What it means
The product is best understood as buying a personal pension from an insurance company. You convert a pot of savings into a stream of payments, and the insurer takes on the risk that you live longer than expected, which is the one financial risk most people cannot diversify away themselves.
Pricing depends on three things: your age, the interest rates available when you buy, and the options you attach. An older buyer receives a higher annual payment because the expected payment period is shorter, and a purchase made when long-term bond yields are high locks in a better rate for life.
The options matter enormously to the headline figure. A single life annuity pays the most, a joint life version continuing to a surviving spouse pays less, and adding inflation protection or a guaranteed minimum payment period reduces the starting income further.
Each feature is real value, but it is paid for out of the same lump sum. The central trade-off is certainty against flexibility.
Once the premium is paid the money is generally gone, so an unexpected medical bill or a change of plan cannot be funded from that capital. Most advisers therefore suggest annuitising only enough to cover essential fixed costs and keeping the rest invested and accessible.
The comparison people usually miss is against simply drawing down a portfolio. Drawdown keeps the capital and any growth for the estate, but it carries the risk of running out of money, whereas the annuity removes that risk and hands it to the insurer.
Which is better depends less on arithmetic than on how much a guaranteed floor is worth to the household.
In practice
Real-world examples.
Example
A retiring teacher works out that his essential monthly costs, housing, utilities, food and insurance, come to $2,400 and his state pension covers $1,000 of it. He buys an immediate payment annuity large enough to produce the missing $1,400 a month and leaves the remainder of his savings invested for discretionary spending.
Example
A woman receives a $500,000 settlement after a workplace injury and is worried about managing a large sum she has never handled before. Her adviser recommends annuitising $250,000 for lifetime income and holding the balance in a mix of cash and bond funds for emergencies.
Example
A family business owner sells his company and wants a predictable base income while he decides what to do next. He buys a ten-year period certain annuity rather than a lifetime one, which pays a fixed sum each month for a decade and ends, matching the length of time he expects to spend on a second venture.
Formula
Calculation
The headline relationship is: Annual income = premium x payout rate, where the payout rate is the percentage of capital the insurer will pay each year for the chosen structure.
A 68-year-old buys a single life immediate payment annuity with no inflation protection. She pays a premium of $300,000, and the insurer quotes a payout rate of 6.4%.
Annual income = $300,000 x 6.4% = $19,200 per year.
Monthly income = $19,200 / 12 = $1,600 per month.
Simple capital payback period = $300,000 / $19,200 = 15.6 years, so she recovers her original outlay in nominal terms shortly after her 83rd birthday, and every payment after that is the insurer's risk rather than her capital.
If she instead chose a joint life version continuing at the same level to her husband, the payout rate might drop to about 5.4%, giving $16,200 a year. The $3,000 annual difference is the price of covering two lives instead of one.Case study
Seen in the real world.
The following case is illustrative and the company described is fictional. Marlow Field Advisors, an invented independent advice firm, reviewed a client couple both aged 70 with $840,000 in retirement savings and a strong preference for never running short of money.
The firm modelled two approaches. Full annuitisation at a joint life payout rate of about 5.2% would have produced roughly $43,680 a year for life, but left nothing accessible for home repairs, care costs or gifts to their children. A pure drawdown plan preserved flexibility but showed an uncomfortable chance of depletion if markets performed poorly in the first decade.
The illustrative recommendation was a partial annuity. The couple used $320,000 to buy an immediate payment annuity producing about $16,640 a year, which, added to their state benefits, covered every essential household cost. The remaining $520,000 stayed invested for growth and emergencies, and the fictional review noted that the couple's reported anxiety about markets fell sharply once the fixed costs were guaranteed.
Watch out
Common mistakes.
- Shopping on the headline payout rate alone without checking whether the quote is single or joint life, level or inflation-linked, and whether any minimum payment period is included.
- Annuitising the entire retirement pot, which leaves no liquid capital for medical costs, home repairs or any change of circumstances.
- Assuming a level annuity keeps its value, when 3% inflation cuts the buying power of a fixed payment by roughly a third over fifteen years.
Questions
People also ask.
What happens to my money if I die early?
That depends on the options you bought, because a plain single life annuity stops on death, while a guaranteed period or a return of premium feature pays a balance to your estate at the cost of a lower income.
How is an immediate annuity different from a deferred one?
An immediate annuity starts paying within about a year of purchase, whereas a deferred annuity accumulates first and begins income years later, often producing a higher eventual payment.
Is the income guaranteed absolutely?
It is guaranteed by the insurer rather than by a government, so the strength of the issuing company matters, which is why buyers are advised to check credit ratings and spread very large purchases across more than one provider.
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