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Rule 4

Last Updated: Nov 08, 2019 11:23AM CET

The Tattersalls' Rule 4 protects players and bookmakers in fixed-odds markets from the risk of late withdrawals. Summarised it means that any bets placed on horses which are subsequently withdrawn shall be refunded and in return all payouts for winning bets laid in any market where such non-runners were still priced up shall be subject to a deduction.

We clearly state in a fixed-odds market when the Rule 4 applies. In the head of the market and in the fixed-odds betting dialog it is stated "Rule 4 applies" if it's bets are subject to the Tattersalls' Rule 4. It never applies to ante-post markets but once the final declaration stage for a race is reached, which happens usually some days before the actual race day, its markets are not ante-post anymore and all bets placed in such markets will therefore be settled in accordance with these rules.


A deduction only applies to winning bets which were laid in a market where one or multiple non-runners were still priced up. Therefore, the following rates of deduction are only applied for those non-runners which were not declared as such in the market the bet was laid in:

Price of non-runner
at time of withdrawal
Percentage deducted
from net winnings
1/9 or longer odds on
1.11 or longer odds on
2/11 to 2/17
1.18 to 1.12
1/4 to 1/5
1.25 to 1.20
3/10 to 2/7
1.30 to 1.28
2/5 to 1/3
1.40 to 1.33
8/15 to 4/9
1.53 to 1.44
8/13 to 4/7
1.61 to 1.57
4/5 to 4/6
1.80 to 1.67
20/21 to 5/6
1.95 to 1.83
1/1 to 6/5
2.00 to 2.05
5/4 to 6/4
2.25 to 2.5
13/8 to 7/4
2.62 to 2.75
15/8 to 9/4
2.88 to 3.25
5/2 to 3/1
3.50 to 4.00
10/3 to 4/1
4.33 to 5.00
9/2 to 11/2
5.50 to 6.50
6/1 to 9/1
7.00 to 10.00
10/1 to 14/1
11.00 to 15.00
Over 14/1
Over 15.00
No deduction


Should in one race more than one horse be declared as a non-runner, the according deductions are added up, but the total deduction shall not exceed 90%. Should the total deduction be 5% it will be waived.

Should a horse be withdrawn and a new market formed, then any bets laid in the original market will be subject to the above deductions. In the event of a further withdrawal after the market has been re-formed, bets placed in the original market will be subject to a further deduction based on the last price of the withdrawn horse in the original market. Bets placed in the new market will be subject to a deduction based on the current price.

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