A store with a $72 AOV and a 58% gross margin makes $41.76 of margin per order. To keep a third of that as profit, it can spend up to about $28 to acquire a customer. Any campaign with a CPA above $28 is losing money on the first order.
CPA calculator
Calculate your ideal Target Cost Per Acquisition (CPA) with our advanced e-commerce tool. Factor in product costs, shipping, and transaction fees to determine the maximum you can spend on ads while maintaining your desired profit margin.
5/5 on ShopifyTrusted by 500+ brands
Example and tips
- Set your max CPA from margin, not revenue. A $72 sale at 58% margin only funds a $28 acquisition, not $72.
- Decide if you optimize for first-order profit or break-even acquisition. Repeat-purchase brands can afford a higher CPA.
- If your actual CPA sits above the target, fix conversion rate or AOV first. Cutting ad spend alone rarely closes the gap.
Kanal
What is Kanal?
Kanal turns WhatsApp into a sales channel for Shopify stores: abandoned cart recovery, order updates, campaigns to your segments, an AI chatbot and a shared inbox, with revenue tracked per message.
+90%open rate5/5on the Shopify App StoreFrom €89per month
See WhatsApp for Shopify in detailAbandoned cart flowFincut · WhatsAppLive
- Checkout abandonedTech T-shirt · Black, M
- Wait 1 hourSmart delay, quiet hours respected
- WhatsApp reminderProduct photo · 2 buttons
- Customer replyAnswered by the AI agent
- Order recovered#1042 · Paid in Shopify
Recovered this month€12,445.20
Your Shopify store on WhatsApp in 15 minutes
Leave your email and store address: a Kanal expert shows you the WhatsApp flows that pay for your catalog, cart recovery, order updates and campaigns.
How it works
Calculate your ideal Target Cost Per Acquisition (CPA) with our advanced e-commerce tool. Factor in product costs, shipping, and transaction fees to determine the maximum you can spend on ads while maintaining your desired profit margin.
- 1
1) Detail your unit economics
Enter your product's selling price, its cost of goods (COGS), and any other variable costs like shipping and payment processing fees.
- 2
2) Set your profit goal
Input your desired net profit margin as a percentage. This is the profit you want to make on each sale after all costs, including ad spend.
- 3
3) Reveal your maximum ad budget
The tool calculates the exact Target CPA you can afford. Stay below this number in your ad campaigns to ensure you hit your profit goals on every sale.
Frequently asked questions
What is Target CPA?
Target CPA (Cost Per Acquisition) is the maximum amount of money you can afford to spend on advertising to acquire one customer while still achieving your desired net profit margin. It's a forward-looking metric that helps you set smart budgets for your ad campaigns.
How is this different from a normal CPA calculator?
A normal CPA calculator tells you what you have spent in the past (Total Ad Spend / Conversions). This advanced Target CPA calculator tells you what you should spend in the future. It works backward from your profitability goals to give you a precise budget per acquisition.
Why are shipping and transaction fees so important for this calculation?
To find your true profit per sale, you must account for every variable cost. Shipping costs (if you pay for them) and payment processing fees (which you always pay) directly reduce the amount of money left over for advertising. Ignoring them gives you an inflated and unrealistic Target CPA.
What does "Profit Before Ad Spend" mean?
This is a crucial number. It represents the total profit you make from a single sale before you've paid to acquire that customer. Your entire ad spend for that customer (your CPA) must come out of this amount.
What should I do if my Target CPA is very low or negative?
A low or negative Target CPA indicates that your profit margins are too thin to support your desired level of profitability with paid advertising. To increase your Target CPA, you must: - Increase your prices. - Reduce your Cost of Goods Sold (COGS). - Find cheaper shipping options. - Lower your desired net profit margin goal.