Spend that never touched procurement
The categories procurement manages are visible and negotiated. The spend that never reached them is invisible, unnegotiated and frequently substantial.
- Spend outside the purchasing process arrives through cards, expense claims, direct invoices and subscriptions.
- It is invisible to category management, so it is never negotiated and rarely under contract.
- Measuring it requires combining several sources, since no single system contains it.
- Most of it exists because the purchasing process did not fit the need rather than because policy was ignored.
- The largest recoveries usually come from consolidating suppliers already under contract elsewhere in the business.
Ask what your company spends with a given supplier and the answer usually comes from purchase order data. It is accurate for the spend that went through purchase orders.
Around that sits a population that did not: card transactions, expense claims, invoices received without an order, subscriptions renewing automatically and services engaged directly by a department.
None of it is visible to category management, so none of it is negotiated, and a meaningful share is with suppliers where a contract already exists elsewhere in the business. That last point is worth dwelling on, because it means the money is available without any negotiation at all, simply by routing existing spend through an agreement that has already been signed.
The first task is not to eliminate it. It is to measure it, because almost nobody knows how large it is. Measurement also settles an argument that otherwise runs on assertion, since procurement believes the figure is large and budget holders believe it is trivial, and both are arguing without data. Producing the number is a combination and normalisation exercise rather than an analytical one, which is the same shape of work as merging duplicate supplier records, and it fails for the same reason, which is that nobody owns the data.
Where the invisible spend sits
Card programmes are the largest single channel in many companies, and card data does not flow into the payables ledger in the same form, as card spend outside the AP ledger describes.
Expense claims carry supplier spend that looks like employee reimbursement, so it never appears against the supplier at all.
Direct invoices without an order arrive and are approved by a budget holder, which is legitimate in many categories and invisible to category management.
Subscriptions renew automatically on cards or direct debits, frequently for services nobody has reviewed in years, which is the fastest growing part of the population.
Four reasons the process was bypassed
Understanding the reason determines whether the answer is process change or enforcement.
Measuring it properly
No single system holds the answer, so the measurement requires combining payables, card and expense data with a consistent supplier identity across all three.
That last part is the difficulty. The same supplier appears differently in card merchant data, in expense claims and in the payables ledger, which is why the analysis is rarely attempted.
Once combined, the useful cut is spend by supplier across all channels compared against contracted spend, which shows both the uncontracted total and the suppliers where a contract already exists.
The second of those is usually the largest immediate opportunity, because the negotiation has already been done and the spend simply is not being routed through it.
The analysis is hard because the supplier identity differs by channel. That is also why nobody has done it.
Where the value usually is
Three categories, in descending order of how quickly the value can be captured.
| Category | Opportunity | Difficulty |
|---|---|---|
| Off contract spend with contracted suppliers | Route it through the existing agreement and capture the negotiated price immediately. | Low. The contract exists and the change is operational. |
| Fragmented spend across many suppliers | Consolidate to fewer suppliers and negotiate. | Moderate, and it requires the category to be genuinely comparable. |
| Duplicate subscriptions | Cancel overlapping services bought by different teams. | Low value per item, high frequency, and easy to find once the data is combined. |
Any change to purchasing routes should preserve the control environment. Consolidating spend should not remove the approval and verification steps applying to it.
Procurement negotiates what it can see. The rest is bought at list price.
ChatFinBringing the spend into view
Five steps, of which the first two are the real work.
Combine the channels
Payables, cards and expenses into one view, which requires a consistent supplier identity across all three.
Normalise supplier names
Merchant descriptors, trading names and legal entities mapped to one identity, which is the same problem as the close that starts before the period ends.
Compare against contracted suppliers
To find spend that could be routed through an existing agreement today.
Fix the process where it was bypassed
Faster routes for the categories where the reason was friction rather than awareness.
Report total spend by supplier monthly
Across all channels, which is the figure procurement needs and rarely has.
Two ways companies get this wrong
Both treat a process problem as a compliance one.
Enforcement first
A policy campaign against maverick spend, without changing the process that made it necessary, moves the spend to a different channel rather than into procurement.
Cards blamed
Card programmes make the spend visible and easy, and removing them usually pushes it into expense claims where it is harder to see, which is a step backwards.
How ChatFin builds the combined view
Combining channels and normalising supplier identity is exactly the kind of repetitive matching work that stops this analysis from being done.
Category strategy, supplier negotiation and purchasing policy remain decisions for your procurement team.
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Frequently Asked Questions
How large is spend outside the purchasing process?
It varies widely by company and by sector, and in most organisations it is larger than expected because nobody has combined the channels. The measurement is the first deliverable, and it usually changes the conversation on its own.
Should we eliminate it?
Not entirely. Some categories are genuinely unsuited to a purchase order process, and forcing them through it creates friction without control benefit. The objective is visibility and negotiated pricing rather than universal purchase order compliance.
What is the quickest win?
Spend with suppliers you already have contracts with, routed outside those contracts. The negotiation is already done, so capturing it is an operational change rather than a commercial one, and it delivers the contracted price immediately.
Why is the analysis so rarely done?
Because supplier identity differs across payables, card and expense data, so combining the channels requires normalisation work that nobody owns. That is a data problem rather than an analytical one, which is why it persists in companies with capable procurement teams.
Procurement can only negotiate what it can see.
Combining the channels, normalising supplier identity and comparing against existing contracts turns invisible spend into a specific list of actions.
If you want a first year range for combined spend analysis across your channels, the estimator gives one in about a minute.
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This article is general information for finance and accounting teams. It is not legal, tax, accounting or investment advice. Dates and thresholds are given as published at the time of writing and several of these timelines have moved before, so confirm the current position with your advisers and with the relevant authority before acting.