility and currency.

The formulas are simple; consistency is the hard part. Document what counts as recurring, which contracts are active, how discounts and pauses are handled, and whether the view is gross or net of customer changes.