insurer asks for a breakdown of turnover per business activity

Turnover by activity determines the premium risk, not just the total

The insurer breaks down turnover because the risk differs per activity, and a single total figure does not show this. A business that both advises and itself installs or manufactures has a different likelihood of damage and a different type of claim for each activity. A liability insurer calculates premium based on the portion of turnover that is exposed to the riskiest component, so it wants to know exactly how much that is, not how much the business turns over in total. This is separate from what is recorded in the trade register: the Trade Register Act 2007 requires registration of a business's activities, but not an allocation of turnover to them. This breakdown is therefore a specific question from the insurer, not information that has already been officially established elsewhere.

If the chain file does not contain a breakdown by activity, there is usually total turnover available from the annual accounts. That total is then not automatically the answer to this question — allocating part of it to an activity without underlying figures is not a fact but an estimate, which the customer enters themselves in the insurer's portal. Comparable to the question about the current credit rating of the business, this concerns a figure that the insurer itself needs for its own risk assessment, not something that is already in an official register.

Why this does not follow from the basic registration

The Trade Register Act 2007 establishes which data of a business must be registered, including business activities in general terms, but not the turnover attributable to each activity. Client due diligence under the Money Laundering and Terrorist Financing Prevention Act also asks about the nature of business activities, not a turnover breakdown — this aligns with questions that the bank asks about the average payment term to suppliers, where the same applies: it is information that the asking party collects itself for its own assessment, not something that is already established in a central register.