Your 4.8× ROAS Is Funding Your Competitor's Growth

Your Meta dashboard says your ROAS is 4.8×. Your bank account disagrees.

That 4.8× includes view-through conversions from people who saw your ad and would have bought anyway. It includes customers who were already on your site when the ad was served. It includes sales that Google, TikTok, and email are also claiming credit for.

How platform ROAS inflates your real return on ad spend

Your true blended ROAS — total revenue divided by total ad spend, measured against bank-cleared receipts — is closer to 2.1×.

The gap between 4.8× and 2.1× isn't a rounding error. On a £15K monthly ad spend, it's the difference between thinking you're generating £72K in revenue and actually generating £31.5K. That's £40K in phantom revenue that only exists inside Meta's attribution model.

Here's why this matters beyond the maths. When you believe your ROAS is 4.8×, you scale. You increase budget because the numbers say it's working. You hire based on projected growth that's built on inflated returns. You make inventory commitments against revenue that was never real.

Calculating true ROAS after COGS, returns and fulfilment

Your competitor, meanwhile, is measuring blended ROAS. They know their real number is 2.3×. They're not scaling into a fantasy. They're making decisions based on what actually hits their bank account. While you're chasing a metric that doesn't exist, they're building on one that does.

That's the uncomfortable truth: your 4.8× ROAS isn't making you money. It's making Meta money. And the longer you optimise against a platform-reported number instead of a bank-reconciled one, the more of your budget funds their growth instead of yours.

The fix starts with one number: total ad spend across all platforms divided by total bank-cleared revenue. That's your real ROAS. Everything else is marketing.

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