A traditional defined benefit pension does not run out. It is designed to pay you a set monthly amount for the rest of your life, and the employer is legally on the hook to keep those checks coming no matter how long you live. Account-based retirement plans like 401(k)s are a different story: they hold a fixed pool of money that can be spent down to zero. So when people ask do pensions run out, the honest answer depends on which kind of plan you have, how you choose to take the money, and whether a few specific risks apply to your situation.
Why a Defined Benefit Pension Is Built to Last for Life
A defined benefit pension creates a binding obligation for your employer to pay you a specific monthly amount for life. Your employer carries all of the investment risk. If the plan’s investments lose money, that is the employer’s problem to solve, not yours, and the monthly check does not shrink to match.
The payment itself is usually set by a formula: years of service multiplied by a fixed percentage (often 1% to 2%) multiplied by your average salary near the end of your career. Someone with 30 years of service, a 1.5% multiplier, and a final average salary of $60,000 would receive $27,000 a year. Once that amount is calculated, it generally does not decrease.
Federal law also requires employers sponsoring these plans to make minimum contributions each year, based on actuarial projections of what the plan will need to cover every future payment.1Office of the Law Revision Counsel. 29 U.S. Code 1083 – Minimum Funding Standards for Single-Employer Defined Benefit Pension Plans The funding rules exist precisely to keep the plan from running dry while retirees are still collecting.
When a Pension Can Still Fail You
The lifetime guarantee comes with conditions. Miss one and the money can stop, shrink, or never arrive in the first place.
You Have to Be Vested
Before the pension is truly yours, you have to work long enough to earn a nonforfeitable right to it. Leave too early and you walk away with nothing from the employer-funded portion, no matter how good the formula looked.2Office of the Law Revision Counsel. 29 U.S. Code 1053 – Minimum Vesting Standards
Federal law lets employers pick between two schedules for defined benefit plans. Cliff vesting gives you nothing until you hit five years of service, then makes you 100% vested all at once. Graded vesting starts you at 20% after three years and steps up until you reach 100% after seven years. A plan can vest you faster, never slower.3U.S. Department of Labor. FAQs About Retirement Plans and ERISA Cash balance plans, a hybrid form, vest employer contributions after three years. Anything you contributed from your own paycheck is always 100% yours immediately.
You Take a Lump Sum Instead of Monthly Payments
At retirement you typically get to choose between receiving your pension as recurring payments or as a single lump sum. That choice decides whether the money can run out at all.
Choosing an annuity keeps the plan’s guarantee intact. A straight-life annuity pays every month until you die. A period-certain annuity guarantees payments for a set number of years, often 10 or 20, and passes the remaining payments to a beneficiary if you die inside that window.4U.S. Bureau of Labor Statistics. You’re Getting a Pension: What Are Your Payment Options? Either way, the plan manages the money and the depletion risk stays with the plan.
A lump-sum payout hands you the entire present value of the pension in one transaction. From that moment on, making it last is your job. Spend too fast, invest poorly, or simply live longer than expected, and the funds can be exhausted.5Pension Benefit Guaranty Corporation. Annuity or Lump Sum Taking the lump sum converts a guaranteed lifetime pension into a self-managed account with all the same depletion risks.
Inflation Quietly Shrinks the Check
The dollar amount does not shrink, but its purchasing power can. Most private-sector pensions pay a fixed amount that never changes. Collect $2,000 a month from age 62 to 87 and that check buys far less at the end than at the start.
Some plans include a cost-of-living adjustment. Automatic adjustments raise the payment each year by a set percentage or formula. Ad hoc adjustments happen only if the plan’s governing body approves them in a given year. Many public-sector systems provide automatic increases; most private-sector plans provide none.
What Happens If the Plan Itself Fails
If your employer goes bankrupt or cannot fund its pension obligations, federal law provides a safety net. The Employee Retirement Income Security Act created the Pension Benefit Guaranty Corporation to insure private-sector defined benefit plans.6Office of the Law Revision Counsel. 29 U.S.C. 1302 – Pension Benefit Guaranty Corporation When a covered plan fails, the PBGC takes over and keeps paying benefits up to a legal maximum.
For 2026, the maximum monthly guarantee for a 65-year-old retiree receiving a straight-life annuity is $7,789.77. For a joint-and-50%-survivor annuity, the cap is $7,010.79. The limits adjust with your age at the time the plan fails; younger retirees receive less, older retirees more.7Pension Benefit Guaranty Corporation. Maximum Monthly Guarantee Tables If your earned benefit is below the cap, you get the full amount. If it is above the cap, your payment is reduced to the maximum.
The PBGC pays for this insurance with premiums collected from employers that sponsor covered plans, not from tax revenue.8Office of the Law Revision Counsel. 29 USC Ch. 18 – Employee Retirement Income Security Program Multiemployer plans, typically union-sponsored plans covering workers at several employers, are also insured, but with separate limits that are substantially lower than the single-employer caps above.
Plans the PBGC Does Not Cover
Two big categories sit outside the federal backstop. State and local government pension plans are exempt from ERISA and therefore not insured by the PBGC.9Office of the Law Revision Counsel. 29 U.S. Code 1003 – Coverage Public pensions instead rely on state constitutional protections, which vary widely in strength. In rare municipal bankruptcy cases, courts have found that federal bankruptcy law can override those state protections, potentially allowing pension cuts.
Church plans established by tax-exempt religious organizations are also generally uncovered. A church plan can voluntarily elect PBGC coverage, but most do not.10Pension Benefit Guaranty Corporation. PBGC Insurance Coverage If an uncovered church plan becomes underfunded or the sponsoring organization dissolves, participants have no federal insurance to fall back on and may see benefits reduced or lost entirely.
Account-Based Retirement Plans Can Definitely Run Out
Unlike a defined benefit pension, an account-based plan such as a 401(k) or 403(b) holds a fixed pool of money that can be depleted.11U.S. Department of Labor. Types of Retirement Plans The account is funded by contributions from you and often a matching amount from your employer, and its value rises and falls with the markets.12Internal Revenue Service. Retirement Topics – Contributions Once the balance hits zero, no further payments come.
Withdrawal Rate Is the Biggest Factor
The rate at which you draw down the account is the single biggest driver of how long it lasts. A widely cited guideline suggests withdrawing 4% in the first year of retirement, then adjusting the dollar amount slightly upward each year for inflation. Under favorable market conditions, that approach aims to make a portfolio last about 30 years. Retiring at the start of a major downturn can undermine even a conservative rate.
Withdrawing 7% or 8% a year while the account earns 4% steadily eats the principal. Fees compound the problem. Every dollar paid in expenses is a dollar not compounding for later.
Required Minimum Distributions
Even if you would rather leave the account alone, the IRS forces you to start taking money out at age 73. These required minimum distributions apply to traditional IRAs, 401(k)s, 403(b)s, and similar tax-deferred accounts.13Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs The required amount each year is calculated from your balance and life expectancy and grows as you age. Starting in 2033, the age rises to 75 for people who have not yet reached 73 by that date.
What Happens After the Retiree Dies
For a married participant, federal law makes the default payment form a qualified joint and survivor annuity. The plan pays a monthly benefit while both spouses are alive, then continues paying the surviving spouse at least 50%, and up to 100%, of that amount for the rest of their life.14Office of the Law Revision Counsel. 29 U.S.C. 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity Plans also have to offer a qualified optional survivor annuity: 75% if the default is 50%, or 50% if the default is 75% or higher.
Picking a single-life annuity, which pays a higher monthly amount but stops entirely at your death, requires your spouse’s written consent, witnessed by a plan representative or notary.14Office of the Law Revision Counsel. 29 U.S.C. 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity The consent requirement exists so a retiree cannot inadvertently, or intentionally, leave a spouse without pension income.
So the short version: a vested defined benefit pension taken as an annuity from a solvent, PBGC-covered plan will keep paying for as long as you live, and often for as long as your spouse lives after that. Change any of those conditions, or use a 401(k) instead, and the money can run out.