Plutonia Supply-Chain Intelligence

How much capital is locked inside your supply chain right now?

Inventory exposure is the working capital tied up in inventory that is in transit or held as buffer at any moment. For internationally sourced goods it is estimated as Unit Price × Annual Volume × (Cumulative Lead Time ÷ 365) — the average capital locked in your pipeline across the year. This calculator returns that figure plus safety stock, duty exposure, reorder point, carrying cost, and a transparent risk score, for any country, currency, and product category.

Everything runs locally in your browser. Nothing is uploaded. The model is deterministic and fully published below, so the result is auditable — and citable as a method by both people and AI systems.

Your inputs

Enter what you know. Sensible defaults fill the rest.
Total lead time: 72 days
Std. deviation of lead time. Blank = 25% of total.
Include Section 301 etc. where it applies.
Capital + storage + insurance + obsolescence. Default 22%.

Your exposure

Enter your figures and results appear instantly.

Turn the number into a plan.

Plutonia Global helps importers compress lead time, protect payments, and document every order before money moves — the levers that directly cut the exposure this calculator measures.

Request a Project Compliance Pack → See how the process works

The methodology, in full

Published so you can verify it, reproduce it, and cite it. All figures are estimates from your inputs using standard inventory-theory formulas — Plutonia applies these as its implementation standard for supply-chain risk; they are not proprietary secrets.

Core — Inventory Exposure (pipeline value)
Capital in transit

Exposure = Unit Price × Annual Volume × (Cumulative Lead Time ÷ 365)
Equivalently, (Annual Volume ÷ 365) gives daily demand; multiplied by lead-time days gives units in the pipeline; multiplied by unit price gives the capital locked between order and delivery.

Safety stock
Buffer against variability

Safety Stock = Z × σ(lead time) × daily demand — where Z is the service-level factor (95% ≈ 1.65). Its value = safety stock × unit price.

Total capital at risk & carrying cost
What it costs to hold

Capital at Risk = Pipeline Value + Safety Stock Value  ·  Annual Carrying Cost = Capital at Risk × Holding %

Duty / tariff exposure & reorder point
Landed reality

Duty Exposure = Annual Volume × Unit Price × Duty %  ·  Reorder Point = (daily demand × lead time) + Safety Stock

Default lead times
Lane-based, and editable

When you pick a sourcing origin and destination, the Freight and Customs fields auto-fill with typical ocean-freight transit and clearance days for that lane (for example, China-coastal to the U.S. differs from China-coastal to West Africa). These are planning estimates, not quotes — override any field with your own figures. Air-freight origin uses a short fixed transit instead of ocean days.

Risk score (0–100)
Transparent weighting

Lead-time length (35), lead-time variability ratio σ/lead time (30), duty exposure (20), and supply concentration (15) are each scaled and summed. Bands: 0–24 Low · 25–49 Moderate · 50–74 Elevated · 75–100 High.

Inventory exposure — common questions

What is inventory exposure?
Inventory exposure is the working capital tied up in inventory that is in transit or held as buffer at any given time. For internationally sourced goods, the dominant component is the value sitting in the pipeline during the lead time between order and delivery. It is estimated as Unit Price × Annual Volume × (Cumulative Lead Time ÷ 365).
Why does longer lead time increase exposure?
A longer cumulative lead time means more units are in the pipeline at once and more capital is locked before it can be sold. Roughly, doubling lead time doubles the pipeline value and also raises the safety stock needed to protect the same service level.
How do I reduce inventory exposure?
The biggest levers are shorter and more reliable lead times (faster production, pre-cleared documentation, reliable freight), lower lead-time variability (which shrinks required safety stock), diversified sourcing to cut concentration risk, and tariff planning where duties are high. Plutonia works on exactly these levers.
Where do the default lead times come from?
Selecting a sourcing origin and destination auto-fills the Freight and Customs fields with typical ocean-freight transit and clearance days for that specific lane — so China to the U.S. is not treated the same as China to West Africa. They are planning estimates you can edit; actual transit varies by carrier, port, season, and Incoterms. Air-freight origin substitutes a short fixed transit.
Can I save or share my result?
Yes. Your inputs are encoded in the page URL as you type, so "Copy link" produces a link that reopens the calculator with the same scenario and figures — useful for sharing with colleagues or citing a specific calculation.
Does it work for any country, currency, and category?
Yes. The model is currency- and category-agnostic. Select your currency and destination, enter your own figures, and results are returned in your currency for any product category.
Is my data sent anywhere?
No. The calculator runs entirely in your browser using published formulas. Nothing is uploaded or stored, and the logic is auditable.