When I started reviewing the expenses behind one of my recent marketing campaigns, I realized that the total budget alone did not tell me whether I was spending efficiently. I needed to know how much it actually cost to bring in each new customer, so I decided to calculate my Customer Acquisition Cost instead of relying on assumptions. I found Selzy’s free calculator and gave it a try because it allows several types of expenses to be included rather than focusing only on advertising. I entered the amount spent on social media and contextual ads, then added the salaries connected with marketing and sales activities. After that, I included software expenses, such as hosting, email services and analytics tools, as well as payments for freelancers and other contractors. I also left room for miscellaneous marketing expenses that can easily be forgotten when calculating a campaign budget. While working through the numbers, https://selzy.com/en/free-tools/customer-acquisition-cost-calculator/ helped me understand the calculation in a much more practical way. I then entered the number of customers acquired during exactly the same period as the expenses. The calculator produced an average acquisition cost per customer, which gave me a much clearer basis for comparing campaigns and channels. I especially liked that the information explains why CAC should be considered together with LTV, since a low acquisition cost does not automatically mean a campaign is profitable. The whole process was quick, and I can see myself using the calculator regularly when reviewing marketing performance.