A living individual whose estimated net worth equals or exceeds $1 billion USD, as reported by Forbes. Net worth figures are estimates based on known assets, shareholdings, and business valuations — they are not audited.

How we use it: Every figure on this site draws on this definition. We use the Forbes list as-is, without adjustment or supplementation.

An expenditure, asset acquisition, subsidy, or other financial event directly attributable to a named billionaire or billionaire-linked entity, where the cost figure is verifiable from public records, corporate filings, or credible reporting.

How we use it: The qualifying category for waste events on The Price Is Wrong.

A billionaire event where the expenditure or cost is directly traceable to a named individual's personal spending or decision. Examples: yacht purchase, private jet acquisition, personal property transaction.

A billionaire event where the cost is attributable to an entity the billionaire controls or substantially benefits from, rather than personal spending. Examples: corporate tax concessions, subsidies to billionaire-owned companies.

A Trump administration spending decision or policy cost where the expenditure is verifiable and the decision-making chain is documented. Included on the wheel where cost figures meet the site's source standards.

A billionaire-funded political intervention with a measurable public cost — for example, funding a ballot initiative that reshaped public spending, or financing a political campaign with documented downstream policy effects.

A human-cost translation of a waste event figure. Answers the question: what could this money have funded instead? Value equivalents are drawn from the five categories — Health, Education, Housing, Environment, Food — using published institutional cost estimates.

Value equivalents are illustrative comparisons, not precise allocations. They show scale, not a specific funding proposal. See Sources & Methods: CLM-012 for cost basis.

A number retrieved directly from a named source and published without transformation. The value on this site is identical to the value in the source data.

Registry label: SOURCED

A figure calculated from one or more raw sources. Arithmetic operations (sums, ratios, percentages) applied to raw data. The method is documented in Sources & Methods.

Registry label: DERIVED

A figure extended beyond the available data using stated assumptions. Includes live ticking counters and estimates extrapolated from known rates.

Registry label: PROJECTED

A figure that updates automatically from a live data source. The value shown reflects the most recent retrieval, not a fixed point-in-time snapshot.

Registry label: LIVE

A figure where the source does not provide a precise value and a reasonable approximation has been used. The basis for the estimate is documented in Sources & Methods.

Registry label: ESTIMATED

A scale analogy or translation — not a measurement. Used to make large figures viscerally legible. The Do The Math simulator produces illustrative comparisons: they show what the money could theoretically fund at published unit costs, not what would happen under any specific policy.

Registry label: ILLUSTRATIVE

The date on which a figure was pulled from its source. Used for live data that updates automatically.

The date on which a figure was last manually confirmed against its source. Used for static figures that do not update automatically.

Used on the dashboard to indicate the most recent successful automated data retrieval. Distinct from verified — updated is automated, verified is editorial.

As used on this site: the estimated total value of an individual's assets minus liabilities, as reported by Forbes. Not an audited figure. Subject to market fluctuation. Forbes updates rankings in real time; this site retrieves and publishes a daily snapshot.

A tax rule that resets the value of an inherited asset to its market price at the time of inheritance, erasing any capital gains that accumulated during the original owner’s lifetime.

If a billionaire buys shares worth $1 million and they grow to $100 million, the $99 million gain would normally be taxable when sold. If those shares are passed to an heir instead, the “basis” resets to $100 million — and the $99 million in gains is never taxed. The heir can sell immediately and owe nothing on that growth.

Why it matters here: Stepped-up basis is one of the primary mechanisms by which dynastic wealth passes between generations without triggering the tax liability that would apply to ordinary income. It effectively makes death a tax-free transaction for large estates.

The profit made when an asset — shares, property, a business — is sold for more than it cost to buy. Capital gains are only taxable when the asset is sold, not while it is held.

In most countries, capital gains are taxed at a lower rate than wages. In the United States, long-term capital gains (assets held over a year) are taxed at a maximum of 20%, compared to a top income tax rate of 37% on wages. Billionaires whose wealth comes primarily from appreciating assets pay tax at the lower rate; workers whose income comes from wages pay at the higher rate.

Why it matters here: The gap between the capital gains rate and the income tax rate is one reason billionaires often pay a lower effective tax rate than middle-income earners, despite holding vastly more wealth.

The increase in value of an asset that has not yet been sold. If shares bought for $1 million are now worth $50 million, the $49 million difference is an unrealised gain — it represents real wealth, but because no sale has occurred, it is not taxable under current law in most jurisdictions.

Most billionaire wealth exists as unrealised gains. A billionaire whose net worth is $80 billion has not received $80 billion in income — they hold assets estimated to be worth that amount. They pay tax only when they sell.

Why it matters here: Unrealised gains are why net worth figures and tax bills can appear completely disconnected. Forbes estimates total wealth; tax systems only count what is sold. The gap between those two numbers is where most billionaire wealth lives.

An informal name for the wealth preservation strategy that allows billionaires to access their wealth without selling assets — and therefore without triggering capital gains tax.

The mechanics: buy appreciating assets (shares, property, art). Borrow against them using low-interest loans, using the assets as collateral. Live on the borrowed money, which is not income and therefore not taxable. Die, passing the assets to heirs with a stepped-up basis that erases the accumulated gains. Repeat across generations.

Why it matters here: Buy, borrow, die is why some of the wealthiest people in the world can report very low taxable income in a given year despite holding tens of billions in assets. It is legal, widely used, and structurally unavailable to people who do not hold significant appreciating assets.

The actual percentage of income or wealth paid in tax, after all deductions, exemptions, and preferential rates are applied. Distinct from the headline or “marginal” tax rate, which is the rate that applies to the top bracket of income.

A wage earner in the top US income bracket faces a marginal rate of 37%. A billionaire whose wealth grows primarily through unrealised asset appreciation may report relatively little taxable income and pay an effective rate far below that — sometimes in the single digits as a percentage of total wealth increase.

Why it matters here: Comparing effective tax rates across income levels reveals the structural asymmetry between how wages and wealth are taxed. ProPublica’s 2021 analysis of leaked IRS data found that some of the wealthiest Americans paid effective rates of 1–3% on wealth growth over multi-year periods.

A country or jurisdiction that offers very low or zero tax rates, strong financial secrecy laws, or both — making it attractive for individuals and corporations to register assets, companies, or residency there to minimise tax obligations elsewhere.

Common examples include the Cayman Islands, British Virgin Islands, Luxembourg, Switzerland, and Ireland. Assets held through structures in these jurisdictions can be legally shielded from the tax systems of the countries where their owners actually live and do business.

Why it matters here: Tax havens allow wealth to be formally located somewhere other than where it was generated, reducing or eliminating tax in the country that provided the infrastructure, workforce, and legal system that made the wealth possible.

A legal arrangement, investment, or financial structure that reduces taxable income or liability. Unlike tax havens, which involve moving wealth to a different jurisdiction, tax shelters typically operate within a single country’s tax law — using deductions, depreciation, losses, or preferential treatments to lower the tax bill.

Examples include depreciation allowances on real estate (allowing paper losses to offset real income), oil and gas depletion deductions, and the use of charitable foundations to receive a tax deduction while retaining influence over how the money is deployed.

Why it matters here: Tax shelters are legal by design — they are features of the tax code, not workarounds. They disproportionately benefit those with enough wealth and complexity to access them, and their aggregate effect is to reduce the effective tax rate on large fortunes below what the headline rates would suggest.

A share of the profits earned by fund managers — typically in private equity, venture capital, and hedge funds — that is taxed as capital gains rather than ordinary income, despite being payment for services rendered.

A fund manager who takes 20% of a fund’s profits as their fee would, under normal income tax treatment, pay the income tax rate on that amount. Under carried interest rules, they pay the lower capital gains rate instead — typically half the top income tax rate or less — even though the money was earned as compensation for work, not from risking their own capital.

Why it matters here: Carried interest is one of the most discussed and durable preferential tax treatments in the US tax code. It primarily benefits a small number of extremely high-earning finance professionals and has survived repeated legislative attempts to close it, in part due to significant political donations from the industry.