Why it matters
Annuitization is usually an irrevocable choice, so the owner generally gives up access to the lump sum. In return, the insurer promises payments that can last for life. The amount depends on the account value, age, payout option, and rates when payments start. Options include life only, period certain, and joint and survivor. Many owners choose not to annuitize and take withdrawals instead. Taxes apply to the earnings part of each payment.
Source: investor.gov
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