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Calculate your service business's Lifetime Customer Value (LTV) to understand true client profitability.
Your average revenue generated from a single client each month. For project-based clients, estimate a monthly average.
Default: 2497
Your gross profit margin for the services you provide, as a percentage. This is revenue minus direct costs of delivery.
Default: 60
The percentage of your clients who cancel or do not renew their service each month. (e.g., 4% means 4 out of 100 clients churn monthly).
Default: 4
The average cost to acquire one new client (e.g., total marketing/sales spend divided by new clients).
Default: 800
This calculator uses a core LTV formula for services: LTV = (Average Monthly Revenue Per Client × Gross Margin) / Monthly Churn Rate. We convert the monthly churn rate into an average customer lifespan (Lifespan = 1 / Churn Rate). For example, a 4% monthly churn rate means a client stays for an average of 25 months (1/0.04). The formula then calculates the total gross profit you can expect from a client over their entire relationship.
A small local business owner evaluating the long-term value of a client on a standard marketing retainer.
LTV: $3,745.50 | LTV:CAC Ratio: 4.68:1
With an ARPU of $2,497 and a 60% gross margin, each client generates $1,498.20 in monthly profit. A 4% monthly churn rate means clients stay for an average of 25 months. This results in an LTV of $37,455.00 over 25 months. When divided by a CAC of $800, the LTV:CAC ratio is excellent at 4.
A medical practice manager assessing the value of a high-tier client with lower churn due to specialized services.
LTV: $9,791.60 | LTV:CAC Ratio: 8.16:1
For a medical practice, an ARPU of $3,497 with a 70% gross margin yields $2,447.90 in monthly profit. A lower 2.5% monthly churn rate suggests a longer client lifespan of 40 months. This gives an LTV of $9,791.60. Compared to a CAC of $1,200, the LTV:CAC ratio is 8.16:1.
A professional services firm with project-based work, converting average project value to a monthly equivalent for LTV calculation.
LTV: $6,250.00 | LTV:CAC Ratio: 12.50:1
Assuming an average project value translates to $1,000 ARPU with a 50% gross margin, the monthly profit is $500. A higher churn rate of 8% means a shorter lifespan of 12.5 months. This results in an LTV of $6,250.00. With a low CAC of $500, the LTV:CAC ratio is an impressive 12.50:1.
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See your real numbersThis calculator uses the widely accepted LTV formula: LTV = (Average Monthly Revenue Per Client × Gross Margin) / Monthly Churn Rate. The customer lifespan is derived as 1 divided by the monthly churn rate. The LTV:CAC ratio is calculated by dividing the LTV by the Customer Acquisition Cost.
Customer Lifetime Value (LTV) is the total revenue a business can reasonably expect from a single customer account over the entire period of their relationship. For service businesses, this means calculating the total profit generated from a client, factoring in their monthly spend, your profit margins, and how long they typically stay with you. It's about seeing the big picture beyond the first invoice.
LTV helps you make smarter decisions about marketing spend and client acquisition. If you know how much a client is worth, you can understand how much you can afford to spend to get them. It shifts focus from short-term gains to long-term client relationships. Businesses that track LTV are better at retaining clients and growing profitably, avoiding the trap of overpaying for new customers that quickly churn.
The industry benchmark for a healthy LTV:CAC (Customer Lifetime Value to Customer Acquisition Cost) ratio is at least 3:1. This means for every $1 you spend to acquire a client, you should expect to generate at least $3 in profit from them over their lifetime. A ratio below 3:1 suggests poor profitability, while a ratio above 5:1 might indicate you could invest more in growth.
An effective digital marketing agency doesn't just bring in new leads; it helps you acquire higher-value clients who stay longer. Through targeted SEO, Google Ads, and content strategies, an agency can attract clients who are a better fit for your services. This leads to higher average revenue per client and lower churn rates, directly increasing your LTV. Combining SEO and paid ads ensures you build a compounding engine for long-term value.
To use this calculator, you'll need three main pieces of information: your average monthly revenue per client (ARPU), your gross profit margin percentage for those services, and your monthly customer churn rate percentage. If you also know your Customer Acquisition Cost (CAC), the calculator will provide your LTV:CAC ratio, a key metric for evaluating your marketing efficiency.
This calculator uses an average monthly revenue per client (ARPU) which can be an average across different client types. For project-based clients, you can estimate their average monthly contribution over the expected duration of their relationship. For retainer clients, it's their consistent monthly fee. This approach provides a solid baseline for understanding overall client value.
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