What it means
A company buys $20 million worth of goods and services in a year, and $14 million meets its written definition of managed purchasing, so its spend-under-management rate is 70%, leaving $6 million to examine for risk or opportunity. NetSuite and the Hackett Group discuss spend-under-management measurement and definition choices, and their approaches show why a procurement team must state both the managed criteria and the total addressable spend base.
Define the denominator first, since it might include all external vendor spend or only categories procurement can realistically influence. Exclude payroll, taxes or intercompany transfers only under a documented rule, because quietly removing difficult categories can inflate the percentage.
Identify what counts as managed, such as active contracts, competitive sourcing, approved suppliers or purchase-order controls: a transaction made through software is not necessarily managed if there is no meaningful supplier or policy oversight, while a specialist contract can be managed even if its invoice follows a manual process, depending on the definition. For the illustration, $14 million divided by $20 million gives 70%.
Use the same period and currency for both sides, because exchange-rate changes can distort a cross-border comparison, and check supplier and invoice data quality before calculating the final share, since different legal names for one vendor can split the spend picture while duplicate invoices can inflate the base. Categorise purchases consistently so managers can find unaddressed areas, and do not let "miscellaneous" swallow major categories.
A higher rate may reflect a new contract covering existing spending, not a reduction in cost, so measure procurement savings separately with a credible baseline and verified purchases. Track contract compliance, because spend with an approved supplier may still use off-contract items or prices, and look at risk as well as cost, since unreviewed suppliers can create continuity, privacy or safety concerns.
Tail spend may involve many small invoices, and a proportionate control can be better than expensive manual approval for each one. Build useful purchasing paths, because staff may bypass a process that is too slow for routine needs, especially urgent repairs or low-value items.
Set ownership for each category, since an annual dashboard without a responsible buyer and a practical improvement plan does not change behaviour. For a new subsidiary, map its spend before claiming a comparable trend, because the base can shift after an acquisition, and a lower rate in one business unit may reflect a legitimate scope difference, not necessarily weak discipline, so compare definitions first.
Do not force every category through the same sourcing event, as some purchases require unique expertise or emergency response, and record exceptions with reason and approval so that an exception can be appropriate without being invisible or routinely bypassing control. Check payment data against purchase orders and contracts to avoid double-counting or missing purchases, and state whether indirect and direct materials are included, since the two can have different control processes, supplier markets and contract horizons.
Use a consistent snapshot of supplier status, because a contract signed after an invoice should not automatically reclassify old spend, and check that controls actually applied when the commitment was made, not only when the invoice was processed. Compare coverage with supplier performance and user satisfaction, because managed spend can still be poorly managed, and focus expansion on categories where procurement can improve value or reduce risk without blocking necessary work, remembering that the metric is a map of buying visibility and influence, not a trophy for pushing one percentage to 100.
In practice
Real-world examples.
Example
A company reports that $14 million of $20 million in defined external spend meets the managed criteria, producing a 70% rate. The procurement head attaches the criteria and the list of exclusions, so the board can see exactly what the percentage covers.
Example
A purchase uses an approved supplier but an off-contract price, so compliance is reviewed separately. The invoice counts toward managed spend under the definition, yet the buyer still raises the price difference with the supplier. The rate and the price check answer different questions.
Example
A company maps new subsidiary invoices before comparing coverage with the prior year. The acquired business buys through different suppliers and systems, so its spend is classified first and reported as a separate line. The group rate is then compared on a like-for-like basis.
Formula
Calculation
Spend under management = spend meeting documented procurement-management criteria / total eligible external spend in the same period x 100. Publish exclusions and criteria.
Worked example: $14 million of managed spend / $20 million of eligible external spend x 100 = 70%.
The definition of the denominator changes the answer. Suppose $2 million of the $20 million turns out to be intercompany transfers that the documented rule excludes. Eligible spend falls to $18 million, and the rate becomes $14 million / $18 million x 100 = 77.8%. The rate rose by 7.8 percentage points without any change in buying behaviour, which is why exclusions must be published and applied consistently from year to year.Case study
Seen in the real world.
In this fictional case, Willow Manufacturing found scattered maintenance buying outside its approved routes. It added a practical supplier option, tracked exceptions and checked service quality rather than only the percentage. The case is invented.
The maintenance team had bypassed the official process because urgent repairs could not wait for approvals. Willow Manufacturing set up a pre-approved supplier list with a same-day ordering route, and the managed share of maintenance spend rose steadily over the following year. Procurement also reviewed repair times and complaints, and it did not treat the higher percentage as success until service quality held.
Watch out
Common mistakes.
- Inflating the rate by excluding hard-to-manage spend without disclosure.
- Counting a purchase-order click as proof of sourcing oversight.
- Treating coverage as procurement savings.
Questions
People also ask.
Is a higher rate always better?
Not by itself. Check cost, supplier performance and the burden of controls.
What belongs in managed spend?
Use documented criteria such as sourcing, contract and approved buying controls.
Can a contract signed later cover old purchases?
Not automatically; classify spend under the rule and status at the time.
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