When people ask about putting a 401(k) or IRA into an annuity, they are almost always talking about a qualified rollover: pre-tax retirement money moving from one tax-deferred account into another one that happens to be an annuity. That is a different transaction from buying an annuity with money sitting in a savings or brokerage account, which uses dollars you have already paid taxes on. The confusion between the two is where most bad advice starts, because the tax treatment on the way out is not the same.
If you are still working out the basics of how annuities work, read that first. This piece assumes you already know the product and want to know how the money actually gets there.
What "converting" a 401(k) or IRA into an annuity actually means
Nothing gets converted in the literal sense. You open an IRA annuity with an insurance carrier and move funds into it. There are two ways to do that.
A direct rollover, also called trustee-to-trustee, is where your current custodian sends the money straight to the insurance company. You never take possession, no 1099-R distribution is triggered, and nothing is withheld. This is the version you want in nearly every case.
An indirect rollover is where the plan cuts a check to you and you have 60 days to deposit the full amount into the new account. Employer plans are generally required to withhold 20 percent for taxes on that check, which means you have to make up the withheld amount out of pocket to redeposit the full balance. Miss the 60-day window and the whole thing becomes a taxable distribution, plus a 10 percent penalty if you are under 59 and a half. There is very little upside to doing it this way.
Why someone would do this
The main reason is an income floor. A 401(k) balance is a number that moves with the market. An annuity turns part of that number into a payment that arrives whether the market is up or down. Retirees without a pension often want their fixed monthly costs, housing, insurance, food, covered by Social Security plus guaranteed income, and the rest left invested.
The second reason is removing market risk from a portion of savings, not all of it. Someone five years from retirement with a heavy equity allocation may move a slice into a MYGA for a guaranteed rate over a defined term, and keep the rest where it is.
What this does not do is get you out of required minimum distributions. If anyone frames a rollover as a way to avoid RMDs, that is a reason to end the conversation. The account stays qualified, and the RMD rules follow it.
What stays the same, what changes
What stays the same: the money is still pre-tax retirement money. Every dollar you withdraw is taxed as ordinary income, exactly as it would have been from the original traditional IRA or 401(k). RMDs still apply once you reach your required beginning age, and the annuity balance still counts in your RMD calculation. Beneficiary rules still follow retirement account rules, not life insurance rules.
What changes: liquidity and the shape of the return. Most annuities carry a surrender schedule, commonly 5 to 10 years, with a free-withdrawal allowance of around 10 percent of the account value each year. In exchange you get a contractual rate or an income guarantee instead of a market return. That tradeoff is the entire decision, and it is why the portion you move should be sized against the rest of your retirement income plan rather than chosen at random.
Common mistakes
Rolling the full balance. This is the most frequent one. Once the money is inside a surrender period, your flexibility is limited for years. Most retirees are better served moving a portion, often somewhere between a quarter and a half of the balance, and keeping liquid assets outside the contract for emergencies and large one-time expenses.
Not comparing surrender schedules. Two contracts paying similar rates can have very different exit terms, one with a 7-year declining charge and another with a 10-year schedule and a market value adjustment. Ask for the schedule in writing before you sign anything.
Doing an indirect 60-day rollover badly. Taking the check, spending part of it, or missing the deadline turns a non-event into a taxable distribution. Request the direct transfer and let the two institutions handle it.
Assuming one carrier's quote is the market. Rates and income guarantees vary meaningfully between carriers on the same day, which is why comparing more than one offer matters.
FAQ
Is converting a 401(k) to an annuity a taxable event?
Not if it is done as a direct trustee-to-trustee rollover into a qualified annuity, such as an IRA annuity. The money never touches your hands, so nothing is reported as a distribution. It becomes taxable if you take the check yourself and fail to redeposit the full amount within 60 days.
Can I convert only part of my 401(k) or IRA?
Yes. Partial rollovers are common and usually the smarter approach. Many retirees move only the portion they want turned into guaranteed income and leave the rest invested for growth and liquidity.
Do RMD rules still apply after the money is in an annuity?
Yes. Moving pre-tax retirement money into an annuity does not remove required minimum distributions. The account is still a qualified account, and RMDs apply on the same schedule. Some products are designed so the income payments satisfy the RMD on that account, which is a detail to confirm with the carrier and your tax professional.
What's the difference between a qualified and non-qualified annuity?
A qualified annuity is funded with pre-tax retirement money from a 401(k) or traditional IRA, so the entire withdrawal is taxable as ordinary income. A non-qualified annuity is funded with money you have already paid taxes on, so only the growth portion is taxed when you withdraw.
Rollover mechanics are a tax question as much as a product question. Confirm the steps with a tax professional before you move retirement funds, so the paperwork matches the outcome you expect.