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What is Customer Acquisition Cost (CAC)?

Updated 2026-05-28

Customer Acquisition Cost, or CAC, represents the total amount of money a vacation rental business spends to gain a new customer (a guest who makes a booking). This key performance indicator (KPI) is calculated by dividing the total costs associated with acquisition by the total number of new customers acquired over a specific period.

It is a critical metric for understanding the efficiency and profitability of marketing and sales efforts.

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How it works

To calculate CAC, you sum all sales and marketing costs for a given period and divide that total by the number of new guests acquired during that same period. These costs can include advertising fees on platforms like Google or Meta, commissions paid to Online Travel Agencies (OTAs), salaries for marketing staff, and subscription costs for marketing software.

For example, if a property manager spends $1,000 on marketing in a month and acquires 10 new bookings, the CAC for that month is $100. This metric provides a clear financial measure of how much it costs to generate each new booking.

Why it matters

Understanding CAC is crucial for vacation rental managers to assess the financial viability of their marketing strategies. It helps determine which channels provide the best return on investment (ROI), enabling smarter budget allocation.

By comparing CAC to the Customer Lifetime Value (CLV), managers can ensure their acquisition strategy is profitable in the long run and make informed decisions about pricing and marketing spend.

Examples

  • A host spends $300 on a Facebook ad campaign in May, which results in 4 new direct bookings. The CAC for this campaign is $75 per guest ($300 / 4).
  • A property manager lists a property on Vrbo, which charges a 15% commission. For a booking with a total value of $2,000, the commission is $300. In this case, the acquisition cost for that specific booking via Vrbo is $300.
  • To promote a new cabin, a company pays a travel influencer $500 for a post. The post directly generates 5 bookings. The CAC for this influencer campaign is $100.
  • A manager analyzes their quarterly report and finds that the CAC for bookings from their direct booking website is $45, while the average CAC from OTAs is $130. They decide to allocate more of their marketing budget to SEO to attract more direct bookings.

Frequently asked questions

What is a good CAC for a vacation rental?+
There is no universal 'good' CAC, as it is relative to a property's average booking value and guest lifetime value (CLV). A common benchmark is to aim for a CLV-to-CAC ratio of at least 3:1, meaning the revenue a guest generates over their lifetime is at least three times the cost of acquiring them.
How can I lower my Customer Acquisition Cost?+
Focusing on a direct booking strategy is key to lowering CAC. Vacation rental software like Lodgify offers tools like a website builder to help you capture commission-free reservations, which directly lowers your average CAC over time. Other methods include encouraging repeat guests, refining paid ad campaigns, and improving your property's organic search visibility (SEO).
Should I include OTA commissions in my CAC calculation?+
Yes, OTA commissions are a direct cost of acquiring a guest through that specific channel. Including them in your calculations is essential for accurately comparing the cost-effectiveness of various distribution channels, such as OTAs versus your direct booking website.
What is the difference between CAC and Cost Per Booking?+
While often used interchangeably in the vacation rental industry, CAC technically refers to acquiring a *new* customer, whereas Cost Per Booking can apply to both new and returning guests. For operators who treat each booking as an independent transaction, the terms are functionally the same.
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