A deficiency reserve is a balance-sheet reserve that strengthens an insurer’s solvency when expected liabilities exceed available margin in a life product portfolio.
Why it matters
Regulators and internal risk teams require enough reserve to support promised claims obligations over the life of covered contracts.
If reserve assumptions change or premium loadings are below expected requirements, additional reserve can be required to avoid solvency drift.
Actuarial mechanics
The reserve is a calculation output, not a standalone product benefit. It is based on:
- mortality and expense assumptions,
- interest rate assumptions,
- and policy-level cash flow projections.
Claims and policyholder impact
From the policyholder perspective, this reserve appears indirectly as a measure of financial stability, not as an explicit policy rider.