Most pensions do not run out during your lifetime, but some do

Whether your pension runs out depends entirely on what kind of pension you have. A defined benefit pension — the kind many government and union workers receive — pays you a fixed monthly amount for as long as you live, no matter how long that is. The employer or pension fund bears the risk if you live longer than expected. A defined contribution pension, which includes most 401(k)s and IRAs, works differently: you have a pot of money, and once you start withdrawing from it, the pot shrinks. If you withdraw too much too fast, it can run out before you die.

The distinction matters because it changes what you need to plan for. With a defined benefit pension, you know your payment will arrive every month for life. With a defined contribution plan, you need to manage how much you take out each year so the money lasts as long as you do.

Key Takeaways

  • Defined benefit pensions (traditional pensions) never run out — they pay you monthly for life regardless of how long you live.
  • Defined contribution plans (401(k)s, IRAs) are a pool of money that shrinks as you withdraw from it and can be depleted if withdrawals are too large.
  • The IRS requires you to take minimum withdrawals from most retirement accounts starting at age 73, which affects how long the money lasts.
  • If a defined contribution plan runs out, you still have Social Security and any defined benefit pension, but no further withdrawals from that account.
  • Annuities can convert a lump sum into a may provide monthly payment for life, similar to a pension.

How defined benefit pensions work — the money never stops

A defined benefit pension is a promise from an employer or government to pay you a set amount each month for the rest of your life. The pension fund invests money to make sure it can keep that promise. You do not own a pot of money; you own a right to a payment. The fund's job is to make sure the payment arrives, whether you live to 80 or to 105.

This is why defined benefit pensions are considered more secure than defined contribution plans. The risk of living longer than your money lasts belongs to the pension fund, not to you. If you receive a pension of $2,000 per month at age 65, you will receive $2,000 per month at 85, 95, or beyond, assuming the pension fund remains solvent. The only way a defined benefit pension stops is if the fund fails — which is rare in the United States because the Pension Benefit Guaranty Corporation (PBGC) insures most private pensions and many public pensions have dedicated tax revenue backing them.

How defined contribution plans work — the account balance matters

A defined contribution plan is a retirement account with a balance. You (and sometimes your employer) put money in, the money grows through investment returns, and then you withdraw from it. Unlike a pension, there is no promise of a set monthly payment. The account can grow or shrink depending on investment performance and how much you withdraw.

When you retire and start taking withdrawals, the account balance goes down. If you withdraw $30,000 per year from a $500,000 account, the balance drops by $30,000 each year (before investment gains or losses). If the account earns 5 percent annually, the earnings partially offset the withdrawals. But if you withdraw too much, or if investment returns are poor, the balance can reach zero before you die.

The IRS sets rules about how much you must withdraw. Starting at age 73, you must take a required minimum distribution (RMD) each year based on your age and account balance. The RMD percentage increases as you age. At 73, the percentage is roughly 3.65 percent of your balance; at 85, it rises to about 5.85 percent. These rules exist to ensure the government eventually collects taxes on the money, but they also mean you cannot simply leave the account untouched to make it last longer.

What happens if a defined contribution account runs out

If you deplete a 401(k) or IRA before you die, you can no longer withdraw from that account. The account is empty. However, you still have other income sources: Social Security (if you are receiving it), any defined benefit pension, and any other savings or income you have outside retirement accounts.

Running out of a defined contribution plan is not uncommon, especially for people who retire early, live longer than expected, or face large unexpected expenses. It is not a legal problem — you are allowed to withdraw all your money — but it does mean you lose that income stream. This is why financial advisors often recommend calculating how much you can safely withdraw each year (a common rule is 4 percent of your starting balance annually) and sticking to it.

If you have a large lump sum from a pension or 401(k) and are worried about running out, you can convert part or all of it into an annuity. An annuity is a contract with an insurance company that pays you a fixed amount each month for life, similar to a pension. You give the insurance company a lump sum, and they take on the risk that you will live longer than expected.

How investment returns affect how long the money lasts

The performance of your investments directly affects whether a defined contribution account runs out. If your account is invested in stocks and bonds, the value fluctuates. A strong market year means your balance grows even as you withdraw from it. A weak year means your balance shrinks faster.

This is why the timing of market downturns matters. If you retire and the market drops 20 percent in your first year of withdrawals, your account takes a double hit: the balance falls due to the market decline, and you are also withdrawing money. This combination can deplete an account much faster than expected. Conversely, if you retire into a strong market, your withdrawals have less impact because investment gains offset them.

Some people reduce this risk by keeping a portion of their retirement money in cash or bonds rather than stocks, so they can withdraw from the stable portion during market downturns and let stocks recover. Others use a dynamic withdrawal strategy where they take less in down years and more in up years.

Pensions from government and union jobs usually do not run out

Government employees, teachers, police officers, and many union workers receive defined benefit pensions. These pensions are typically backed by the government or union, which has the power to raise taxes or dues to fund them. A teacher's pension of $3,000 per month at age 55 will continue for life, even if the teacher lives to 100.

The security of these pensions varies by jurisdiction and by the health of the pension fund. Some state and local pension funds are well-funded; others face long-term shortfalls. However, even underfunded pensions rarely stop paying current retirees. Instead, they may reduce benefits for future retirees or ask current employees to contribute more. The PBGC does not insure public pensions, but most states have constitutional protections for pension payments, making them difficult to cut.

Frequently Asked Questions

Can my pension stop if the company goes out of business?

If you have a defined benefit pension from a private company, the PBGC steps in if the company fails. The PBGC will continue your pension payments, though there are limits on how much it will pay (the maximum varies by age and year, but is typically in the range of $5,000 to $6,000 per month). Government and union pensions are not covered by the PBGC but are usually backed by tax revenue or union funds.

What is the 4 percent rule, and does it really work?

The 4 percent rule suggests withdrawing 4 percent of your retirement account balance in your first year of retirement, then adjusting that dollar amount for inflation each year. Historical data suggests this approach has a high probability of lasting 30 years, but it is not may provide. It works better for some people than others depending on market timing, life expectancy, and unexpected expenses.

If I have both a pension and a 401(k), which runs out first?

Your pension never runs out — it pays for life. Your 401(k) is a separate account that can run out if you withdraw too much. You control the 401(k) withdrawals, so you decide how fast to use that money. Many people use their 401(k) first and let their pension provide a stable base income for life.

Can I convert my 401(k) into a pension-like payment?

Yes, through an annuity. You can use part or all of your 401(k) balance to buy an annuity from an insurance company, which then pays you a fixed amount each month for life. The amount depends on your age, the lump sum you invest, and current interest rates. This converts your account balance into a may provide lifetime payment, similar to a pension.

What happens to my pension if I die before I start collecting it?

This depends on your pension plan's rules. Some pensions pay a survivor benefit to your spouse or children. Others pay a lump sum to your estate. Some pay nothing if you die before reaching retirement age. You should review your pension plan documents or contact your pension administrator to understand what happens to your specific pension.