Most workers don't choose between a pension and a 401(k) — they get what their employer offers and make the most of it. But "making the most of it" requires understanding what you actually have. Pensions are routinely undervalued. 401(k)s are routinely under-funded. And the workers who treat both as an afterthought pay for it in retirement.

This guide breaks down how each plan works, who still gets pensions, how to compare them head-to-head, and the mistakes that cost workers the most. If you have a pension, we'll also show you how to calculate its present value — because knowing what it's worth in today's dollars changes how you plan everything else.

What Is a Pension?

A pension — formally called a defined benefit plan — is a retirement plan where your employer funds a guaranteed monthly payment you'll receive for the rest of your life. The "defined benefit" is the payment itself: the employer promises a specific dollar amount based on a formula, typically involving your salary and years of service.

Here's the key mechanic: your employer takes on all the investment risk. Whether the stock market returns 15% or loses 20% in a given year, your pension payment doesn't change. The employer manages the money, and if the fund underperforms, the employer has to make up the difference.

A typical pension formula looks like this:

Annual benefit = 1.5% × years of service × final average salary

So a teacher with 30 years of service and a $70,000 final salary would receive: 1.5% × 30 × $70,000 = $31,500 per year for life. That's roughly $2,625 per month, guaranteed, for as long as they live — and in many plans, with cost-of-living adjustments (COLA) on top.

What Is a 401(k)?

A 401(k) is a defined contribution plan: the employee contributes a portion of their salary (up to IRS limits), the employer may match some portion, and the total grows based on investment returns. When you retire, you draw down from the balance you've accumulated.

The "defined contribution" is what goes in — not what comes out. The retirement income you get depends entirely on how much you contribute, how well the investments perform, and how you withdraw. You take on all the investment risk.

2026 contribution limits: $23,500 for employees under 50; $31,000 for those 50 and older (with the $7,500 catch-up). Employer match doesn't count toward your contribution limit.

Head-to-Head Comparison

Who Still Gets Pensions?

Private-sector pensions have declined sharply since the 1980s — but they haven't disappeared. If you work in any of these sectors, a pension is still very much on the table:

• Government workers — federal, state, and local employees; most have defined benefit plans. The federal FERS pension, state teacher retirement systems, and city employee pensions are among the most common.
• Military — after 20 years of service, military retirees receive 50% of their final base pay for life (rising 2.5% per year of service beyond 20).
• Union workers — many union contracts still include defined benefit plans, particularly in manufacturing, construction, and the trades.
• Large corporations — some major employers (Boeing, AT&T, Lockheed Martin, ExxonMobil) still maintain legacy pension plans, though most have been closed to new hires.

According to the Bureau of Labor Statistics, about 15% of private-sector workers and 86% of state and local government workers still have access to defined benefit pension plans. If you're in that group, your pension is likely your most valuable retirement asset — and the most underestimated.

The Hybrid Approach: Pension + Supplemental 401(k) or IRA

Many pension-eligible workers also have access to supplemental retirement accounts — a 403(b) or 457 plan for government workers, or a traditional 401(k) for some corporate employees. This is the best of both worlds:

• The pension provides a guaranteed income floor — you know exactly what you'll receive each month regardless of market conditions.
• The supplemental account provides flexibility and growth — it can cover variable expenses, large purchases, healthcare costs, and anything the pension doesn't fully cover.

The classic mistake: workers with pensions treat the supplemental account as optional and contribute little or nothing. Then they retire and discover that a $2,500/month pension covers the basics but leaves no cushion for emergencies, travel, or the rising cost of healthcare in their 70s and 80s. If you have a pension, your supplemental account should still be funded aggressively — at minimum to the employer match, and ideally to the IRS limit.

If you don't have access to a 401(k) outside your pension, a Roth IRA ($7,000 limit in 2026, $8,000 if 50+) is the natural supplement — especially valuable because Roth withdrawals don't affect the taxation of your pension income.

How to Calculate Your Pension's Present Value

A pension paying $2,500/month sounds great — but is it worth more or less than a 401(k) with a $600,000 balance? The answer requires converting your pension into a comparable dollar figure: its present value.

Present value is what a future stream of payments is worth today, discounted at an assumed rate of return. The basic logic: if your pension will pay $30,000/year for 25 years of expected retirement, and you could otherwise invest that money at 5% annually, the present value of that pension is the lump sum today that would produce the same cash flows.

The calculation gets more complex when you add COLA adjustments, spousal survivor benefits, and varying discount rates — but the concept is straightforward. A higher discount rate (aggressive investment assumption) lowers the pension's present value. A lower discount rate raises it.

Use the Pension Present Value Calculator to see exactly what your pension is worth in today's dollars. Enter your monthly payment, retirement age, expected lifespan, COLA rate, and discount rate — and you'll see both the total payout and cumulative present value by year. Most workers who run this calculation are surprised by the result: a modest monthly pension is often worth $400,000–$700,000 in present value terms.

Common Mistakes Workers Make

1. Undervaluing the Pension

Workers with pensions frequently leave jobs just before vesting (often 5 years) or take lump-sum buyouts without running the math. A pension that vests at year 5 is worth a specific, calculable number — if you leave at year 4, you forfeit that. Before making any job change, calculate the present value of the pension you'd be leaving, and compare it to what your new employer offers. The gap is often larger than people expect.

2. Not Contributing to the 401(k) Match

The employer match is a 50–100% instant return on your contribution. Skipping it to "keep more take-home pay" is leaving a guaranteed return on the table — one that no investment can match. Contributing at least enough to capture the full employer match is the highest-return financial move available to most workers, period. The match vests over time, so the longer you stay, the more it's worth.

3. Ignoring Inflation Risk in Pensions

Not all pensions include COLA adjustments. A $3,000/month pension in 2026 will have significantly less purchasing power in 2046 if it doesn't increase with inflation. At 3% annual inflation, that payment loses roughly 45% of its real value over 20 years — you'd need $5,418/month to buy the same basket of goods. If your pension has no COLA, that gap is your responsibility to fill with supplemental savings. Build this into your retirement math before you retire, not after.

Which Is Actually Better?

The honest answer: it depends on your priorities and situation. But here's a useful framework:

A pension is worth more if: you stay with the employer long enough to vest fully, you value income certainty over investment control, your pension has strong COLA protection, and you're in a high-cost-of-living area where guaranteed income is critical.

A 401(k) is worth more if: you change jobs frequently (portability matters), you have strong investment discipline, you want flexibility in how you withdraw, or you have a Roth option with significant tax-free growth ahead.

In practice, most workers with access to both should maximize both. The pension provides the floor; the 401(k) provides the upside and flexibility.

Frequently Asked Questions

Related: Pension Present Value Calculator | Retirement Planning Hub | Roth Conversion Ladder Strategy for Early Retirees