ROAS Was 8.6x. Here is the Number We Actually Reported.
A client's Google Ads hit 8.6x ROAS this month. We did not report the 8.6. We reported £28.69 of first-order contribution per new customer, because that is the number that tells you whether an account scales. ROAS is pre-margin, pre-returns and blends new with returning. First-order contribution is the business.
Strip everything back to the number that pays the business
Strip the VAT. Strip the returns. Take out COGS. Take out ad spend. What is left is contribution margin, and contribution is what pays wages, rent and tax. Revenue does not.
For every £1 going into Google this month, about £6.19 came back as net contribution. Not revenue. Not a ROAS multiple. Contribution, after the media was paid for.
But the number we actually care about is further down.
First-order contribution per new customer
Just under half of that Google revenue came from new customers. Roughly 4,600 of them this month, at a new-customer acquisition cost of £11.63 each.
Run the same maths on new-customer revenue alone, with margin applied and CAC stripped, and it is about £28.69 of contribution per new customer on the first order.
That is the line that matters.
This account is first-order profitable on acquisition. Before a single repeat purchase. Before any LTV story. The customer pays for themselves on day one, and everything they buy after that is upside.
Most accounts cannot tell you this. They can tell you the ROAS. Ask what a new customer costs and what they are worth on the first order, and it goes quiet.
8.6x ROAS is the headline. £28.69 first-order contribution is the business. One of those tells you whether you have got something that scales. It is not the one everyone reports.
Why ROAS is the wrong headline
ROAS, return on ad spend, divides revenue by ad spend. It is the default success metric in Google Ads because it is the default field in every report Google ships. That does not make it the right metric for a business.
Three structural problems with leading on ROAS:
It is pre-margin
A £100 sale at 5% margin and a £100 sale at 80% margin produce the same ROAS. They produce wildly different business outcomes. ROAS hides margin entirely.
It is pre-returns
Returned orders are still counted as revenue in ROAS reports unless you manually correct for them. For categories with high return rates, especially apparel, ROAS systematically overstates account health.
It blends new and returning customers
Returning customers cost less to acquire and convert at higher rates. Blended ROAS is a flattering average that hides whether you can actually grow the business.
An 8.6x ROAS sounds outstanding. On a low-margin product with a 30% return rate and 80% of revenue coming from existing customers, it might be barely breaking even on new-customer acquisition.
What "first-order profitability" actually means
A new customer is first-order profitable on acquisition when the contribution from their first purchase exceeds the cost of acquiring them.
In numbers: if your CAC is £11.63 and your contribution per new customer on the first order is £28.69, you have made £17.06 of margin available to the business on day one. Before that customer has bought anything else. Before any retention spend. Before any LTV assumption is required.
That is a fundamentally different account to one running at a 5x blended ROAS with new-customer acquisition losing £5 per order on the first purchase. The second account might still work if LTV stacks up. But the first account scales on day-one economics. The risk profile is not comparable.
For DTC brands in the £500k to £10M revenue band, first-order profitability is the single most important metric to know about a Google Ads account. It is also the metric most agencies do not report.
How to calculate first-order contribution per new customer
Five steps. Most of them are subtraction.
Pull new-customer revenue from Google Ads
Performance Max and Search both report new-customer acquisition value natively if you have set up the new customer acquisition goal. If you have not, set it up today.
Strip VAT
Divide by 1.20 if your products are standard-rated in the UK. Skip this if your ROAS reporting is already net of VAT (it should be, via a custom conversion value).
Strip returns
Apply your category's actual return rate. Not an industry average. Pull the last 90 days from your store backend.
Apply COGS
Use the true gross margin per order, not the catalogue blended margin, which is usually inflated by full-price hero SKUs that do not dominate new-customer baskets.
Strip CAC
Divide total Google ad spend by new customers acquired. That is your CAC. Subtract it. What is left is your first-order contribution per new customer.
If the number is positive, the account is first-order profitable. If it is negative, you are funding new customer acquisition out of repeat-purchase revenue, which can still work, but the LTV assumption needs to hold for the business to scale.
What to report instead of blended ROAS
For every JudeLuxe client we report four numbers monthly.
New-customer ROAS
Separates the actual growth signal from the existing-customer noise.
First-order contribution per new customer
The day-one profitability of acquisition.
CAC
The absolute cost of bringing a new customer in.
POAS
Profit on ad spend, blended across the account.
ROAS still appears on the report. It just is not the headline.
Frequently asked questions
What is the difference between ROAS and contribution margin?
ROAS (return on ad spend) is revenue divided by ad spend. Contribution margin is what is left after stripping VAT, returns, cost of goods sold, and ad spend from that revenue. ROAS is a top-line ratio. Contribution margin is the closest meaningful approximation to profit on the account before fixed overheads like salaries, rent and tax.
How do you calculate first-order profit in Google Ads?
Take new-customer revenue from Google Ads. Strip VAT. Strip returns at the category's actual return rate. Apply true gross margin. Strip CAC (total Google ad spend divided by new customers acquired). What is left is first-order contribution per new customer.
Is ROAS a misleading metric?
ROAS is not misleading when used correctly. It becomes misleading when it is used as a single success metric without context. ROAS does not account for margin, returns, or the split between new and returning customers. Reporting blended ROAS alone can make a marginally profitable account look outstanding, and a structurally strong account look weak.
What is POAS in Google Ads?
POAS stands for profit on ad spend. It is calculated by dividing profit (contribution margin, after VAT, returns and COGS) by ad spend. A POAS of 1.0 means the account is breaking even on contribution. A POAS above 1.0 means it is generating contribution beyond what the ad spend itself recovers.
Should agencies lead with ROAS or POAS?
For ecommerce accounts, agencies should lead with POAS, new-customer ROAS, CAC and first-order contribution. ROAS can still appear on reports but should not be the headline metric. Founders, CMOs and finance leaders make better decisions when reporting is anchored on profitability and acquisition economics rather than top-line revenue ratios.
What is a good first-order contribution per new customer?
There is no universal benchmark. It depends entirely on the category, AOV, gross margin and the brand's repeat purchase rate. The useful comparison is internal: track first-order contribution over time, segment by campaign type and audience, and use the trend to decide where to scale spend. Any agency quoting a 'good' benchmark without seeing the P&L should be treated with suspicion.
How we report for JudeLuxe clients
Every JudeLuxe client gets the four headline numbers above on a monthly cadence, with new-customer cohorts tracked over 30, 60 and 90-day windows to validate LTV assumptions against actual repeat behaviour. If you want a second opinion on what your Google Ads account is actually doing under the ROAS, get in touch.
For more on how we approach DTC Google Ads, see our work on Google Shopping, Performance Max, and our broader approach to retained Google Ads management.
Want to see your first-order contribution number?
We will run new-customer ROAS, CAC, POAS and first-order contribution per new customer against your last 90 days of Google Ads data. Honest read, no obligation, useful whether you work with us or not.
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