What Is an Annuity and How Does an Annuity Work for Retirement?



An annuity is a long-term contract between you and an insurance company designed to help grow assets, create predictable income, or both. You contribute a lump sum or series of payments (called premiums), and in return, the insurer provides growth, income, or future payouts based on the contract you select.

Annuities are commonly used to supplement retirement income, reduce longevity risk, and add stability to a broader financial plan. 

Funds inside an annuity grow tax-deferred, meaning you don’t pay taxes on earnings until money is withdrawn. Withdrawals taken before age 59½ may be subject to a 10% federal penalty in addition to ordinary income taxes.


How Do Annuities Work?

Annuities generally operate in two phases:

1. Accumulation Phase
During this phase, your premium grows based on the annuity’s crediting method—fixed interest, indexed interest, or market-based returns—depending on the product type.

2. Distribution (Income) Phase
At a future date, you can:

  • Take withdrawals as needed
  • Activate guaranteed lifetime income
  • Annuitize the contract into a predictable payment stream
  • Leave remaining value to beneficiaries

Annuities can be immediate (income starts right away) or deferred (income begins later). 


When Are Annuities Most Appropriate?   

Annuities are typically most effective when:

  • Core retirement vehicles (401(k), IRA) are already funded
  • You want income you can’t outlive
  • Tax deferral is valuable due to a higher tax bracket
  • You want protection from market volatility
  • You need predictable income between ages 65–85+

They are not “one-size-fits-all” solutions and should be coordinated within a broader retirement income strategy.

How Do Fixed Annuities Work?

Traditional Fixed Annuities
Traditional fixed annuities credit a declared interest rate, usually set annually, with a contractual minimum guarantee.

Key benefits:

  • Predictable growth
  • Principal protection
  • Higher minimum guarantees than indexed annuities
  • May allow additional contributions

Considerations:

  • Rates may be unattractive during low-rate environments
  • Availability fluctuates with interest rate cycles

MYGAs (Multi-Year Guaranteed Annuities)

MYGAs function similarly to CDs—but with tax deferral.

Key features:

  • Guaranteed rate for a fixed term (e.g., 3, 5, 7 years)
  • No annual taxation on interest
  • Typically higher yields than CDs
  • No internal fees
  • Often allow 5–10% annual penalty-free withdrawals

Considerations:

  • Surrender charges apply if funds are withdrawn early
  • Some contracts auto-renew unless action is taken

How Do Fixed Indexed Annuities (FIAs) Work?

Fixed Indexed Annuities link interest credits to an external index (such as the S&P 500) without direct market exposure.

You benefit from market gains—subject to caps or participation rates—while being protected from market losses.

Key benefits:

  • Principal protection
  • Tax-deferred growth
  • Optional guaranteed lifetime income riders
  • Low or no internal fees (unless riders are added)

Some FIAs offer uncapped participation rates, while others use caps. Income riders grow an “income base” used to calculate lifetime payouts.

FIAs are commonly used to:

  • Create pension-like income
  • Hedge sequence-of-returns risk
  • Provide growth without market loss exposure

What Is a Variable Annuity?

A variable annuity invests in sub-accounts similar to mutual funds and offers market-based growth with tax deferral.

Key characteristics:

  • Considered a security
  • Principal is at risk
  • Income and account value fluctuate with markets
  • Often includes optional income or death benefit riders

Considerations:

  • Higher fees (M&E charges, fund expenses, rider fees)
  • Greater complexity

Best suited for investors comfortable with market risk

What Is a Single Premium Immediate Annuity (SPIA)?

A SPIA converts a lump sum into immediate income, that can be deferred up to 12 months.

Key benefits:

  • High payout rates
  • Guaranteed income for life or a set period
  • Ideal for covering essential expenses

Important notes:

  • No growth component
  • Income is largely a return of principal initially
  • Life-only payouts provide the highest income but no death benefit

If funded with non-qualified assets, a portion of each payment may be tax-free under the exclusion ratio.

What Is a Deferred Income Annuity (DIA)?

A Deferred Income Annuity allows you to purchase income today that begins far in the future—sometimes decades later.

Benefits:

  • Very high future income payouts
  • Efficient longevity protection
  • Ideal for later-life income planning

DIAs are less common but can play a powerful role in long-term retirement strategies.

What Is a Qualified Longevity Annuity Contract (QLAC)?

A QLAC is a type of DIA funded with qualified retirement assets (IRAs, some 401(k)s).

Key advantages:

  • Defers required minimum distributions (RMDs)
  • Income can begin as late as age 85
  • Reduces longevity and RMD risk

QLACs are subject to IRS contribution limits and specific rules.

Final Thoughts

Annuities are tools—not strategies by themselves. When properly structured, they can:

  • Provide guaranteed lifetime income
  • Reduce market volatility exposure
  • Improve tax efficiency
  • Strengthen retirement confidence

The key is selecting the right annuity for the right purpose.

👉 View current fixed annuity and MYGA rates here: Top Annuity Rates