Working capital may show up on a balance sheet, but it’s built in operations. Long before it’s measured, it’s already embedded in decisions that reflect when production is scheduled, how supply is structured, how demand uncertainty is managed, and how commercial and supplier risk is allocated. By the time inventory builds or receivables stretch, the outcome is already set. That‘s why many working capital initiatives underdeliver. They start after the fact, responding to a number on a report rather than the operational decisions that created it.
Inventory is often the first lever because it’s the easiest to see. But in most cases, it’s acting as a buffer for underlying constraints: long or inflexible supplier lead times, rigid production schedules, unstable or overcommitted forecasts, and commercial promises made before demand is clear. When those conditions exist, inventory isn’t excess — it’s protection. The business is carrying it because the system can’t absorb uncertainty through any other measure. Reducing inventory without addressing those drivers tends to push the problem elsewhere. Service risk increases. Expediting costs rise. Operational instability follows. And within a quarter or two, the inventory often comes right back because the conditions that created it never changed.
The real driver: When the business is forced to commit
At the core of working capital is a simple dynamic: How early does the business have to commit relative to what it actually knows?
If purchasing, production, and material decisions can be delayed until demand is clearer, less cash gets tied up. If those decisions must be made early because suppliers require long lead commitments, production assets need extended runs to stay efficient, or minimum order quantities prevent smaller buys, then inventory and buffers fill the gap. Working capital grows in the space between what you must decide and what you can confidently know. This is where planning discipline, supplier flexibility, and operating responsiveness converge. And in many portfolio companies, especially those growing quickly or managing significant variability, that gap is wider than it appears.
Why this matters in private equity
In a PE context, working capital is typically addressed during diligence as a benchmark or after close as a source of cash. Both are necessary, but neither tells the full story if working capital is treated as a fixed financial measure instead of an operating outcome that changes as the company changes. That distinction becomes important quickly. You may hit a modeled working capital target at a point in time while still carrying forecast volatility, inflexible sourcing, complex launches, and rigid asset requirements underneath. The number looks right, but the operation continues consuming cash under pressure because the underlying structure hasn’t changed.
Conversely, another company may look inventory-heavy on paper and still have significant room to reduce cash needs if it improves how it plans and responds. Top-performing firms don’t just extract working capital. They redesign the conditions that created it.
Instead of starting with inventory reductions, leading teams focus on the upstream, where working capital is actually created. Below are the areas that matter most.
Planning and scheduling
Production and purchasing decisions often lock earlier than anyone realizes. When decisions are fixed while demand is still moving, inventory ends up protecting the business from changes the plan can’t absorb. How early are production and purchasing decisions locked in? Can those decisions be delayed until demand is clearer? Are buffers being created simply because planning lacks the flexibility to adjust? A more responsive planning process won’t remove uncertainty, but it can significantly reduce how much inventory you need to carry against it.
Supply base and lead time structure
Long lead times limit your options. Minimum order quantities and sourcing constraints limit them further. When suppliers can’t respond fast enough, the business often makes up for it by carrying more inventory. That may protect continuity, but it also ties up cash because the supply network can’t flex when you need it to. The key questions are whether supplier constraints are driving excess inventory and whether the business is buying certainty because it can’t create responsiveness.
Product launches and portfolio complexity
Complexity rarely arrives all at once. It creeps in through new products, added SKUs, promotions, and launch decisions that seem manageable individually but create more variability together than the planning model can absorb. Are forecasts being overcommitted early in the launch cycle? Is SKU proliferation increasing variability without differentiated planning to match? Inventory rises when the operating model can’t keep up with the complexity the business has added.
Contracting and commercial structure
Commercial commitments shape working capital more than many organizations realize. Delivery promises, service expectations, pricing terms, and penalties all affect where risk lands when demand shifts. Who absorbs variability, the company or its suppliers and customers? Do contract terms force early commitments? Are payment terms masking or amplifying underlying inefficiencies? In many organizations, inventory ends up carrying risk that the commercial model can’t absorb on its own.
CapEx decisions and asset strategy
Capital decisions directly shape working capital, though they’re often treated separately. Rigid assets frequently require longer runs, earlier commitments, or higher minimum volumes. As that rigidity increases, inventory tends to also rise because the business needs more protection against downtime, maintenance issues, and throughput risk. Are capital investments increasing rigidity in the operating model? Are maintenance deferrals or reliability issues driving higher safety stock and work-in-process buffers? The more constrained or inflexible the asset base becomes, the more inventory the system requires to operate.
Inventory policy design
Inventory policy still matters, but it works best when it reflects current conditions instead of outdated rules. Are all SKUs planned the same way, regardless of variability, margin, or lead time? Are safety stock and reorder policies aligned to actual risk, or are they based on legacy assumptions no one has revisited? When policy falls behind the operation, it can preserve buffers that no longer serve a purpose.
Sustainable performance means the right operating model
When working capital gets tight, inventory is the first lever most organizations pull, and for good reason. It’s visible, measurable, and often materially overstated. Short-term improvements are still possible and sometimes necessary. Teams can pause buys, tighten approvals, review aged stock, and push targeted reductions through the system to create breathing room. But too often, the response stays purely tactical. The numbers improve for a quarter, and then the same pressure returns. Without addressing the underlying drivers, planning discipline, parameter integrity, supplier alignment, and decision-making cadence, inventory inevitably creeps back. Not because the business failed to act, but because it never fixed the process. Inventory reduction is where you start when cash is constrained. Sustainable performance is what happens when you back it up with the right operating model.
