Glossary term
Mortality Table
A mortality table shows death rates by age for a defined population and is used in insurance, annuity, pension, and actuarial calculations.
Updated
Read time
What Is a Mortality Table?
A mortality table, also called a life table, is a statistical table that shows the probability of death at each age for a defined population. Insurers, pension plans, actuaries, regulators, and retirement-income providers use mortality tables to estimate how long benefits may be paid and how likely death claims are to occur.
A mortality table does not predict the exact lifespan of one person. It describes expected patterns across a population or underwriting group. Those patterns help turn uncertainty into pricing, reserves, pension funding, annuity income, and long-term policy assumptions.
Key Takeaways
- Mortality tables show death rates or survival probabilities by age.
- They are used to price life insurance, annuities, pensions, and some retirement income products.
- Different tables may be used for different populations, products, or regulatory purposes.
- The table chosen can change premiums, reserves, funding requirements, and benefit values.
How Mortality Tables Are Used
In life insurance, mortality tables help estimate the expected timing and amount of death claims. In annuities, they help estimate how long payments may continue. Pension plans use mortality assumptions to estimate future benefit obligations. Regulators may prescribe or reference specific tables for statutory reserves, tax calculations, or plan funding.
The table is only one input. Interest rates, expenses, policyholder behavior, underwriting, benefit guarantees, and regulation can also affect pricing and reserves. Still, mortality assumptions are foundational because the timing of death or survival changes the expected cash flows.
Common Uses
Use case | What the table helps estimate | Financial effect |
|---|---|---|
Life insurance | Expected death claims | Premiums and reserves |
Annuities | Expected payment duration | Monthly income and insurer reserves |
Pension plans | Expected retiree benefit payments | Funding and liability calculations |
Estate and tax rules | Actuarial values in certain calculations | Valuation and compliance treatment |
What the Table Does Not Tell You
A mortality table is not a personal health forecast. It does not know an individual household, family history, current medical condition, lifestyle, or future care needs unless the table is specifically adjusted for a relevant group. For personal planning, it is more useful as a reminder that retirement, insurance, and estate decisions should account for a range of lifespan outcomes rather than one assumed age.
The Bottom Line
A mortality table turns population death and survival patterns into a usable financial assumption. It is a quiet but powerful input behind life insurance premiums, annuity payments, pension obligations, and many actuarial calculations.