Pillar Guide · Fashion Buying
Fashion Buying: The Complete Industry Guide
Everything you need to understand how fashion buyers work — from range planning and OTB to supplier negotiation, trend analysis, and building a buying career in retail head office.
01 — Overview
What is fashion buying?
Fashion buying is the commercial function responsible for selecting, negotiating, and building the product range a retailer sells to its customers. A buyer's core job is to make the right product available, at the right price, in the right volume, at the right time.
In most retail organisations, buying sits alongside merchandising in what's commonly called the "buying and merchandising" function — often shortened to B&M. The buyer leads on product strategy, supplier relationships, and trend direction; the merchandiser leads on financial planning, stock allocation, and trading.
Industry framing
"The buyer makes the product decision. The merchandiser makes sure the numbers behind it work. Both need each other to succeed."
Fashion buying differs from general retail buying because of its heavy reliance on trend forecasting, seasonal lead times, and supplier development. A fashion buyer might be committing to stock 12–18 months before it hits the shop floor — which means reading market signals accurately is as important as negotiating a good price.
Buying vs. merchandising: the key difference
This distinction matters because the two roles are often confused by people entering the industry. Put simply:
Buyer
Owns the product — what it is, where it comes from, what it costs, and how it fits into the range. Leads supplier and trend work.
Merchandiser
Owns the numbers — how much to buy, how to allocate it across stores, how to trade it in-season. Leads OTB and WSSI management.
In smaller businesses, one person may do both. In large retailers like Next, M&S, or H&M, buying and merchandising are entirely separate departments with their own hierarchies.
02 — Definitions
Key terms every buyer needs to know
Fashion buying comes with its own language. These are the terms you'll encounter constantly in a buying role.
OTB (Open to Buy)
The budget available to purchase new stock in a given period. Calculated as planned sales + planned closing stock − planned opening stock − stock on order.
Range Plan
The structured document outlining every product a buyer intends to select — by category, option count, price architecture, and volume.
Intake
The physical arrival of stock into the warehouse or distribution centre. Buyers track intake dates against trade plans.
Confirmed Margin
The gross margin locked in at point of order — before any markdown. Buyers are typically set a margin target at the start of each season.
Critical Path
The timeline of key milestones from range sign-off through sampling, production, and delivery. Missing a critical path date can delay an entire season.
Sell-Through Rate
The percentage of purchased stock sold at full price. A high sell-through indicates strong product decisions; a low one suggests over-buying or poor trend read.
FOB vs. LDP
FOB (Free on Board) is the cost of goods at the point of shipping. LDP (Landed Duty Paid) includes freight and duty — the true landed cost the retailer pays.
MOQ (Minimum Order Quantity)
The minimum number of units a supplier will produce per style or colourway. MOQs are a critical constraint when building a financially viable range.
Markdown
A price reduction taken to clear slow-moving stock. Markdowns erode margin and are tracked carefully against budget. See our Markdown Calculator.
For a full glossary of retail and buying terms, visit our Retail Math guide.
03 — Process
The fashion buying cycle
Fashion buying operates on a seasonal cycle — typically split into Spring/Summer (SS) and Autumn/Winter (AW) — though fast fashion retailers may run 6–12 micro-seasons per year. Here's how a standard buying cycle runs:
Post-season review
Analyse the previous season's performance. Which styles sold through? What was left over? Where did margin leak? This informs the brief for the next season.
Trend and market research
Buyers attend trade shows (Magic Las Vegas, Première Vision Paris, Melbourne Fashion Festival), review trend forecasting services like WGSN, and conduct competitor shops to understand where the market is heading.
Range building
Working against an OTB budget set by the merchandiser, the buyer builds a range plan — deciding on option count, price architecture, colour palette, and product mix across categories.
Supplier negotiation
Buyers negotiate cost prices, MOQs, lead times, and payment terms with suppliers. Achieving the target confirmed margin is a key outcome of this stage.
Sampling and sign-off
Suppliers submit samples for approval. Buyers review fit, quality, and construction against tech packs. Multiple rounds of amendment are normal before final sign-off.
Order placement
Once samples are approved and prices confirmed, purchase orders are raised. The critical path is locked in, tracking production milestones and intake dates.
In-season trading
Once the range is live, buyers trade the season — monitoring sell-through, identifying winners to chase and poor performers to mark down, and managing repeat orders or cancellations with suppliers.
Key insight
Fast fashion retailers like Zara compress this cycle dramatically — sometimes from concept to floor in 2–3 weeks. Traditional wholesale-based retailers may be working 12–18 months out. Your cycle length shapes everything about how you buy.
04 — Performance
KPIs buyers are measured on
Buyers are held commercially accountable. These are the core metrics used to evaluate buying performance across most retailers:
| KPI | What it measures | Typical target |
|---|---|---|
| Confirmed Margin % | Gross margin locked in at point of order | Set per category — e.g. 60–70% for fashion apparel |
| Sell-Through Rate | % of intake sold at full price | 70–85%+ depending on category |
| Intake Margin | Margin achieved after actuals vs. plan | On or above confirmed margin |
| Option Count vs. Plan | Whether range delivered as planned | Within ±5% of range plan |
| Average Cost Price | Mean cost per unit across the range | At or below ACP target |
| Markdown Rate | % of stock sold at a reduced price | Minimised; budgeted per season |
| Stockturn | How many times stock turns over in a period | Varies widely by category |
Use our Retail Math calculators to work through these metrics with your own numbers. See also: Stockturn Calculator and Markdown Calculator.
05 — Case studies
Buying in practice: real-world examples
Case study 01 — Range concentration risk
Zara (Inditex)
Zara's buying model is built on deliberate range scarcity. Rather than buying deep into one style, their buyers place small, frequent orders across a wide range of options. This keeps sell-through rates high and reduces markdown risk — if a style doesn't perform, limited stock means limited exposure. When a style does perform, a fast repeat order cycle (enabled by their near-shored supply chain in Spain and Portugal) means they can chase winners within 2–3 weeks. The lesson for buyers: concentration risk cuts both ways. Wide, shallow buying limits downside but can also cap upside on bestsellers.
Case study 02 — The cost of a poor trend read
ASOS, 2023
In 2023, ASOS publicly acknowledged significant stock write-downs after over-buying into trends that didn't materialise at the pace expected post-COVID. The company took hundreds of millions in inventory impairments. This is a high-profile example of what happens when buying volume outpaces demand signals — even at scale. The subsequent strategy shift involved tightening OTB, reducing option count, and improving the link between sell-through data and forward order decisions. For buyers: your OTB discipline and your ability to read demand accurately are your two most commercially critical skills.
Case study 03 — Ethical sourcing as a buying decision
Patagonia
Patagonia's buying function operates with environmental and ethical sourcing criteria built into supplier selection — not as an afterthought, but as a primary filter. Buyers work only with suppliers who meet their Supplier Workplace Code of Conduct and material standards (recycled fibres, organic cotton). This increases cost price but supports a premium retail price architecture and a loyal customer base willing to pay for it. The case study illustrates that buying is not just about the lowest FOB cost — it's about the full strategic fit of supplier and product within the brand proposition.
06 — Career paths
Building a buying career in fashion retail
Buying careers follow a structured ladder in most retail organisations. Progression is typically performance-driven and tied to the commercial results of the ranges you manage.
Buying Admin Assistant (BAA)
Entry levelAU$45,000–$55,000
Assistant Buyer
JuniorAU$55,000–$70,000
Buyer
Mid-levelAU$75,000–$100,000
Senior Buyer
SeniorAU$100,000–$130,000
Buying Manager
LeadershipAU$130,000–$160,000+
Head of Buying / GMM
ExecutiveAU$160,000–$250,000+
What skills do fashion buyers need?
Commercial numeracy
Buyers work with margin, OTB, cost prices, and sell-through daily. Comfort with spreadsheets and retail math is non-negotiable.
Trend literacy
The ability to read and interpret trend direction — from macro cultural shifts to micro aesthetic signals — and translate them into product decisions.
Negotiation
Buyers negotiate cost prices, lead times, MOQs, and payment terms. Strong negotiators protect margin and build better supplier partnerships.
Range building
The ability to construct a balanced range — right option count, price architecture, colour story, and category spread — that meets both commercial and customer needs.
Explore full career profiles, day-in-the-life content, and interview tips in our Careers section. Take our Career Quiz to find out if buying is the right path for you.
07 — Tools
Calculators for buyers
Use these free tools to work through the retail math behind buying decisions:
All calculators are free and built specifically for fashion retail. No login required.