We often get asked by punters what is a Rule 4 deduction (R4), and how to calculate it for a specific horse racing market that has had non runners in it. Non runners are not always a negative towards your bet if it is a hot favourite or a danger that you have highliughted that is pulled for whatever reason, but there is also nothing more frustarting than an outsider reducing your winnings. Some different bookmakers have different rules on the larger priced non runners, and will often waivey any deduction above 10/1 sometimes but in general the official deduction table is as follows:
| Rule 4 Deductions | ||||||||||
| 3/10 or shorter | = | 75p in the £ | ||||||||
| 2/5 to 1/3 | = | 70p in the £ | ||||||||
| 8/15 to 4/9 | = | 65p in the £ | ||||||||
| 4/5 to 4/6 | = | 55p in the £ | ||||||||
| 20/21 to 5/6 | = | 50p in the £ | ||||||||
| Evens to 6/5 | = | 45p in the £ | ||||||||
| 5/4 to 6/4 | = | 40p in the £ | ||||||||
| 13/8 to 7/4 | = | 35p in the £ | ||||||||
| 15/8 to 9/4 | = | 30p in the £ | ||||||||
| 5/2 to 3/1 | = | 25p in the £ | ||||||||
| 10/3 to 4/1 | = | 20p in the £ | ||||||||
| 9/2 to 11/2 | = | 15p in the £ | ||||||||
| 6/1 to 9/1 | = | 10p in the £ | ||||||||
| 10/1 to 14/1 | = | 5p in the £ | ||||||||
| Over 14/1 | = | No Deductions | ||||||||
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To calculate the new retuerns of your selection after a NR just follow this simple method. THis can be used for horse racing or any sport where a rule 4 is applicable:
Original returns x (1 – (Rule 4 / 100))
Example:
You backed a horse at 5/1 (£10 stake) and within that race there was a 4/1 non runner, which would be 20p rule 4.
50 x (1-(20/100))
= 50 x 0.8
= 40
It really is that simple! If you have more than one rule then add up all the rule 4's and use the total in the equation above.
