Today we’re diving into a classic financial question that many doctors—especially early- or mid-career physicians—will face at some point: Should I choose a pension or a 401k/403b retirement plan?

This is a question I’ve personally faced and thought through extensively. I’ve even had to make this choice myself in my own career. In this post, I’ll walk you through the key differences between pensions and 401k-style plans, and I’ll share why I ultimately chose the latter—and why you might want to consider doing the same.

Defined benefit vs. defined contribution

Let’s start with a quick question…

A pension and a 401k differ from one another because a pension is a defined benefit plan while a 401(k) is a:

A. Defined insurance plan
B. Defined deduction plan
C. Defined investment plan
D. Defined contribution plan

If you answered D, you’re right.

That single distinction—defined benefit vs. defined contribution—is at the heart of the pension vs. 401(k) debate. So let’s break down what those terms actually mean.

What is a pension?

A pension is a defined benefit retirement plan. That means the benefit (i.e., the amount of money you receive each year in retirement) is set in advance. Usually, that amount is based on a formula involving your salary and years of service.

Here’s how it works in practice:

• You work for a hospital, university, or organization for 20, 25, 30 years.
• Upon retirement, you’re guaranteed a fixed income for the rest of your life.
• You don’t control how that money is invested—your employer does.

Pensions used to be standard. That’s just how retirement was handled. You worked at a company for most of your career, and in exchange, they promised to take care of you in retirement.

Sounds great, right? Well, kind of. Let’s take a closer look.

What Is a 401k or 403b?

A 401k or 403b in nonprofit and academic settings) is a defined contribution retirement plan. That means what’s defined is how much you can contribute each year—not how much you’ll eventually receive in retirement.

Here’s how a 401(k) works:

• You choose how much to contribute (within IRS limits—currently $23,500 for 2025 if you're under 50). An additional catch up contribution of $7,500 is allowed for those over 50. Additionally, a new catch-up contribution of $11,250 is available for those aged 60-63, if their plan allows.
• Your employer may match some or all of your contributions.
• You choose how the money is invested.
• The value of your account depends on how your investments perform.

Unlike a pension, a 401(k) puts the responsibility on you, the investor. But with that responsibility comes control—and opportunity.

Why I chose a 403b (similar to 401k) over a pension

In my own job, I had the option to choose between a pension or a 403(b). And I chose the 403(b)—quickly and confidently.

Why?

Because I wanted control over my investments.

When you invest in a 403(b), you’re not just relying on your employer’s plan or hoping they manage the pension fund well. You get to make intentional, strategic decisions with your money. And if you follow sound investing principles—passive, long-term, broadly diversified index fund investing—you can likely grow your nest egg more effectively than what a pension would offer.

The hidden downsides of a pension vs a 401k

While pensions sound appealing—guaranteed income for life!—they come with trade-offs:

1. Lack of portability

If you leave your job before becoming fully vested in the pension plan (often 5–10 years), you may lose some or all of your benefits. That’s a huge risk, especially for physicians who may change jobs early in their careers or pursue locum work or private practice.

2. Lack of control

You don’t get to choose how the pension fund is invested. It’s actively managed, often with high fees and underperformance relative to the broader market. That’s not ideal—especially when we know that passive investing outperforms active management about 80% of the time over the long term.

3. Potential for underfunding

Some pensions are not as secure as they appear. We've seen examples (particularly in state and municipal pensions) where poor planning or bad investing leads to underfunded pensions—and ultimately, reduced benefits.

The power of the 401k/403b for physicians

Now let’s talk about why defined contribution plans can be so powerful—especially for doctors.

1. Control over investment strategy

You decide how to invest. That means you can follow the same principles I talk about all the time:

• Passive investing in low-cost index funds
• Broad diversification across asset classes
• Annual rebalancing based on your risk tolerance
• Staying the course regardless of market ups and downs

By doing this, you reduce fees, minimize taxes, and let compounding do the heavy lifting.

2. Portability and flexibility

Your 401k or 403(b) goes with you if you change jobs; a pension doesn't. You can roll it over to another plan or an IRA. That’s a huge advantage for doctors who may move between institutions, private groups, or entrepreneurial ventures.

3. Higher potential returns

While not guaranteed like a pension, your defined contribution plan has greater growth potential—if managed wisely. A pension may offer stability, but a well-invested 401k offers freedom and potential wealth building.

What about employer matching?

Don’t forget: many employers offer matching contributions. This is free money.

For example, if your employer matches 50% of the first 6% you contribute, and you make $300,000 per year, that’s up to $9,000 per year in free retirement money. That adds up over time—and grows tax-deferred.

What if you’re risk averse?

It’s totally valid to want security in retirement. But here’s the good news: you can build that security on your own terms with a 401(k).

Want guaranteed income in retirement? You can create your own version of a pension by purchasing an annuity later in life, or using a portion of your retirement to generate stable income from dividends and bond ladders.

The point is, you have options.

Summary: My verdict on pensions vs. 401k

Here’s the bottom line:

Feature	Pension	401(k)/403(b)
Type	Defined Benefit	Defined Contribution
Control	Employer	You
Portability	Low	High
Risk	Low (if funded)	Market-based
Flexibility	Low	High
Investment Potential	Limited	High (with smart investing)

For me, the choice was clear: I opted for the 403(b). It puts me in the driver’s seat and allows me to apply all the proven principles I’ve shared on this blog and in the podcast.

As doctors, we already face enough unpredictability in our schedules and careers. Our finances don’t need to be another source of that unpredictability. With a solid strategy, we can turn our defined contribution plans into powerful engines for financial freedom.

And remember: you’re in control of your financial future. Choose the tools that empower you! Here are some more resources to help you on the journey:

• In Depth Review of My 403b Investment Account
• How Much Do You Need to Save for a $5 Million Nest Egg?
• Is Now a Bad Time for Doctors to Retire?
• Top 11 Ways That Doctors Should Invest Their Money

You can also check out my best-selling book, Money Matters in Medicine!

What do you think? Do you have a pension? A 401k? Both? What choice would you make if you had the option? Let me know in the comments below!