Fashion founders often ask one question first: “What ROAS are we getting?”
It is an important question, but it is not enough.
A fashion brand can have high ROAS and still lose money. Another brand can have moderate ROAS and still scale profitably because AOV, gross margin, repeat purchase, and new customer quality are strong.
Before increasing ad spend, apparel, ethnic wear, and footwear brands need a profit-first measurement system.
ROAS means return on ad spend.
If you spend ₹1,00,000 and generate ₹4,00,000 in attributed revenue, your ROAS is 4x.
ROAS is useful for campaign-level efficiency, but it has limitations. It does not tell you gross margin. It does not show returns. It may over-credit platforms. It may hide whether the sale came from a new or returning customer. It may look strong because branded demand is high.
MER means marketing efficiency ratio.
MER = total revenue divided by total marketing spend.
For example, if your total online revenue is ₹50,00,000 and total marketing spend is ₹10,00,000, your MER is 5x.
MER is useful because it shows blended business efficiency, not only platform-reported performance. For fashion brands running Meta, Google, marketplaces, influencer activity, and retention campaigns, MER gives a cleaner founder-level view.
ACOS means advertising cost of sales.
ACOS = ad spend divided by ad-generated revenue.
A 4x ROAS equals 25% ACOS. AdYogi’s profit-first optimisation blog also explains ACOS as the inverse of ROAS and uses it as a performance threshold for automated rules.
ACOS is especially useful for marketplace and catalog-level decisions because it helps identify whether a product can afford paid promotion.
A 6x ROAS can be bad if:
This is common in fashion because sizes, returns, discounts, and inventory liquidation complicate the economics.
Use these six metrics before scaling.
Useful for campaign optimisation, but not the final truth.
Useful for founder-level business efficiency.
Shows how much you are paying to acquire a new buyer.
Low AOV makes paid acquisition harder. Increasing AOV can improve profitability faster than reducing CPC.
Different products deserve different CAC limits.
A campaign that sells high-return products may look good in Ads Manager but bad in the bank account.
Fashion brands should define stop-loss rules at product, ad, and campaign level.
For example:
Pause a product if it spends ₹2,000 without add-to-cart. Pause a product if ACOS crosses 45% after 7 days. Pause an ad if CTR is below account benchmark and CPC is rising. Pause an ad set if CAC exceeds target by 50% after enough data. Exclude products where only odd sizes are available.
AdYogi states that its stop-loss system can monitor campaigns, ad sets, ads, and products against ACOS or conversion thresholds, and cites cases where stop-loss saved up to 25% of monthly ad spend for Aza Fashion and helped Libas manage SKU-level thresholds across a 5,000+ SKU ethnic fashion catalog.
Before increasing spend, improve AOV through:
One AdYogi fashion apparel case reported that customised checkout offers such as Buy 1 Get 1 and Buy 1 Get 2 helped improve cart size, and the final result included a 25% AOV increase.
Every fashion brand should review:
This is how you prevent “scaling” from becoming expensive revenue.
No. ROAS is useful, but brands should also track MER, CAC, AOV, gross margin, returns, and contribution margin.
There is no universal number. A profitable ROAS depends on AOV, margin, repeat purchase, return rate, discounts, and operating costs.
Early-stage brands may optimise for learning and acquisition, but scaling brands must optimise for contribution margin and profitable growth.