The Core Difference: Who Owns and Controls the Money

A pension is a monthly payment your employer (or former employer) sends you for life, based on how long you worked there and how much you earned. The employer owns the pension fund, manages the investments, and bears the risk if the fund runs short. You receive a fixed amount each month and have little control over it.

An annuity is a contract you buy from an insurance company, usually with your own money or a lump sum from a pension. You pay the insurance company upfront, and they send you monthly payments for a set period or for life. You own the annuity contract, you choose the terms when you buy it, and the insurance company bears the investment risk.

The practical difference: with a pension, your employer decides the payment amount and when it starts. With an annuity, you decide how much to spend, what payment schedule you want, and when to begin receiving money.

Key Takeaways

  • A pension is a benefit your employer provides and manages; an annuity is a contract you purchase from an insurance company.
  • Pension payments are set by your employer based on your salary and years of service; annuity payments depend on how much money you put in and the terms you choose.
  • With a pension, you have no say in the investment strategy or payment structure; with an annuity, you control when payments start and how long they last.
  • Pensions are protected by federal law (ERISA) and a government insurance program; annuities are regulated by state insurance departments and backed by the insurance company's reserves.
  • You can often convert a pension into an annuity by taking a lump sum, but you cannot convert an annuity back into a pension.

How Pension Payments Are Calculated

Your pension payment depends on three things: your salary when you left the job, how many years you worked there, and your employer's pension formula. Most private employers use a formula like 1.5% of your average salary times your years of service. So if you earned $50,000 on average and worked 30 years, your monthly pension would be roughly $1,875 (1.5% × $50,000 × 30 ÷ 12).

Government pensions often use different formulas. Some calculate 2% or 2.5% per year of service. A few allow you to retire at a certain age with a set percentage of your final salary, regardless of years worked.

Once your pension starts, the payment amount is usually locked in. Some pensions increase with inflation or cost-of-living adjustments (COLA), but many do not. You cannot change the payment amount or frequency after you begin receiving it.

How Annuity Payments Are Calculated

An annuity payment depends on how much money you invest, your age when you buy it, how long you want payments to last, and current interest rates. If you invest $300,000 at age 65 and buy a "life annuity" (payments for as long as you live), the insurance company calculates a monthly amount based on life expectancy tables and what they can earn on your money. The same $300,000 at age 70 would produce a higher monthly payment because life expectancy is shorter.

You choose the payment structure when you buy the annuity. You can select a "straight life" annuity (highest monthly payment, but nothing goes to heirs if you die early), a "period certain" annuity (payments for a fixed number of years), or a "joint and survivor" annuity (payments continue to your spouse after you die, but the monthly amount is lower).

Once you buy an annuity and payments begin, the amount stays the same unless you bought an inflation-adjusted annuity, which costs more upfront but increases payments over time.

Who Manages the Money and Takes the Risk

With a pension, your employer hires investment managers to grow the pension fund. If the fund performs poorly, the employer must still pay you the promised amount — that is the employer's legal obligation. If the fund runs out of money, the Pension Benefit Guaranty Corporation (PBGC), a federal agency, steps in and pays a portion of your pension (up to a legal limit that changes yearly, currently around $6,000 per month for someone who retired at 65).

With an annuity, the insurance company invests your money and keeps any returns above what they promised you. If the insurance company fails, your state's insurance guaranty fund covers losses up to a state-set limit, usually $250,000 per contract. This protection is weaker than the PBGC's may provide, so the insurance company's financial strength matters.

Flexibility and Control

Pensions offer little flexibility. You choose a payment option (usually "single life" or "joint and survivor") when you start receiving payments, but you cannot change it afterward. You cannot take a lump sum instead of monthly payments unless your employer offers that option. You cannot access the money early without penalties. If you die, your heirs receive only what your chosen payment option promised — often nothing if you chose single life.

Annuities offer more control upfront but less afterward. Before you buy, you decide the payment amount, the start date, how long payments last, and whether they adjust for inflation. Once you buy, you are locked in. Some annuities allow you to withdraw a portion of your money (with penalties), but most do not. If you die, your heirs receive any remaining balance if you chose a period-certain or joint-survivor option.

Tax Treatment

Pension payments are taxed as ordinary income in the year you receive them. If you contributed money to the pension yourself (some public pensions require this), part of your payment is tax-free. The IRS does not require you to take a pension payment at any specific age — once it starts, it continues.

Annuity payments are also taxed as ordinary income, but the tax treatment depends on whether you bought the annuity with pre-tax money (like a rollover from a 401(k)) or after-tax money. If you bought it with after-tax money, part of each payment is a return of your principal and is not taxed. If you bought it with pre-tax money, the entire payment is taxed.

If you are under 59½ and withdraw money from an annuity early, you may owe a 10% penalty plus income tax on the earnings portion.

Converting a Pension to an Annuity

Some employers offer a lump-sum option instead of monthly pension payments. If you take the lump sum, you can use it to buy an annuity from an insurance company. This is called a "pension rollover" or "pension buyout." The advantage is control — you choose the annuity terms and can leave any remaining balance to heirs. The disadvantage is that you take on investment risk; if you buy the annuity at the wrong time or choose poorly, your monthly income could be lower than the pension would have paid.

You cannot do the reverse: once you buy an annuity and payments begin, you cannot convert it back into a pension or access the principal.

Frequently Asked Questions

Can I receive both a pension and an annuity?

Yes. You might receive a pension from a former employer and also own an annuity you bought with your own savings or a lump-sum pension payout. Many people do both. The payments are separate and taxed separately.

What happens to my pension if my employer goes out of business?

The PBGC takes over the pension fund and pays you a may provide amount, currently up to about $6,000 per month depending on your age when you retired. If your pension was higher, you receive the PBGC limit instead. This protection does not apply to annuities.

Can I change my pension payment option after I start receiving it?

No. Once you choose a payment option (single life, joint and survivor, etc.), it is permanent. This is why the choice matters — you cannot undo it if circumstances change.

Is an annuity the same as a pension?

No. A pension is an employer benefit you earn through work; an annuity is an insurance contract you buy. They produce similar monthly payments, but the source, control, and protections are different.

What if I die shortly after my pension starts?

It depends on your payment option. If you chose "single life," your heirs receive nothing. If you chose "joint and survivor," your spouse continues receiving a reduced payment. With an annuity, the outcome depends on the terms you selected when you bought it.