The §199A Pass-Through Deduction (2026)

The Tax Cuts and Jobs Act of 2017 (TCJA) affects the tax planning and income tax liability for many taxpayers. Among those for whom the TCJA will have a more significant effect are business owners of pass-through trades or businesses who may be eligible for the TCJA’s pass-through deduction. This course will examine the pass-through deduction authorized under § 199A of the TCJA.

The text is conceptually divided into three sections: First, calculation of the pass-through deduction for business owners whose taxable income does not exceed a threshold amount set by statute; second, calculation of the pass-through deduction for business owners whose taxable income is greater than the threshold; and finally, calculation of the pass-through deduction for business owners whose taxable income is greater than the threshold and whose businesses are considered specified service trades or businesses (SSTBs). The final chapter examines each of the business categories that are considered specified service trades or businesses and identifies those businesses that might appear to be placed in those categories but which would not be deemed SSTBs.

In examining the pass-through deduction, it:

• Provides an explanation of computation of the deduction and appropriate examples;
• Considers how W-2 wages and the unadjusted basis of qualified property immediately after its acquisition (UBIA) should be determined;
• Defines qualified business income (QBI), qualified REIT dividends and qualified publicly traded partnership (PTP) income and the special rules applicable to them;
• Examines the aggregation rules applicable to the deduction;
• Identifies trades or businesses considered specified service trades or businesses (SSTB) and the trade or business of performing services as an employee excluded from pass-through deduction eligibility; and
• Discusses the special rules applicable to computing the pass through deduction for relevant pass-through entities (RPEs), publicly traded partnerships (PTPs), trusts and estates.