For many CPG founders, inventory feels like progress. You’ve manufactured a product, filled a warehouse, and prepared for growth.
But here’s the reality. Inventory is not revenue. It’s cash that hasn’t returned yet.
Days Inventory Outstanding, or DIO, is the metric that reveals how long your cash is sitting on shelves instead of flowing back into your business. If you don’t understand it, you’re likely underestimating how much capital your operations actually consume.
This is why inventory discipline isn’t just an operations concern. It’s financial infrastructure.
Days Inventory Outstanding measures the average number of days it takes for a company to sell through its inventory.
DIO = (Average Inventory ÷ Cost of Goods Sold) × Number of Days
Most companies calculate it over a 365-day period.
DIO = (500,000 ÷ 1,000,000) × 365 = 182.5 days
This means it takes about 6 months to turn inventory into sales.
DIO answers a straightforward but critical question: How long is your cash locked in inventory before you get it back?
For CPG brands, that timeline includes:
When DIO is high, it signals friction somewhere in that chain.
Cash flow pressure in CPG businesses rarely comes from one big mistake. It usually comes from slow-moving inventory that quietly accumulates.
Here’s how DIO impacts your cash position:
Every unit sitting in a warehouse represents money that can’t be used elsewhere.
That affects your ability to:
If your inventory takes too long to sell, you have to fund new production before the previous batch has converted to cash.
That creates a cycle where growth increases your cash burden instead of relieving it.
Slow inventory often leads to:
High DIO doesn’t just delay revenue. It reduces it.
There’s no universal benchmark, but context matters.
What matters more than the number itself is alignment between:
A founder with a 120-day DIO and strong margins might be in a better position than one with a 60-day DIO but constant stockouts.
Most DIO problems are not caused by one decision. They’re the result of small misalignments across the business.
Founders often produce in larger batches to reduce per-unit costs. But if demand doesn’t match, inventory lingers.
Without reliable demand forecasting, brands either overstock or miss key sales windows.
Too many SKUs dilute demand across products, slowing movement across the entire catalog.
Selling into retail doesn’t mean sell-through is happening. Inventory can sit in stores longer than expected.
Long lead times force brands to hold more inventory as a buffer, increasing DIO.
Reducing DIO isn’t about cutting inventory blindly. It’s about aligning operations with actual demand.
Use real sales data, not optimistic projections.
Smaller, more frequent production runs often outperform large batches.
Yes, per-unit costs may increase slightly. But improved cash flow usually outweighs that difference.
Every SKU adds complexity.
Evaluate:
Reducing underperforming SKUs can improve overall inventory turnover.
Sales, marketing, and operations must operate from the same data.
Misalignment leads to:
Retail orders don’t equal demand.
Track:
This helps identify where inventory is actually getting stuck.
DIO doesn’t exist in isolation. It works alongside other key metrics.
This is the inverse of DIO in many ways.
Measures how long it takes to collect payment after a sale.
Even if you sell inventory quickly, slow receivables can still delay cash.
Measures how long you take to pay suppliers.
Balancing DIO, DSO, and DPO determines your overall cash conversion cycle.
DIO is not just a finance metric. It’s a reflection of how well your business operates across functions.
A healthy DIO suggests:
An unhealthy DIO usually signals gaps in one or more of those areas.
For founders, this is where the real opportunity lies.
You don’t need to overhaul your entire business to improve cash flow. Often, you need better visibility and tighter coordination.
Not every brand needs to optimize DIO immediately. But there are clear signals when it becomes urgent:
If any of these sound familiar, DIO isn’t just a metric to monitor. It’s a constraint to address.
Inventory can look like progress, but without discipline, it becomes a silent drain on your business.
Days Inventory Outstanding gives you a clear, measurable way to understand how efficiently your cash is moving through your operations.
For CPG founders, improving DIO is one of the most practical ways to unlock working capital, reduce risk, and build a more resilient business.
It’s not about moving faster at all costs. It’s about moving with precision.
Most founders don’t struggle because they lack demand. They struggle because their cash is tied up in operations they can’t clearly see.
If DIO is higher than expected or difficult to track, it’s usually not just an inventory issue. It’s a visibility and execution gap across finance, operations, and day-to-day workflows.
That’s where the right support makes a measurable difference.
BELAY helps growing CPG brands bring structure to the financial and operational side of the business with:
You don’t need more complexity. You need clearer numbers and tighter execution.
If you’re ready to understand where your cash is going and how to get it moving again, schedule a call. BELAY can help.