Glossary term

In-Plan Annuity

An in-plan annuity is an annuity option offered inside a workplace retirement plan to convert some plan savings into guaranteed lifetime income.

Updated

May 17, 2026

Read time

2 min read

What Is an In-Plan Annuity?

An in-plan annuity is an annuity option offered inside a workplace retirement plan, such as a 401(k), that can convert some plan savings into guaranteed income. The income may begin at retirement or later, depending on the product and plan design.

The goal is to give participants a way to turn account balances into lifetime income without leaving the plan environment immediately. The details depend heavily on the insurer, contract, fees, payout options, portability rules, and plan fiduciary process.

Key Takeaways

  • An in-plan annuity is offered inside a workplace retirement plan.
  • It can help convert part of a defined contribution account into lifetime income.
  • The guarantee depends on the issuing insurance company and contract terms.
  • Fees, liquidity, survivor options, inflation protection, and portability are central review points.

How It Fits Inside a 401(k)

A traditional 401(k) account is usually framed as an investment balance. An in-plan annuity adds an income feature by allowing participants to allocate some money to an insurance contract or lifetime income option within the plan.

The participant may see the option as part of the investment menu, a retirement-income feature, or a distribution option. The plan may also provide lifetime income illustrations that estimate how an account balance could translate into monthly income.

Feature

What to Review

Guarantee

What income is promised and by whom?

Fees

How are insurance, investment, and administrative costs charged?

Liquidity

Can money be moved, surrendered, or rolled over?

Survivor options

Will income continue for a spouse or beneficiary?

Portability and Income Tradeoffs

An in-plan annuity can help address longevity risk, but it can also reduce flexibility. Participants should understand whether the annuity can move if they change jobs, whether the plan changes providers, or whether the employer removes the option.

The decision is not simply annuity versus no annuity. It is how much guaranteed income the household needs, what other guaranteed sources exist, and whether the contract's costs and restrictions are worth the income protection.

The Bottom Line

An in-plan annuity brings lifetime income features into a workplace retirement plan. It can help turn savings into retirement income, but the guarantee, fees, liquidity, portability, and survivor options deserve careful review.

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