What is Cost Per Click?
Cost Per Click (CPC) is a digital advertising pricing model where advertisers pay a fee each time their ad receives a click from a user. Rather than paying for impressions (views) or conversions, you only pay when someone actually clicks on your advertisement.
CPC is one of the most common bidding models in online advertising, used across search engines, social media platforms, and display networks. It's sometimes called "pay-per-click" (PPC) pricing, though PPC is technically the broader category of advertising where you pay for actions rather than impressions.
How CPC Works
When you run a CPC campaign, you set a maximum bid – the highest amount you're willing to pay per click. The actual cost you pay per click may be less than your bid, depending on competition and the auction system used by the advertising platform.
For example, if your maximum CPC bid is £2.50 and your ad receives 100 clicks, you'll pay approximately £250 (before platform fees). However, if the actual clicks cost £1.80 on average, your total spend would be £180.
Why CPC Matters
CPC is essential for understanding campaign efficiency and budgeting. It helps you:
- Control costs: You only pay when users show intent by clicking
- Compare performance: CPC allows you to benchmark across different channels and campaigns
- Optimize budgets: Lower CPC means your ad spend stretches further
- Plan ROI: Knowing your CPC helps you calculate whether conversions will be profitable
For example, if your average CPC is £1.50 and your average order value is £50, with a 10% conversion rate, each click is worth £5 on average. This helps you decide if the £1.50 cost is justified.
CPC vs Other Pricing Models
CPM (Cost Per Mille): You pay per 1,000 impressions, regardless of clicks. CPM is often cheaper per interaction but wastes budget on uninterested users.
CPA (Cost Per Action): You pay only when a user completes a specific action (purchase, signup, download). CPA is performance-focused but may have higher per-click costs.
ROAS (Return on Ad Spend): This measures profit generated per pound spent, combining CPC with conversion value.
CPC sits between CPM (paying for visibility) and CPA (paying for results), making it ideal for driving traffic and measuring user interest.
Common CPC Platforms
- Google Ads: Search campaigns, Shopping, and Display Network
- Microsoft Advertising: Bing search ads
- Facebook & Instagram: Link clicks, traffic campaigns
- LinkedIn: Sponsored content and InMail
- Amazon Ads: Sponsored products and brands
Typical CPC Ranges
CPC varies dramatically by industry, competition level, and targeting:
- Finance/Legal: £2–£15+ (high competition, high-value customers)
- E-commerce: £0.50–£3 (moderate competition)
- SaaS: £1–£8 (depends on deal value)
- Social media: £0.30–£2 (typically lower than search)
Competitive keywords in your industry will naturally have higher CPCs because more advertisers are bidding.
How to Reduce CPC
- Improve Quality Score by enhancing ad relevance and landing page experience
- Refine keyword targeting to focus on high-intent terms
- Use negative keywords to exclude irrelevant searches
- A/B test ad copy to improve click-through rate (CTR)
- Optimize bid strategy based on conversion data
- Target less competitive long-tail keywords
Key Takeaway
CPC is a straightforward, performance-oriented pricing model that works well when your goal is driving traffic or generating leads. It's transparent, measurable, and gives you direct control over costs. However, it's important to evaluate CPC in context with conversion rates and overall ROI – a low CPC means nothing if clicks don't convert to customers.