Pass-Through Entities and Qualified Business Income

Business ownership creates pass-through tax complexity including K-1 coordination, Section 199A deduction limitations, and basis tracking that requires specialized CPA expertise.

Pass-through entities pass the complexity to you. S-corps, partnerships, and most LLCs do not pay federal income tax themselves. Instead, income, deductions, credits, and losses flow through to your personal return via Schedule K-1. This sounds simple but isn't: K-1s regularly arrive late, contain dozens of line items, and can require basis tracking that spans the life of your ownership.

The qualified business income deduction can cut your rate. Section 199A allows eligible pass-through owners to deduct up to 20% of qualified business income, but the rules are layered with income thresholds, specified service trade limitations, and W-2 wage tests. Whether you qualify -- and for how much -- depends on your total taxable income, the type of business, and how much the business pays in wages.

Valuation matters more than you think. Business interests are harder to value than publicly traded stocks. You may need a formal valuation for buy-sell agreements, estate planning, or partner buyouts, and the IRS can challenge valuations it considers unreasonable.

The tradeoff: Business ownership often produces the largest tax planning opportunities -- and the largest audit exposure. A CPA experienced with pass-through entities is not optional at this level of complexity.