I could really use that too.  I've found some blurbs about payroll, but as a sole proprietor with no employees, I don't have any payroll and have never used that in my quickbooks desktop here.  I tried to list it as type "other current liability" and tax line "SEP deduction" but QB flags that as "income tax line that is not compatible with the account type) so I'm clearly doing this wrong.   If I list it as just an expense, then it reduces my company's earnings so much that the amount put into the SEP is now about the 20%is allowed.

There has to be a way to enter this without throwing the calculations off.