The Four Buying Influences
Map every person who can derail or advance your sale into one of four decisive roles
Every complex sale—regardless of industry, organization size, or deal value—involves exactly four buying influence roles: the Economic Buyer (sole authority to release funds and give final yes), User Buyers (those who will personally use what is purchased and whose productivity is directly affected), Technical Buyers (screeners who evaluate against specifications and can say no but not a unqualified yes), and the Coach (an insider who wants your solution to succeed and will guide you through the organizational landscape).
The critical insight is that these are functional roles tied to a specific sales objective, not job titles. The same person can play multiple roles on one deal and different roles on another. Many salespeople never find the actual Economic Buyer—confusing the most senior person they have access to with the person who controls the budget for this specific purchase. The Economic Buyer is identified by one test: can this person alone release the required funds?
Covering all four bases—meaning having someone appropriately positioned to address each role—is the foundation of every sound sales strategy. An uncovered base is always a Red Flag, regardless of how strong your position appears with the contacts you do have.
- Every complex sale contains all four buying influence roles; if you cannot name a person for each role, you have an uncovered base.
- Economic Buyers are identified by one test only: can this person alone authorize release of the funds required?
- Technical Buyers cannot give a final yes, but they can give an absolute no—their gatekeeping function must never be dismissed.
- A Coach is not simply a friendly contact; a true Coach must want your solution adopted, have credibility with other buying influences, and be willing to act on your behalf.
- Roles are tied to a Single Sales Objective, not to a person's permanent status—the same individual can hold different roles on different deals.
- Draw the Buying Influences ChartCreate a four-box grid with one box per role. Begin filling in names you are confident about. Leave boxes empty rather than inserting guesses—an empty box is informative; a wrong name creates false security.WarningDo not use job titles as a proxy for role. Confirm role by asking: 'Who controls the budget?' and 'Who will use this daily?' rather than assuming from org charts.
- Locate the True Economic BuyerIdentify who can alone sign off on releasing the required funds for this specific purchase. Ask indirect questions—'What is the decision process?' and 'Who needs to approve funding?'—rather than 'Are you the final decision-maker?' People who loudly claim final authority are often Technical Buyers protecting their turf; genuine Economic Buyers are usually comfortable with their power and do not need to assert it.Pro tipThe Economic Buyer's level of financial authority scales with deal size. A $10,000 purchase may close at department head level; a $500,000 deal may require C-suite sign-off.
- Identify User and Technical BuyersUser Buyers are those who will personally work with your product or service after purchase—their success is directly tied to whether it delivers. Technical Buyers are any individuals, internal or external, who screen the proposal against criteria (technical specs, legal, procurement, compliance). Both groups can block a sale; both require coverage.WarningIn large organizations, there are often multiple User Buyers and multiple Technical Buyers. Map all of them—discovering a previously unknown Technical Buyer after you have submitted a proposal is a crisis.
- Develop at Least One CoachA Coach must satisfy three criteria: they want your solution adopted, they have credibility inside the buying organization, and they are willing to proactively provide you with guidance. A single Coach is the minimum; a network of Coaches—particularly ones who cover each buying influence role—is optimal. Coaches are developed, not simply found: you earn their guidance by first proving your solution helps them Win.Pro tipCoaches can exist inside your own organization as well—a senior executive who can reach the Economic Buyer on your behalf is a form of internal coaching.
- Assign Coverage ResponsibilitiesDetermine who on your side is best positioned to engage each buying influence. The salesperson is not always the optimal contact point—an executive-to-executive relationship, a technical specialist, or a mutual peer may be more credible for a particular role. Assign coverage before the next call and close any uncovered-base gaps with explicit actions.WarningThe 'one-legged stool' failure pattern—developing deep rapport with one contact while leaving others untouched—is among the most common causes of deal loss when that single contact changes roles or departs.
A salesperson who had built a five-year relationship with a single contact at a major customer account discovered that contact had been fired. Every strategy for the account had been built around this one person, creating what the authors call the one-legged stool.
With a resistant Technical Buyer (Steinberg) blocking a deal, the salesperson leveraged their economic buyer contact (Farley) to coach downward into middle management, and also worked through Coach Kelly who shared Steinberg's trouble perception to arrange a departmental tour demonstrating fit.
Miller and Heiman developed the four-role model by observing patterns across thousands of complex sales won and lost by their corporate clients. They found that salespeople who lost deals they expected to win almost always had a structural gap: they had worked intensively with some buying influences while leaving others completely uncontacted. The framework was designed to make this structural gap visible before the sale was lost rather than after.
The model deliberately avoids job-title categories (VP, Manager, Director) because organizational authority shifts constantly. By anchoring roles to function—who ultimately releases funds, who will use it daily, who screens against specs, who wants you to win—the framework remains applicable across any industry and any size of organization.