The average amount you spend to land one new client — ads, tools, platform fees, and the value of your own time — added up and divided by clients won.
Customer acquisition cost is the price tag on winning a client. Add up what you spent chasing new business in a period — ad spend, marketplace fees, tools, and the hours you poured into outreach and proposals — then divide by the number of clients it produced. If you spent $600 and landed 3, your CAC is $200.
For sellers, CAC is the reality check on “free” marketing. Cold outreach feels free but eats hours you could bill; a marketplace charging 20% commission adds to your cost of every client. The number only makes sense next to lifetime value: paying $200 to acquire a client worth $2,000 is a bargain, while paying $200 for a one-off $150 job loses money.
For buyers, you don’t calculate this, but it explains freelancer behavior — someone who spent a lot to find you will work hard to keep you.
The biggest hidden driver of CAC for independents is platform commission, which taxes every client you win. Cutting it directly lowers your acquisition cost — see what those fees add up to with the commission savings calculator.