Teaser Calculator

Work out the returns on a teaser, where every leg's line is moved in your favour at a reduced combined price.

A teaser calculator shows how much a multiple bet costs when you shift every line in your favour, and reveals the reduced price you pay for moving those lines in decimal format and euros.

What Is a Teaser?

A teaser is a multiple bet in which every leg’s line is shifted in your favour by an agreed amount, and the price of the whole bet is cut to pay for it. All legs must still win, exactly as in an ordinary multiple — you are buying a friendlier line on each of them rather than any cover if one fails. The appeal is straightforward: instead of accepting a slightly worse line for a better price, you get the better line you want, but the sportsbook reduces the combined odds to compensate. You are not getting the better line free; you are paying for it through lower odds across the whole bet.

A teaser works only on bets where the line can move: spreads, totals, and similar propositions where the number can shift. If you are backing a 1X2 result, there is no line to move, so a teaser does not apply. But where a line exists, a teaser lets you move the line by an agreed amount on each leg in your favour. The catch is the reduced odds. Move both legs and the price on each leg falls sharply. Multiply two reduced prices together and the combined odds fall even more steeply. That compounding is the cost bettors need to understand: it is not the same as buying a single teased line, because every leg is teased, and all the reduced prices multiply together.

How a Teaser Is Calculated

To find the cost of a teaser, first apply the line move to each leg and take the reduced decimal price you are offered for that moved line. Then multiply all those reduced prices together to get your combined odds. Finally, multiply by your stake to find the return. Every leg must still win — there is no cover, no mercy, no partial return if one selection fails. The line move is where the bookie gives you an edge; the reduced odds are where they take it back.

The compounding effect matters more with teasers than with ordinary multiples. In a regular multiple, you are multiplying the same original prices together. In a teaser, you are multiplying lower prices — because each has been reduced to pay for the line move — so the combined result is much lower. Take a two-leg bet at 1.90 on each leg. The combined odds without any teasing would be 1.90 × 1.90 = 3.61. Now tease each leg and take the reduced price of 1.55 on each. The combined odds fall to 1.55 × 1.55 = 2.40. That is not a small haircut — it is a substantial reduction in combined odds compared to the unteased price. Add a third leg and the gap widens again, because you are multiplying another reduced price into the calculation.

The formula is simple — multiply the teased prices together — but the outcome demonstrates why bettors often underestimate the cost. Line moves feel like a bonus, and in isolation they are. But when a teaser reduces the price on every leg and you are multiplying all those reduced prices together, the cumulative effect is steep.

What the Calculator Shows You

The calculator takes the unteased price for each leg and the amount you want to move the line, and lets you enter the teased price the sportsbook offers. It then computes the combined odds for both versions — the unteased bet and the teased bet — and multiplies each by your stake to show the return. This side-by-side comparison is crucial, because it forces you to weigh whether the moved line is worth the price cut.

The calculator also shows the difference in return between the two versions: in the example below, a €40 stake returns €144.40 unteased but only €96.10 teased, a difference of €48.30. That gap is the true cost of moving the lines. Many bettors focus on the nicer numbers — the moved line, the reduced price — and miss the total amount of money they are giving up. Seeing the two returns side by side makes that trade-off impossible to ignore.

Worked Example

Consider a two-leg teaser at a €40 stake, with each line moved by half a goal in your favour. The first leg is Monza with an unteased spread of 1.90; moving it half a goal in your favour brings the new price to 1.55. The second leg is Lecce, also starting at 1.90 unteased, also moving to 1.55 after teasing by half a goal.

Without teasing, the combined odds would be 1.90 × 1.90 = 3.61, and the €40 stake would return €144.40. With both legs teased, the combined odds drop to 1.55 × 1.55 = 2.40, and the same €40 stake returns only €96.10, a profit of €56.10. The cost of teasing both lines is €144.40 − €96.10 = €48.30. That is a significant haircut, yet the moved lines still offer something the unteased prices do not: a better chance of winning, because the threshold is easier to clear. The trade-off is real: better odds of landing the bet, worse odds on the payout.

What Moving Both Lines Costs on a EUR 40 Two-Leg Bet

Teasing every leg shifts the line in your favour, but the sportsbook recoups that move by cutting the price. The table below shows how a two-leg bet changes when both legs are teased by half a goal.

Where the Cost Comes From

The price reduction is built into every teased leg, and those reductions accumulate when the legs multiply. Here is how a simple two-leg example breaks down.

Each individual leg sees a substantial price reduction when teased. But when you multiply the two reduced prices of 1.55 together, the combined odds fall from 3.61 to 2.40. That gap between 3.61 and 2.40 is the cost of the line moves, and it is larger than the sum of the individual price cuts, because the reductions multiply together.

The Compounding Cost of Teasing

The cost of teasing compounds, because the reduction applies to every leg and the legs multiply together. Two legs at 1.90 combine to 3.61; teased to 1.55 each they combine to only 2.40, so the EUR 40 stake returns EUR 96.10 instead of EUR 144.40 — EUR 48.30 less. Add a third leg and the gap widens again. A teaser also gives no cover at all: every leg must still win, so it buys friendlier lines, not safety. This is an important distinction. In some bets, like a system or a half-point played as a multiple, you get some insurance if a leg fails. In a teaser, the moved lines are the only advantage you receive; if any leg loses, the whole wager loses just like a regular multiple.

The compounding effect means that teasers are most valuable when you are moving lines that matter. If a line was never close to a key number, you are paying for a move that may not change the outcome at all. If the final score is almost certain to land on one side of the original line, the teaser bought you nothing. The line move only has value if the original line was close enough to the key number that the move actually changes your win probability.

When a Teaser Makes Sense

Teasers work best when the original line is genuinely close to a key outcome. If you are worried that the spread might land exactly at the line, moving it is genuinely valuable. The reduced price is a fair trade-off for that peace of mind. But if the line was never at risk — if it was safely favourable to you already — then you are paying for a move that does not change your chances of winning. The calculation should always start with whether the original line offers value; if it does, the teaser is an expensive luxury. If the original line is borderline, the teaser might tip it into your favour.

Bankroll management is also crucial. Because every leg must still win, teasers are not safer than regular multiples; they just come with a better line. Do not treat a teaser as protection or insurance. Treat it as a way to adjust the line if you believe that adjustment is worth the cost in reduced odds. Stake small, keep the number of legs modest, and compare the teased return against what you would get from the unteased version or a single-bet alternative. If the teaser only makes sense because the reduced odds happen to be attractive, it is not a good teaser to place.

Common Mistakes

The most common error is thinking a teaser protects you if a leg loses — it does not; every leg must win, just as in any other multiple. Many bettors also underestimate the cost, which compounds across the legs rather than adding up. Others tease lines that were never close to the key numbers, paying for a move that offers no real advantage. Finally, bettors often compare a teased return with an unteased one without ensuring they are using the same stake, leading to a false sense of the trade-off.

Teaser Against the Alternatives

A teaser is one option among several when you want to adjust a bet. The difference lies in how many lines you adjust and whether you get any cover if a leg loses.