How to Track Ad Spend Profit for Ecommerce (Without Losing Your Mind)
8 min read
Last month, SKU B07X lost 12% margin. We thought it was a winning product. Turns out, our ad spend was eating up all the profit. We weren’t tracking ad costs per SKU—just lumping them into a generic "marketing" line item. Big mistake.
You might be in the same boat. You’re running ads, seeing sales, but your bank account isn’t growing. The issue? You’re not tracking ad spend profit accurately. Here’s how to fix it.
Why Most Ecommerce Sellers Get Ad Spend Profit Wrong
Most sellers track ad spend like this: total revenue minus total ad spend. That’s a start, but it’s not enough. You need to know the profit per SKU, not just the overall ad spend. For example, if you’re selling 10 SKUs, one might be profitable while the other nine are losing money. Without granular tracking, you’re flying blind.
Another mistake? Ignoring refunds and returns. A 5% refund rate on a $20 product is $1 per unit. Multiply that by 1,000 units, and you’ve just lost $1,000. That’s real money.
How to Track Ad Spend Profit Like a Pro
Tracking ad spend profit accurately requires a few key steps. First, you need to connect your ad platforms (Facebook, Google, TikTok, etc.) to your accounting system. Second, you need to track every cost—product cost, platform fees, shipping, refunds, and ad spend. Third, you need to see the true net profit per SKU, not just the top-line revenue.
We switched to Gomarginify in March. It connects to 10 marketplaces, including Amazon, Shopify, and TikTok Shop. It gives us true net profit per SKU, including ad spend. No more guessing. No more surprises.
The Hidden Costs You’re Probably Ignoring
Most sellers focus on the big costs—product cost, ad spend, platform fees. But the hidden costs are killing your profit. For example, a $3.20 referral fee on a $20 product is 16% of your revenue. That’s huge. Then there’s shipping. If you’re not tracking shipping costs per SKU, you’re missing a big piece of the puzzle.
Refunds are another hidden cost. A 3% refund rate on a $15 product is $0.45 per unit. That doesn’t sound like much, but multiply it by 5,000 units, and you’ve lost $2,250. That’s real money.
Step by step
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Step 1: Connect Your Ad Platforms to Your Accounting System
Start by connecting your ad platforms (Facebook, Google, TikTok, etc.) to your accounting system. This ensures you’re tracking ad spend accurately. For example, if you’re spending $500 on Facebook ads and $300 on Google ads, you need to know exactly where that money is going. Gomarginify connects to 10 marketplaces, so you can see ad spend profit in real time.
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Step 2: Track Every Cost—Including the Hidden Ones
Don’t just track ad spend. Track every cost—product cost, platform fees, shipping, refunds, and ad spend. For example, if you’re selling a product for $20, your costs might look like this:
- Product cost: $8 - Platform fees: $3.20 - Shipping: $2.50 - Refunds: $0.45 - Ad spend: $4
Total cost: $18.15. That leaves you with $1.85 profit per unit. Not great. But if you’re not tracking these costs, you might think you’re making $2 per unit.
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Step 3: Calculate True Net Profit Per SKU
Once you’ve tracked every cost, calculate the true net profit per SKU. For example, if you’re selling 1,000 units of SKU B07X, your total revenue is $20,000. Subtract your total costs ($18,150), and you’re left with $1,850 profit. That’s $1.85 per unit. Not bad, but it’s not enough. You need to optimize your ad spend to increase that profit.
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Step 4: Optimize Your Ad Spend Based on Profit Data
Now that you know your true net profit per SKU, optimize your ad spend. For example, if SKU B07X is only making $1.85 profit per unit, you might want to reduce ad spend on it and focus on a higher-margin product. Alternatively, you might want to negotiate better shipping rates or reduce refunds. The key is to use your profit data to make data-driven decisions.
FAQ
How do I track ad spend profit if I’m using multiple ad platforms?
Use a tool like Gomarginify. It connects to 10 marketplaces, including Amazon, Shopify, and TikTok Shop. It gives you true net profit per SKU, including ad spend. No more guessing. No more surprises.
What’s the best way to track refunds and returns?
Track refunds and returns per SKU. For example, if you’re selling 1,000 units of SKU B07X and you have a 3% refund rate, you’ve lost $450. That’s real money. Use a tool like Gomarginify to track refunds and returns automatically.
How do I reduce my ad spend without reducing my sales?
Optimize your ad spend based on profit data. For example, if SKU B07X is only making $1.85 profit per unit, reduce ad spend on it and focus on a higher-margin product. Alternatively, negotiate better shipping rates or reduce refunds. The key is to use your profit data to make data-driven decisions.
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