Why parlays aren't profitable in the long run

The appeal of parlays

Parlays (accumulators) attract bettors because they multiply odds. Three selections at 1.80 turn into combined odds of 5.83. The temptation of winning big from a small stake is real.

The problem is that multiplication doesn't only affect the odds. It also multiplies the bookmaker's margin. And that's where most people lose without realising.

How the margin compounds against you

Each individual selection already includes a bookmaker margin, typically between 3% and 8%. If you're not clear on how this works, it helps to first understand what odds are and how the bookmaker makes money.

With 5 selections, the accumulated margin exceeds 25%. You're giving away a quarter of your stake before kickoff.

The psychological trap

This pattern is very similar to impulsive bets: the decision isn't based on analysis, but on the emotion of the possible reward.

If you track your parlays separately and calculate how much you would have won with singles, the result is usually eye-opening.

What the numbers say

Even being good, the probability of failure on parlays is overwhelming. And every miss is a total loss of stake, not partial.

That's why the yield of bettors who abuse parlays is usually negative even when their individual selections are profitable.

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