Ad Spend Leak Calculator — What Your Ads Can't See

Monthly ad spend

Leads per month

Close rate (%)

Average deal value

Times a customer buys

Months a customer stays

No exact lifetime number? Estimate either one — purchases wins if you fill both. Leave blank for one-off sales.

Advanced · efficiency-gain assumption

Efficiency lift when the loop closes (%)

Closing the loop doesn't invent revenue — it lets the platforms optimize toward buyers. This is the share of currently-unoptimized revenue you recover. Conservative default: 20%.

Left on the table / month

$6,912

Per year$82,944

Based on lifetime value where provided, first-sale value otherwise.

How this is calculated

No magic. Just your own numbers.

Leads × close rate gives you customers. Customers × deal value × lifetime gives you revenue. The figure above is the share of that revenue your ad platforms currently can't see — and therefore can't optimize toward.

Step 01

Your revenue Leads × close rate × deal value, multiplied by repeat purchases or months retained if you gave them.

Step 02

The invisible share None of that revenue is reported back to Meta or Google. They optimize on form fills instead.

Step 03

The recoverable lift 20% by default — the conservative end of what closing the loop typically returns. Adjust it in Advanced.

That number doesn't fix itself. One line of code does.

FormLock Track sends your closed deals back to Meta and Google automatically, so your ads start finding people who look like the ones who actually paid.

See how Track works

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