John Collison vs Alexander Karp: who is richer?
John Collison is richer, with a net worth of $17.49 billion versus Alexander Karp's $17.43 billion — a gap of $64.4 million, or 1.00 times as much (as of November 7, 2026).
John Collison
Source of wealth: Payment software
$17.49B
Made since you opened this page: $0.00
Alexander Karp
Source of wealth: Software firm
$17.43B
Made since you opened this page: $0.00
Side-by-side
| John Collison | Alexander Karp | |
|---|---|---|
| Net worth | $17.49B | $17.43B |
| World rank | #161 | #163 |
| Makes per second | $146 | $179 |
| Makes per day | $12.63M | $15.43M |
| Today | $0 | +$521.8M |
| Source of wealth | Payment software | Software firm |
| Age | 36 | 59 |
| Country | Ireland | United States |
Net worth by year
| Year | John Collison | Alexander Karp |
|---|---|---|
| 2026 | $17.5B | $13.1B |
| 2025 | $10.1B | $8.4B |
| 2024 | $7.2B | $2.9B |
| 2023 | $5.5B | $1.3B |
| 2022 | $9.5B | $1.1B |
| 2021 | $3.2B | $2.1B |
| 2020 | $3.2B | $1.3B |
| 2019 | $2.1B | $1.3B |
| 2018 | $1B | $1.3B |
| 2017 | $1.1B | $1.6B |
| 2016 | — | $1.6B |
| 2015 | — | $1.2B |
Frequently asked questions
Who is richer, John Collison or Alexander Karp?
John Collison is richer, worth $17.49 billion compared with Alexander Karp's $17.43 billion. The difference is $64.4 million.
Who makes more per second, John Collison or Alexander Karp?
Alexander Karp makes more: about $179 per second versus $146. Per day that's $15.43M vs $12.63M.
How many times richer is John Collison than Alexander Karp?
John Collison has about 1.00 times Alexander Karp's net worth.