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Stake (Parameters)

 
There is a range of staking options available from a basic fixed amount through to percentages of your current net stake, see below for full details of each one.
 
 
Fixed Amount - This is the regular way of staking – the stake you enter will be used when placing the bet regardless of the price.
By Liability (Back & Lay Only) - The stake you have entered now becomes the liability you are willing to accept on lay bets or amount you want to win on back bets. So, if your lay bet rule uses a £20 stake and is placed at odds of 3.5, Bet Angel will calculate the amount needed to realise a £20 liability; at odds of 3.5 this would mean a lay bet of £8.00 is submitted to the market. This means if that selection loses you make a profit of £8.00 and if it wins you lose £20.
If your back bet rule uses a £20 and is placed at odds of 6.0, Bet Angel will calculate the amount needed to realise a £20 profit; at odds of 6.0 this would mean a back bet of £4.00 is submitted to the market. 
By Book% - When betting on multiple selections staking by book% is calculated as follows.
Using £100 stakes backing three runners By Book%.
Runner A @ 2.0 will be staked with £50 for a £50 payout on win.
Runner B @ 5.0 will be staked with £20 for a £80 payout on win.
Runner C @ 10.0 will be staked with £10 for a £90 payout on win.
However if A wins, you'll lose the stake of B & C.  So £50 - £20 - £10 = £20
If B wins, you'll lose the stake of A & C.  So £80 - £50 - £10 = £20
If C wins, you'll lose the stake of A & B.  So £90 - £50 - £20 = £20
So level profit if A,B or C win.
But £50+£20+£10 loss if any other wins.
Book% of the three runners represents 80% of the total book, which is why the total stake is 80% of the £100 staked.
A Percentage of Balance - This of course means your stake will be calculated from your current Betfair balance, therefore if you had £500 in your account and entered 10% a stake of £50 would then be used.  
By Liability as A Percentage of Balance - This calculates  therefore if you had £500 in your account and entered 10% a stake of £50 would then be used as your liability, meaning if you.  
By Servant Context
This option uses the current preset stake chosen for the selection under your mouse cursor (on the ladder or one-click screen) at the time the servant is started, or if your starting the servant via the 'Control' tab of the 'Servant Manager' you will be able to manually enter the stake required before pressing 'Start'
Percentage of Servant Context
This option lets you use a percentage of a stake, so if you had £200 selected from the preset staking area on either your ladder or One-Click screens or were to enter £200 on the 'Control' tab of the 'Servant Manager' and set 25% as this option then a stake of £50 would be placed.
Net Stake - Uses your current Net Stake, this is the size of an open position on a selection. i.e. the amount of back bets matched on a selection minus the amount of lay bets matched on a selection. So if you had £200 of back bets matched and £120 of lay bets matched then your Net Stake would be £80
Percentage of Net Stake
This uses the same staking as above except it only uses a percentage of your Net Stake, so if your Net Stake happened to be £140 and you were using this method with 10% then a stake amount of £14 would be submitted.
Stored Value Stake
This option lets you set your stake using an amount held in a Stored Value, if used you will have additional options to choose the name of the stored value you want to use and if the stored value is from a selection, market or event.
By Liability using Stored Value Stake
This uses the same calculation as staking ‘By Liability’ but the stake used for the calculation is provided by a Stored Value rather than defined in the rule itself.