Decision Systems

Cost-to-Serve Diagnostic.

A route-level profitability diagnostic — built for the customer conversation. The output is not a cost report. It is a ranked view of every supply chain route you run, showing exactly where margin is leaking and what to do about it.

Why this exists

Most businesses believe they know which customers make them money. They are usually wrong.

Standard reporting shows revenue and cost of goods. It does not show what it costs to serve a specific customer through a specific route — the freight, the handling, the service requirements, the commercial deductions, the returns. Those costs are real, but they sit in averages or in supplier contracts where nobody can see them. Somewhere between 20% and 40% of customers are typically unprofitable, and most businesses cannot say which ones.

The Cost-to-Serve Diagnostic closes that gap. It assigns every cost to the place it is actually incurred, traces each route end to end, and ranks them by what they genuinely contribute. Where a cost is buried inside a contract rather than measured, the model captures it as a directional allocation and says so — because a visible estimate is worth more than an exact number nobody can find.

A directional cost that is visible is more useful than an exact cost that is hiding inside a supplier invoice.
The Diagnostic

Three modules. Eleven steps. One ranked answer.

The modules run in sequence. Commercial context establishes what the business currently sees. Cost architecture builds the picture layer by layer. Commercial intelligence tests whether any of it changes a decision.

Module 01

Commercial Context

What the business currently sees — and what it does not. The baseline before any cost is measured.

1A

Profitability Visibility

Can the business see true net margin by customer, channel, or route below the gross margin line? Examines P&L structure, allocation method, and whether Finance and Supply Chain are working from the same numbers. Where they disagree is itself a finding.

1B

Order Profile & Complexity

Filling a 500-unit pallet order and a 3-unit emergency order do not cost the same. Maps order frequency, size distribution, exception handling, and the degree to which ordering behaviour creates cost that operations absorbs silently.

Module 02

Cost Architecture

The analytical core. Five sub-modules build the cost picture in sequence — gate check first, then each layer.

2A
Gate

Data Integrity & Readiness

Runs first, always. Assesses whether the underlying data is credible enough to use. Unreliable inputs are flagged, not excluded.

2B

Logistics & Distribution

Outbound freight, DC handling, pick and pack, storage, last-mile delivery. The most visible cost layer — and only part of the picture.

2C

Commercial Terms & Trade

Discounts, rebates, promotional spend, settlement terms. Sits in Finance and rarely reaches the supply chain view. Often flips a profitable account.

2D

Service & Compliance

EDI, routing guides, custom labelling, vendor chargebacks, account management time. The cost of how a customer demands to be served.

2E

Returns & Reverse Logistics

Return rate by customer and channel, reverse freight, processing, write-off, credit administration. Usually pooled — so the accounts causing it never carry it.

Module 03

Commercial Intelligence

The decision layer. Knowing your cost-to-serve is worth nothing if it does not change what you do.

3A

Customer Segmentation

Which accounts belong in a premium tier, which in standard service, and which need a restructuring conversation.

3B

Pricing & Terms

Where current prices fail to cover the true cost of service — and where the business is quietly subsidizing loss-making accounts.

3C

Channel Strategy

Which channels are structurally profitable. Whether e-commerce justifies its return rate, or the distributor tier its rebate structure.

3D

Negotiation Preparation

Walking into the annual review knowing your true cost-to-serve. You know precisely which terms must change, and by how much.

Contract layer — Costs that arrive as a bundled fee — 3PL management contracts, freight embedded in a supplier's product price, pooled shared services — are captured separately, allocated by throughput volume, and flagged as directional throughout the output. Most cost-to-serve models miss this layer entirely. It is routinely 30–40% of the true cost.

The Core Idea

Same product. Different path. Different margin.

A supply chain is not a list of customers. It is a network of routes. Every route through that network is a leg — and legs behave very differently from one another, even when the product is identical.

A leg is a complete supply chain path from origin to end customer, traced through every node (a place the product sits) and every hop (a movement between nodes) along the way. Each node and each hop carries its own cost. That is how the model shows you not just that a route is expensive, but exactly where on the route the cost lives.
Path A — Dubai → Abu Dhabi → Government fleet  ·  87.2% margin
Dubai DC
$5.80
Road · 140 km
$2.60
Abu Dhabi br.
$6.70
Customer collect
—
Govt fleet
$3.90
Total cost-to-serve $19.00 against $148 net revenue → contribution $129 per tyre. Three nodes, one paid hop, and the customer collects. This is the benchmark.
Path B — Dubai → Doha 3PL DC → Doha branch → Qatar retail  ·  62.8% margin
Dubai DC
$5.80
⚑ Road · border · 600 km
$13.20
⚑ Doha DC (3PL)
$11.50
Road · 22 km
$6.00
Doha br.
$10.50
Own fleet · 8 km
$4.50
Qatar retail
$6.50
Total cost-to-serve $58.00 against $156 net revenue → contribution $98 per tyre. Same product, same supplier, same business. An extra node and a contracted cross-border hop account for a 24.4-point margin difference. That is a network design question, not a pricing one.
See the Output

Sample diagnostic — the leg profitability ranking.

Every route in the network, ranked by what it actually contributes. Switch the unit of measure to reframe the numbers for whoever is in the room. Outlier flags fire automatically when a node or customer metric runs beyond 1.5× the network average.

Sample diagnostic · Wildernet Strategic Consultancy Illustrative — sample data only

Illustrative output — sample data, anonymized for demonstration. The real deliverable is built around your network, your numbers, and your customers.

How to Engage

Three ways to work with the model.

Start with the questions. Deepen into the numbers. Then keep it current — because the value of a cost-to-serve picture compounds the moment there is a second quarter to compare it against.

Tier One

Free Diagnostic

Online · 15–20 minutes
  • Qualitative self-assessment across all three modules
  • Profitability visibility scored and mapped
  • Three priority flags and a value-at-risk indicator
  • Practical recommendations you can act on without us
Tier Three

Subscription

Quarterly refresh · Ongoing
  • Quarterly data refresh and re-ranked legs
  • Quarter-on-quarter movement and trend analysis
  • Outlier alerts when a leg starts to deteriorate
  • Annual negotiation preparation, evidenced

The tiers are sequential, not alternatives. The free diagnostic frames the problem. The engagement builds the model and the data architecture behind it. The subscription is what turns a one-off analysis into an intelligence asset that gets more valuable every quarter it runs.

The Data

What we will find — and what we will have to build.

Not all cost-to-serve data exists. Knowing what is sitting in the ERP, what needs excavating, and what has to be constructed is how the engagement gets scoped honestly before day one.

Typically available

Sitting in the ERP or with Finance. Low effort to extract.
  • Net revenue by customer
  • Customer-specific discounts
  • Order count and lines per customer
  • Average order size by customer
  • Days sales outstanding
  • Total freight spend

Sometimes available

Exists somewhere, but needs finding or calculating.
  • Returns volume by customer
  • Freight cost allocated per customer
  • Inventory carrying cost by SKU
  • Warehouse cost: storage vs handling split
  • Volume rebates paid by account
  • Trade and promotional spend by account

Rarely available

Requires estimation, activity mapping, or new collection.
  • Customer service cost per account
  • Last-mile cost by delivery address
  • Activity-based cost per pick or order
  • Inbound freight embedded in product price
  • Sales force time by customer
  • EDI and compliance cost per account

This is not a prerequisite list. It is a map. Every engagement starts with the data integrity gate check, and the model is built to work with what exists — flagging clearly wherever a figure is directional rather than measured.

Who This Is For

Businesses where the P&L stops being useful at the customer line.

The diagnostic is designed for organizations with enough route and channel complexity that averages have stopped telling the truth — and where that blind spot is already costing money.

01

Distributors & Wholesalers

Many customers, many routes, many prices.

Where the gap between what you invoice and what you actually net is never visible per account, and route design has grown by accretion rather than decision.

02

FMCG & Consumer Goods

High SKU count, promotional complexity, multi-tier distribution.

Where return rates and service requirements vary enormously by customer, but cost allocation flattens all of it into one blended average.

03

Cross-Border Operations

Contracted carriers, third-party warehousing, embedded freight.

Where product moves through 3PLs and bundled contracts, and the true cost per route is almost always understated because nobody can see inside the invoice.

“The conversation isn’t about which customers are big. It’s about which ones are worth what you’re spending to serve them.”

— Wildernet Strategic Consultancy
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