Finance and technology stand out in recent billionaire industry data, but that does not establish which industries produce the most millionaires worldwide. The sources reviewed for this article do not provide a comprehensive global 2026 census of millionaires by industry. Studies of people with million-dollar net worths also reveal a much wider range of careers than billionaire rankings suggest.
To answer the question responsibly, this guide separates three kinds of evidence: UBS estimates of personal net wealth, Capgemini research on high-net-worth individuals, and Forbes industry classifications of America’s richest people. It also examines an older U.S. millionaire survey. Together, these sources show where substantial fortunes appear and how people accumulate assets, without turning billionaire statistics into a ranking of ordinary millionaires or a prediction of individual success.

The Short Answer
Unfortunately, we can’t determine the highest number of millionaires in the world by career in various industries. The highest percentage of members of the 2026 Forbes 400 list are from the finance and investments industry, followed by technology.
It would be interesting to find out which professions have amassed the most wealth through business. Ramsey Solutions recently looked up the most common millionaire-makers in the U.S. and found they were teachers, engineers, and accountants.
How We Built This List
First we will distribute the primary research reports for these two lists, including a full explanation of our methodology for each. After that we will cross-reference the Forbes-established wealth categories for each of the industries listed, and we will not create a ‘millionaire industry’ by collecting and mishmashing together primary research on the salaries and jobs of billionaires from various reports.
What Counts as a Millionaire?
| Measure | Definition used here | Source and scope |
|---|---|---|
| Net-worth millionaire | An individual with at least US$1 million in assets after deducting debts. Property and financial assets can both contribute. | UBS Global Wealth Report 2026; personal wealth estimates. |
| High-net-worth individual (HNWI) | Capgemini’s measure requires at least US$1 million in investable assets, excluding the primary residence, collectibles, consumables and consumer durables. | Capgemini World Wealth Report 2026. |
| Billionaire | An individual with net worth of at least US$1 billion. The Forbes 400 is a much narrower selection of America’s richest people. | Forbes wealth rankings. |
Dollar millionaires worldwide at year-end 2025 numbered around 57.5m, the UBS survey reported. As for HNWIs worldwide at year-end 2025, their number was around 25.3m, as the Capgemini Global Wealth Report 2025 estimated.
Why Millionaire, HNWI and Billionaire Data Cannot Be Mixed
We must also note the value of the home(s) of very, very wealthy individuals not to be included in the ‘investable assets’ of ultra-high net worth individuals calculated by wealth managers. The billionaires listed by most sources are in fact of the ultra-wealthy variety, and their business interests can be quite distinct from those of someone who is only recently crossing the $1M US threshold to wealth.
Industry information for these articles comes from UBS/Capgemini research reports on high-net-worth individuals around the world as well as Forbes’ September 2026 list of the Forbes 400 richest individuals in America ranked by industry and estimated net worth. Ramsey survey information about the financial attitudes of money by industry to financial management of the money of those in professional careers to wealth will also be used.
Note that these sources do not count up to 100% of all millionaires worldwide. However, subsequent sections will explore in greater detail each of the eight industries in which the very wealthy in the world live and become millionaires and how they did it. These will be covered in separate articles below.
These sources only account for less than 100% of all millionaires in the world, and subsequent sections go into more detail regarding the specific means and/or barriers to entry of becoming a millionaire in each of the 8 industries listed above.
The above 8 sources for information on millionaires in the world were selected for these articles. Each of the 8 sectors above will be covered in more detail in the following sections, and how one can become a millionaire in each of these industries as well as possible barriers to entry.
Industries Most Associated With Wealth Creation in Current Data
All of these measures rely on a single industry signal: the number of members of the 2026 Forbes 400. Note that these measures all use the number of billionaires as a signal, as opposed to the total number of millionaires worldwide or the number of new fortunes created in 2026.
| Sector | How wealth can accumulate | Evidence type | 2026 Forbes 400 members | Main barrier |
|---|---|---|---|---|
| Finance & investments | Firm ownership, fees and investment equity | U.S. billionaire proxy | 108 | Capital, regulation and market risk |
| Technology | Founder shares, employee equity and intellectual property | U.S. billionaire proxy | 88 | Competition, funding and dilution |
| Manufacturing | Business equity, production capacity and reinvestment | U.S. billionaire proxy | 15 | Capital spending and operating costs |
| Fashion & retail | Brand ownership and distribution scale | U.S. billionaire proxy | 26 | Inventory, margins and customer acquisition |
| Food & beverage | Brands, processing, distribution and restaurant businesses | U.S. billionaire proxy | 35 | Margins, food safety and expansion costs |
| Energy | Ownership of resources, infrastructure and operating businesses | U.S. billionaire proxy | 23 | Capital intensity and policy exposure |
| Real estate | Property equity, rent and development profits | U.S. billionaire proxy | 18 | Financing, illiquidity and local market risk |
| Healthcare | Company or practice ownership and intellectual property | U.S. billionaire proxy | 15 | Regulation, clinical risk and funding |
Source: Forbes’ 2026 industry breakdown. These are selected categories, not the complete Forbes 400 distribution.
Finance & Investments
The evidence for U.S. billionaires in industry is shown below for finance, the largest industry of billionaires in the U.S. based on the number of members listed in the comparison to Forbes above. How many millionaires in finance worldwide are there?
Income generated by a business, such as an asset management company, can come from share ownership in the company, from ongoing management fees, and from the performance of the investment(s).
While lots of wealth has been generated by starting an investment business, being a part owner of an existing company or running a personal portfolio of investments, to name a few, huge barriers to entry and substantial risk exist for most individuals. A salaried bank employee is far removed from owning an asset management company.
The four biggest challenges for a financier building wealth are regulation, limited starting capital, client acquisition, and returns in down markets. Using borrowed capital to maximize returns also has the opposite effect: maximizing losses.
A note of caution: the Forbes list does not disclose the percentage of those millionaires in finance that are billionaires. We relied on Capgemini HNWI research to note that finance professionals are the largest group of millionaires by occupation—and that has not been our experience.

Technology
We have referenced prior data that listed the top US industries by billionaires and reviewed that against the Forbes data of the top industries of billionaires. Technology was a listed industry in both cases, but here we are not discussing the startup success rate of many employees of many technology startups and the rare occasion of extreme wealth for some of them.
An online retailer can be of great value to you as a very deployable franchise to grow your customer base exponentially at very low additional cost. You need to scale the intellectual property, the distribution, and the customer relationships of a retailer. Very deployable.
Many people have made huge sums of money in technology by virtue of equity, stock options, and venture capital investments. Such investments can be negotiated by the entrepreneur to best suit their own circumstances and those of early employees of a startup. These private employees’ shares can trade at a far higher price than the headline valuation for subsequent rounds of funding. Their shares are extremely illiquid.
Technology businesses tend to be very capital intensive in order to launch and successfully run a business in this space. There are many challenges in technology today, including high and complex cybersecurity, fluctuating customer bases, and high growth revenues, but little wealth for many individuals.
For the purpose of this report, online retail will be classified within the Fashion & Retail industry category as opposed to creating a separate category to analyze individual online e-commerce businesses.

Manufacturing
Statistics regarding the number of US billionaires by industry were compiled from Forbes information. The graph above depicts similar information for the manufacturing industry and shows that the manufacturing industry does not even rank third in the number of millionaires created.
A very successful product or contracting service that is used for long periods of time to efficiently distribute a manufacturer’s goods to retailers, and all of the product’s profits are reinvested in the manufacturer to increase manufacturing or efficiency, while the owner of the supplier company retains 100% of the equity of the supplier company as opposed to the owner of the supplier company paying out the lion’s share of the goods manufactured by the manufacturer to the production workers of the manufacturer as salary.
A producer could become very wealthy by forming a new entity to manufacture products and then selling those products through a supplier. A person also could purchase an existing manufacturer or even purchase a large percentage of an existing industrial company to become wealthy over time. A supplier with a unique process also could become very wealthy by selling that knowledge or delivery to customers over time.
Additional manufacturing barriers include (1) high fixed asset costs in a manufacturing plant, such as molds, machines, and presses; and (2) large amounts of cash are required to cover the working capital needs for finished goods, raw materials, and work in progress, as well as to deliver a quality product and pay for energy, materials, and labor to generate cash and asset value. (3) Few large customers who generate all of a supplier’s sales.
Please note that this type of static information should not be confused with dynamic numbers of millionaires in the industry or even the possibility of very small industrial businesses generating a personal net worth of over $1M.
Fashion & Retail / Consumer
We built this material connecting U.S. billionaire industry data to reveal the industries in which U.S. billionaires made their fortunes. Note that we used “Fashion & Retail / Consumer” for this graph as opposed to a graph with more technology-focused categories, even though many of the fashion & retail businesses are now online.
Wealth Mechanism: This chart maps customer demand for your products (to create sales), sourcing (to create repeat business), and distribution (to recreate sales and drive repeat business to your wealth) to recreate the sales of a brick-and-mortar retail store and create the wealth of the retail industry.
For the most part the list of wealthy shareholders consists of either inherited wealth or the appreciating equity of existing successful companies by shareholders who have not started a new company recently and are still employed full-time by the retailing company making tons of profits from sales of retail products.
In addition to the normal barriers of price discounting, returns, and customer acquisition, retailing typically requires a lot of cash to generate more sales before there can be any conversion to distributable profits from the resulting retail inventory commitments.
Of course, calculating the likelihood that anyone is going to become a billionaire in any of these industries is a dubious exercise (best left to the self-anointed gurus of the vocation). The number of online retailer billionaires will doubtless get lost in the millions and millions of retailing’s own millionaires in these fields.
Food & Beverage
The same industry information is provided for data on U.S. billionaires as for Forbes information for the same year. Here we present data on wealth creation in the food & beverage industry, along with finance, software, and property.
As mentioned above, Forbes listed billionaires who made their wealth in the food & beverage industry, including food processing and distribution, as well as large restaurants and franchise chains. Many well-known brands of bottled mineral water, snacks, and other foodstuffs are also represented in the list of Forbes’ billionaires.
A single product can generate enormous wealth for its producer/distributor when sold in shops. Huge sums can also be generated by a restaurant or large chain of franchise stores.
Many of the aforementioned problems a retailer faces when increasing the purchasing power of consumers will affect the cash flow of a shop manager. For the retail of the above-mentioned foods, the following problems will occur: safety risk, natural life cycle, personnel, business premises, and high input costs. In the case of most of these products, the margin of a single item for a retailer is very low. The owner of a retail unit with volume, however, will see his margin of a single item greatly increase.
The report highlights the wealth created by many of the food & beverage billionaires on the Forbes 400 list. Note that the data in this report is for 2026 and does not attempt to capture the wealth of hundreds of first-time food millionaires who own hundreds of cafes worldwide.
Energy
These data points have been re-categorized in this analysis of the energy industry of U.S. billionaires.
The info illustrates how energy wealth is generated in the form of cash-generating assets, including natural resources, energy-related infrastructure, and high-value energy-related assets held within companies. Once a project is identified for development, it requires financing and permits to build and subsequently a lot of risk to develop and operate the project until it becomes cash generating. The economics of a project can change dramatically whilst under development due to movement in commodity prices and by way of change in government policy and legislation.
The same analysis can be applied to a broader energy investment strategy. This could include investing in energy projects and owning them jointly or singly, or buying shares in quoted energy companies with a renewable energy focus, especially those that have concentrated on energy storage.
The proceeds from these will generally exceed the value of the long-life assets in individual projects. The funding and permitting of a project can take a long time to achieve, but once completed, the project may need to be refinanced. The future cash flows from a project are uncertain.
While it may seem like the individuals on the list made it big in the energy industry, it is worth noting that there are many successful industries, and gaining wealth in the energy industry is not necessarily easier than in other areas of business. Also, even if they have reached millionaire status within the last decade, that does not necessarily mean they would consider themselves successful.
Real Estate
This information was provided to us regarding billionaire wealth creators in the U.S. real estate industry (excluding the category of ‘property’). We compared their wealth to that of billionaires created elsewhere and living there as part of their total wealth.
In particular, the property equity of property owners is defined as their equity in the property minus all liabilities towards the property, plus rental income from the property, plus repayment of interest and principal on any debt, plus any capital increase through property development or even just through ownership of a residential property.
Most of the aforementioned individuals in this list are involved in real estate through rental properties, property development, property stocks, and property management. They own homes, which increase in value in the property.
Many of the “barriers to entry” for successful real estate investing have fallen. The returns on many investments in property are miserable. Investment in property is an extremely difficult activity and, in particular, high risk when it comes to property development. The major risk with property development is that all of the money that was used to develop a property may never be repaid.
The purpose of this paper was not to establish how many of the world’s millionaires are involved in real estate nor to predict how in the US, Europe, and South Africa property will appreciate.
Healthcare
In other words, the above table does not attempt to compare and contrast the categories of doctors, practice owners, and biotech founders and investors in IP and stock. Below is a table of U.S. billionaires by industry as reported by Forbes for several industries.
In addition to making money from your work in the healthcare space, you can also save and invest that money and watch it build in equity in your work. We’ve spoken of the doctor who owns his/her own practice and the equity he/she can build in that practice. That also is true of the shares of pre-revenue companies in the pharmaceutical and biotech industries held by their shareholders and founders — i.e., IP and stock of companies with good clinical and commercial outcomes hoped for in the future.
Wealth is created by the work that you do in the healthcare space and can then be saved and invested. Thus, in addition to earning money from your work with patients of a certain medical specialty, the owner of a medical practice can also be building up equity in his/her or their practice. In addition to earning money from the IP of a pre-revenue company in the pharmaceutical and biotech space, the founder and/or the stockholder can be holding shares of said pre-revenue companies with good clinical and commercial results hoped for in the future.
Recently another researcher tried to explain why certain groups of employees are not able to acquire sufficient wealth. According to his observations, one of the biggest problems might be the high cost of health care education and the sometimes very high costs for obtaining licenses in order to practice a certain health care career. Moreover, another problem might be the complex health care reimbursement systems as well as many health care laws and strict health care regulations.
There is no research to support the claim that there are millions of wealthy doctors, practice owners, and biotech founders. No research exists to support the claim that it takes 10 years of research to reach a million-dollar net worth.
What Studies of Everyday Millionaires Show
Ramsey Solutions conducted original research to examine the professions of over 10,000 millionaires living in the United States today as well as the behavior of currently wealthy individuals through a Ramsey Solutions survey. This research was conducted through a third-party online panel as well as the Ramsey Solutions research panel.
The Most Common Millionaire Careers Are Not the Same as the Top Billionaire Industries
Our research into the ‘Everyday Millionaires’ discovered that 70% of them are accountants, lawyers, teachers, engineers, and managers, in that order. Interestingly, the majority of this group of Everyday Millionaires were big users of their employer’s 401(k) plan when they were in their current career. In fact, 36% of Everyday Millionaires earned more than $100,000 from their current career.
Note: In the lists below, a variety of professional services are reported within the many different careers reported by the Everyday Millionaires. For example, accountants are reported in many different industries, including healthcare and manufacturing, professional services firms, etc.
Please note that the survey also contained many other professional services that were reported as the respondents’ current careers, i.e., accounting (e.g., health care, manufacturing in professional services), for example. We acknowledge the same limitations found with billionaire lists: old data, collected in the U.S., poor sample methodology, and all survey data self-reported.
What Matters More Than Industry: Ownership, Equity and Long-Term Investing
The term "assets" in an economic sense is, apart from cash, saved money and investments and even consists of company shares, partnership interests, real estate, and other assets held by you as an employee of a company in which you hold employee equity.
On the other hand, assets to increase your net worth include savings & investment (cash & securities) and also other assets such as stocks (shares) of companies, partnership interests, real estate (property) equity, etc. held by you as an employee of a company where you hold some employee equity. But note that the value of such equity you hold may be less than face value and subject to vesting and massive dilution as well.
While concentrated ownership can work well for owners of very high-growth businesses, it typically ties an owner’s personal wealth to one business's performance. Of course, long-term investors can spread their dollars across a much broader range of investments. None of the sources above referenced a specific percentage of millionaires who became that way through either route.
A business or investment can also increase your net worth, but that doesn't necessarily mean you have more cash. There are also taxes, debts, and selling costs to consider.
Does Your Industry Determine Your Chances of Becoming a Millionaire?
Industries affect business models, required capital, and equity ownership opportunities. However, no industry will, in isolation, determine a host of other factors and an individual's outcome. Relevant factors include skills, initial capital, liabilities, expenditure, investment decisions, and the time span over which those decisions are made.
All datasets on wealthy people have only looked at those who have already made it, so they offer no insight into which sector might be easiest for others to build wealth in. To calculate success rates for different industries for a given comparison population, you need to look at the same number of people in each industry over a similar time period.
So, the fact that many wealthy founders come from a certain industry does not in any way predict the chances of success of new entrants to that industry. Conversely, not working in these industries does not mean you can’t become a millionaire in net worth.
Conclusion
So there is some evidence, though none is strong enough to establish a worldwide industry ranking of millionaires. The evidence for U.S. billionaires in finance and technology is somewhat stronger than for millionaires in various careers.
All industries examined can lead to asset accumulation through ownership of a company's retained earnings. Other ways to become a millionaire in a salaried position include building wealth through long-term investing. Industry does not guarantee wealth, and no one can guarantee how quickly you reach a $1M mark.
Q Wealth can assist with cross-border structuring of your business and assets and advise on banking and asset protection options on a global basis, taking an informed view of your particular circumstances and the relevant obligations.
