William Koch Net Worth
Source of wealth: Oil, investments
$1.95B
— today
Live · · Forbes real-time
William Koch's net worth is $1.95 billion as of November 7, 2026, according to Forbes' real-time data, which makes William Koch the 2112th richest person in the world.
Lost since you opened this page
$0.00⏱ 00:00:00 on this page$0.97 per second · based on net worth growth
Spend William Koch's money →How much does William Koch lose per second, hour and day?
Per second
$0.97
Per minute
$58.16
Per hour
$3,490
Per day
$83,754
Per week
$586,280
Per year
$30.59M
Basis: Forbes 2025 World's Billionaires list → Forbes Real-Time Billionaires. How we calculate this
How did William Koch get so rich?
William Koch, whose fortune comes from Oil, investments, has an estimated net worth of $1.95 billion. That ranks 2112th on Forbes' live list of the world's billionaires. Citizenship: United States (based in Palm Beach, Florida).
Since April 2025, when Forbes measured it at $2 billion, William Koch's fortune has shrunk by $49 million — an average of $0.97 per second, or $83,754 per day lost.
William Koch's net worth was $3 billion on Forbes' 2015 list, so it is down about 35% since then.
William Koch net worth history (2015–2026)
| Year | Net worth | Change |
|---|---|---|
| 2026 | $2B | $0 |
| 2025 | $2B | $0 |
| 2024 | $2B | +$400M |
| 2023 | $1.6B | $0 |
| 2022 | $1.6B | $0 |
| 2021 | $1.6B | +$100M |
| 2020 | $1.5B | −$300M |
| 2019 | $1.8B | +$100M |
| 2018 | $1.7B | +$400M |
| 2017 | $1.3B | −$600M |
| 2016 | $1.9B | −$1.1B |
| 2015 | $3B | — |
Ranked near William Koch
| # | Name | Net worth | Today | Per second | Country |
|---|---|---|---|---|---|
| 2109 | Geoffrey PalmerReal estate | $1.95B | — | −$0.94/s | United States |
| 2110 | Evan WilliamsTwitter | $1.95B | — | −$0.95/s | United States |
| 2111 | Premchand GodhaPharmaceuticals | $1.95B | −$6.74M(−0.3%) | $8.93/s | India |
| 2112 | William KochOil, investments | $1.95B | — | −$0.97/s | United States |
| 2113 | Christopher GoldsburySalsa | $1.95B | — | −$0.98/s | United States |
| 2114 | Bhadresh ShahEngineering | $1.95B | −$51.02M(−2.6%) | −$2.99/s | India |
| 2115 | Li LiangbinLithium | $1.95B | −$52.98M(−2.6%) | $4.92/s | China |
Compare William Koch with…
William Koch net worth: FAQs
What is William Koch's net worth?
William Koch's net worth is $1.95 billion as of November 7, 2026, according to Forbes' real-time data, which makes William Koch the 2112th richest person in the world.
How much does William Koch make per second?
William Koch is currently losing money on paper: Since April 2025, when Forbes measured it at $2 billion, William Koch's fortune has shrunk by $49 million — an average of $0.97 per second, or $83,754 per day lost. Wealth figures move with share prices, so the rate changes daily.
How did William Koch make their money?
The main sources of William Koch's wealth are: Oil, investments.
How long would it take an average person to earn William Koch's net worth?
A typical full-time US worker earning about $63,128 a year would need roughly 30,905 years to earn William Koch's fortune — without spending a cent.
How old is William Koch?
William Koch is 86 years old and is a citizen of United States.
Sources
- Net worth: Forbes Real-Time Billionaires (source), refreshed every 15 minutes.
- History: Forbes World's Billionaires lists, 2015–2026.
- Per-second figures are averages. See our methodology.