See Rakeback on Hold’em Manager Reports
One of the handier tricks with Hold’em Manager that I like to utilize is custom statistics. Using these you can add various values to your reports, one of which is rakeback.
For example:

Adding this to your reports is relatively simple. First, locate the file customstats.txt – It can be found in your Hold’em Manager reports folder (typically C:\Program Files\RVG Software\Holdem Manager\Reports). If the file doesn’t exist then create it in this location.
Once you have the file open you want to add the following information to it:
<stat GroupName="Default" ColumnName="FTP Rakeback" ValueExpressions="Sum(PH.RakeAmount)/100.0*0.27 as FTPRakeBackAmount" Evaluate="FTPRakeBackAmount" ColumnHeader="FTPRakeback" ColumnFormat="$0.00" ColumnWidth="*" Tooltip="FTP Rakeback based on 27%" />
After you’ve done this open Hold’em Manager again and locate the “Add Statistic to report button” (see below)

After you’ve done that in the window that appears take a look at the “Custom Stats” section, you should see something similar to the following:

Highlight the “FTPRakeback” statistic and click Save. After you’ve done this refresh your report and you’ll see your rakeback figure listed (at a rate of 27%) at the end of it. Enjoy!
Someone said that HEM’s Rakeback calculations aren’t accurate. Have you compared rakeback received and what HEM reports?
Not very closely, no. Will take a look into this at the end of the month though.