Tool
CPA / Target CPA Calculator
Find the highest CPA you can pay and still hit your profit goal. Enter your AOV, gross margin, and target ROI — get max payable CPA, breakeven CPA, and max CPC at your conversion rate.
Your Unit Economics
Revenue minus COGS, as a % of revenue
Profit you want above breakeven (200% = 2× return)
Used to calculate max bid (CPC)
Enter AOV, margin, and target ROI to see your max payable CPA
Max Payable CPA
$0.00
Enter your numbersWhat your max CPA means
Read your number against breakeven and decide where to push.
Paying above breakeven?
Every acquisition is losing you money before LTV kicks in. Tighten targeting, cut low-quality keywords, or improve landing-page conversion before you scale spend — or accept the loss only if your repeat-purchase economics make it back.
Sitting at target?
You're hitting your profit goal. Test bid increases of 10–15% to see if you can scale volume without breaking ROI. Track actual CPA daily to catch drift — small daily moves beat big monthly resets.
Way under target?
You have room to bid more aggressively. Push spend on top performers, expand audiences, or test broader match types. You're leaving demand on the table — especially if your competitors aren't.
Frequently asked questions
What is target CPA and how do I calculate it?
Target CPA is the maximum you can pay to acquire a customer while still hitting your profit goal. It's gross margin per sale divided by (1 + target ROI). Example: $66 margin ÷ 3 (200% ROI) = $22 target CPA.
What's the difference between CPA and CAC?
CPA refers to the cost of a single conversion event — sale, lead, install — and is the metric ad platforms optimise to. CAC is the blended cost of acquiring a paying customer across all channels and includes non-ad costs like content production, sales salaries, and tooling.
How is breakeven CPA different from target CPA?
Breakeven CPA equals your gross margin per sale — pay any more and you lose money on day one. Target CPA bakes in your desired profit on top, so it sits below breakeven. Spending up to breakeven only makes sense if you have strong LTV that recoups the difference.
How do I find my gross margin?
Revenue minus COGS, as a % of revenue. For ecommerce, COGS includes product cost, shipping, payment processing, and packaging. For SaaS, it's hosting, support, and customer-facing infrastructure. AOV $120, COGS $54 → 55% gross margin.
Why does my actual CPA drift above target?
CPA drifts when bid strategy, audience saturation, creative fatigue, or competitor pricing changes. Pace's AI optimizer rebalances daily budgets toward campaigns hitting your CPA target across Google, Meta, TikTok, LinkedIn, and Microsoft Ads, and AI Sparks fires when CPA spikes more than 30% week-over-week. Hard overspend protection pauses campaigns when your monthly budget cap is exceeded.
Want Pace to keep your spend on target automatically?
Pace's AI optimizer rebalances daily budgets toward campaigns hitting your CPA target — and hard overspend protection caps spend at your monthly budget across Google, Meta, TikTok, LinkedIn, and Microsoft.
| This calculator | With Pace | |
|---|---|---|
| Frequency | Manual, when you remember | Every 5 minutes, automatically |
| Channels | One scenario at a time | Google, Meta, TikTok, LinkedIn, Microsoft |
| Action | Tells you the number | Pauses overspending campaigns |
| History | Resets on refresh | Full audit trail of every change |