Definition
Liquidity is the structural property of a claim that specifies what rights the participant retains over the underlying capital, with four possible values: full, partial, conditional, or none.
Why it matters
Lifetime income arrangements differ substantially in how much access to the underlying capital the participant retains. The liquidity property names this difference structurally. Because liquidity is independent of the other three properties, two arrangements with similar risk-sharing and adjustment-mechanism profiles can offer very different liquidity terms — and the difference matters more in some life situations than the income comparison alone reveals.
How it works
Liquidity takes one of four values. Full — the participant retains unrestricted access to the capital throughout the arrangement, and can withdraw any portion at any time; this is the structure of solo drawdown. Partial — some pool designs allow withdrawal of a portion of the capital, often subject to a haircut that reflects the actuarial value the withdrawing member is removing from the pool. Conditional — capital access is available but subject to constraints, typically a surrender schedule with declining penalties over time; this is the structure of a variable annuity, a fixed indexed annuity, and most deferred annuities during the surrender period. None — capital access is irrevocably extinguished at issue, with no withdrawal right; this is the structure of a SPIA and a DIA, where the premium becomes the carrier's asset and the participant's rights are limited to the contractually scheduled income payments.
In practice
Liquidity is the property that most directly affects life flexibility — the ability to handle a medical event, a family situation, a change in plans. An individual evaluating a lifetime income arrangement should be able to name explicitly which of the four liquidity values applies to it, and to identify what events in the next twenty or thirty years could plausibly require capital access that the arrangement would not allow. The conventional advisor framing — “would you be comfortable not being able to access this money?” — is a partial version of the question. The fuller question is which scenarios make capital access necessary and how the arrangement responds to each. In the DC plan context, liquidity is closely related to portability, because both bear on whether the participant retains rights over the capital across changing circumstances; a plan fiduciary considering an in-plan lifetime income option should evaluate liquidity at the participant level, not at the plan level.
In the Longevity Standard Framework
Liquidity is one of four claim properties in the Longevity Standard framework. The four properties — risk sharing, adjustment mechanism, liquidity, cost structure — together characterize any lifetime income arrangement structurally. Liquidity and cost structure together describe what the claim means for the participant commercially — the experiential pair of the four-property framework, distinct from the structural pair (risk sharing and adjustment mechanism). The liquidity property is independent of the other three properties — any combination is structurally possible — which is why the four properties are evaluated separately rather than collapsed into a single rating.
Related terms
- Risk sharing
- Adjustment mechanism
- Cost structure
- Surrender charge
- Surrender period
- Free withdrawal provision
- Portability
- Cash value