Why is it called a Ponzi scheme?

It is named after Charles Ponzi, who ran a famous scheme in Boston in 1919 and 1920.

What is the difference between a Ponzi scheme and a pyramid scheme?

In a Ponzi scheme, an operator pays older investors with money from newer investors. In a pyramid scheme, people are paid mainly for recruiting others. Both collapse when the new money or new people run out.

Is every high-return investment a Ponzi scheme?

No. But high returns with little or no risk is the classic warning sign. Higher returns normally mean higher risk.

Can a Ponzi scheme involve crypto?

Any kind of investment can be misused, including crypto assets. The same warning signs and the same questions apply.

What should I do if I think I found one?

Stop sending money, keep your records, and report it to your local financial regulator. In the US, that is the SEC.

What is a Ponzi scheme? How it works and the warning signs

A Ponzi scheme pays older investors with money from newer investors. It does not pay them from real profit. It can look fine for a while. Then the new money slows down.

How a Ponzi scheme works

Someone offers you a high return, often with little or no risk. The first people to join are paid on time. That builds trust, and more people join.

But the money does not come from a real business. It comes from the next people who join. The organizer may also keep part of it.

A real business works differently. Customers pay for a product or a service. That is its revenue. What is left after costs is profit.

No real product behind the payouts.

Payouts come from real sales.

Simplified illustration.

Where the name comes from

The name comes from Charles Ponzi. In 1919 and 1920 he told people in Boston they would get a 50% profit in 45 days, or 100% in 90 days.

He said the profit came from buying cheap international postal reply coupons abroad and cashing them in at face value in the US. That plan did not work in practice. He paid older investors with money from newer ones.

In July 1920 the Boston Post began to question the scheme. Reporting showed that far more coupons would be needed than actually existed. People panicked and asked for their money. By August it had collapsed. Thousands of people lost money, about 20 million dollars at the time by common estimates.

Ponzi was not the first person to run a scheme like this. But his story was so well known that his name stuck.

Black-and-white photograph of Charles Ponzi seated at a desk, writing, in a suit and tie. — Charles Ponzi in 1920. Photo: public domain, via Wikimedia Commons. Source

Why it falls apart

Every payout needs fresh money. So the scheme has to keep growing. Each round needs more new people than the one before.

That cannot go on forever. When it gets hard to find new people, or when many people ask for their money at once, the money runs out. Then the scheme collapses.

Illustration only, not real data.

A modern example: the Madoff case

Bernard Madoff was a well-known New York financier. He was arrested in December 2008. His clients' statements showed steady gains of around 10% a year. But the money was not invested as claimed. Withdrawals were paid from other clients' money.

The 2008 financial crisis made many clients ask for their money back, and there was not enough. Madoff pleaded guilty in March 2009. In June 2009 a judge sentenced him to 150 years in prison.

Prosecutors estimated that his statements showed about 65 billion dollars in client balances. Much of that was invented gains, but real people lost real savings.

Ponzi scheme or pyramid scheme?

The two are close cousins, and people often mix them up. The difference is how the money moves.

Ponzi scheme: an operator says they will invest your money. Older investors are paid with money from newer investors.
Pyramid scheme: you are paid mainly for bringing in other people, who also pay to join. There is little or no real product.
Both need a constant flow of new money or new people. Both collapse when that flow slows. Pyramid schemes are illegal in many countries, including the US.

If everyone recruits 6 people, level 12 needs about 2.2 billion people and level 13 about 13 billion. That is more than all the people on Earth.

Warning signs to watch for

The US Securities and Exchange Commission (SEC) lists common warning signs. None of them proves fraud on its own. Together, they are a reason to stop and ask questions.

High returns, little or no riskEvery investment has some risk. Be very careful with anything “guaranteed”.
Returns that are too steadyReal investments go up and down. Steady gains in every market are suspicious.
Secret or complex strategyIf you cannot understand it or get full information, do not invest.
Not registered, or unlicensed sellersPonzi schemes often involve unregistered offers and sellers without a licence.
Trouble getting paidDelays or excuses when you try to cash out are a warning sign.
Pressure to act now“Everyone is buying it” and “last chance” pitches push you to skip your homework.

How to protect yourself

This page is general education. It is not financial or legal advice.

Ask one question: where does the money come from? If the answer is vague, walk away.
If you do not understand how it works, do not put money in.
Be careful with anyone who guarantees a return.
Check that the offer and the seller are registered or licensed where you live.
Take your time. A good offer will still be there tomorrow.
Only use money you can afford to lose.

What is a Ponzi scheme?