Monday, March 8, 2010

Bankroll discrepancies - I'm "missing" a few bucks

Is there an accountant in the house? I am having a difficult time sorting this out but I believe that Hold'em Manager's rakeback feature might be inaccurate, inaccurate to the tune of about ten bucks or so. Currently HEM projects that my total bankroll is $177.82. However, when I try to calculate my bankroll differently I come up with a vastly different number. The FTP cashier says that I have $166.49 currently and my rakeback.com's report says that I have $20.01 of rakeback that I have accrued so far since last Tuesday but has not been credited to my account yet. That was for all action up until midnight eastern last night. Since then I've only played 355 hands to the tune of a 4 cent profit, negligible. So in other words, if I don't play a single hand until after my rakeback gets added my total bankroll would be $166.49 plus $20.01 rakeback plus .04 for last night's hands. That equals $186.54, not the $177.82 that HEM claims. I will do more investigation but I am going to go with the hard numbers and not HEM's calculations for my official number. Likewise, that is how all bankroll numbers will be calculated for the April 1 milestone.

How does this happen? I've long wondered about how HEM figures rakeback and I'm pretty sure there are a couple things going on. First of all, 27% rakeback does not make for round numbers. My suspicion is that HEM might only hold whole penny values while FTP is calculating to the fractional penny. Over tens of thousands of hands (currently at 67K+) the accumulation of errors will add up to significant money. The other thing that I believe contributes to the difference is split pots. I don't know if it is dividing the rake and the rakeback properly between the players who split the pot or only by the person listed first. It is also possible that returned bets are being calculated in rake and rakeback. If I pot it for .20 and the person calling only has .05, the FTP HH says that .15 is returned while the HEM version of that same hand says that I "won" the .15 returned to me.

Furthermore, after completely rebuilding the HEM database with HH files directly from FTP (not the ones off of the local drive) I can take the raw total from HEM ($66.28) and add in all rakeback ($96.58) plus the four pennies from last night and get $162.90 which is still off from the $166.49 currently shown in my cashier window but by a more reasonable $3.59. That figure is close to what I get paid out to me each day for rakeback and is 20 cents off from the last day of rakeback that was added to my roll. Regardless of what is causing the issue, the numbers are not working out properly and I'm going to look into it more. Until then I've given myself a bonus in of $8.72 in HEM to bring the two numbers closer in line with each other until I can figure out a better solution. If you are using HEM to calculate your bankroll you might want to double check its figures. Again, only official numbers such as cashier amount and rakeback reports will count for the April 1 milestone.

My new adjusted bankroll tally is $186.54.


1 comment:

  1. Well, I think you have surpassed me in one category, ability to grind, or hands played per week.

    I do not have hold'em manager but I can roughly calculate how many hands I can play in a week.

    On a good week for me with little outside interference, I can probably play 30 hours per week of online poker. Primarily 2 tabling with some 3 and 4 tabling, say I can play 2.5 tables per hour. I sit at 6 max tables and sometimes these are short handed or heads up. 80 hands per hour per table seems about right.

    30*2.5*80= 6,000 hands per week.

    Other weeks I may play as little as 15 or 20 hours so my hands per week will be even less.

    If you are at over 60,000 hands, I am not sure how long you have been grinding but my guess is 8 weeks or less. Sounds like you are doing about 8,000 hands per week.

    So is it more hours or more tables?

    Congratulations on being number one in the unofficial category of top cake challenge grinder.

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