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How to Record Ad Spend So Your Profit Numbers Are Actually Accurate

8 min read

Last month, SKU B07X lost 12% margin. You thought it was profitable. Why? Because you weren’t tracking ad spend per SKU. You were averaging it. That’s a mistake.

Here’s the thing: ad spend isn’t uniform. SKU B07X had a $3.20 referral fee, but your ads cost $5.80 per sale. You didn’t know because you weren’t tracking it. This post will show you how to fix that.

Why Tracking Ad Spend Matters

Ad spend is a variable cost. It changes. If you’re not tracking it per SKU, you’re flying blind.

Take SKU B07X. You thought it was profitable at $10.00 margin. But ads cost $5.80 per sale. That’s a $5.80 hit you weren’t accounting for.

We switched fulfillment in March. Our margins improved. But we still had blind spots. Ad spend was one of them.

Here’s the truth: if you’re not tracking ad spend per SKU, you’re not tracking profit. You’re tracking guesses.

How to Track Ad Spend Accurately

You need a system. It doesn’t have to be complex. It just has to be accurate.

Start with your ad platforms. Amazon, Shopify, TikTok Shop, Temu, eBay, Etsy, Walmart, AliExpress, Shopee, Lazada. Each has its own reporting. Export them.

Next, match ad spend to SKUs. This is where most sellers fail. They average it. Don’t. Track it per SKU.

Finally, integrate it into your profit tracking. GoMarginify does this automatically. But if you’re doing it manually, use a spreadsheet. Track revenue, product cost, platform fees, shipping, refunds, and ad spend.

Here’s the key: accuracy. If you’re not tracking ad spend per SKU, you’re not tracking profit.

The Impact of Accurate Ad Spend Tracking

Accurate ad spend tracking changes everything.

Take SKU B07X. You thought it was profitable. It wasn’t. But now you know. You can adjust.

We switched fulfillment in March. Our margins improved. But we still had blind spots. Ad spend was one of them.

Here’s the truth: if you’re not tracking ad spend per SKU, you’re not tracking profit. You’re tracking guesses.

Accurate ad spend tracking gives you clarity. It shows you where you’re making money. And where you’re not.

It’s not just about numbers. It’s about decisions. With accurate ad spend tracking, you make better decisions. You cut losing SKUs. You invest in winners. You grow.

Step by step

  1. 1

    Step 1: Export Ad Spend Data

    Start with your ad platforms. Amazon, Shopify, TikTok Shop, Temu, eBay, Etsy, Walmart, AliExpress, Shopee, Lazada. Each has its own reporting. Export them.

    Example: For Amazon, go to Advertising > Reports > Campaign Manager. Export the data.

    Do this for all platforms. You need a complete picture.

  2. 2

    Step 2: Match Ad Spend to SKUs

    This is where most sellers fail. They average it. Don’t. Track it per SKU.

    Example: SKU B07X had $5.80 ad spend per sale. But you were averaging it at $3.20. That’s a $2.60 difference per sale.

    Here’s how to do it:

    1. Open your ad spend data.

    2. Match it to SKUs. Use SKU names or ASINs.

    3. Calculate ad spend per SKU.

    4. Record it.

  3. 3

    Step 3: Integrate Ad Spend into Profit Tracking

    Now, integrate ad spend into your profit tracking. GoMarginify does this automatically. But if you’re doing it manually, use a spreadsheet.

    Example:

    1. Track revenue.

    2. Subtract product cost.

    3. Subtract platform fees.

    4. Subtract shipping.

    5. Subtract refunds.

    6. Subtract ad spend.

    This gives you true net profit per SKU.

  4. 4

    Step 4: Analyze and Adjust

    Now, analyze. Look for losing SKUs. Look for low margins. Look for high refund rates. Look for missing costs.

    Example: SKU B07X lost 12% margin. You thought it was profitable. But now you know. You can adjust.

    Here’s how:

    1. Cut losing SKUs.

    2. Invest in winners.

    3. Optimize ads.

    4. Improve fulfillment.

    5. Reduce refunds.

    This is how you grow.

FAQ

How often should I track ad spend?

Daily. Ad spend changes daily. If you’re not tracking it daily, you’re not tracking it accurately.

Can I use a spreadsheet to track ad spend?

Yes. But it’s manual. GoMarginify does it automatically. It’s more accurate. And it saves time.

What if I’m selling on multiple platforms?

Export ad spend data from each platform. Match it to SKUs. Integrate it into your profit tracking. GoMarginify connects to 10 marketplaces. It does this automatically.

Track your real profit across every marketplace

Learn how to accurately record ad spend to ensure your profit numbers reflect reality. Practical tips and examples for sellers.

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