Billionaires pay single-digit federal income tax against wealth growth because most net worth sits in company equity, not paychecks. Liquid cash covers only part of the fortune, while tax applies mainly when gains are sold. Unrealized gains mean higher stock value before a sale. White House economists count those gains as income to show lower effective rates.
Table of Contents
- How low are billionaire tax rates on wealth growth?
- Why does equity wealth grow untaxed?
- How much billionaire wealth is actually liquid?
- What would a tax on unrealized gains change?
- Why can't you compare these rates to salary rates?
How low are billionaire tax rates on wealth growth?
White House OMB-CEA economists counted unrealized gains as income for the wealthiest 400 families. They estimated an 8.2% federal individual income-tax rate from 2010–2018, according to the OMB-CEA report. ProPublica tracked the 25 richest Americans from 2014–2018. They gained $401 billion and paid $13.6 billion, a 3.4% true tax rate, according to the ProPublica investigation.
True tax rate means tax divided by wealth increase, not by reported taxable income. Jeff Bezos added about $99 billion in wealth from 2014–2018 while reporting $4.22 billion of income and paying $973 million in tax. Warren Buffett added $24.3 billion while paying $23.7 million, about 0.1%. ProPublica reported both cases from tax-record data.
Why does equity wealth grow untaxed?
Companies can retain profits rather than pay taxable dividends, NBER researchers note. That leaves shareholder wealth higher while taxable income stays lower. The gain lives on the balance sheet, not the tax return.
Kiplinger, reporting the IRS rule, explains owners can borrow against appreciated stock for cash without selling. At death, heirs receive a stepped-up basis to market value. Lifetime appreciation can then escape income tax if never sold.
How much billionaire wealth is actually liquid?
Wealth-X put 2017 billionaire holdings at mostly business equity, according to the Wealth-X Billionaire Census. The split was: That mix leaves less than one-quarter in cash for spending, loans, or tax bills. Paying tax on paper gains would require selling shares or borrowing more.
- 41.5% public stock
- 33.3% private business
- 22.9% liquid cash
- 2.3% real estate and luxury assets
What would a tax on unrealized gains change?
The Biden administration proposed a 20%-25% minimum tax on total income including unrealized gains. It would cover households worth over $100 million, about 0.01% of households, under the White House FY2024 budget and Treasury FY2025 Greenbook.
The plan would credit minimum tax paid against later tax on realized gains. A billionaire taxed on paper growth would owe less when shares are later sold.
Why can't you compare these rates to salary rates?
The 3.4% and 8.2% figures divide tax by wealth growth, not taxable income. They cannot be directly compared with statutory wage-tax rates, FactCheck.org notes, according to its analysis of unrealized-gains proposals.
That is why proposals target unrealized gains rather than raising salary rates. A broader NBER measure counts all taxes against economic income. It estimated about 24% for the top 400 by wealth in 2018–2020, versus 30% for the full population and 45% for top labor earners.