Interest paid or accrued by a business is generally deductible for federal tax purposes. But limitations apply. Now some changes under the One Big Beautiful Bill Act (OBBBA) will result in larger deductions for affected taxpayers. Limitation basics The deduction for business interest expense for a particular tax year is generally limited to 30% of the taxpayer’s adjusted taxable income (ATI). That taxpayer could be you or your business entity, such as a partnership, limited liability company (LLC), or C or S corporation. Any business interest expense that’s disallowed by this limitation is carried forward to future tax years. Business interest expense means interest on debt that’s allocable to a business. For partnerships, LLCs that are treated as partnerships for tax purposes, and S corporations, the limitation on the business interest...