Approved supplier lists: what they really measure, and how to keep the shortlist worth choosing from

When a business asks for quotes or runs a tender, it usually takes care: clear criteria, fair comparison, a documented decision. That care is applied to a choice among suppliers who were already allowed to quote. The earlier decision, who got onto the approved supplier list or panel in the first place, usually received much less attention. It may have been made years ago, by someone else, against a questionnaire written for work that has since changed. And no supplier who failed to make the list ever had a chance to complain about a quote it could never submit.

What those approval screens measure is often not what owners assume. Turnover thresholds, high insurance limits, certified management systems, corporate references and long trading histories are all reasonable risk controls. They also test whether a supplier can afford a back office. Where the work is done by a few skilled people, the screen may measure everything about a firm except the part that does the work. The suppliers best at getting onto lists are not necessarily the best at the job.

This article explains what approval screens really test, why lists drift away from the work they were created for, and how to review a list so the shortlist is worth choosing from. It also offers some practical points for small suppliers trying to get onto other organisations’ lists. It is general information. Some requirements, such as licences and certain insurance, are legal or contractual obligations that cannot be relaxed; check with your broker and adviser before changing them.

Why approved lists exist, and what they cost

Approved supplier lists and panels exist for good reasons. They shorten the time from need to order, spread the cost of checking suppliers across many jobs, give the business a basis for limiting who quotes, and avoid re-checking the same suppliers for every job. A business without any list would spend far more time qualifying suppliers.

The cost is less visible. A list fixes the choice set. The careful comparison at quote time protects against choosing badly among the suppliers on the list. It offers no protection against the absence of a better supplier who is not, because absence generates no complaint.

So the useful question is not only “did we choose fairly?” but “is the set we are choosing from the set we would choose today?”

What approval screens actually test

Take common criteria one at a time:

• Financial standing and turnover: solvency, and often scale.
• Insurance limits: the ability to buy cover sized for the largest job the buyer imagined.
• Certified management systems: the ability to fund certification and the paperwork that sustains it.
• Compliance declarations: the ability to staff a compliance function.
• Capacity: the ability to keep people available between jobs.
• Prior similar work: whether the supplier has done this before.

Each is a genuine control. Together they mostly measure whether a supplier can carry the overheads of supplying an organisation like yours. That is worth knowing, but it does not show whether the work will be done well.

Prior similar work deserves special attention. It is the most defensible criterion and the most self-sealing: a supplier must already have done the work to be allowed to do it. Over time, an accident of who was available years ago becomes a structural entitlement.

Lists outlive the work they were made for

A list is created for a particular kind of work. Then it persists, because reopening it takes effort and its members perform adequately on the work they were approved for. Meanwhile the work changes. Because the list is only ever compared with itself, this year’s members against last year’s, the drift goes unnoticed.

A common symptom: the work now needs a specialist skill that none of the approved suppliers has, so the approved supplier wins the job and subcontracts the specialist part to a small firm that could never have met the approval criteria. The business ends up buying the capability it wanted through a margin it never meant to pay, from someone it cannot see.

A five-part review

Review each important list periodically, once a year where spending or dependence is significant. The review should be owned by whoever lives with the results, not only by whoever administers the process.

1. Origin. Who created the list, when and for what work? Compare that with the last two years of actual orders. If the founding work no longer describes current spending, the list is a candidate for change.
2. What the screen tests. Classify each criterion:

If fewer than about a third of the criteria test delivery capability, the list mainly measures overhead.

3. Who is excluded. Identify suppliers that failed approval or never applied, and whether the barrier was capability or paperwork. If you cannot produce that list, you cannot see what your screen removes.
4. Concentration and age. What share of spending goes to the longest-standing members? How many suppliers joined in the last three years? When was each member’s capability last checked against current work?
5. The missing supplier. Name one supplier you would want for this work who cannot quote today, and the criterion that stops them. If nobody can name one, either the market really is narrow or you do not know it.

Three outcomes are possible: confirm the list, rescope it by changing the criteria and reopening admission, or split it by adding a lighter lane for specialist or smaller work that does not need the heavier screen. Allowing suppliers to apply at any time, rather than only when the list expires, keeps it current.

The not every supplier is a partner article covers segmenting suppliers and managing each group differently.

Size requirements to the work

Many approval requirements are set once, at the level of the largest or riskiest job the business could imagine, and then applied to everything. A tiered approach is usually fairer and safer:

• Insurance limits by job size or risk. A contractor tuning controls in a plant room does not carry the same exposure as one working at height on a façade. Ask your broker what limits are sensible for each type of work, and check what your own customers’ contracts require.
• Turnover thresholds by contract value. A rule that a supplier’s turnover should be a multiple of the contract value protects against over-dependence without excluding small firms from small jobs.
• Evidence of quality proportionate to the work. Certification is one way to show a working quality system. Documented procedures, inspection records and references from people who saw the work may be enough for smaller jobs.

Write the reason for each requirement next to it. A requirement nobody can explain is a candidate for change.

Give the list an owner and review triggers

Lists drift when nobody is responsible for whether they still fit. Name an owner who sees the results of the work, not only the paperwork, and agree events that trigger a review between scheduled ones:

• a new type of work that none of the approved suppliers specialises in;
• approved suppliers repeatedly subcontracting the core of a job;
• quality problems traced to the same few suppliers;
• no new supplier admitted for three years;
• a capable supplier rejected only on paperwork grounds.

If you are the small supplier

Many small businesses find themselves on the other side: capable of the work but unable to meet another organisation’s approval criteria. Some practical approaches:

• Ask what each requirement protects against. A buyer may accept a lower insurance limit for smaller jobs, or documented quality procedures instead of certification, if you show how the risk is covered.
• Ask whether a specialist or small-job lane exists, or could.
• Work as a subcontractor to an approved supplier while building the track record and documentation, but price your margin and protect your relationship with the end customer where you can.
• Invest selectively. Certification and higher insurance cost money every year. Pursue them where the work they unlock justifies it.
• Keep evidence of capability ready: case studies, references from people who saw the work, photos, test results.

The writing tender responses buyers can evaluate article covers presenting your capability clearly once you can bid.

A worked example

This is an illustration. A facilities management business looks after maintenance for a dozen commercial buildings on behalf of their owners. It keeps an approved contractor list created six years ago for general maintenance, requiring $20 million public liability insurance, a certified quality management system and five years of trading.

Over the past two years, its clients’ spending has shifted toward energy efficiency work, especially tuning building management systems, now about $120,000 a year. None of the approved contractors specialises in this. In practice, the approved electrical contractor wins the work and subcontracts it to a two-person specialist firm, adding a margin of around 15%, roughly $18,000 a year.

The facilities manager runs the review. The list’s origin no longer matches its spending. Of the eight criteria, only two test delivery capability. The excluded list includes the specialist firm, rejected only because of the insurance limit and lack of certification. The missing-supplier test names the same firm.

After checking with its broker and reviewing its clients’ contract requirements, the business creates a specialist lane for building systems work under $50,000 per job, with insurance sized to that work, documented quality procedures accepted in place of certification, and capability assessed through references from building owners and a short technical interview. The specialist firm is approved directly. The general list stays as it was for heavier maintenance work, and admission is now open year-round. A year later, the facilities manager checks the result: building systems work is now ordered directly, response times have improved because the specialist attends in person, and two other small firms have applied through the new lane.

How this applies to a small Australian business

• List your approved suppliers and when each list was created.
• Compare the founding work with current spending.
• Classify your approval criteria and size them to the work.
• Record who is excluded and why.
• Name the supplier you wish you could use, and what stops them.
• Add a lighter lane for specialist or small work where appropriate.
• Check legal and contractual requirements with your adviser and broker before relaxing any criterion.
• As a supplier, ask what requirements protect against and offer proportionate alternatives.

Signals worth watching

• Approved suppliers subcontracting the specialist part of the work.
• The same few suppliers winning for years.
• No new suppliers admitted for several years.
• Insurance or turnover thresholds sized for jobs you rarely do.
• Capable local firms that cannot quote.
• Lists owned by someone who never sees the work.

Common mistakes

• Treating the quote comparison as the whole decision.
• Equating overhead with capability.
• Relying on prior similar work until it becomes an entitlement.
• Letting lists run unchanged while the work changes.
• Never recording who was excluded.
• Relaxing legal or contractual requirements without checking.

Frequently asked questions

Should we scrap our approved list? No. It saves time and manages real risks. Review it so it matches the work you buy now.

Isn’t a lighter lane riskier? It can carry different risks, which is why it should be limited by job size or type and backed by capability evidence. Often it reduces risk by letting you deal directly with the people doing the work.

How often should lists be reviewed? At least every two or three years, and annually where spending is significant or the work is changing.

How do we assess capability without heavy paperwork? References from people who saw the work, site visits, a short technical conversation and a small trial job.

What if our clients require certain criteria? Then those criteria apply to their work. Check the actual contract requirements rather than assuming the strictest version applies everywhere.

Can we remove suppliers from the list? Yes, and you should when they no longer fit the work or perform poorly. Tell them why, and give them a route back if circumstances change.

Questions to ask

• When was our approved list created, and for what work?
• What share of our criteria actually test whether the work will be done well?
• Which capable suppliers can we not use, and why?
• Are our approved suppliers subcontracting the work we really need?
• How long since we last admitted a new supplier?
• If we built the list today, who would be on it?

Bringing it together

The most careful part of buying, comparing quotes, chooses among suppliers someone approved earlier, often against criteria written for different work. Those criteria frequently measure a supplier’s ability to carry overheads more than its ability to do the job. Review each important list against the work you now buy: check its origin, what its criteria test, who it excludes, how concentrated and old it is, and which supplier you are missing. Confirm, rescope or add a lighter lane, and keep admission open. A shortlist is only as good as the screen that created it.

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Source: KEVOS notes, drawing on teaching material on supplier prequalification, panels and tender evaluation. Examples and figures in this article are illustrations. This article is general information, not legal or insurance advice.