Your Meta dashboard says 3.4x ROAS. Your bank account says something else. Both are true.

The gap between what your ad platforms report and what your business actually keeps is the single biggest reason DTC brands at $5M to $30M plateau even when their acquisition looks healthy. This post walks through the three layers of measurement that close that gap, and the three numbers your monthly agency report should be showing you.

The three layers of marketing measurement

There are three layers any DTC brand needs to be reading at the same time. Most are reading one.

Layer 1: Platform attributed ROAS. What Meta, Google, TikTok and Pinterest each tell you. The most flattering number because each platform attributes the same conversion through its own model. Add them all up and you get more than 100 percent of your revenue.

Layer 2: Blended ROAS or MER. Total revenue divided by total ad spend across all channels. This number tells you the truth about your acquisition engine in aggregate. It cannot be gamed by attribution model choice. It also cannot tell you which channel is pulling its weight.

Layer 3: Contribution margin per order, by cohort. The actual dollars your business keeps from each transaction after product, shipping, fulfilment, payment and the marketing cost to acquire that order are removed. By cohort means tracked over time so you can see what each month's customer is actually worth.

If your agency is reporting Layer 1 only, you do not have a complete picture. If your agency is reporting Layer 1 and Layer 2, you have most of it. If your agency is reporting all three, you are in the top 5 percent of DTC brands by reporting maturity.

Worked example

For a brand spending £100k a month on paid media with a 60 percent gross margin and a 1.6x repeat rate, the connected number looks roughly like this. Blended ROAS 2.8x. Contribution margin per order 23 percent. New customer payback period 47 days. Without all three, you cannot tell whether scaling spend by 30 percent is a good idea or a margin-destroying one.

Why your agency might not be showing you this

Most agencies optimise for the metric they report on. If they report platform ROAS, they optimise for platform ROAS. The way you get platform ROAS up is to bid harder on people who would have bought anyway and segments where attribution windows are generous. Neither of which grows your business.

The agency that reports blended ROAS and contribution margin is the agency optimising for your business outcome, not their reporting dashboard. The difference matters when you are deciding whether to scale.

We have written about the parallel symptom inside email and retention in The Hidden Cost of Acquisition Without Retention.

What to do this month

Pull your last 90 days of contribution margin per order. If you cannot, your finance setup is the gap, not your marketing.

Take the Meta Ads Profitability Scorecard. 10 minutes, 22 questions, you surface the reporting gaps yourself.

Then read How a 7-Figure DTC Supplements Brand Doubled Repeat Revenue for what the connected motion looks like in practice.

Frequently asked questions

What is a good blended ROAS for DTC?

For brands at $5M to $30M, 2.2x to 3.2x blended is typical for healthy unit economics. Above 3.2x usually means you are under-spending. Below 2.0x usually means margin pressure.

Is MER the same as blended ROAS?

Effectively yes. Marketing efficiency ratio (MER) is total revenue divided by total marketing spend. Blended ROAS is the same calculation framed inside an ad-buying conversation. Same number, different naming convention.

How often should I review contribution margin per order?

Monthly at minimum. Weekly if you are scaling spend aggressively. The number is volatile inside a single week, so do not react to it daily.