The Core Difference: Who Manages Your Money

A pension is a monthly payment your employer promises to give you after you retire, based on how long you worked there and what you earned. Your employer puts money into a fund during your working years, a professional manager invests that money, and when you retire, the company sends you a check every month for life. You do not pick investments or manage the account.

A 401(k) is a savings account you control. You choose how much of your paycheck goes into it (up to a legal limit), you pick which investments to buy with that money, and the balance is yours to keep or move if you change jobs. When you retire, you decide when and how much to withdraw. Your employer may add matching money, but the account belongs to you, not the company.

The practical result: with a pension, your employer takes the investment risk. With a 401(k), you do. If the pension fund's investments lose money, you still get your promised payment. If your 401(k) investments lose money, your retirement savings shrink.

Key Takeaways

  • A pension pays you a fixed monthly amount for life after retirement; a 401(k) is a personal savings account you manage and can withdraw from whenever you choose.
  • Pensions are funded and invested by your employer; 401(k)s are funded by your contributions and employer match, with you choosing the investments.
  • Pension payments are may provide regardless of market performance; 401(k) balances rise and fall with your investment choices and market conditions.
  • Pensions are rare in private companies today but common in government and some large employers; 401(k)s are the standard retirement plan for most private-sector workers.
  • If you leave a job with a pension, you typically cannot take the money with you; if you leave a job with a 401(k), you can roll it to a new employer's plan or an individual account.

How Money Goes In: Contributions and Employer Funding

With a pension, your employer contributes a percentage of your pay into the pension fund automatically. You may or may not contribute your own money, depending on the plan. The employer decides the contribution amount based on actuarial calculations — estimates of how long you will live, how much the fund will earn, and what your monthly payment should be. You have no choice in how much goes in or where it is invested.

With a 401(k), you decide what percentage of your paycheck to contribute, up to $23,500 per year (as of 2024; this limit changes yearly). Your employer may match a portion of what you contribute — for example, 50 cents for every dollar you put in, up to 6% of your salary. That match is assistance programs, but you only get it if you contribute first. You then choose from a menu of investment options — usually mutual funds, target-date funds, or stable value funds — and direct your contributions into those choices.

How Money Grows: Investment and Risk

Pension funds are invested by professional money managers hired by the employer. The fund holds stocks, bonds, real estate, and other assets. If the fund earns 8% one year and loses 2% the next, that does not change your promised monthly payment. The employer absorbs the gains and losses. If the fund falls short of what is needed to pay all pensions, the employer must contribute more money to make up the difference — or, in rare cases, the Pension Benefit Guaranty Corporation (a federal insurance program) steps in to cover part of the shortfall.

A 401(k) grows only based on what you and your employer contribute plus the returns on your chosen investments. If you invest in a stock fund and the market drops 20%, your 401(k) balance drops 20%. If you invest in a bond fund that earns 3%, your balance grows 3%. You see the gains and losses in real time. There is no employer may provide and no federal insurance if your investments perform poorly.

What You Receive in Retirement: Payment Structure

A pension typically pays you a monthly amount for as long as you live. The amount is calculated using a formula based on your years of service and your final average salary. For example, a common formula is 2% of your final average salary multiplied by your years of service. Someone who worked 25 years and had a final average salary of $60,000 would receive roughly $30,000 per year ($2,500 per month). That payment does not change, and it does not run out.

A 401(k) is a lump sum that belongs to you. You can withdraw it all at once (though taxes and penalties may apply), take monthly withdrawals of any amount, or leave it untouched. There is no may provide it will last your whole life — if you withdraw too much too fast, you can run out of money. You can also convert part of it to an annuity, which works like a pension and pays you a fixed monthly amount, but that is your choice to make.

Portability: What Happens When You Change Jobs

If you leave a job where you have a pension, you typically cannot take the money with you. You have two main options: leave it in the pension fund and collect your monthly payment starting at retirement age (usually 65), or take a lump-sum payment if the plan allows it. The longer you wait to start collecting, the larger your monthly payment will be. If you die before retirement, your beneficiary may receive a small death benefit, but the bulk of the money stays with the employer's pension fund.

If you leave a job with a 401(k), the money is yours to move. You can roll it into your new employer's 401(k) plan, move it to an individual retirement account (IRA), or leave it with your former employer if the balance is large enough. You control the money and can take it with you from job to job. This portability is one reason 401(k)s became popular — workers can accumulate retirement savings across multiple employers.

Taxes and Withdrawals: When You Pay

Pension payments are taxed as ordinary income in the year you receive them. If you receive $2,500 per month, you owe federal income tax on that $30,000 per year. Some pensions offer a choice of how to receive payments — a single life annuity (higher monthly payment, stops when you die) or a joint-and-survivor annuity (lower monthly payment, continues to your spouse after you die). The choice affects your tax bill and your beneficiary's security.

401(k) withdrawals are also taxed as ordinary income, but you control the timing and amount. If you withdraw money before age 59½, you typically owe a 10% penalty plus income tax, with some exceptions (hardship, disability, or specific circumstances). Once you turn 73, you must take a minimum withdrawal each year, whether you need the money or not. If you leave the money untouched and die, your beneficiary inherits it and owes taxes on withdrawals, but the money does not disappear.

Availability Today: Which Plans Still Exist

Pensions are rare in private companies. Most large corporations eliminated them in the 1980s and 1990s and replaced them with 401(k)s. Today, pensions are common in government jobs (federal, state, and local), the military, some unions, and a shrinking number of large private employers. If you work for a city, county, state, or federal agency, you likely have a pension. If you work for a private company, you almost certainly have a 401(k) or similar plan.

Some employers offer both — a small pension plus a 401(k). A few offer a cash-balance plan, which is a hybrid: it looks like a 401(k) on paper (you have an individual account), but the employer guarantees a minimum return, so it carries some of the security of a pension. The specifics vary widely by employer and industry.

Frequently Asked Questions

Can I move a pension to a 401(k) or IRA?

In most cases, no. Once you are vested in a pension (usually after 5 to 10 years), the money stays in the pension fund. Some plans allow you to take a lump-sum payment instead of monthly payments, and you can then roll that lump sum into an IRA. Ask your pension plan administrator whether a lump-sum option exists and what the rules are.

What if I die before I start collecting my pension?

It depends on the plan. Some pensions pay a small death benefit to your beneficiary; others pay nothing if you die before retirement. A few plans let you choose a joint-and-survivor option, which means your spouse continues to receive a reduced payment after you die. Review your plan documents or ask your employer's benefits office what happens to your pension if you pass away before retirement.

Is a 401(k) safer than a pension?

A pension is safer in the sense that your payment is may provide and does not depend on investment performance. A 401(k) is safer in the sense that the money is yours to keep and move if you change jobs. With a pension, if your employer goes bankrupt, the federal Pension Benefit Guaranty Corporation may cover part of your payment, but not all. With a 401(k), your money is protected by law even if your employer fails.

Can I have both a pension and a 401(k)?

Yes. Some employers offer both plans, and some workers have a pension from one job and a 401(k) from another. If you work for government, you may have a pension; if you also have a side job in the private sector, you may have a 401(k). The rules for how much you can contribute to each vary, so check with your employer or a tax professional.

What is the best plan for retirement?

A pension is better if you want may provide income for life and do not want to manage investments. A 401(k) is better if you want control over your money, flexibility in withdrawals, and the ability to move it between jobs. Most workers today have only a 401(k), so the choice is not yours to make — it depends on your employer.