Question on the difference between Liability and PnL on a losing Betfair SP lay bet

The sport of kings.
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quimbo
Posts: 3
Joined: Sat Jun 13, 2020 9:54 pm

Sorry for the dumb question - I feel like this should be a very simple concept but it's wrecking my head. Tried asking BF but the person I spoke to didn't know and I couldn't find what I'm after on the internet.

Basically in my betting history with betfair, I noticed that the PnL for losing lay SP bets is different to what it says the liability was on the bet

The info for the losing lay bet from my betfair statement:

Odds 6.96
Stake 1.67
Liability 9.95
Profit/Loss -10

£10 is what I set my liability to, and then obviously I get matched with £1.67 in back bets, which gives my liability of £9.95 - but why does my PnL still say £10? Where does the 5p go?

Either I'm being dense and missing something, or BF owes me a Malteser.
sentinel
Posts: 39
Joined: Tue Nov 13, 2012 10:15 pm

Because of rounding.
quimbo
Posts: 3
Joined: Sat Jun 13, 2020 9:54 pm

Sorry man I'm not sure I follow - why would the rounding be more than half a penny? If it was rounding would it not just be to the closest penny? Rather than 5p or more
spreadbetting
Posts: 3140
Joined: Sun Jan 31, 2010 8:06 pm

Betfair will take the whole liability of £10 as that's what you staked. The rounding comes in because the BSP may well have been 6.9649999 but they only show two decimals on the statement.

Even though that would give you a stake of 1.6764 Betfair would not round up the stake to £1.68 as they could end up losing a penny themselves had you won.
quimbo
Posts: 3
Joined: Sat Jun 13, 2020 9:54 pm

Ok dude thanks! Still seems a bit cheeky that I've effectively got a small fraction of my stake unmatched that I don't get back, but what can ya do - them's the breaks.

Thanks for the help
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