Google Ads Target CPA calculator
Target CPA (target cost per action) is your average deal value times your gross margin, less the profit you keep, times the close rate from the conversion you bid on. The calculator also gives your breakeven CPA, the most a conversion can cost on average before your ads cost more than the gross profit it brings in. Choose the conversion your campaigns bid on: leads, marketing-qualified leads (MQLs), or sales-qualified leads (SQLs).
Enter your deal value, gross margin, and close rate to see your Target CPA.
01The basics
What is Target CPA in Google Ads?
Target CPA in Google Ads is a Smart Bidding strategy that sets a bid for each auction to get as many conversions as it can at the average cost per conversion you choose. Google's help page on Target CPA bidding says the target is an average: a single conversion can cost more or less than it, while the campaign's overall cost per conversion stays close to it. Since June 2026, Google Ads has been relabeling the strategy from “Maximize Conversions with a Target CPA” to “Target CPA,” and the bidding works the same.
The bid strategy optimizes only toward the conversion actions you include in the Conversions column. That's why the right target depends on which conversion you bid on. Bid on every form fill and Target CPA works as a target cost per lead. Bid on qualified leads and it works as a target cost per qualified lead, a higher number, because only some leads qualify.
02The formula
How do you calculate Target CPA?
You calculate Target CPA by multiplying your average deal value by your gross margin minus the profit you keep, then by your close rate from the conversion you bid on to a customer. The first part is what you can spend on ads to win one customer. The close rate turns that into what you can spend per conversion. Gross margin here is what's left of a deal's revenue after the cost of delivering it, before ad spend.
Target CPA
Deal value × (gross margin − profit) × close rate. It's the average cost per conversion that leaves you the profit you set, and the number you enter in Google Ads.
Breakeven CPA
Deal value × gross margin × close rate. It's the gross profit one conversion brings in, so the most it can cost on average before your ads lose money. Your Target CPA sits below it by the profit you keep.
For example, a business with a $10,000 average deal, a 50% gross margin, and 10% of revenue kept as profit can spend $4,000 in ads to win a customer: $10,000 × (50% − 10%). If 1 in 10 of its leads becomes a customer, its Target CPA on leads is $4,000 × 10% = $400, and its breakeven CPA is $10,000 × 50% × 10% = $500. If it bids on MQLs instead and 1 in 4 MQLs becomes a customer, its Target CPA is $1,000 and its breakeven CPA is $1,250.
03The conversion
Which conversion should you set Target CPA on?
Set Target CPA on the deepest conversion that reaches Google Ads often enough for bidding to learn from: qualified leads once offline conversion tracking sends them back, and leads until it does.
Bidding on leads
Every form fill, tracked call, and booking counts, so conversions come in quickly and bidding has plenty to learn from. The risk is that bidding learns to buy whatever fills in the form: spam, job seekers, and people you can't serve count the same as a buyer. A falling cost per lead (CPL) can hide a rising cost per qualified lead.
Bidding on qualified leads
A target on MQLs or SQLs bids for the leads your sales team accepts, so budget moves toward the searches that become customers. Google Ads can't see which leads qualified, so this needs offline conversion tracking: your CRM sends each qualified lead back to Google Ads, matched to the click that produced it. Fewer conversions come back than with leads, so bidding has fewer to learn from.
Make the stage you bid on a primary conversion action, so it counts in the Conversions column, and keep the other stages secondary. Then enter the close rate from that stage in the calculator. To see what a qualified lead costs you today, divide ad spend by MQLs. The guide to cost per marketing-qualified lead covers the formula and the tracking it needs.
04In practice
How do you set Target CPA in Google Ads?
Set Target CPA in Google Ads near what the campaign pays per conversion now, then move it toward the number from this calculator in steps, judging each step after a full conversion cycle. A conversion cycle is the time a click usually takes to become a conversion.
Google's guide to how its bidding algorithms learn recommends starting with a target that matches your historical CPA. When a campaign has conversion history, Google Ads suggests a target from its recent average CPA, adjusted for conversion delays. A target set far below that can cost you conversions, because bidding passes on clicks that might have converted.
Changing the target doesn't restart learning. Google says bids adjust right away and the strategy keeps what it has learned, while results move toward the new target over the course of a conversion cycle. Its page on Smart Bidding learning advises against making several target changes within a single conversion cycle, so wait a full cycle before you judge a change or make the next one.
If the campaign already pays more than your breakeven CPA, a lower target asks bidding to find cheaper conversions in the same auctions. Cost per conversion is cost per click divided by conversion rate, so closing the gap usually takes fewer wasted clicks or a landing page that converts more of them as well. ReClick's Google Ads management (PPC management) sets bidding on the leads your sales team qualifies, through offline conversion tracking, and answers for one number: your cost per qualified lead.
Keep exploring
Related guides
To check what you pay per lead now, and the most a lead can cost at your close rate, use the Google Ads cost per lead calculator.
If you send deal values back to Google Ads and bid on return on ad spend (ROAS) instead of a cost per conversion, the breakeven ROAS calculator gives the ROAS your margin needs to break even.
Target CPA FAQs
Answers to common questions about calculating, setting, and adjusting Target CPA in Google Ads.
A good Target CPA is one below your breakeven CPA by the profit you want to keep, worked out from your own deal value, gross margin, and close rate. An industry average doesn't know your margin or how often your leads close, so it can't tell you what a conversion is worth to you. Two businesses in the same industry can need very different targets.
Only when you bid on leads. Target CPA is the average cost per conversion Google Ads aims for, and the conversion is whichever action you include in the Conversions column. Bid on form fills and it works as a target cost per lead. Bid on MQLs and it works as a target cost per MQL, which is higher, because only some leads qualify.
No. Set Target CPA below breakeven by the profit you want to keep. At breakeven, the ads cost all of the gross profit a conversion brings in. Target CPA is also an average, so your actual cost per conversion can land above it in a given week, and a target at breakeven leaves no room for that.
Change Target CPA at most once per conversion cycle, the time a click usually takes to become a conversion. Google says a new target takes effect right away without restarting Smart Bidding's learning, but results move toward it over the course of a conversion cycle, so judge each change after a full cycle has passed.
Only to bid on qualified leads. Target CPA works on any conversion Google Ads records, and once conversion tracking is set up, Google Ads records form fills, calls, and bookings on its own. Whether a lead qualified is decided in your CRM, so MQLs and SQLs reach Google Ads only through offline conversion tracking.
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