What Is a Self-Made Millionaire?

This page covers what the term means and how common self-made wealth is. It also covers the fair objection to the word, how long it usually takes, whether you need a high income, and what self-made millionaires did. Every figure comes from the studies on the research page, where each one is sourced and its weaknesses are named.

The definition

Merriam-Webster defines self-made as “having achieved success or prominence by one’s own efforts.” Cambridge adds what most definitions leave out: success that comes from your own work, not from money you were given.

Both halves matter. Nearly everyone works, so effort alone doesn’t define the word. What defines it is building wealth without a head start: no inheritance, no inherited business, and no money to fall back on if things went wrong.

Self-made doesn’t mean nobody helped. Everyone has teachers, bosses, customers, and a working economy behind them. The term describes where the money came from, not whether the person owed anyone anything. A contractor who started with nothing and built a business over thirty years is self-made, even though they had suppliers and a bank.

Self-made, first-generation, inherited: the terms

• Self-made millionaire. Built a net worth of $1 million or more through their own work, without a significant inheritance.
• First-generation millionaire. Someone who built the wealth rather than receiving it. Studies often use this interchangeably with self-made.
• Inherited wealth. Received a large share of their wealth from others, such as an estate, a trust, or a business.
• Windfall wealth. Came from a single event, like a lottery win or a legal settlement. Usually counted separately, because it can’t be repeated or learned from.

The distinction is practical, not moral. Wealth that was built came from a process someone else can learn. The full meaning of self-made, and the debate around the word →

What percentage of millionaires are self-made?

Most, in every major survey of millionaires. The exact share depends on who is counted and how self-made is defined.

• 79% of the 10,000 millionaires in Ramsey Solutions’ National Study of Millionaires received no inheritance at all.
• About 80% were first-generation affluent in Thomas Stanley and William Danko’s The Millionaire Next Door.
• 86% were self-made in Fidelity’s 2012 Millionaire Outlook survey, meaning they didn’t grow up wealthy.
• About two-thirds of the world’s billionaires are self-made, according to Forbes. The share is lower at the top because inherited wealth concentrates there.

The strongest part of the finding is that different researchers, using different methods, keep landing in the same range. The weakest part is that most of these are surveys of people describing themselves, and wealthy people may understate the help they had. A fair summary is two-thirds to four-fifths, depending on the study. Every study, with methods and caveats →

One study cuts the other way. Among Americans with $3 million or more to invest, Bank of America’s 2024 survey found only 25% self-made. Another 43% had a head start, such as a wealthy upbringing or some inheritance, and the rest had both. The higher the wealth, the more a head start shows up.

Is anyone really self-made?

The objection deserves a real answer, because it is partly right. Nobody succeeds alone. Everyone benefits from schools, roads, public safety, and the work of people who came before. Some “self-made” stories also leave out an early loan, a network they were born into, or a safety net that made risk affordable.

But the word makes a narrower claim. It asks whether the money was inherited or built. A first-generation business owner who started with nothing is self-made, even though they drove on public roads. Benefiting from society and inheriting a fortune are different things.

The critics are most right at the top, and when the label is stretched. When someone who grew up wealthy and connected calls themselves self-made, the word stops meaning much. That’s why Forbes rates billionaires on a scale of 1 to 10 instead of a simple yes or no.

Both things are true: nobody does it alone, and most millionaires in the surveys built their own wealth.

How long does it take?

Usually decades. In the surveys, most self-made millionaires got there through long stretches of steady work, saving, and investing. Young, fast fortunes exist, but they are the exception the headlines focus on.

That’s why the “overnight success” is usually an illusion. The visible moment sits on top of years of ordinary effort nobody saw.

Do you need a high income?

No, though income helps. In the Ramsey survey, only 31% averaged $100,000 a year over their careers, and a third never earned six figures in any single year. The most common careers were engineer, accountant, teacher, manager, and attorney.

Stanley and Danko found that income alone doesn’t predict wealth. They described “prodigious accumulators of wealth,” who hold far more than their income would suggest, and “under accumulators,” who hold far less. Many high earners spend their income on looking rich. A higher income makes wealth easier to build, but only if it isn’t spent.

What self-made millionaires did

Across the major studies, four habits keep appearing, in roughly this order.

• Build a paid skill. They built skills people paid for, usually in ordinary careers, and their earning power grew over time.
• Keep your lifestyle below your income. They spent well below what they earned, and they didn’t raise their spending every time their income rose.
• Invest automatically. They invested steadily for years. Eight in ten in the Ramsey survey invested through a workplace retirement plan.
• Own a stake. Many owned a business built on their skills. Stanley and Danko found business owners heavily represented among millionaires, and economists Smith, Yagan, Zidar, and Zwick found most top earners are “working rich” whose income comes from their own skills.

Time runs through all four. So does follow-through: doing these things on the weeks nobody is checking. How millionaires actually live day to day →

None of this is secret. The hard part isn’t knowing it. It’s doing it for years. How to become a self-made millionaire, habit by habit →

What the research can’t tell you

Every study here surveyed people who already succeeded. It shows what they did. It can’t show that the same habits guarantee the same result, because nobody surveyed the people who did the same things and didn’t get there. Luck, health, timing, and family background all matter. Research on entrepreneurs, for example, finds that business owners are more likely to come from higher-income families.

What the surveys do show is this: starting without an inheritance is the common path to wealth, not the rare one. A head start helps. It isn’t required.