What is a treble bet?
A treble is an accumulator of three selections. All three must win for the bet to pay out. If one loses, the entire stake is lost. A €10 treble on three football teams at 2.00, 1.80 and 2.50 gives combined odds of 2.00 × 1.80 × 2.50 = 9.00, returning €90.00 for a €10 stake if all three win. The treble is the smallest-size accumulator commonly offered by bookmakers and many punters use it as an everyday weekend football bet.
Calculating treble returns and the margin
Treble odds multiply exactly as the formula above suggests. The bookmaker’s margin also multiplies: if each leg carries a 5% margin, the treble carries roughly 14-15% combined margin (1 minus 0.95^3). For comparison, a single on the same leg carries a 5% margin. The treble is more than twice as expensive per unit of risk. This is not a reason never to place a treble, but it is a reason to be realistic about why they lose most of the time.
When a treble is a reasonable bet
A treble makes most sense when you have strong opinions on three events happening, all three feel like they should happen, and you want a larger return than a single on any one of them would provide. It is less defensible as a systematic strategy — backing three 2/1 shots in a treble looks exciting but the combined fair probability is about 30%, while the market odds imply roughly 24% (after margins), creating a persistent edge against you.
Treble vs three singles
Suppose you have €30 to bet. As a €10 treble, all three must win for a return. As three €10 singles, any winner returns something. The maths show that three singles at equal total stake will almost always have lower variance and lower expected loss than the equivalent treble. The treble offers a larger single return but at the cost of a narrower set of outcomes producing any return at all. 18+ — Gambling Awareness Trust: 1800 753 753.
Frequently Asked Questions
Multiply the decimal odds of all three selections together (e.g. 2.00 × 1.75 × 2.50 = 8.75), then multiply by your stake. A €10 treble at combined odds of 8.75 returns €87.50 if all three win.
The entire treble bet loses. All three selections must win for a treble to pay out. There is no partial return for getting two of three correct, unlike a system bet such as a Trixie (which also covers doubles alongside the treble).
A Trixie consists of four bets on three selections: three doubles plus one treble. If two of your three selections win, the Trixie pays out on the winning doubles even if the treble loses. A Trixie costs four times your unit stake. A straight treble costs one unit but requires all three to win.
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