SaaS LTV Calculator
Calculate customer lifetime value for your SaaS business. Choose from three formulas — simple, margin-adjusted, or DCF — with LTV:CAC ratio analysis and industry benchmarks.
SaaS Metrics
Quick Tips
- Use margin-adjusted LTV for a realistic picture that accounts for cost of delivery.
- Reducing churn by even 1% has a bigger LTV impact than raising ARPU in most cases.
- DCF method is preferred for investor decks and long-term financial modeling.
Customer Lifetime Value
Avg Lifetime
20 mo
Payback
5.1 mo
Annual Rev
$470
LTV:CAC Analysis
All Three Formulas
ARPU ÷ Churn
Simple × Gross Margin
Discounted cash flows @ 10.0%
Retention & LTV Accumulation
| Month | Retained | Cum. LTV |
|---|---|---|
| 0 | 100.0% | $39 |
| 3 | 85.7% | $145 |
| 6 | 73.5% | $237 |
| 9 | 63.0% | $315 |
| 12 | 54.0% | $382 |
| 15 | 46.3% | $439 |
| 18 | 39.7% | $488 |
| 21 | 34.1% | $530 |
| 24 | 29.2% | $567 |
Break-even at month 5 (cumulative LTV exceeds CAC of $200)
Important Note
LTV assumes constant churn and ARPU. Real-world cohorts may have improving retention over time (negative churn) or expansion revenue that increases LTV beyond these estimates.
What Is SaaS LTV (Customer Lifetime Value)?
Customer Lifetime Value (LTV or CLV) in SaaS measures the total gross profit a single customer generates from the moment they subscribe until they cancel. It is the single most important metric for understanding whether your business model works, because it tells you the ceiling on how much you can spend to acquire a customer while remaining profitable.
Unlike one-time purchase businesses, SaaS companies earn revenue over months or years through recurring subscriptions. This makes LTV inherently tied to two factors: how much each customer pays (ARPU) and how long they stay (the inverse of churn rate). Small changes to either factor compound over time — a 1% reduction in monthly churn can increase LTV by 20-50% depending on your baseline.
LTV is most powerful when paired with Customer Acquisition Cost (CAC). The LTV:CAC ratio reveals your unit economics — whether each customer you acquire contributes to profit or drains cash. Investors, boards, and operators all use this ratio as a primary health indicator for SaaS businesses at every stage from seed to IPO.
Three SaaS LTV Formulas Explained
Formula 1: Simple LTV
LTV = ARPU ÷ Monthly Churn Rate
The quickest estimate. If ARPU is $50 and monthly churn is 4%, LTV = $50 ÷ 0.04 = $1,250. Best for back-of-napkin calculations and early-stage businesses that don't yet have reliable margin data.
Formula 2: Margin-Adjusted LTV
LTV = (ARPU ÷ Monthly Churn) × Gross Margin %
More realistic because it subtracts cost of goods sold (hosting, support, infrastructure). If ARPU is $50, churn is 4%, and gross margin is 80%, LTV = ($50 ÷ 0.04) × 0.80 = $1,000. This is the most commonly used formula in SaaS board decks.
Formula 3: DCF-Based LTV
LTV = Σ (Monthly Gross Profit × Survival Rate) ÷ (1 + r)^t
The most sophisticated approach. It discounts future cash flows to present value, acknowledging that a dollar received in 3 years is worth less than a dollar today. Essential for investor presentations, M&A, and capital allocation decisions. The discount rate typically ranges from 8-15% annually for SaaS.
Worked Examples
Example 1: High-Retention B2B SaaS
ARPU = $199/mo, Monthly Churn = 2%, Gross Margin = 85%, CAC = $800. Simple LTV = $199 ÷ 0.02 = $9,950. Margin-Adjusted LTV = $9,950 × 0.85 = $8,458. LTV:CAC = $8,458 ÷ $800 = 10.6:1 — excellent. Payback = $800 ÷ ($199 × 0.85) = 4.7 months. This company can aggressively invest in growth.
Example 2: Consumer SaaS App
ARPU = $12/mo, Monthly Churn = 8%, Gross Margin = 90%, CAC = $25. Simple LTV = $12 ÷ 0.08 = $150. Margin LTV = $150 × 0.90 = $135. LTV:CAC = $135 ÷ $25 = 5.4:1 — healthy. Average lifetime = 12.5 months. Despite low ARPU, the low CAC makes unit economics work. Priority: reduce churn to extend lifetime.
Example 3: Struggling SaaS (Warning Signs)
ARPU = $49/mo, Monthly Churn = 12%, Gross Margin = 70%, CAC = $350. Simple LTV = $49 ÷ 0.12 = $408. Margin LTV = $408 × 0.70 = $286. LTV:CAC = $286 ÷ $350 = 0.8:1 — unsustainable. Average lifetime = 8.3 months. Payback = 10.2 months but customer churns before full payback. Must fix retention before spending more on acquisition.
SaaS LTV Benchmarks by Segment
LTV varies dramatically across SaaS segments. Enterprise SaaS with annual contracts and dedicated account managers will have vastly different metrics than a $9/month consumer app. Use these benchmarks to contextualize your numbers.
| Segment | Monthly Churn | Avg Lifetime | Target LTV:CAC |
|---|---|---|---|
| B2C SaaS | 5 – 8% | 12 – 20 mo | 3:1 – 4:1 |
| B2B SMB SaaS | 3 – 5% | 20 – 33 mo | 3:1 – 5:1 |
| B2B Mid-Market | 1 – 3% | 33 – 100 mo | 4:1 – 7:1 |
| B2B Enterprise | 0.5 – 1.5% | 67 – 200 mo | 5:1 – 10:1 |
| Fintech SaaS | 2 – 4% | 25 – 50 mo | 3:1 – 8:1 |
| Healthtech SaaS | 2 – 4% | 25 – 50 mo | 4:1 – 7:1 |
When to Use This Calculator
- Pricing decisions: Model how ARPU changes affect LTV and whether a price increase is worth potential churn increase.
- Growth budgeting: Set maximum CAC based on your target LTV:CAC ratio (e.g., if target is 3:1 and LTV is $900, max CAC is $300).
- Investor reporting: Use DCF method for board decks and fundraising materials.
- Churn impact analysis: Quantify the revenue impact of retention improvements to justify investment in customer success.
- Segment comparison: Calculate LTV for different customer segments (SMB vs enterprise, monthly vs annual) to prioritize acquisition focus.
How to Improve Your SaaS LTV
Reduce churn with better onboarding
Most churn happens in the first 90 days. Invest in activation flows, in-app guides, and proactive customer success outreach during the critical early period.
Increase ARPU through expansion revenue
Upsells, cross-sells, and usage-based pricing can grow revenue from existing customers. Net revenue retention above 110% means your installed base grows even without new customers.
Shift to annual contracts
Annual plans reduce churn (commitment effect), improve cash flow, and typically increase LTV by 15-30% compared to monthly plans.
Build switching costs
Integrations, data lock-in, team collaboration features, and workflow automation all increase the cost of leaving — reducing voluntary churn.
Improve product-market fit
The most durable way to improve LTV. Track NPS, feature usage, and "very disappointed" survey responses. Products that solve a real pain point retain naturally.
Segment and act on churn signals
Build early warning systems: declining login frequency, support ticket spikes, feature adoption drop-off. Intervene before the customer decides to leave.
Frequently Asked Questions
About This Calculator
Free SaaS customer lifetime value calculator. Compute LTV with simple, margin-adjusted, or DCF formulas. Includes LTV:CAC ratio, payback period, and industry benchmarks.
Frequently Asked Questions
How do I use the SaaS LTV Calculator?
Enter your values in the input fields provided, and the calculator will automatically compute results in real-time. Start with the required fields (marked with labels), then adjust optional parameters to fine-tune your calculation. Results update instantly as you change inputs, allowing you to quickly compare different scenarios. For the most accurate results, use precise figures from official documents rather than rough estimates. If you are unsure about any input, hover over the field label for a brief explanation of what value to enter.
How accurate are the results from the SaaS LTV Calculator?
This calculator uses standard industry formulas and up-to-date 2025 data to provide reliable estimates. Results are most accurate when you input precise, verified figures. Keep in mind that calculators provide estimates based on mathematical models — real-world outcomes may vary due to factors not captured in the inputs, such as market changes, policy updates, or individual circumstances. For high-stakes decisions, use these results as a starting point and consult with a relevant professional (financial advisor, doctor, engineer, etc.) for personalized guidance.
Can I save or share my SaaS LTV Calculator results?
You can bookmark this page or take a screenshot of your results for future reference. To share results with others, copy the page URL — your specific inputs are not stored in the URL for privacy reasons, so the recipient will need to enter their own values. For record-keeping purposes, we recommend noting your inputs and results in a spreadsheet or document. This allows you to track changes over time and compare different scenarios side by side.
What formulas does the SaaS LTV Calculator use?
This calculator uses industry-standard formulas that are widely accepted by professionals in this field. The specific mathematical relationships and constants are based on peer-reviewed research, government guidelines, or established industry practices. Where applicable, we reference the source methodology in the educational content below the calculator. If you need to verify a specific formula for professional or academic purposes, the calculation methodology section provides detailed breakdowns of each step.
Is the SaaS LTV Calculator free to use?
Yes, this calculator is completely free with no registration required. We believe financial and analytical tools should be accessible to everyone. There are no hidden fees, premium features locked behind paywalls, or data collection requirements. You can use the calculator as many times as needed, compare unlimited scenarios, and access all features without creating an account. The tool runs entirely in your browser — your inputs are never sent to our servers or stored anywhere.
Mike is a software engineer with a background in applied mathematics. He develops and maintains SuperCalc's engineering, conversion, and math utility calculators.
- M.S. in Applied Mathematics, MIT
- Former quantitative developer
- 6 years building computational tools