What Is a Good Cost Per Lead in Google Ads?

Judge the value behind the enquiry

Why a cheap conversion is not always a good lead

A good Google Ads cost per lead is one your business can afford while acquiring worthwhile customers. There is no universal target. Assess the advertising cost per enquiry, the proportion that qualifies and the proportion that becomes a customer before deciding whether a campaign is commercially successful.

A low headline cost can hide unsuitable enquiries. A higher figure can be acceptable when the leads fit your service, convert into customers and leave enough contribution to cover acquisition and operating costs. The same price per lead can therefore be sensible for one business and unworkable for another.

Our Google Ads management service connects campaign reviews with client feedback, because the account does not automatically reveal the outcome of every call or form.

How to calculate cost per lead

For a clearly defined period, divide advertising spend by the number of leads attributed to it. Decide what counts as a lead before doing the calculation, and keep that definition consistent when comparing campaigns.

Advertising cost per enquiry = Google Ads spend ÷ attributed enquiries.

In a hypothetical example, £1,000 of advertising spend and 20 enquiries gives a £50 cost per enquiry. If only ten of those enquiries meet the business’s qualification criteria, the advertising cost per qualified lead is £100. If four become customers, advertising cost per acquired customer is £250.

These figures describe three different stages. Management fees and other acquisition costs are excluded from this illustration. Include them when assessing the full economics of the channel, and avoid comparing an all-in figure with somebody else’s media-only CPL.

Define a qualified lead with the business

A useful definition should reflect the service offered and what the business can fulfil. For a local provider, this might mean a genuine prospect asking for a suitable job within the service area. Budget, timing or other eligibility requirements may also matter, depending on the business.

A relevant prospect who does not buy is not automatically a poor-quality lead. The reason could be availability, pricing, follow-up or competition. Separate wrong-service enquiries and spam from suitable opportunities that were not won; those problems require different responses.

At Colne Digital, we agree what a qualified lead means with the client. We can examine the searches and recorded conversions, but we need business feedback to understand whether the enquiries are useful. Google’s explanation of conversion measurement describes the actions an advertiser can measure; qualification needs a business definition too.

What enquiry costs do we see in practice

Across accounts we work with, we see advertising costs per enquiry around £10–£50. This is our practical observation, not an industry benchmark or a promise for a new campaign. It does not represent a formally calculated average across a defined period and sample.

The figure means cost per enquiry, not cost per qualified lead or paying customer. Industry, competition, geography, service value and the enquiry definition all affect whether a figure is useful. An account above £50 is not automatically failing, and one below £10 is not automatically profitable.

We recommend an initial budget through business and market research, followed by testing. Our UK Google Ads cost guide explains the wider budget considerations. An observed cost in another account should not replace that work.

Work backwards from an affordable customer cost

Start with what you can afford to spend acquiring a customer, after considering margin, fulfilment costs, overheads, management costs and the profit you need to retain. Sales revenue alone is not an acquisition budget. Use repeat-customer value only where there is evidence to support it.

Then estimate the proportion of qualified leads that becomes a customer. Use a consistent group of leads with enough time to complete the sales process; recently generated enquiries may still be open.

Maximum affordable cost per qualified lead = affordable acquisition cost per customer × qualified-lead-to-customer rate.

For example, if a business can allocate £300 of its customer acquisition allowance to advertising and one in four qualified leads becomes a customer, its planning limit is £75 per qualified lead: £300 × 25%. At £60 it may have room within that allowance; at £100 it needs to reassess performance or the assumptions. This is a hypothetical planning calculation, not a forecast.

Compare customers as well as leads

Consider two hypothetical campaigns. Campaign A generates 50 enquiries at £30 each, spending £1,500. Three become customers, making advertising acquisition cost £500 per customer. Campaign B generates 20 enquiries at £60 each, spending £1,200. Eight become customers, making the equivalent cost £150.

Campaign B has twice the enquiry cost but a lower customer acquisition cost. That comparison only becomes commercially meaningful once customer value, margins and the timing of the sales are considered too. A few early sales can also distort a small sample.

Keep a simple record of enquiry date, source where known, qualification status and sales outcome. Review the same definitions with whoever handles the leads. You do not need to pretend every enquiry can be attributed perfectly to start improving the quality of the discussion.

Investigate the cause before trying to lower CPL

A high CPL can reflect expensive clicks, low enquiry conversion, unsuitable searches or a market where valuable customers are costly to acquire. It can also be a reporting issue. Check the contact route and conversion measurement before assuming you need cheaper traffic.

If traffic is the issue, review search intent, exclusions and practical geographic coverage. If suitable visitors are not enquiring, assess the page, offer and next step. If suitable leads are not becoming customers, examine the sales process and customer feedback. Each diagnosis points to a different action.

Setting a target CPA does not establish what the business can afford. Google’s Target CPA guidance describes a target average cost per conversion, with actual results able to differ. A target built around the wrong conversion action can still reward outcomes you do not want.

When should you lower or accept a higher CPL

Lower enquiry cost is useful when suitability and eventual customer value are maintained or improved. It is less useful when cheaper traffic produces more forms but fewer worthwhile jobs. Avoid treating a reporting improvement as a business improvement until the later outcomes support it.

A higher CPL can be acceptable if the enquiries are more valuable, the close rate improves or the customers contribute more after costs. Make that decision using evidence and capacity, rather than accepting an expensive campaign merely because the service is high value.

Ready to Take the Next Step?

If your reported CPL looks attractive but the enquiries do not, request a FREE Google Ads audit. We can review campaign activity and discuss how your lead-quality feedback should inform the next decisions.