Your Leads Got Cheaper. Did Your Business Get More Customers?

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The report says your cost per lead dropped. The agency calls it a win. But the calendar does not look fuller, and the bank balance has not changed. If you have ever wondered whether cheaper leads actually helped, that doubt is reasonable.

Cost per lead measures what you paid for a form, call or inquiry, not whether that person became a customer. This guide shows how to work out a good cost per lead for your business, and how to check whether lower costs bring more customers or just more contacts.

A quick first check you can run yourself

1. Write down what is left from an average new customer’s sale after the direct cost of doing the work.
2. Decide the most of that you will spend to win one customer while still covering overhead and keeping a profit. That is your maximum cost per customer.
3. Multiply that maximum by your close rate (customers won divided by leads received) to get your ceiling cost per lead.
4. Pick a month that ended at least one full sales cycle ago. Divide its ad spend by its leads and compare with your ceiling cost per lead. Divide the same spend by the leads who became customers and compare with your maximum cost per customer.

What is a good cost per lead?

A good cost per lead is one your sales can pay for with profit left over. There is no single right number, because a lead for a roofing job and a lead for a coffee subscription are worth very different amounts. Published averages mix businesses with different prices and sales cycles, so they make a poor target.

You need three numbers. If you do not have them yet, that is the first tracking gap to fix:

Number	Where it comes from
What a new customer leaves you	Average first sale (or first-year value) minus the direct cost of delivering it. This is gross profit, before rent, salaries and other overhead
Close rate	Customers won divided by leads received, from your sales records
Maximum cost per customer you accept	The share of that gross profit you can spend to win the customer and still cover overhead and keep a profit

Maximum cost per lead = maximum cost per customer x close rate.

A worked example

A home services company keeps about $2,000 on an average job after materials and crew time. After overhead, the owner is willing to spend up to $500 to win a job. One in five leads becomes a job, a 20% close rate.

Maximum cost per lead = $500 x 0.20 = $100.

Now the cost per lead drops from $80 to $50. Good news, unless the close rate also drops from 20% to 8%. Then the cost per customer goes from $400 ($80 / 0.20) to $625 ($50 / 0.08). The leads got cheaper and each customer got more expensive.

The same math works for a law firm, a B2B software company or a med spa. Only the inputs change. (These figures are illustrative, not benchmarks.) We have seen cheaper leads bring fewer sales in a client account: our case study on how a windows and doors company turned cheap leads into real sales walks through it.

Why do leads get cheaper without more customers?

Possible reasons include:

• Looser targeting. Broader keywords or audiences bring in more people at a lower cost, but more of them may not be a fit. Our guide to the Google Ads search terms report shows how to see which searches you are paying for.
• Easier forms. Shorter and pre-filled forms can increase inquiries. Check how many become customers before calling it an improvement.
• Counting the wrong action. If a page view, a three-second call or a duplicate form counts as a lead, the number improves without real demand changing.
• Telling Google to chase form fills. If your campaign uses automated bidding set to pursue form fills, Google looks for more people likely to submit that form, according to Google’s help page on conversion goals. Ask whoever runs your ads whether the campaign is set to pursue every form fill, qualified prospects or completed sales.

For the wider set of cost levers, see ways to cut costs and boost leads in Google Ads.

How do you connect leads to sales?

You need to know which leads became customers. For a local or service business, the sale may happen offline, on the phone or in person.

Google Ads can match the sales you record back to the ad clicks that produced them. Google calls this offline conversion import, and for new users it now recommends a newer version, enhanced conversions for leads, that can match on details such as the customer’s email address. Ask whoever runs your ads to set it up.

Once sales data flows back, report cost per customer, not only cost per lead, and compare campaigns on close rate and revenue rather than lead volume.

Even without the integration, a simple spreadsheet works. Tag each lead with its source, mark it won or lost once your normal sales cycle has passed, and divide the spend for that period by customers won from those same leads. Recent periods look worse while deals are open; Google shows how to see how long your customers take to convert. If the gap is in tracking, our data intelligence service connects marketing data to business results.

Key takeaways

• A good cost per lead is set by your gross profit, overhead and close rate, not by an industry average.
• Cheaper leads with a lower close rate can make each customer more expensive.
• Check what counts as a lead, and what your campaign pursues, before celebrating.
• Send offline sales back to Google Ads, then report cost per customer on periods that have had time to close.

Questions to ask about your own business

• What does a new customer leave you after the direct cost of the work, and how much of that can you spend to win one?
• What share of last quarter’s leads became paying customers?
• What exactly counts as a “lead” in your ad reports?
• Is your campaign set to pursue form fills, qualified leads or sales?

Sources

• Google Ads Help: About offline conversion imports
• Google Ads Help: About conversion goals
• Google Ads Help: Find out how long it takes for your customers to convert