Hi, bwucpa - 

The base erosion tax payments are input on Form 1065, page 4, Schedule K, line 16r, code AE.  This amount can be specially allocated to the respective partners as needed on the Schedule K-1 worksheet.  However, I was able to override an amount on Schedule K-1, line 16 for this code but this is not recommended.   If the amount is not pro rata based on ownership, using special allocations is the best approach.

Hope this helps.....