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🏗️ '''Building blocks''' is the plural form commonly used to describe the complete set of modular components that together constitute the measurement of [[Definition:Insurance contract liability | insurance contract liabilities]] under [[Definition:IFRS 17 | IFRS 17]]'s [[Definition:General measurement model | general measurement model]]. While the singular "[[Definition:Building block | building block]]" may refer to any individual component, the plural term typically denotes the full framework — encompassing the [[Definition:Present value of future cash flows | present value of future cash flows]], the [[Definition:Risk adjustment | risk adjustment]] for non-financial risk, and the [[Definition:Contractual service margin | contractual service margin]] — as an integrated measurement architecture. Industry practitioners, standard-setters, and accounting literature frequently refer to the "building blocks approach" (or BBA) as shorthand for this measurement model, distinguishing it from IFRS 17's simplified [[Definition:Premium allocation approach | premium allocation approach]] available for shorter-duration contracts.

🔗 The power of the building blocks lies in how they interact. When assumptions about future [[Definition:Claims | claims]], [[Definition:Expenses | expenses]], or [[Definition:Policyholder | policyholder]] behavior change, the resulting adjustments flow through specific building blocks according to defined rules: changes relating to future service adjust the [[Definition:Contractual service margin | CSM]], changes relating to current or past service affect the [[Definition:Income statement | income statement]], and the impact of [[Definition:Discount rate | discount rate]] changes on the present value of future cash flows may be routed through [[Definition:Other comprehensive income | other comprehensive income]] or profit and loss depending on the entity's accounting policy. This structured routing prevents the earnings volatility that plagued earlier standards and gives [[Definition:Analysts | analysts]] a clear map of where changes originate. The [[Definition:Risk adjustment | risk adjustment]] building block, meanwhile, serves as a measure of the uncertainty premium — its release over time provides insight into how much compensation for risk bearing the insurer is earning as uncertainty resolves. Together, the building blocks create a decomposition of value that is more transparent and economically meaningful than any prior global insurance accounting framework.

🌍 Across the many jurisdictions that have adopted IFRS 17 — from the European Union and the United Kingdom to South Korea, Japan (for IFRS reporters), Australia, Canada, and Singapore — the building blocks framework has become the common language for insurance liability measurement and financial analysis. The practical implementation, however, has revealed interpretive differences: companies and their [[Definition:Auditors | auditors]] have made varying choices about the level of aggregation for grouping contracts, the methodology for calculating the risk adjustment, and the treatment of acquisition cash flows within the [[Definition:Present value of future cash flows | present value of future cash flows]]. These differences mean that while the building blocks provide a shared conceptual architecture, full comparability across insurers remains a work in progress. Nonetheless, the framework has already delivered on its core promise of transparency, enabling [[Definition:Regulators | regulators]], [[Definition:Rating agency | rating agencies]], and [[Definition:Investors | investors]] to understand the constituent drivers of an insurer's reported financial position in a way that was not feasible under [[Definition:IFRS 4 | IFRS 4]] or many local accounting regimes.

'''Related concepts:'''
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* [[Definition:Building block]]
* [[Definition:IFRS 17]]
* [[Definition:Premium allocation approach]]
* [[Definition:Contractual service margin]]
* [[Definition:General measurement model]]
* [[Definition:Risk adjustment]]
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Definition:Building blocks - Revision history

PlumBot: Bot: Creating definition