Lucky 15 Calculator

What a Lucky 15 actually costs

A Lucky 15 is four selections combined into fifteen separate bets: four singles, six doubles, four trebles and one four-fold accumulator. The number people get wrong is the stake. A “£1 Lucky 15” means £1 on each of the fifteen bets, so it costs £15. Each way, it costs £30.

Because it includes singles, one winner still returns something. That is the difference between a Lucky 15 and a Yankee, which is the same four selections without the singles — eleven bets instead of fifteen, and nothing back unless at least two of them win.

The two bonuses that make it “Lucky”

One winner, double the odds. If exactly one of your four selections wins, most bookmakers pay that single at double the odds. It softens the loss but rarely rescues it — see the example below.

All four winners, 10% bonus. If every selection wins, a percentage is added to your total return. 10% is the common figure, though some bookmakers pay more and some cap it. The calculator defaults to double odds and 10%, and you can change both.

Bonus terms vary more than anything else in this bet. They are usually paid on the win part only, they often do not apply if any selection is a non-runner, and a few bookmakers exclude certain meetings entirely. Check your own account’s rules before treating the bonus figure as certain.

Worked examples you can check

Four horses at decimal odds of 3.00, 4.00, 5.00 and 6.00, £1 per bet, so £15 staked.

• All four win: £839 back, or £922.90 with a 10% all-winners bonus.
• Two win (the 3.00 and the 5.00): £23 back. A £8 profit — half your selections lost and you are still ahead, which is the appeal.
• One wins (the 3.00): £3 becomes £6 at double the odds. You still lose £9 of your £15.

That last line is the honest one. The consolation bonus is generous-sounding and still leaves you 60% down. A Lucky 15 needs roughly half its selections to win before it breaks even at these prices.

Each way, non-runners and places

Switch each way on and every one of the fifteen bets is doubled: a win part and a place part, settled at the place fraction you choose. Mark a selection placed only and the win part returns nothing while the place part still pays. Mark one void and it settles at odds of 1.00, exactly as a bookmaker treats a non-runner — the single is refunded and every multiple containing it drops a leg, so your four-fold becomes a treble.

A Lucky 15 carries the bookmaker’s margin on all four selections, compounded across every combination. It is an entertainment bet, not a value one. 18+ only. Please gamble responsibly.