Schedule K-1

Detailed Explanation

A Schedule K-1 is the document that translates the entity-level pass-through return into items reported on the recipient's personal return. There are three primary versions, each tied to a different entity-level form: Schedule K-1 (Form 1065) for partnerships and multi-member LLCs taxed as partnerships, Schedule K-1 (Form 1120-S) for S corporations, and Schedule K-1 (Form 1041) for estates and trusts. The K-1 reports the recipient's pro-rata share of ordinary business income, separately stated items (interest, dividends, capital gains, Section 1231 gains/losses, Section 179 expense, charitable contributions), foreign tax paid, AMT preferences, basis adjustments, and credits. Each box on the K-1 corresponds to a specific line on the recipient's Form 1040 or one of its schedules: Box 1 ordinary business income flows to Schedule E Part II; capital gains flow to Schedule D and Form 8949; interest and dividends flow to Schedule B; Section 179 flows to Form 4562. The recipient is taxed on their share of income whether or not cash was actually distributed (a major point of confusion for new K-1 holders). For S-Corp shareholders, Form 7203 must be attached to track stock and debt basis when claiming losses, taking distributions, or disposing of stock. K-1s are due to recipients by the entity's return deadline (March 15 for partnerships and S-Corps, April 15 for trusts/estates), but late issuance is common, often forcing recipients to extend their personal returns. Final K-1s on entity termination report the wind-up allocation and may include a "negative outside basis" reduction or capital gain.