Definition
Persistency is the rate at which annuity contracts remain in force over a defined period rather than lapsing, typically measured as the percentage of contracts (or contract value) still in force at the end of the period relative to those in force at the beginning, and used by carriers in pricing, capital management, hedging, and statutory reporting.
Why it matters
Persistency is one of the principal operational assumptions in annuity pricing and reserving. Carriers price products on assumptions about how long contracts will remain in force, and actual persistency that differs materially from the priced assumption affects both portfolio economics and capital adequacy. Persistency assumptions also affect the carrier's ability to hedge the embedded options in indexed and variable products, because the duration of the hedge depends on how long the underlying liabilities remain on the books.
How it works
Persistency is measured at various policy durations — for example, persistency at the end of year one, year five, year ten, or beyond the surrender period — and reported at the contract level or the value level (the latter weighted by cash value or premium). Persistency typically declines through the surrender period as some contract owners exit, then stabilizes after the surrender period ends and surrender charges have fully run off. Persistency assumptions are reflected in statutory reserves and risk-based capital calculations. Carrier persistency analytics inform product design, distribution choices, and the design of features (such as surrender charges, market value adjustments, and bonus structures) that influence retention.
In practice
An individual contract owner does not typically need to interact with persistency directly — it is a carrier-side metric — but the concept matters because it shapes product design choices that the contract owner does experience: surrender charge schedules, premium bonuses, and persistency-based rider features all reflect the carrier's persistency assumptions. Useful questions to ask the recommending party include: how the product's surrender charge schedule is structured and what behavior it is designed to encourage, what features of the contract reflect carrier persistency assumptions, and whether the contract has any persistency-based bonuses or features.
In the Longevity Standard Framework
Persistency is a carrier-side analytical metric outside the Longevity Standard framework's structural vocabulary. The framework characterizes lifetime income arrangements through the four claim properties — risk sharing, adjustment mechanism, liquidity, cost structure — and the cost-of-income comparison; it does not characterize the operational metrics through which carriers manage their portfolios. Persistency assumptions are embedded in the carrier's pricing and therefore appear indirectly in the cost-structure values that the framework characterizes — embedded spread, crediting parameter drag, and guarantee charges all reflect, among other things, the carrier's assumptions about how long contracts will remain in force — but persistency itself operates at the carrier-portfolio level rather than at the level of the individual claim's structural properties.
Related terms
- Lapse
- Surrender charge
- Surrender period
- Carrier renewal rate practices
- Cost structure
- Embedded spread
- Insurance company