Equalization Reserve (Schwankungsrückstellung)
An equalization reserve is a statutory accounting provision that sets aside amounts from better-than-average loss years to offset future worse-than-average loss years in highly volatile lines of business.
Concept
An equalization reserve is a statutory accounting provision that an insurer establishes in lines of business with highly volatile loss experience, in order to smooth the balance between better-than-average and worse-than-average loss years over a multi-year period. In years with below-average loss costs, an amount is added to the reserve, which can then be released again in years with above-average loss costs.
Affected Lines of Business
The equalization reserve is typically established for lines with pronounced accumulation risks or statistically highly dispersed loss experience, such as hail, credit, surety, or nuclear liability insurance, as well as certain reinsurance business; the specific calculation method and the permissible maximum level of the reserve are prescribed in detail by supervisory regulation in many jurisdictions.
Balance Sheet and Economic Significance
Because the equalization reserve serves the commercial-law prudence principle, it is generally not recognized as a standalone technical provision under value-oriented valuation regimes such as Solvency II or IFRS 17, which are based on realistic best-estimate assumptions; its economic function of result smoothing is instead implicitly reflected there through the risk-based capital requirement and the risk margin.