# Benchmarks and due-diligence checks that flag a healthy brand
A brand can post 40% revenue growth and still be dying. If that growth came from doubling paid ads and slashing prices, while inventory piles up in the warehouse, you are looking at a business buying revenue it cannot keep. The numbers below are how professionals cut through the story and see the real machine underneath.
This lesson gives you a diligence checklist: the handful of benchmarks that separate a healthy fashion brand from one that is quietly bleeding.
First, scale. The global apparel and footwear market is estimated at roughly 1.7 to 1.8 trillion USD in retail value (industry estimates, as of 2025). The US is the single largest national market, commonly estimated around 350 to 400 billion USD. Europe combined is broadly comparable in size, led by Germany, the UK, France, and Italy.
Growth is modest: low single digits in mature markets. That matters for diligence. In a slow-growth sector, a brand growing fast is either taking share (good) or buying it unsustainably (bad). The benchmarks tell you which.
Inventory turnover measures how many times a company sells and replaces its stock in a year.
> Inventory turns = COGS / Average inventory
Worked example. A brand reports COGS of 60 million USD and average inventory of 15 million USD.
> 60 / 15 = 4 turns per year
Four turns means roughly 90 days of inventory on hand (365 / 4).
What is healthy? It depends on the model:
The red flag: turns falling year over year. That means product is not selling and cash is trapped in unsold stock. In fashion, unsold stock is a decaying asset: it must eventually be marked down, which destroys margin.
Returns are the silent margin killer, especially in DTC and pure ecommerce.
Rough benchmarks (industry estimates, 2025):
Fashion returns run higher than almost any other retail category because of fit and "bracketing" (a shopper buys three sizes intending to keep one).
Why it matters for diligence: a brand quoting only gross sales may hide a 30% return rate. Net revenue is what pays the bills. Always ask for net of returns.
Each return also carries reverse-logistics cost: shipping back, inspection, repackaging, and sometimes writing the item off entirely. A "free returns" policy is a real line item, not a marketing nicety.
Gross marginGross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.View full definition → is where you see whether the product is actually priced and sourced well.
Typical ranges (estimates, vary by segment):
A useful shorthand professionals use is the keystone markup: pricing at roughly 2x cost (a 50% gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.View full definition →). Many brands aim well above this to survive discounting and returns.
Worked example. A jacket costs 40 USD to make (COGS) and retails at 160 USD.
> Gross marginGross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.View full definition → = (160, 40) / 160 = 75%
Looks great. But if 30% of units are returned and the brand later discounts the rest by 40%, the realized margin is far lower. This is why you never trust the sticker-price margin alone. You want realized gross margin after discounts and returns.
This is the truth serum. A brand that only sells when it discounts has no real pricing power.
Two questions:
1. What percentage of sales happen at full price? Healthy premium brands protect a high full-price share. Chronic discounters live below it.
2. How deep are the markdowns? A brand routinely discounting 40% or more before goods clear is signaling it over-produced or mispriced.
The check: ask for a monthly view of average selling price versus full price. If the gap keeps widening, the brand is addicted to promotion. Once shoppers learn to wait for the sale, full price dies. This is exactly what happened to several US department-store house brands over the last decade.
For a solid free overview of how these retail metrics fit together, McKinsey's annual State of Fashion report is the standard reference and is free to read.
Pull it together per unit. For a DTC brand:
> Contribution per unit = Selling price, COGS, returns cost, fulfillment, variable marketing (CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition →)
CAC (Customer Acquisition Cost) is what you spend on marketing to win one customer. If CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → keeps rising while average order value stays flat, the growth engine is getting more expensive to run. In slow-growth fashion, that is a serious warning.
Pair CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → with repeat rate. A brand where most revenue comes from repeat customers is far healthier than one constantly buying first-time buyers who never return.
Knowledge check
1. A fashion brand reports strong revenue growth, but this growth coincides with heavily increased ad spending, aggressive price cuts, and rising warehouse inventory. What does this pattern most likely indicate?
2. Why does a slow-growth sector make fast-growing brands especially important to scrutinize during due diligence?
3. A marketplace prominently advertises a very high GMV figure. Why should an analyst treat this metric with suspicion?
4. Select ALL correct answers about the trade-offs between DTC and wholesale models.
Select all the correct answers.
5. Select ALL correct answers about signals that help distinguish a healthy fashion brand from one that is bleeding.
Select all the correct answers.
Put it into a simple sequence you can run on any fashion brand in an afternoon.
Insist on revenue net of returns and discounts. If someone only shows you GMV or gross sales, that is a tell.
Calculate turns. Then ask for the aging report: how much inventory is over 6 or 12 months old. Old stock will be marked down, so it is a future margin hit sitting on the balance sheet today.
Compare sticker-price gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.View full definition → to realized gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.View full definition →. A big gap means discount dependence.
Look at full-price sell-through over 12 to 24 months. Flat or rising full-price share is a strong positive.
Is growth coming from repeat customers and new products, or from rising ad spend and deeper promotions? Only the first kind compounds.
Is the brand dangerously dependent on one wholesale account or one marketplace? Losing a single major retailer can erase a season overnight.
Diligence in 2026 also means checking sustainability and supply-chain compliance, now a real cost and legal exposure. In the EU, watch the Corporate Sustainability Due Diligence Directive (CSDDD) and rules on textile waste and green claims. A brand making unverified "sustainable" marketing claims faces greenwashing enforcement risk. This is now a diligence item, not a nice-to-have.