File this schedule to report: the amount of interest expense allocable to effectively connected income (“ECI”) and the deductible amount of such allocation for the tax year under section 882(c) and Regulations section 1.882-5. Current Revision Schedule I (Form 1120-F) PDF Instructions for Schedule I (Form 1120-F) (Print Version) PDF Recent Developments None at this time. Other Items You May Find Useful All Schedule I (Form 1120-F) Revisions Other Current Products Related About Form 1120-F, U.S. Income Tax Return of a Foreign Corporation About Form 8833, Treaty-Based Return Position Disclosure Under Section 6114 or 7701(b)