Can anyone recommend a software package that will enable me to calculate contributions, deductions, etc.... for proprietorships and partnerhships? I'm currently doing them by hand if small enough and using a spreadsheet for integrated profit sharing contributions. I know this is a longshot but nothing ventured, nothing gained.

What administration package do you use? Do you need it for cross-testing as well?

I think Gary Lesser can help you with this.

http://benefitslink.com/GSL/QPSEP_profile.html

Like a lot of people we use Relius for administration. We don't need it for cross testing but that would be nice.

Relius Proposal does a good job as long as you are not cross-testing. I have yet to find anything that does a decent calculation for plans that are cross-tested.