ARR Calculator
Estimate your current Annual Recurring Revenue (ARR), projected ARR after churn and expansion, and how many new customers you need to hit your ARR goal.
Tip: ARR is typically calculated using only recurring subscription revenue and excludes one-time fees.
What is annual recurring revenue (ARR)?
Annual Recurring Revenue is the value of predictable subscription revenue your business expects over a 12-month period. ARR is one of the most important SaaS metrics because it helps you understand growth, retention quality, and how stable your revenue base really is.
If your pricing model is monthly, ARR is usually derived from MRR (Monthly Recurring Revenue). If you sell annual contracts, ARR can be summed from those contract values directly.
ARR formula
- From monthly plans: ARR = MRR × 12
- From customer-level data: ARR = Number of Customers × Average Monthly Revenue per Customer × 12
- Projected ARR: Current ARR − Churned ARR + Expansion ARR
How to use this ARR calculator
This calculator is designed for quick planning and decision support. Fill in your current customer count and average monthly revenue, then layer in churn, expansion, and your ARR goal.
- Active customers: Current paying customers generating recurring revenue.
- Average monthly revenue per customer: Your blended ARPU/ARPA.
- Annual churn rate: Percent of ARR expected to be lost over one year.
- Annual expansion rate: Percent ARR expected from upgrades, add-ons, seat growth, or price increases.
- Target ARR: The annual recurring revenue milestone you want to reach.
Why this matters: Two businesses with the same ARR can have very different health profiles. The one with lower churn and stronger expansion usually has more durable growth and better long-term valuation potential.
Example ARR scenario
Baseline
Suppose you have 120 active customers and each pays an average of $85/month. Your ARR is:
120 × $85 × 12 = $122,400
After churn and expansion
If annual churn is 8% and expansion is 12%, you lose some ARR and gain some ARR from your existing base. The calculator estimates:
- Churned ARR: 8% of current ARR
- Expansion ARR: 12% of current ARR
- Projected ARR: Current ARR − Churned ARR + Expansion ARR
This gives you a realistic view of how much new business you still need to close to hit your target.
ARR vs. related metrics
- MRR: Monthly recurring revenue; useful for short-cycle operational tracking.
- ARR: Annualized recurring revenue; useful for strategic planning and board reporting.
- Bookings: Signed contract value; may include non-recurring amounts and future periods.
- Recognized revenue: Revenue recognized under accounting rules over time, which may differ from ARR.
How to improve ARR over time
1) Reduce churn first
Retention is often the fastest path to ARR improvement. Even small churn reductions can outperform new logo acquisition in terms of long-term impact.
- Improve onboarding and time-to-value.
- Address common cancellation reasons with product and support fixes.
- Use proactive customer success for high-risk accounts.
2) Increase expansion revenue
Expansion ARR comes from existing customers growing with your product.
- Introduce usage-based tiers or seat-based growth paths.
- Create add-ons that solve adjacent customer problems.
- Review pricing to ensure value capture remains aligned.
3) Improve acquisition efficiency
Once retention is healthy, increasing top-of-funnel conversion can accelerate ARR without sacrificing quality.
- Focus on ideal customer profiles with strong retention history.
- Shorten sales cycles with better qualification and proof points.
- Track payback period and LTV:CAC alongside ARR growth.
Common ARR calculation mistakes
- Including one-time setup fees in ARR.
- Ignoring downgrades while only counting upgrades.
- Using logo churn instead of revenue churn for financial planning.
- Annualizing unstable trial or promotional pricing without adjustments.
- Comparing ARR across periods without normalizing pricing changes.
Frequently asked questions
Should one-time implementation fees be included in ARR?
No. ARR should only include recurring subscription revenue.
Is ARR useful for non-SaaS businesses?
Yes, if the business has recurring contracts or subscription-like revenue streams. If revenue is mostly transactional, ARR is less informative.
How often should ARR be reviewed?
Most teams review ARR monthly, with deeper cohort and retention analysis quarterly.
Final takeaway
A strong ARR number is good. A strong ARR number with healthy churn and expansion dynamics is much better. Use this calculator to estimate current performance, model future outcomes, and prioritize the levers that drive durable recurring revenue growth.