Most physicians have a number somewhere in their head. A retirement target. A portfolio balance they’ve been told they need to reach before they can think about slowing down or stepping back.

The problem isn’t the number itself. The problem is how we’ve been taught to think about it.

We treat it like a finish line. Something to grind toward. And because it lives out there in the abstract, somewhere between a mutual fund balance and a vague sense of “enough,” it’s almost impossible to tell whether you’re close.

What I want to offer here is a different approach. Instead of asking “how much do I need?” start asking “how much do I need per month?” Then work backwards from there. That single shift changes everything about how you plan, invest, and evaluate your time.

This is the framework. It’s practical. It’s specific. And for most physicians who actually run through it, the result is surprising.

Disclaimer: This article is for informational and educational purposes only and does not constitute financial, legal, or investment advice. Any investment involves risk, and you should consult your financial advisor, attorney, or CPA before making any investment decisions. Past performance is not indicative of future results. The author and associated entities disclaim any liability for loss incurred as a result of the use of this material or its content.

Why the Nest Egg Model Fails Physicians

The traditional retirement framework goes something like this: accumulate a large enough portfolio, apply a safe withdrawal rate (the commonly cited figure is 4%), and live on the distributions. If you need $20,000 a month, you need a $6 million portfolio. Hit the number, retire.

The math works on paper. The problem is that the target is abstract in a way that makes it almost impossible to manage month to month. A $6 million portfolio is hard to feel. It grows and shrinks with market conditions. And for most physicians, the goalpost tends to move, because life gets more expensive, or the number never felt quite certain to begin with.

The result is a lot of high-income physicians doing exactly what I’ve seen in practice: grinding well past the point where they needed to, trading time and energy for money they would never spend, because they never actually defined what “there” meant.

Start With the Monthly Number

Here’s the reframe. Instead of targeting a portfolio balance, target a monthly passive income figure. This is the number that your investments, your real estate, your business income, whatever combination makes sense for you, need to generate each month with no clinical income required.

To find your number, you need to actually run the math. Here’s the simplest way to do it.

Pull your bank and credit card statements from the last 12 months. Open a spreadsheet. Go through every transaction and sort them into two buckets.

The first bucket is your essential expenses: housing, food, utilities, insurance, car payments, kids’ school or childcare, healthcare, and any debt payments. Total those for the year and divide by 12. That’s your financial security number. The passive income that would keep your life running with no paycheck coming in.

The second calculation is simpler. Total everything you spent over 12 months and divide by 12. That’s your financial freedom number. The figure that covers both the non-negotiables and the life you actually want, the travel, the dinners, the experiences.

Most physicians who do this exercise for the first time are surprised by the result. The number is lower than expected. In my experience, for most physicians it lands somewhere between $20,000 and $40,000 per month, and people routinely assume it would be higher.

There’s another detail worth noting: the number tends to go down over time, not up. Kids finish college. Mortgages get paid off. The overhead of your 40s rarely reflects what your life actually costs at 60. Most physicians are planning for a number that reflects today’s expenses, not tomorrow’s reality.

Reverse-Engineering the Path

Once you have a monthly target, you can build a real plan. Not a vague intention, an actual sequence of milestones.

Let’s use $20,000 per month as the example. That’s your destination. Now you work backwards.

To reach $20,000 per month in 20 years, you need a linear progression that looks something like this: $10,000 per month by year 10, $5,000 per month by year 5, and $1,000 per month by year one, which is $12,000 a year in passive income.

That first-year number is the one that matters most, because it’s the one you can actually do something about right now. One solid real estate investment can get a physician a meaningful portion of the way there. It’s not a lifetime project. It’s a starting point.

You hit that milestone. Then you build the next layer. Then the next.

One thing I’ve consistently observed: most physicians don’t progress linearly once they get started. Knowledge compounds. The second investment is faster than the first because you understand the process. Your network grows. Your instincts improve. By year three or four, most people are ahead of where the linear projection said they’d be.

And if you want to move faster, you don’t need a new strategy. You just adjust the timeline. Plug in 10 years instead of 20, and work backwards to see what year one needs to look like.

Mapping the Asset Mix

The milestones tell you where you need to be. The asset map tells you how to get there.

Real estate cash flow, dividends, private lending, business income, syndication distributions. Each of these has a different timeline, a different capital requirement, different liquidity, and different tax treatment. The question isn’t which one is theoretically best. The question is which combination closes your specific gap, in the right sequence, given what you have available right now in terms of capital and time.

This is where most physicians get stuck. They understand the assets. They just don’t know what to do first.

Your monthly number gives you something to aim at. The milestones give you checkpoints. The asset map gives you a sequence. That’s a plan, not just an aspiration.

A few general principles worth knowing as you think about the mix: real estate tends to offer strong cash flow with favorable tax treatment but requires more upfront capital and diligence. Syndications are more passive but less liquid. Dividends are highly liquid but typically generate lower yields. Private lending can be attractive in certain rate environments but carries its own risk profile. Most physicians end up with some combination rather than one vehicle, and the right mix shifts as your capital base grows.

The Insight That Reframes All of This

In the book Die with Zero, Bill Perkins makes an observation that sounds simple but lands harder the longer you think about it: most high-income professionals die at or near the peak of their net worth.

Think about what that actually means. The money worked for in your 40s. The weekends traded. The extra shifts picked up. If that capital is never deployed into something that generates freedom and options, it represents time and energy exchanged for nothing. Anything left on the table at the end is an earlier version of yourself who worked for something that was never used.

This isn’t an argument for reckless spending. It’s an argument for building income streams that work now, not just for a version of yourself at 70. The earlier you start thinking in monthly income rather than portfolio balances, the more of your actual life you get to live with that freedom already in place.

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Where to Start

If you’ve never actually run this exercise, that’s the place to start. Not with an investment strategy. Not with a product comparison. With the number.

Pull the statements. Open the spreadsheet. Find your financial security number and your financial freedom number. Then work backwards to what year one needs to look like.

Most physicians who do this find that the gap is smaller than they expected. Some find they’re closer than they thought. A few realize, like the anesthesiologist I had lunch with a few years ago, that they’re already there and just didn’t know it because they had never asked the question this way.

Your freedom number isn’t a finish line. It’s a blueprint. The framework exists. The math is straightforward. The only thing left is to run it.

If you want a tool that walks you through the calculation step by step, we built a financial freedom calculator at passiveincomemd.com/financialcalculator. Put in your numbers and it does the reverse-engineering for you.

Were these helpful in any way? Make sure to sign up for the newsletter and join the Passive Income Docs Facebook Group for more physician-tailored content.

Peter Kim, MD is the founder of Passive Income MD, the creator of Passive Real Estate Academy, and offers weekly education through his Monday podcast, the Passive Income MD Podcast. Join our community at the Passive Income Doc Facebook Group.

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