What It Is
Cost Per Acquisition (CPA) is the average amount of money you spend on marketing to gain one new customer. It accounts for all the ad spend, clicks, and interactions that happen before someone actually becomes a paying customer. CPA gives you a single number that tells you how efficiently your marketing turns dollars into business.
Formula
CPA = Total Marketing Spend / Number of New Customers Acquired
For example, if you spent $1,000 on Google Ads in a month and gained 10 new customers from those ads, your CPA is $100. That means each new customer cost you $100 in advertising to acquire.
Why It Matters
CPA is one of the clearest ways to know whether your marketing spend makes sense for your business. If your average job brings in $500 in revenue and your CPA is $100, you are in a strong position. If your CPA is $450, you have a problem. Knowing this number helps you set realistic budgets and compare different marketing channels against each other.
Common Misconception
Many business owners confuse CPA with CPL (Cost Per Lead). A lead is someone who contacts you. An acquisition is someone who actually pays. Your CPA will always be higher than your CPL because not every lead becomes a customer.
FAQ
What is a good CPA for a local service business?
It depends entirely on your average job value and profit margins. A good rule of thumb is that your CPA should be no more than 10 to 20 percent of your average revenue per customer. A plumber with a $300 average ticket has a different target CPA than a restoration company averaging $5,000 per job.
How do I lower my CPA?
Focus on improving two things: the quality of traffic coming to your site and the conversion rate of your landing page. Better targeting brings in more qualified visitors, and a stronger landing page turns more of those visitors into leads.
Should I track CPA separately for each marketing channel?
Absolutely. Your CPA from Google Ads will likely be different from your CPA on Facebook or from organic search. Tracking each channel separately helps you put more budget toward what is working and cut what is not.
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