Key Recurring Revenue Metrics
ARR (Annual Recurring Revenue)
The total annualized value of all active contracts. The foundation metric for subscription businesses.
MRR (Monthly Recurring Revenue)
ARR ÷ 12. Useful for month-over-month growth tracking and short-term forecasting.
NRR (Net Revenue Retention)
Measures revenue retained from existing customers, including expansion and contraction. An NRR above 100% means you are growing revenue from existing customers without any new sales.
Churn Rate
The percentage of ARR lost to cancellations in a given period. A healthy SaaS churn rate is under 5% annually, but this varies by segment and contract size.
Expansion Revenue
Revenue growth from existing customers through upsells, cross-sells, and seat additions. High-performing subscription businesses derive 30%+ of new ARR from expansion.
Contraction Revenue
Revenue lost from downgrades within existing accounts. Tracking contraction separately from churn helps identify pricing and product fit issues.
How Toolboks Tracks ARR Automatically
In Toolboks, ARR is not a number you calculate — it is a live metric that updates with every contract change. When a new contract is created, ARR increases. When a contract is expanded, the delta is tracked as expansion revenue. When a contract churns, the loss is recorded and attributed.
The Toolboks ARR Health Dashboard gives your team a real-time view of:
- Total ARR with trend lines showing growth trajectory
- ARR breakdown by new, expansion, contraction, and churn
- MRR movement with month-over-month comparison
- Net Revenue Retention calculated automatically from contract data
- Revenue by segment — see ARR by customer size, industry, or region
No spreadsheets. No manual exports. No formula errors. Just live revenue data derived directly from your contracts.
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Why ARR and MRR Visibility Matters
Annual Recurring Revenue (ARR) is the annualized value of your active subscription contracts. It is the single most important metric for any subscription business because it represents your predictable, repeatable revenue base. Monthly Recurring Revenue (MRR) is simply ARR divided by 12.
Yet most subscription teams do not have real-time ARR visibility. They calculate it monthly (or quarterly) in a spreadsheet, pulling data from multiple sources, applying manual adjustments, and hoping the formula is correct. By the time the number is ready, it is already outdated.
Real-time ARR tracking changes how your team operates. Sales leaders can see the impact of a new deal on ARR instantly. Customer success teams can spot revenue contraction as it happens. Finance can forecast with confidence because the data is live, not a month-old snapshot.
Frequently Asked Questions
What is ARR and how do you calculate it?
ARR (Annual Recurring Revenue) is the annualized value of active recurring contracts. Calculate it by summing the yearly value of all active subscriptions, excluding one-time fees and variable/consumption charges. For monthly contracts, multiply MRR × 12.
What is the difference between ARR and MRR?
ARR is the annual view, MRR is the monthly view. ARR = MRR × 12 for pure monthly billing. When you have annual contracts, ARR is the direct sum. Use MRR for short-term trends and ARR for annual planning, fundraising, and valuation.
How does Toolboks track ARR automatically?
Toolboks calculates ARR directly from contract line items. When you create a contract with recurring fees, the system automatically computes ARR. Expansion, contraction, and churn are tracked in real-time waterfall dashboards — no spreadsheets or manual calculation needed.
What is Net Revenue Retention (NRR)?
NRR measures how much revenue you retain from existing customers over time, including expansion and contraction. An NRR above 100% means your existing customers are growing faster than they churn. Formula: (Starting ARR + Expansion − Contraction − Churn) ÷ Starting ARR × 100.