Why Do Casinos Ban Card Counters?

September 24th, 2011 11:24 pm EST

The King is thinking about card counting in blackjackOk, in recent articles we've touched on the fact that casinos will ban card counters if they are detected.

The question you might now be asking is - WHY do casinos ban card counters?

Let's break this down from the top.

Casinos are in the business of making money.

Casinos have an edge in all games where the players can play against the "house". If they didn't have an edge, they would quickly go out of business.

Casinos have a small edge in blackjack. Casinos ride this small edge to millions upon millions of dollars in profits every year.

Against a competent card counter, casinos lose their edge. This is why card counting cards, such as the group from MIT, are able to sometimes win millions of dollars from casinos.

Casinos don't like losing. Casinos can ban whoever they want from their properties. You add these two things together, and card counters will be banned from casinos as soon as they are detected.

Card counting is NOT illegal. However, competent card counters have an edge against the house, so competent card counters are quickly dispatched from casinos.

In short, the reason why casinos don't allow card counters is because they cost the casinos money.