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Introduction

SECTION 7. BUSINESS INTEREST

Internal Revenue Bulletin 2018-16 · 2026-10-03 edition · updated 2026-10-04 · United States

INCOME AND FLOOR PLAN FINANCING OF PARTNERSHIPS, PARTNERS, S CORPORATIONS, AND S CORPORATION SHAREHOLDERS

Section 163(j)(4) requires that the annual limitation on the deduction for business interest expense be applied at the partnership level and that any deduction for business interest be taken into account in determining the non-separately stated taxable income or loss of the partnership. Although section 163(j)(4) is applied at the partnership level with respect to the partnership’s indebtedness, section 163(j) may also be applied at the partner level in certain circumstances. The Treasury Department and the IRS intend to issue regulations providing that, for purposes of calculating a partner’s annual deduction for business interest under section 163(j)(1), a partner cannot include the partner’s share of the partnership’s business interest income for the

taxable year except to the extent of the partner’s share of the excess of (i) the partnership’s business interest income over (ii) the partnership’s business interest expense (not including floor plan financing). Additionally, the Treasury Department and the IRS intend to issue regulations providing that a partner cannot include such partner’s share of the partnership’s floor plan financing interest in determining the partner’s annual business interest expense deduction limitation under section 163(j). Such regulations are intended to prevent the double counting of business interest income and floor plan financing interest for purposes of the deduction afforded by section 163(j) and are consistent with general principles of Chapter 1 of the Code. Similar rules will apply to any S corporation and its shareholders.

For further information regarding this issue, contact Meghan Howard at (202) 317-5279, Adrienne Mikolashek at (202) 317-6850, or Anthony McQuillen at (202) 317-6850 (not a toll-free number).

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