What returns are realistic? When a profit promise is a scam

Updated on October 29, 2026

The quickest way to spot an investment scam needs no finance knowledge: look at how much it promises. Fraudulent platforms talk about 1% a day, 20% a month or “doubling your money in weeks”. A calculator shows why that is impossible.

What is realistic

  • Stock markets over the long term: developed-market equities have historically returned, on average, roughly 5% to 10% a year over the long run, with years of heavy losses along the way.
  • Savings accounts and deposits: usually a few percent a year, depending on current interest rates.
  • Bonds: moderate returns that depend on interest rates and the issuer’s risk.

Most importantly: no legitimate investment guarantees profits. The higher the possible return, the higher the risk of loss.

What scams promise, in numbers

Compound interest turns scam promises into absurd figures:

PromiseWhat it would mean over one year
1% a dayMultiplying your money by more than 37
20% a monthMultiplying it by almost 9
10% a monthMultiplying it by more than 3
“Double it in a month”Multiplying it by more than 4,000

If a system really did that, its creators would be among the richest people in the world within a few years. They would not need Facebook ads with celebrities or your 250.

Phrases that give a scam away

  • “Guaranteed profits” or “no risk”.
  • “The robot / AI trades for you, you don’t have to do anything”.
  • “The banks don’t want you to know about this system”.
  • “Limited places, sign up today”.
  • “Start with just 250”.
  • “Withdraw any time” (and then you have to pay to withdraw).

What if my balance really is growing?

On fraudulent platforms, the balance you see is a number on a screen, not money. The scammers control what the app displays. That is why they let you withdraw small amounts at first: so you trust them and deposit more. The real test comes when you try to withdraw a significant amount, and that is when “taxes” and “fees” appear.

How to invest without falling for scams

  • Only invest through authorised firms: how to check if a broker is regulated.
  • Distrust any opportunity that reaches you through ads, social media, WhatsApp or someone you have just met.
  • If you do not understand how the profit is made, do not invest.
  • Before deciding, talk to someone you trust or an authorised adviser.

Been offered a platform with returns like these? Search it on InvestRedFlags.

Weekly summary of the fraudulent investment platforms we detect in social media ads. Read this week’s report →

Already signed up or paid?

  1. Do not pay anything else, even if they ask for "taxes" or "fees" to release your money.
  2. Call your bank today: block your card and request a chargeback or a transfer recall. The sooner, the better your chances.
  3. Do not install anything they ask for (AnyDesk, TeamViewer…). If you did, uninstall it and change your passwords.
  4. Report it to the police and your country’s regulator, and keep screenshots, emails and phone numbers.
  5. Beware of "fund recovery" companies that will contact you promising to get your money back for a fee: they are almost always a second scam.

Guides on investment scams