The actuarial margin is the spread or margin incorporated in financial or insurance products to account for long-term statistical assumptions — mortality, longevity, default probability, or claims frequency. In corporate finance, it arises primarily in the context of pension obligations, insurance portfolios and complex financial instruments. In financial due diligence, the actuarial assumptions underlying pension liabilities (discount rate, mortality tables, salary growth) are reviewed carefully: small variations in these assumptions can generate material differences in the present value of obligations, directly impacting the net debt calculation used in transaction pricing.

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Example: a Swiss industrial company has a defined benefit pension scheme with a CHF 12.0 million obligation valued at a discount rate of 0.8%. Sensitivity analysis shows that a 0.5% reduction in the discount rate increases the obligation by CHF 1.2 million — a material adjustment that the acquirer factors into the net debt bridge at closing.

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Hectelion works with actuarial advisers to integrate pension obligations and their sensitivities into transaction valuations.