Supply Chain Exposure for Canadian manufacturers
Turn your BOM into a prioritized exposure worklist.
Upload a CSV and see which components deserve attention first, based on the annual-spend and origin evidence in your file.
MapleBOM reports what your BOM establishes and clearly marks what it does not. It makes no tariff, CUSMA or Canadian-content determination.
BOM uploads are analyzed transiently in memory and are not retained. How this works
The problem
Everyone knows roughly where their parts come from. Almost nobody can prove it.
Country of origin lives in a supplier portal, a customs broker's file, an email from 2019, and a column somebody stopped filling in. When a tariff moves or a customer asks for Canadian content, the answer takes weeks of chasing — and starts from a spreadsheet nobody trusts.
Origin data is incomplete by default
Buying through a distributor rarely records where a part was actually made. The gap follows how you buy, not what you buy.
A percentage is not a plan
Knowing that a fifth of purchasing has unverified origin does not tell you what to do on Monday morning. A ranked list does.
Concentration hides in the tail
Dependency is rarely on one obvious part. It is on a supplier, a country, or a category that never appears on a single line.
The core output
Where to focus first.
MapleBOM ranks covered components with explicit foreign reported origin or supplier country by annual spend, then shows which rows still need economic inputs.
In the sample analysis, 480 components have no established country of origin — but 10 supplier conversations would account for 80% of that exposure.
Unresolved origin, ranked by spend
Sample| Component | Supplier | Annual purchasing |
|---|---|---|
| Skid frame assembly, welded and m… | Ironwood Structural Compo… | $157,233 |
| Variable frequency drive, 75 kW 4… | Trillium Automation Supply | $69,707 |
| Servo drive, 1.5 kW dual axis | Trillium Automation Supply | $61,917 |
| Guarding package, perimeter fence… | Bluewater Enclosure Syste… | $60,869 |
| Panel air conditioner, 1200 W 480… | Meridian Electrical Supply | $51,269 |
| Conveyor module, 3 m belt section… | Ironwood Structural Compo… | $49,693 |
What you get
A prioritized exposure view of one product, in about ten seconds.
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Find the focus rows
Components ranked by covered annual spend, with the evidence and next fact behind each priority.
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Separate the evidence
Reported origin and supplier country shown as separate views, with Unknown / Unverified kept visible instead of inferred.
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Leave with a worklist
Missing economic inputs, supplier concentration and downloadable rows make the next conversation finite.
What MapleBOM will not do
Provenance is only useful if it is true. These are the rules the analysis follows, without exception:
- We never infer country of origin from a supplier, manufacturer, distributor or company nationality. Buying a part from a Canadian distributor does not make it Canadian.
- Anything the file does not establish is reported as Unknown / Unverified, with the reason it is unresolved.
- Country values we cannot interpret are surfaced, not silently dropped or guessed.
- V0 makes no CUSMA, tariff, Canadian-content or Buy Canadian determination. Those require rules and evidence this tool does not yet have.
- Facts you supplied, figures we calculated, and information nobody has are labelled separately throughout.
Future research Show four optional questions
These capabilities are not built. The current product is the Supply Chain Exposure analysis above.
Resolving unverified origins
Track evidence and supplier attestations for the components nobody can currently vouch for.
Resolve unknown origins → Private betaTariff exposure
Understand which components and purchasing categories may be affected by changing tariffs.
Calculate tariff exposure → Private betaCanadian content and CUSMA
Identify documentation gaps and the components that would need deeper qualification.
Analyze Canadian content → Private betaCanadian supplier alternatives
Discover foreign components that may have Canadian manufacturing or sourcing alternatives.
Find Canadian suppliers →None of these are built. Clicking one tells us which capability you want, not what you would get back — no figure anywhere else in MapleBOM depends on one that does not exist. The current report remains the Supply Chain Exposure analysis shown above.
Common questions
Start with the question behind the spreadsheet.
MapleBOM is deliberately clear about what a bill of materials can establish, what still needs evidence, and where a deeper analysis would begin.
Can MapleBOM calculate tariff exposure?
It identifies reported origins and the missing origin data that tariff analysis would need first. It does not calculate tariff liability or make a customs determination.
How much of our product is Canadian?
It shows reported Canadian sourcing and the purchasing share that is unverified. It does not make a Canadian-content or CUSMA determination.
Which components could be sourced in Canada?
It ranks foreign-sourced components and suppliers by spend so a sourcing search starts with evidence. Automated supplier matching is not built yet.
Can we prove where our components come from?
It ranks unknown and unverified origins by importance and identifies the suppliers who hold the answers, turning an open-ended chase into a work list.
What does MapleBOM do with an uploaded BOM?
The CSV is analyzed in memory and not retained. MapleBOM stores only the lead or contact details you intentionally submit.
Who is MapleBOM for?
Canadian manufacturers, procurement leaders, and supply-chain teams who need a defensible starting picture of component origin and dependency.
Built in Canada
An independent project.
MapleBOM is built by Tyson Hamilton, a Canadian software engineer building better trade and supply-chain tools for Canadian manufacturers.
It is early, and deliberately narrow: it reports what your bill of materials establishes, and says plainly what it does not.
Questions, feedback, or interested in trying MapleBOM with your own data?
hello@maplebom.caSee where your BOM needs attention.
Upload a CSV and get the same prioritized Supply Chain Exposure view for your product.