Most American billionaires have donated less than 5% of their net worth during their lifetimes. Morning Brew, citing Forbes, puts gifts by the 400 richest Americans at $319 billion by 2025, or 4.6% of wealth in its giving breakdown. Net worth means assets minus debts. For readers tracking celebrity fortunes, the lifetime share matters more than one big check.
Table of Contents
- How much do billionaires actually give?
- Why is 50% the benchmark?
- Why does the share stay low?
- Who beats the average?
How much do billionaires actually give?
Bridgespan Group found ultra-wealthy U.S. families with over $500 million donated 1.2–1.3% of assets in 2023. That pace trails the stock market's roughly 9% long-run annual return, as detailed in Inside Philanthropy's coverage of the Bridgespan analysis.
A low annual rate still moves huge dollars. It also lets invested wealth compound faster than gifts reduce it. Readers should compare multi-year shares, not single gifts.
Why is 50% the benchmark?
The Giving Pledge is a public promise to give at least half of wealth to charity in life or at death. Bill Gates, Melinda French Gates and Warren Buffett launched it in 2010, Encyclopaedia Britannica Money explains in its Giving Pledge explainer.
Britannica reports the voluntary effort grew from 57 founders to more than 250 signers in 30 countries by its 15th anniversary in 2025. That makes 50% the field's main should-give reference, not the observed average.
Why does the share stay low?
The Institute for Policy Studies found 32 original U.S. pledgers who stayed billionaires were about 166% wealthier after inflation since 2010. Gains like that shrink lifetime percentages even when dollar gifts grow.
The same Institute analysis found only 8 of 22 deceased U.S. pledgers gave at least 50% through lifetime gifts plus estates. Those 22 averaged 43% of wealth given.
Who beats the average?
Averages hide wide gaps. Morning Brew, citing Forbes, lists three donors far above the norm: Headline shares can also overstate charity received.
Forbes-style totals include moves to private foundations, which must pay out only 5% yearly, and to donor-advised funds with no yearly payout rule. To meet the 50% intent, pledgers must push money faster to operating charities.
- Warren Buffett: almost $65 billion given.
- George Soros: $32 billion, at least 75% of his fortune.
- Chuck Feeney: virtually all of his $8 billion before his 2023 death.