Retiring early is popular and for good reason. If you hit your financial targets early, why not step away from work and long commutes to spend more time with friends and family?

Nearly one in five U.S. adults say they want to retire before the age of 55, according to the data analytics company YouGov. (1) To retire comfortably, the majority of Americans think they need a $1.28-million nest egg, according to a survey by asset management firm Schroders (2).

If you’re a middle-aged multimillionaire with monthly spending needs of $10,000 and you have that “magic number” nest egg saved away in the bank, you might be tempted to retire as early as possible.

But the math is unforgiving.

Retiring at 55 instead of 62 or 65 dramatically increases the amount of money you need to finance your retirement because you’re too young to access two major safety nets — Social Security and Medicare.

Here’s a closer look at how much you need to save to retire early and why delaying could lower the barrier to entry.

Retiring in your mid-50s sounds ideal. You still have much of the health and energy needed to fully enjoy the leisure time you’ve earned, with decades of enjoyment ahead.

But early retirement comes with two major drawbacks: You don’t qualify for Medicare or Social Security benefits. That means you need to buy health insurance on the open market and cover the full cost yourself.

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In 2026, the average American will pay $625 a month for health insurance in 2026, according to the Kaiser Family Foundation (KFF) (3). A couple would pay $1,250.

That’s $15,000 a year just for health insurance.

Let’s say — aside from health needs — that your household expenses are $10,000 a month. You’ll need a big enough portfolio to generate $135,000 in annual passive income to cover those basic needs.

To retire comfortably, you’ll need a retirement portfolio of $3.4 million if you follow the 4% retirement withdrawal rule, meaning you’d draw down 4% of your nest egg in the first year of retirement and then adjust that for inflation for the next 30 years.

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