PPC advertising costs vary significantly based on industry, platform, keyword competition, and campaign objective. On Google Search, cost-per-click ranges from under a dollar in low-competition categories to $50 or more in highly competitive industries like legal services, finance, insurance, and medical. The total cost of a PPC campaign is determined by the daily or monthly budget the advertiser sets, combined with how many clicks that budget purchases at the prevailing CPC in the market.
There is no universal minimum budget for PPC, but the budget needs to be sufficient to generate enough data to support optimization decisions. A campaign generating only one or two clicks per day cannot produce enough signal to improve meaningfully. A practical minimum for most markets is a budget that generates 30 to 50 clicks per week, which in competitive categories typically means at least $500 to $1,000 per month, though simpler campaigns in lower-competition markets can be effective on less.
The most useful framework for evaluating PPC cost is relative to the business’s economics: what is a new customer worth, and what cost per acquisition would make the channel profitable? Working backward from that number establishes what CPCs and conversion rates are needed for PPC to make sense, and sets the benchmark against which actual performance should be measured. Businesses that start from this framework are better positioned to evaluate early results and decide whether to scale, optimize, or stop.
