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Customer Lifetime Value Calculator (LTV) — Retail & SaaS (2025)

Calculate Customer Lifetime Value (LTV) for retail and SaaS. Estimate gross profit, factor in churn, and find your CAC payback period with our LTV models.

Customer Lifetime Value Calculator (LTV) — Retail & SaaS (2025)

Enter your details below to calculate

Configuration

Optional: Enter to calculate LTV:CAC ratio and payback period.

Retail Logic: Calculates value based on repeat purchases over a fixed lifespan.
LTV = AOV × Frequency × Lifespan × Margin

Customer Lifetime Value

Discounted PV
$2,598
Undiscounted LTV: $3,024
Gross Profit / Month
$84
Avg Lifespan
36.0 mo

Unit Economics (LTV:CAC)

Exceptional (≥ 5:1)
LTV:CAC Ratio
6.0x
Payback Period
6.0 mo

Profitability Timeline

Shows cumulative gross profit over time. The intersection with CAC is your break-even point.

How to Use This Calculator

1

Select Your Business Model

Choose "Simple" for retail/e-commerce (transaction-based) or "Subscription" for SaaS/memberships (recurring revenue).

2

Input Revenue Metrics

Enter your Average Order Value (AOV) and Purchase Frequency for retail, or Monthly Revenue (ARPU) for subscription models.

3

Define Retention & Margin

Set the Gross Margin % (revenue minus COGS) and either expected Lifespan (Retail) or Monthly Churn Rate (SaaS).

4

Analyze Unit Economics

Optionally enter your Customer Acquisition Cost (CAC) to instantly see your LTV:CAC ratio and break-even timeline on the chart.

Key Features

Dual Mode: Specialized models for Retail/E-commerce and Subscription/SaaS

Profit-Focused: Calculates LTV based on Gross Margin, not just Revenue

Advanced PV: Applies discount rates to show the Present Value of future cash flows

Unit Economics: Instantly calculates LTV:CAC ratio and Payback Period

Visual Timeline: Interactive chart showing cumulative profit vs. acquisition cost

Mastering Customer Lifetime Value (LTV) in 2025

Interface of the LTV calculator showing inputs for average order value, purchase frequency, and churn rate to determine customer profitability.

In the data-driven landscape of 2025 business, Customer Lifetime Value (CLV or LTV) is the single most important metric for sustainable growth. It answers the fundamental question: How much is one customer worth to your bottom line?

Knowing your LTV isn't just about accounting—it's the strategic compass that dictates how much you can afford to spend on marketing (CAC), which customer segments to prioritize, and how to price your products. Whether you run a high-frequency e-commerce store or a sticky B2B SaaS platform, optimizing LTV is the difference between burning cash and building a profitability engine.

Why it matters now: With ad costs on platforms like Google and Meta rising year-over-year, the "growth at all costs" era is over. Investors and founders now prioritize unit economics. A healthy LTV:CAC ratio (typically 3:1 or higher) proves that your business model works.

Choosing the Right LTV Model

Not all businesses are the same. Our calculator provides two distinct models to match your revenue structure:

1. Retail / E-commerce

Best for businesses with discrete, irregular purchases (e.g., fashion, electronics, coffee shops).

LTV = AOV × Frequency × Lifespan × Margin

2. Subscription / SaaS

Best for recurring revenue models (e.g., software, gym memberships, box subscriptions).

LTV = (ARPU × Margin) / Churn Rate

Decoding the Variables

AOV
Average Order Value

The average amount a customer spends in a single transaction. Increasing AOV via bundles or upsells is often the fastest way to boost LTV.

GP
Gross Margin

Crucial but often ignored. LTV must be calculated on gross profit, not revenue. If you sell a $100 item but it costs $60 to make and ship, your LTV calculation bases itself on the $40 profit. See Gross Margin Calc.

Churn
Churn Rate

The percentage of subscribers who cancel each month. Churn is the "leaky bucket" of SaaS. Reducing churn from 5% to 2.5% literally doubles your LTV.

PV
Discount Rate (Present Value)

Money today is worth more than money in 3 years. Our calculator applies a discount rate (default 8-10%) to future cash flows to give you the "Present Value" LTV—a more conservative and accurate figure for financial planning.

Real-World Scenarios

Scenario A: The Boutique Coffee Roaster (Retail)

A customer buys a $20 bag of coffee (AOV) every 3 weeks (~17 times/year). They stay loyal for 3 years. The margin is 60%.
Math: $20 × 17 × 3 × 0.60 = $612 LTV.
Insight: Knowing this, the roaster can comfortably spend $50 to acquire a new customer (CAC), achieving a massive 12:1 return (ROI). Learn more about LTV on Shopify's Blog.

Scenario B: The Project Management Tool (SaaS)

Users pay $50/month (ARPU). Margin is high at 90% ($45 profit). However, churn is high at 10% per month.
Math: $45 / 0.10 = $450 LTV.
Insight: If they reduce churn to 5%, LTV jumps to $900. This shows why retention teams are often more valuable than sales teams in SaaS.

Expert Tips for Maximizing LTV

1. Segment Your Customers: "Average" LTV lies. Your "Whales" might have an LTV of $5,000 while "Minnows" are $50. Calculate LTV by segment to know who to target.

2. Focus on the First 90 Days: Churn often happens early. Improving onboarding and "time to value" is the highest-leverage way to extend lifespan and boost LTV.

3. Cross-Sell Strategically: Don\'t just sell more of the same. Sell complementary products. If you sell running shoes, selling socks adds pure margin and increases AOV without increasing acquisition cost.

4. Monitor Payback Period: High LTV is great, but cash flow is king. If it takes 18 months to recover your CAC, you might run out of cash before you see the profit. Aim for a payback period under 12 months.

Common Calculation Pitfalls

  • Using Revenue instead of Profit: This is the #1 mistake. If you ignore COGS, you will overspend on ads and lose money on every sale.
  • Ignoring Discounts: If you offer 20% off to acquire a customer, that reduces their LTV. Factor in your average discount rate.
  • Assuming Infinite Lifespan: In subscription models, 1/Churn implies mathematically infinite tails. In reality, products become obsolete. Cap your LTV calculations at 3-5 years to be conservative.

LTV Benchmarks: How Do You Compare?

"Is my LTV good?" is a relative question. An LTV of $50 is a disaster for a car dealership but a miracle for a mobile game. Below are 2025 industry standards for average Customer Lifetime Value.

IndustryAverage LTVGood LTV:CAC
E-commerce (Fashion)$150 - $2503:1
B2B SaaS (SMB)$3,000 - $10,0004:1
B2B SaaS (Enterprise)$50,000+5:1
Subscription Box$250 - $4003:1
Mobile Apps$0.50 - $2.002:1

The Holy Grail: LTV to CAC Ratio

Calculating LTV in isolation is useless. Its true power comes when you compare it to your Customer Acquisition Cost (CAC).

Ratio < 1:1

The Death Spiral. You are losing money on every customer. Stop scaling immediately and fix your product or pricing.

Ratio 3:1

The Sweet Spot. This is the industry standard for a healthy business. You have enough margin for overhead and R&D.

Ratio 5:1+

Too Conservative? While profitable, you might be under-spending on growth. Competitors could out-bid you for market share.

Frequently Asked Questions (FAQ)

What is a good LTV retention rate?

For SaaS, a monthly retention rate of 95% (5% churn) is considered good for SMBs, while enterprise should aim for 98-99%. For e-commerce, a 25-30% repeat purchase rate is a strong benchmark. High retention directly correlates to exponential LTV growth.

Should I include overhead in LTV?

Generally, no. LTV should include COGS (Cost of Goods Sold) to get to Gross Margin LTV, but should typically exclude fixed operating costs like rent or R&D salaries. This keeps the metric focused on unit economics.

How do discounting and refunds affect LTV?

They lower it significantly. Always subtract refunds and returns from your gross revenue before calculating LTV. If you have a high return rate (e.g., in fashion), your "Gross" LTV will be dangerously misleading.

What is "Predictive LTV" vs. "Historical LTV"?

Historical LTV looks at what past customers actually spent. Predictive LTV uses machine learning algorithms to guess what new customers will spend based on early signals. Predictive models are powerful but prone to error; historical data is accurate but backward-looking.

Can LTV be infinite?

Mathematically, if churn is 0%, LTV is infinite. However, in the real world, no one stays forever. Most financial models cap the customer lifespan at 3 to 5 years to keep valuations realistic and account for market disruption.

5 Proven Strategies to Increase LTV

1

Implement a Loyalty Program

Reward repeat purchases with points or exclusive access. Sephora's Beauty Insider is a classic example of how gamification locks customers in for years.

2

Switch to Subscription

Can your product be auto-shipped? Amazon "Subscribe & Save" increases LTV by removing the friction of re-ordering. Even 5% off for a subscription beats a one-time full-price sale.

3

Improve Customer Support

Bad support kills LTV. 80% of customers will churn after one bad experience. Fast, empathetic support turns angry users into loyal advocates.

4

Raise Prices (Sensibly)

If you haven't raised prices in 2 years, you are leaving LTV on the table. A 10% price increase often flows 100% to the bottom line profit.

5

Personalized Email Marketing

Don't blast everyone. Send "Time to Restock" emails based on their specific usage patterns. Relevance drives conversion.

Note: This calculator uses standard financial modeling formulas. For specific business valuations or investment decisions, consult a financial professional.

About the Author

Jurica Šinko

Finance Expert, CPA, MBA with 15+ years in corporate finance and investment management

Connect with Jurica

Frequently Asked Questions

What is the difference between LTV and CLV?

There is no difference; they are interchangeable terms. LTV stands for "Lifetime Value," while CLV stands for "Customer Lifetime Value." Both refer to the total gross profit a customer generates over their entire relationship with your business.

Why should I calculate LTV on gross margin instead of revenue?

Calculating LTV on revenue is a dangerous vanity metric. If your product costs $50 to make and you sell it for $100, your true value is $50, not $100. Using revenue will inflate your LTV, leading you to overspend on ads (CAC) and potentially lose money on every new customer.

What is a "good" LTV:CAC ratio for a SaaS business?

The industry standard benchmark for a healthy SaaS business is 3:1—meaning for every $1 you spend on marketing, you get $3 back in gross profit. A ratio of 4:1 or 5:1 is exceptional. Anything below 1:1 means you are losing money on every customer acquired.

How do I estimate Customer Lifespan if my business is new?

If you lack historical data, use conservative industry averages. For e-commerce, 1-3 years is common. For SaaS, you can estimate lifespan as 1 / Churn Rate. If you have 5% monthly churn, estimated lifespan is 1 / 0.05 = 20 months. Always underestimate rather than overestimate.

Why does the calculator include a Discount Rate?

Money received in the future is worth less than money today due to inflation and opportunity cost. The "Discount Rate" (usually 8-12%) adjusts future profits into "Present Value" (PV). This gives you a realistic view of what that future cash flow is worth right now.

Can LTV ever be negative?

LTV itself generally cannot be negative unless your Gross Margin is negative (i.e., you sell products for less than they cost to make). However, your "Net LTV" (LTV minus CAC) can certainly be negative if you spend more to acquire a customer than they ever generate in profit.

What is the payback period?

The payback period is the time it takes for a customer's cumulative gross profit to equal the cost to acquire them (CAC). For funded startups, a payback period of <12 months is ideal. If it takes >18 months to break even, you risk running out of cash before realizing profits.

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