Qualified Business Income
The Section 199A Deduction
If you have income from a partnership, S corporation, sole proprietorship, or qualifying rental property, you may be able to deduct 20% of that income before calculating your tax. The deduction also applies to business income you receive through a K-1 from a trust or estate. The rules are straightforward at lower income levels and more complex as income rises.
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How the deduction works
Section 199A allows individuals to deduct up to 20% of their qualified business income (QBI) from pass-through entities. The deduction is taken on your individual return and reduces your taxable income, but it does not reduce self-employment tax or affect your adjusted gross income.
The deduction applies to income from partnerships, S corporations, sole proprietorships, and certain rental activities. If you receive K-1s from any of these sources, or if you operate your own business, you may qualify. The deduction is also available on QBI that flows to you from a trust or estate through your K-1.
Which businesses qualify
Most domestic businesses operated through a pass-through structure qualify. The business must be a trade or business under Section 162, which means it must be conducted with regularity and with the primary purpose of earning income or profit. Investment activities and the performance of services as an employee do not qualify.
If you have multiple businesses, each one is evaluated separately. You may be able to aggregate related businesses to combine their QBI, W-2 wages, and qualified property for a more favorable result, but the aggregation must meet specific requirements under the regulations.
The service business issue
Specified service trades or businesses (SSTBs) face additional restrictions. These include fields like law, accounting, health care, consulting, financial services, actuarial science, performing arts, and athletics. Engineering and architecture are specifically excluded from the SSTB list.
If your taxable income is below the threshold amount (indexed annually for inflation), the SSTB classification does not matter, and you get the full 20% deduction. Above the threshold, the deduction for SSTB income phases out over a defined range. Once your income exceeds the top of that range, no deduction is allowed on SSTB income.
Income above the threshold
For non-SSTB businesses, higher-income taxpayers face a different set of limitations. Above the threshold, the deduction is limited to the greater of:
- 50% of your share of W-2 wages paid by the business, or
- 25% of W-2 wages plus 2.5% of the unadjusted basis immediately after acquisition (UBIA) of qualified property held by the business
These limitations mean that capital-light businesses with few employees may generate little or no deduction for higher-income owners, while capital-intensive businesses or those with significant payroll may still provide a substantial benefit.
QBI from trusts and estates
If you are a beneficiary of a trust or estate that holds interests in qualifying businesses, your K-1 may include QBI items. The trust or estate allocates its QBI, W-2 wages, and UBIA of qualified property to you based on your share of the distributable net income. You then compute the 199A deduction on your own return using those allocated amounts and your own taxable income.
This is an area where coordination matters. The QBI detail on your K-1 must be complete and accurate for you to claim the deduction correctly. If the K-1 is missing the QBI components, you may need to go back to the trust or estate’s preparer for the information. We prepare many trust and estate returns alongside beneficiary returns, so the K-1 data is always consistent.
Rental property
Rental income can qualify for the 199A deduction, but not every rental does. The activity must rise to the level of a trade or business. The IRS has provided a safe harbor under Revenue Procedure 2019-38 for rental real estate enterprises that meet specific criteria, including at least 250 hours of rental services per year and the maintenance of separate books and records.
Many passive rental arrangements, particularly net-leased commercial properties or single-family rentals with a property manager handling everything, may not meet the threshold. Each rental activity must be evaluated on its own facts.
What we handle
- Computing the 199A deduction across all your qualifying business activities
- Evaluating SSTB classification and the phase-out impact at your income level
- Applying the W-2 wage and UBIA limitations for income above the threshold
- Incorporating QBI items from trust or estate K-1s into your individual computation
- Evaluating rental activities for 199A eligibility under the safe harbor and general rules
- Aggregation analysis for related businesses
- Coordinating the deduction with your overall tax picture, including NIIT and state tax implications
Frequently Asked Questions
What counts as qualified business income?
Qualified business income is the net income from a qualified trade or business operated through a pass-through entity: a partnership, S corporation, or sole proprietorship. It includes the ordinary income from the business but not capital gains, interest income not allocable to the business, wage income, or guaranteed payments from a partnership. QBI can also come to you through a K-1 from a trust or estate that holds interests in qualifying businesses.
I received a K-1 from a trust with QBI information. What do I do with it?
When a trust or estate distributes income that includes qualified business income, your K-1 will include the QBI components you need to compute the deduction on your own return: your share of qualified business income, W-2 wages, and UBIA of qualified property. You compute the Section 199A deduction on your individual return based on your own taxable income and the limitations that apply at your income level. Your tax preparer needs all the QBI detail from the K-1, not just the bottom-line income number.
Does rental income qualify for the QBI deduction?
It can, but not automatically. The rental activity must rise to the level of a trade or business. The IRS has provided a safe harbor under Revenue Procedure 2019-38 for certain rental real estate enterprises that meet specific requirements, including 250 hours of rental services per year and separate books and records. Many passive rental arrangements do not meet the threshold. Each rental activity must be evaluated individually.
What is a specified service trade or business and why does it matter?
Specified service trades or businesses (SSTBs) include fields like law, accounting, health care, consulting, financial services, and athletics. If your business falls into one of these categories and your taxable income exceeds the threshold amount, the QBI deduction phases out over a defined range and is eventually eliminated entirely. Below the threshold, SSTB income is treated the same as any other QBI. The classification matters most for higher-income taxpayers.