SBA and Bank Financing: Interest Deductions and Entity Constraints

Bank and SBA loans provide deductible interest expense—reducing your taxable income year after year—but come with entity restrictions and personal guarantee requirements. Lender compliance must be coordinated with your CPA to ensure the entity structure is both tax-efficient and loan-eligible.

Interest is deductible under Section 163. Interest paid on acquisition debt used for business purposes is generally deductible. For an SBA 7(a) loan at 10% on a $1 million acquisition, that is roughly $100,000 in interest deductions in year one alone, declining as principal is repaid.

SBA requirements may constrain entity choice. SBA loans require a personal guarantee and often restrict the entity structure. Some SBA lenders require the acquiring entity to be organized in a specific way or impose limits on ownership transfers. Your CPA and attorney need to coordinate entity formation with lender requirements before closing.

The Section 163(j) limitation may apply. If business interest expense exceeds 30% of adjusted taxable income, the excess is disallowed in the current year and carried forward. This is more likely to affect highly leveraged acquisitions.

Personal guarantee has no immediate tax effect. Signing a personal guarantee does not change your tax basis in the business. Basis increases only as you make principal payments on the debt.

The pitfall: Selecting the entity structure to satisfy the lender without modeling the tax consequences. An entity that qualifies for SBA financing may not be the most tax-efficient structure for your situation.