Complete Schedule B (Form 5713) if: You participated in or cooperated with an international boycott, and You figure the loss of tax benefits by specifically attributing taxes and income. Current Revision Schedule B (Form 5713) PDF Recent Developments None at this time. Other Items You May Find Useful All Schedule B (Form 5713) Revisions Other Current Products About Form 1120-IC-DISC, Interest Charge Domestic International Sales Corporation Return About Form 5713, International Boycott Report