Customer Acquisition Cost (CAC) Calculator
Quickly measure your customer acquisition cost and track marketing efficiency with our CAC calculator. Below, we explain what CAC, LTV, and the LTV/CAC ratio mean—and how to calculate and apply them to your business.
Last updated: July 2025
Contributed and reviewed by: Igor Shaverskyi
Created by: Waveup finance and content teams
Inputs
Paid and ongoing marketing expenses
Consider sales, marketing team (incl. CMO) base salaries, social contributions, taxes, commission, etc.
and comissions
Consider marketing services and relevant software (CRM) subscription fees, travelling expenses (if applicable for sales), etc.
related expenses
acquired
Outputs
The cost a company incurs to acquire a new customer, including marketing and sales expenses.
Why use a CAC calculator?
The success of a product is directly linked to revenue, which, in turn, depends on Customer Acquisition Costs (CAC). The money spent on acquiring customers (CAC) plays a crucial role in determining how much revenue you’ll be able to earn.
Our customer acquisition cost (CAC) calculator helps you get a clear picture of that cost so you can:
- Stay on top of spending
- Plan finances
- Guide budget decisions
- Optimize marketing channels
- Measure how well your marketing campaigns are performing
- Make strategic growth decisions
- Understand how you stack up against competitors
- Build trust with investors
- Know which customer segments or products are actually profitable
Note: High conversion but low profitability? It may be time to refine your marketing funnel for optimal ROI. Optimize your website, clarify product messaging, and implement targeted upselling strategies. Refine advertising channels based on performance data for cost-effective results.
What is Customer Acquisition Cost (CAC)?
Customer acquisition cost (CAC) is the total cost of attracting a customer. Think of it as the price you pay to get someone into your business\'s door. CAC is an important metric to calculate over defined periods such as a week, a month, or the length of an advertising campaign. It helps businesses determine their customer acquisition efforts\' return on investment (ROI).
By using a CAC calculator, you’ll know your company\'s spending on:
- Digital marketing (ads, social media, content)
- Billboards & broadcast advertising
- Telemarketing
- Social media campaigns
- Personnel & Development
- Marketing team salaries & commissions
- Ad design & development costs
- Referral program costs
- Website optimization expenses
- Event participation
The difference between new CAC vs blended CAC
The customer acquisition cost metric falls into two categories—new CAC and blended CAC. Let’s break them down.
New CAC: When you calculate new CAC, you calculate the cost of brand-new customers. Here, you look only at the money you spent on getting people who have never bought from your company. The new CAC ratio is usually higher because it takes more effort and dollars to convince a “new” person to trust your business.
Blended CAC: In this case, you need to consider new customers and the money you spend on getting more sales from your existing customers. You can get more sales through cross-selling, upselling, or revenue expansion. These customers already know your brand and trust your company, so it’ll be easier to convince them to buy from you again. That’s why the blended CAC ratio is typically lower than the new CAC.
In short, new CAC calculates the cost of acquiring new customers, while blended CAC mixes the cost of new customers and additional sales from existing customers.
How do you calculate customer acquisition cost?
If you’re not sure how to calculate your CAC accurately, follow these steps:
- Choose your timeframe: You need to pick a period you\'re going to analyze, be it a month, quarter, or maybe you want to look at the whole year.
- Add up your marketing expenses: Count each dollar you spent on marketing and sales during that period—ads, content, salaries, events, tools, and more.
- Count your new customers: How many new faces did you see during the chosen timeframe? Get that number ready.
- Calculate the customer acquisition cost: Now, take the total marketing expenses (Step 2) and divide them by the number of new customers acquired (Step 3). That’s your cost per customer acquisition (CAC ratio).
*This is a simplified guide. Client acquisition cost formulas and calculation approaches can vary depending on your business model and industry. It’s worth noting that we targeted to make our CAC calculator as simple and user-friendly as possible so the users do not get confused and easily get accurate results.
Check out the cost of acquisition formula below:
What is a good customer acquisition cost?
Calculating customer acquisition cost as a standalone metric won’t give you results that are too informative. Instead, combine it with the customer lifetime value (LTV) metric.
While there\'s no universally perfect LTV: CAC ratio, the agreed-upon sweet spot is at least 3:1. Ideally, you spend about 33% of your average LV on new customer acquisition. Ultimately, a healthy LTV: CAC ratio highly depends on your specific business model, industry trends, and customer acquisition strategy.
Note: Don\'t stick to a single ideal ratio. Instead, take a contextual approach—consider your margins, payback period, and customer retention rates. What’s sustainable for one business might not be for another.
Over time, focus on improving CAC through better targeting, more efficient channels, and stronger retention. And if you\'re curious how your CAC compares, here’s a look at typical ranges by industry:
CAC benchmarks by industry—First Page Sage report (2025)
CAC by marketing channel—HubSpot survey (2025)
What is the CAC payback period?
The CAC payback period is the time it takes for a company to recover its cost of acquiring a new customer. Factors like marketing spending, service prices, and what customers pay influence it. For example, more straightforward methods like social media may have lower payback periods, while more involved campaigns with mailers and billboards may take longer.
This formula can help calculate the CAC payback period:
Common CAC limitations
Calculating customer acquisition cost will help you optimize your marketing budget, ensuring you get the most value of your customer acquisition efforts. However, this metric has several limitations:
- CAC significantly depends on your industry and business model: Ensure you have other industry benchmarks against which you can compare CAC.
- CAC is sensitive to market fluctuations: Given changing customer behavior during holidays or economic downturns, it may be hard to calculate customer acquisition cost precisely and, thus, evaluate the effectiveness of your strategies.
- CAC doesn\'t account for customer lifetime value: On its own, CAC tells you how much it costs to acquire a customer, but not how much that customer is worth over time. A high CAC isn’t necessarily a problem if your customer lifetime value (LTV) is even higher. That’s why it’s important to look at both metrics together to understand true profitability.
- Many traditional CAC calculators and formulas omit a bunch of costs: Hidden expenses like discounts or free trials and costs associated with staff time and subscriptions to marketing products—all these aspects must be considered as well.
What is the customer lifetime value (LTV)?
LTV or CLV stands for Customer Lifetime Value and is a measure of a customer\'s overall value throughout their relationship with your company.
This goes beyond a single sale and captures the cumulative revenue expected over the customer\'s lifetime.
This formula can help calculate the LTV:
How are CAC and LTV connected?
While CAC calculates the cost of acquiring a new customer, LTV indicates the total value one new customer brings in. While CAC reflects the cost of acquiring a new customer, LTV indicates the total revenue but gross profit per 1 new customer. Companies often combine CAC and LTV data to determine their LTV to-CAC ratio to better understand operating costs and profit potential. You can also see the connection by:
- Identifying a healthy LTV/CAC ratio: Usually, it is 3:1, meaning your customers generate three times more revenue than what it cost to acquire them. This signals a strong return on investment and long-term sustainability.
- Prioritizing your acquisition strategy: A higher LTV gives you more room to spend on acquisition. If a customer brings significant long-term value, a higher CAC can be justified—especially if it leads to better quality leads.
- Optimizing marketing efforts: By analyzing LTV across customer segments and marketing channels, you can pinpoint which ones deliver the best ROI. That lets you double down on what’s working—channels with lower CAC and higher LTV.
- Informing your pricing: Understanding LTV helps you price with more intent. Products aimed at high-value customers can often support higher price points—and, with that, a higher CAC.
- Strengthening retention: Retention is a major LTV driver. Loyalty programs, upsells, and better customer experiences help boost lifetime value and improve your LTV/CAC ratio over time.
Note: If the money you earn from a customer over their lifetime exceeds what you spent to acquire them (LTV is higher than CAC), your business is profitable, which is positive.
How to calculate LTV/CAC ratio?
The LTV to CAC or LTV/CAC ratio shows how efficiently you\'re spending to earn revenue from customers. It helps you make smarter moves around acquisition, retention, marketing, and pricing—ultimately driving more sustainable profitability.
This formula can help calculate the LTV to CAC ratio:
Note: Aim for an LTV that’s at least three times your CAC to stay in a healthy zone and avoid overspending on customer acquisition. That said, context matters—look at historical trends and competitor benchmarks. If your ratio dips below 3:1 during strong growth, it doesn’t always mean you need to cut back—just be thoughtful about why it’s happening and whether it’s part of a longer-term strategy.
Strategies to improve CAC and LTV
As a rule of thumb, there are two ways to improve a company’s KPIs—either lower the cost of acquiring customers or make customers stay with your business longer.
To improve the customer acquisition cost ratio, you need to:
- Optimize your marketing budget (spend less and smarter);
- Cut down the marketing channels that don’t work;
- Focus on targeting the right audience;
- Use free or low-cost methods like partnerships, viral content, or freemium models;
- Reduce the time it takes to close a deal (it can help save on staff costs);
- Improve your website’s conversion rate instead of spending more on marketing.
Let’s enter two hypothetical scenarios:
Imagine you have a 4% conversion rate—40 people out of 1,000 website visitors become your customers. If each visitor costs you $4, it means you’re spending $4,000 to get these 40 customers. As a result, your CAC is $100 per customer.
Now, let’s say you’ve increased your conversion rate to 5%, and you get 50 customers from those same 1,000 visitors. Your marketing budget remains the same—$4,000. However, the cost of acquiring a customer is now 20% lower—$80 per customer. As you can see, it’s better to improve your conversion rate so you bring down your CAC rather than try to cut your marketing costs by 20%.
If you aim to improve your LTV, prepare for a whole different game. As mentioned above, LTV measures the quality of relationships with your customers and how important your service/product is to them.
Customer retention is a possible solution here—stop your customers from leaving too soon, and they’ll spend more money. Additionally, think about how to gradually upsell your customers on more products/services. The longer they stay with the company, the more valuable they become because they spend more.
Get insights into your business health with CAC and LTV
By calculating CAC and LTV, you can see if your customers are worth the money you spend on acquiring them. If your LTV is higher than your CAC, you’re on the right track. If not, you need to rethink your strategy.
LTV and CAC calculators also assist in your fundraising journey. Many investors love these metrics. The LTV/CAC ratio helps them assess how well you know your customers and whether you can keep them coming back.
If you want to go a level deeper, use our CLTV Calculator and Magic Number Calculator to explore your unit economics and understand how efficiently you\'re growing.