Inventory Turnover Benchmarks by Industry
| Industry | Healthy Inventory Turns/Year | Days Inventory Outstanding |
|---|
| Grocery / Fresh Food | 14-25 | 15-26 days |
| Fast Fashion | 8-12 | 30-45 days |
| Consumer Electronics | 6-8 | 45-60 days |
| Auto Parts | 4-6 | 60-90 days |
| Furniture / Home | 3-5 | 73-120 days |
| Industrial / B2B | 4-7 | 52-90 days |
| Luxury Goods | 2-4 | 90-180 days |
Rule of thumb: If your DIO (Days Inventory Outstanding) is more than 1.5x your industry benchmark, you have a working capital problem masquerading as healthy stock.
In theory, an inventory is a safe asset; it makes the balance sheet grow. In practice, it is cash spent and only earned back if it sells quickly.
Why this is a trap:
– Cash goes out today (purchase), revenue comes later.
– In between, you still pay storage, shipping, ads, returns, discounts.
Thus, one can have growing revenues, but still be cash-starved.
Quick test:
Months of stock = Inventory at cost / Average monthly COGS.
Sitting on 6-9 months’ worth? That’s not being ‘prepared’ – it’s being a hostage of cash.
Hidden cost:
Slow stock is always “taxed” by markdowns, increased ad costs, more returns, and write-offs. The actual margin is always worse than it looks.
Simple Rules to Stay Safe:
1) Determine a stock cap, typically 2 to 3 months.
2) Split SKUs: Heroes (keep), Stable (strict reorder), Risky (small batches).
3) Prioritize reordering based on sell-through at full price, not optimism.
4) If the SKU needs discounting to move, don’t order it.
Revenue is vanity. Inventory is commitment. Cash is survival.
FAQ
How do I calculate inventory turnover?
Inventory Turnover = Cost of Goods Sold / Average Inventory. Example: $2M COGS / $400K average inventory = 5 turns per year, meaning each unit sits ~73 days before selling. Higher is generally better, but too high means stockouts and lost sales.
When does inventory become a liability, not an asset?
When holding costs (storage, insurance, obsolescence, capital cost) exceed gross margin on the eventual sale. Industry rule: if inventory sits over 12 months, write-down value is typically 50-80%. Slow-moving SKUs older than 18 months should be treated as scrap, not stock.
What’s a good cash conversion cycle for SMBs?
CCC = Days Inventory Outstanding + Days Sales Outstanding – Days Payable Outstanding. Best-in-class SMBs target a negative CCC (collect from customers before paying suppliers – Amazon’s model). Realistic SMB target: under 60 days. Above 90 days, you’re effectively financing your suppliers and customers out of your own bank account.
How do I free up cash stuck in inventory?
Four levers: (1) tighter SKU rationalization – kill the bottom 20% of SKUs by margin contribution, (2) shorter supplier terms or VMI (vendor-managed inventory), (3) demand-driven reorder points instead of fixed quantities, (4) aggressive markdowns on aged stock to recover at least the COGS. Most SMBs can release 15-30% of working capital this way.
Should I use FIFO or LIFO for valuation?
For SMBs in inflationary environments, LIFO reduces taxable income (later, higher-cost inventory sells first). FIFO usually produces higher reported profit and book value, which matters for fundraising and exits. U.S. LIFO is allowed but uncommon below $20M; rest of world is FIFO by IFRS. Pick one and document it; switching methods triggers tax and audit complexity.
