Turn your ideal customer profile into clear fit rules.

A B2B ideal customer profile, or ICP, describes a suitable company or buying unit. A buyer persona describes a person involved in the decision. An account list names the individual organisations that meet the profile. Keeping those three questions separate prevents “operations directors at medium-sized companies” from standing in for an actual fit decision.

If your ICP already works, use it. A new market may call for better sources and local buying-unit research, while a new product may need the profile itself tested. Start with the uncertainty that is holding the work back.

Choose the unit your offer serves. For a manufacturer, it may be a plant using a supported process. For a staffing firm, it may be an employer hiring a particular role family in a region it covers. A parent group can contain several sites with different equipment, agreements and buyers.

State the customer problem and your delivery ability together. “Plants needing supported maintenance parts within our delivery area” says more than “manufacturing companies with 50 to 500 employees”. Size may be a useful indicator, but explain why it changes your ability to help and what still requires checking.

The Netherlands Chamber of Commerce (KVK) publishes audience-research guidance that connects the customer problem, company type and available customer information. The worksheet below makes those questions usable as B2B account decisions. The wider go-to-market guide shows where company fit connects to demand, qualification and existing-customer work.

Review repeat customers, lost opportunities and work that proved difficult to deliver. Include the account owners and people who fulfil the promise. A large first order can look attractive while urgent deliveries, unsupported requirements or repeated rework make the relationship difficult to serve.

Ask what explains each case, and keep the underlying record. “Large companies buy more” is weaker than a checked account history showing which sites order which supported products, how frequently and under what conditions. Separate a buyer’s stated reason from the salesperson’s explanation of the result.

Use a mixed sample instead of selecting only recent wins. Include quiet accounts, known exclusions, current customers and uncertain prospects. Record the period and selection method. A pattern among a few accounts is a hypothesis to investigate, not a percentage describing the market.

Distinguish permanent requirements from circumstances the team can change. Supported equipment may be essential to the current offer. A slow approval process may require a different sales approach rather than exclusion. The segmentation guide helps identify differences that justify different treatment within the suitable market.

Turn missing evidence into a question someone can investigate. “Plant model unknown” identifies a research task. “Good growth potential” needs a definition of the observable conditions that would support it.

Buying unit: name the entity, site or team whose need and buying decision you are evaluating. Record the parent relationship and where local versus central approval matters. Do not assume a group-level match settles a site’s suitability.

Problem you solve: describe the recurring commercial or operational work your offer supports. Use a customer’s recognisable task, such as keeping a supported production line supplied, rather than “digital transformation” or a demographic category.

Required fit: list the conditions that must hold for you to serve the account. Give each condition a source or a way to confirm it. Decide whether an absent answer means research, conditional inclusion or exclusion; those decisions should not depend on who happens to read the record.

Exclusions: name reasons to rule an account out even when other characteristics look attractive. Delivery limits, unsupported specifications and relevant agreements belong here. Keep a confirmed exclusion distinct from a service issue that needs the current account owner’s attention.

Useful preferences: identify features that help order suitable accounts, such as recurring use of a supported product. Explain the expected benefit and its uncertainty. A preference should not quietly become a required rule in the list builder’s filter.

Evidence still needed: record the unresolved fact, why it matters, the next source to check and the person responsible. An account-research brief can turn an unknown into a bounded investigation rather than a request to collect every available field.

Timing: describe an observed change that might make an otherwise suitable account worth attention now. Keep source and date with the observation. Fit, current need and permission to make contact remain separate decisions.

Choose ten accounts containing strong fits, clear exclusions and uncertain cases, including existing customers. Ask two colleagues to apply the profile independently. For each, record include, exclude or research, with the rule, source and buying unit. Compare their reasoning before agreeing a final label.

Review disagreements before counting the final inclusions. One reviewer may use the registered office instead of the plant address; another may treat an unconfirmed equipment model as supported or assume that a group contract covers every site. Repair the rule or evidence reference that caused each disagreement, then apply the same criteria again.

Keep the unresolved accounts visible. They are not failed prospects and do not count as confirmed fits. Assign the smallest useful check, such as verifying the operating address or finding the contract’s site schedule. Reapply the same rule when that evidence arrives.

Record the profile version and a few difficult decisions beside it. If the supplier later extends its delivery area, review the accounts excluded for that reason. Preserve the previous decision and effective date so the team can explain why an account entered a later campaign.

Finish by asking a third colleague to review one included, one excluded and one unresolved record. If they need a private explanation from the profile’s author, improve the wording or evidence reference before expanding the list. The exercise checks whether the method is usable; ten accounts do not validate the whole market.

Use the agreed rules to build a company- and site-level target account list, then join existing customers, open opportunities and ownership. The profile is the selection method; the list is its application to named records. Neither establishes a revenue forecast.

Carry the same evidence into positioning and messaging. If delivery fit matters to buyers, explain the relevant service boundary and support it. Do not convert an internal preference into an unsupported public claim about every customer.

Timing observations can inform the next review; the buying-signals guide explains their limits. A change may justify research, a service conversation or no action. Existing customers may need a different handover from a new-business prospect even when their underlying fit is identical.

You can commission the profile and evidence review through Plan as a focused research assignment. Agree the deliverable your team needs, such as fit criteria and checked target accounts. We can hand that work over for your own outreach, carry it into an agreed campaign, or divide responsibilities with your team.