What Is Inventory Turnover and Why Should You Care
Inventory turnover ratio tells you how many times your entire stock is sold and replaced over a given period, typically a year. It is the single most important metric for understanding whether your inventory is working for you or against you.
A high turnover ratio means your capital is cycling efficiently — you are buying stock, selling it quickly, and reinvesting the proceeds into new stock. A low turnover ratio means your money is sitting in your warehouse instead of generating sales. For an Indian fashion brand with limited working capital, this distinction can determine whether you survive and grow or stagnate under the weight of unsold inventory.
How to Calculate Inventory Turnover
The formula is straightforward:
Inventory Turnover Ratio = Cost of Goods Sold (COGS) / Average Inventory Value
Let us work through an example for a fashion brand doing ₹8 Crore in annual revenue:
- Annual Revenue: ₹8,00,00,000
- Gross Margin: 55% (typical for an Indian fashion brand)
- COGS: ₹3,60,00,000 (₹8 Crore x 45%)
- Opening Inventory (April 1): ₹1,20,00,000
- Closing Inventory (March 31): ₹80,00,000
- Average Inventory: ₹1,00,00,000
- Inventory Turnover: 3.6x
This means the brand sells through and replaces its entire inventory 3.6 times per year, or roughly once every 100 days.
Days Sales of Inventory (DSI)
A more intuitive way to express the same metric is Days Sales of Inventory:
DSI = 365 / Inventory Turnover Ratio
In our example, DSI = 365 / 3.6 = approximately 101 days. This means, on average, it takes 101 days from when a garment enters your warehouse to when it is sold. For fashion, where trends shift quickly and seasonality is sharp, 101 days is on the slower side.
Industry Benchmarks for Fashion
Inventory turnover varies significantly by fashion segment. Here are realistic benchmarks for Indian fashion brands:
- Fast fashion / trend-driven: 6–10x turnover (36–60 days DSI). Think Zara-style rapid production and quick sell-through.
- Contemporary / D2C brands: 4–6x turnover (60–90 days DSI). Most Indian D2C brands should target this range.
- Premium / designer: 2–4x turnover (90–180 days DSI). Higher price points and longer sales cycles are expected.
- Luxury / couture: 1–2x turnover (180–365 days DSI). Made-to-order and high-value pieces have inherently lower turnover.
- Ethnic and occasion wear: 3–5x turnover (73–120 days DSI). Seasonal demand patterns create natural peaks and troughs.
If your turnover ratio is below the benchmark for your segment, you are carrying too much inventory relative to your sales. Every point of turnover improvement frees up working capital that can be deployed elsewhere in your business.
The Real Cost of Slow-Moving Inventory
Low inventory turnover is not just a vanity metric problem. It has tangible financial consequences that compound over time.
Carrying Costs
Every unit of inventory in your warehouse costs money to hold. For Indian fashion brands, carrying costs typically include:
- Warehousing: ₹15–₹40 per square foot per month depending on the city (higher in Mumbai and Delhi, lower in tier-2 cities)
- Insurance: 0.5–1% of inventory value annually
- Depreciation: Fashion inventory loses value rapidly. A garment that does not sell this season might need a 30–50% markdown next season.
- Opportunity cost: Money tied up in inventory earns 0%. The same money in a business bank account or deployed for marketing could generate returns.
- Handling and management: Staff time for counting, organising, and maintaining inventory
In total, carrying costs for fashion inventory typically run 20–30% of the inventory value per year. If you are carrying ₹1 Crore in average inventory, that is ₹20–₹30 Lakh per year just to hold it.
Strategies to Improve Inventory Turnover
1. Reduce Lead Times
Shorter lead times mean you can order smaller quantities more frequently, reducing the amount of stock you need to hold at any given time. Work with suppliers and manufacturers to compress timelines.
- Maintain standing relationships with fabric suppliers for faster delivery
- Keep a buffer stock of your most-used fabrics at your CMT unit
- Use local manufacturers for quick-response replenishment (even if per-unit cost is slightly higher)
2. Improve Demand Forecasting
Better forecasting means buying closer to actual demand, which reduces both stockouts and excess inventory. Use historical sales data at the variant level, factor in trends, and apply the 70/30 rule for new styles.
3. Implement Faster Markdown Cycles
Do not hold on to slow-moving inventory hoping it will sell at full price. A progressive markdown strategy that starts at week 4 for underperformers turns slow stock into cash that can be reinvested in faster-moving styles.
4. Rationalise Your Assortment
Fewer, better-curated styles with deeper stock in proven sizes and colours will turn faster than a wide but shallow assortment. Apply the 80/20 rule: identify the 20% of styles that generate 80% of revenue and invest disproportionately in those.
5. Optimise Across Channels
Stock that is not moving on your website might sell quickly on a marketplace, or vice versa. Regularly review channel-level sell-through and reallocate inventory to where it moves fastest.
Tracking Turnover Over Time
Inventory turnover is not a number you check once. Track it monthly and compare against your own historical performance, not just industry benchmarks. Plot it alongside revenue growth to ensure you are growing sales without proportionally growing inventory.
- Set quarterly targets for inventory turnover improvement
- Calculate turnover by category — your accessories line might turn 8x while your formal wear turns 2x
- Include turnover in your monthly business review meetings
- Tie buying team incentives partly to turnover performance, not just sales
For Indian fashion brands in the ₹1 Crore to ₹50 Crore range, improving inventory turnover by even one point can free up ₹15–₹40 Lakh in working capital. That is money you can invest in new designs, marketing, or expanding to new channels — all of which drive growth far more effectively than garments sitting in a warehouse.