For 2025 tax returns filed in 2026, the Section 199A deduction can still be valuable—but it is also easy to misstate. This guide explains the most common QBI mistakes for high-income pass-through owners, which forms matter, and how to avoid losing part of the deduction by using the wrong income, the wrong threshold, or the wrong rules. Under current law, the deduction applies to tax years beginning after December 31, 2017, and ending on or before December 31, 2025.
Quick takeaways
- The QBI deduction is claimed on the owner’s return, not on the partnership or S corporation return. Partnerships and S corporations pass the needed information through Schedule K-1.
- For 2025, the key taxable income thresholds are $394,600 for married filing jointly and $197,300 for all other returns. Those thresholds determine whether you can use Form 8995 or need Form 8995-A.
- Not every pass-through dollar counts. W-2 wages, S corp reasonable compensation, partnership guaranteed payments, partner service payments, capital gains, and certain investment items are not QBI.
- High-income owners of specified service trades or businesses — such as law, accounting, consulting, and health — can lose all or part of the deduction above the phase-in range.
- The QBI deduction does not reduce self-employment tax or net investment income tax.
Who this applies to
This article applies to individuals who receive pass-through income from sole proprietorships, partnerships, S corporations, and certain estates and trusts. It also matters for LLC owners because the IRS treats an LLC as a corporation, partnership, or disregarded entity depending on the number of members and elections made. Federal rules are the focus here. State treatment can differ because K-1 information may also be needed for state and local returns.
Introduction
If you own a pass-through business, the QBI deduction is one of the easiest tax benefits to get wrong. The reason is simple: the deduction depends on what the income actually is, who earned it, how the entity is classified, and where your 2025 taxable income before the QBI deduction lands. The IRS also uses different rules for taxpayers below the threshold and taxpayers above it.
For high-income filers, the mistakes are often not dramatic—they are mechanical. A partner accidentally includes guaranteed payments. An S corporation owner counts salary as QBI. A taxpayer uses the wrong form. Or the return is prepared before the final K-1 package is ready. Those small errors can reduce the deduction or trigger an amended return later.
What the QBI deduction is
The QBI deduction, also called the Section 199A deduction, is generally up to 20% of qualified business income from a qualified trade or business, plus 20% of qualified REIT dividends and qualified PTP income. But the total deduction is limited to the lesser of that amount or 20% of taxable income before the QBI deduction minus net capital gain.
The IRS says QBI can come from partnerships (other than PTPs), S corporations, sole proprietorships, and certain estates and trusts. It does not include items such as wages, S corporation reasonable compensation, partnership guaranteed payments, partner service payments for services other than as a partner, capital gains or losses, dividends, and interest that is not properly tied to the business.
Myth vs. fact
Myth: You have to materially participate in the business to get the QBI deduction. Fact: The IRS says material participation under section 469 is not required for QBI purposes, although other limits still apply.
What changed for 2025
For tax year 2025, the IRS inflation-adjusted thresholds are $197,300 for all returns other than married filing jointly and $394,600 for married filing jointly. The phase-in ranges top out at $247,300 and $494,600, respectively. Under current law, the deduction is available only through tax years ending on or before December 31, 2025, unless Congress changes the law.
Forms and schedules involved
| 2025 situation | Form or schedule | Key point |
|---|---|---|
| At or below the 2025 threshold — $394,600 MFJ or $197,300 for all other returns — and not a patron of a specified agricultural or horticultural cooperative | Form 8995 | This is the simplified computation. |
| Above the threshold, or you are a patron of a specified agricultural or horticultural cooperative, or you need the more detailed rules | Form 8995-A with applicable schedules | This is the detailed computation used for higher-income or more complex returns. |
| Partnership or S corporation entity return | Schedule K-1 attachments | The entity passes through the information; the owner claims the deduction on the individual return. |
The IRS instructions also say that partnerships and S corporations are not eligible to claim the deduction themselves. They must pass the needed information through Schedule K-1.
The most common QBI deduction mistakes
1. Counting income that is not QBI
This is the biggest and most common error. QBI is not the same as “all income from the business.” The IRS excludes W-2 wages, S corporation reasonable compensation, guaranteed payments to partners, payments to partners for services outside a partner capacity, capital gains and losses, dividends, and interest that is not properly allocable to the business.
That means a partner’s guaranteed payment is not QBI, and an S corporation shareholder’s salary is not QBI. If you include those amounts in the deduction base, the QBI deduction will be overstated.
2. Using the wrong 2025 threshold or the wrong form
For 2025, the IRS uses $394,600 MFJ and $197,300 for all other returns as the key thresholds for the simplified form. If your taxable income before the QBI deduction is at or below those amounts, you generally use Form 8995 if you are not a patron of a specified agricultural or horticultural cooperative. If you are above those amounts, you generally use Form 8995-A.
A common mistake is comparing the threshold to business profit or to adjusted gross income. The IRS instructions instead use taxable income before the QBI deduction. That number is what drives the form choice and the limitation rules.
3. Treating every professional practice the same
Many high-income owners assume all service businesses are treated alike. They are not. The IRS says specified service trades or businesses include fields such as health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, investing and investment management, trading or dealing in securities, partnership interests, or commodities, and certain reputation-based businesses.
If your 2025 taxable income before the QBI deduction is more than $247,300 for all other returns or more than $494,600 for married filing jointly, an SSTB does not qualify for the deduction. Between the threshold and the top of the phase-in range, the deduction is only partially available.
4. Ignoring the W-2 wage and UBIA limits
If income is above the threshold and the business is not an SSTB, the QBI component can still be limited. The IRS says the limitation may be based on the greater of 50% of W-2 wages or 25% of W-2 wages plus 2.5% of UBIA of qualified property.
This is where payroll records and fixed-asset records matter. The IRS provides multiple methods for figuring W-2 wages, and the wages must be allocated to the trade or business that generated the wage expense. If your records are incomplete, the deduction can be understated or overstated.
5. Forgetting loss carryforwards and aggregation rules
If you have an overall qualified business net loss carryforward, the IRS says you do not qualify for a QBI deduction in the current year unless you also have qualified REIT dividends or qualified PTP income. That is an easy rule to miss when a taxpayer has one profitable business and one loss business.
Aggregation is another area where owners make assumptions. The IRS allows aggregation only if the businesses meet the rules: 50% or more common ownership, the same tax year end, none of the businesses are SSTBs, and the businesses satisfy at least two of three operational factors. If you aggregate, keep the election and supporting records.
6. Thinking the QBI deduction lowers self-employment tax or NIIT
The IRS says the QBI deduction used for regular tax also does not reduce self-employment tax or net investment income tax. That means the deduction can lower your income tax without changing those two taxes.
This is a common planning mistake for high-income self-employed taxpayers. The QBI deduction may still be valuable, but it is not a substitute for self-employment tax planning or NIIT planning.
7. Filing before the K-1 package is final
A practical mistake can create a tax mistake. Partnerships and S corporations must furnish Schedule K-1 to owners, and the K-1 can include information needed for the owner’s federal, state, and local returns. If the K-1 changes later, the owner’s return may need to change too.
That is why many extended returns take longer. The extension buys time to finish the business return, but it does not make the underlying records final. State reporting can also be affected, so check the state instructions before filing.
Practical examples
Example 1: Partnership guaranteed payments are not QBI
Simplified illustration. A partner receives $160,000 of ordinary business income and $40,000 of guaranteed payments from a consulting partnership. The guaranteed payments are excluded from QBI, so the deduction calculation starts with the $160,000, not $200,000. If the partner included both amounts, the QBI deduction would be overstated.
Example 2: Married filing jointly below the threshold
Simplified illustration. A married couple filing jointly has $330,000 of 2025 taxable income before the QBI deduction from a non-SSTB S corporation. Because that is below the $394,600 MFJ threshold, they generally use Form 8995 if they are not patrons of a specified agricultural or horticultural cooperative. In that range, the W-2 wage and UBIA limits do not apply.
Example 3: High-income law practice above the SSTB phase-out range
Simplified illustration. A single taxpayer has $280,000 of 2025 taxable income before the QBI deduction from a law practice. Because law is an SSTB and the income is above the $247,300 top of the phase-in range for all other returns, the SSTB income does not qualify for the QBI deduction. Claiming a full 20% deduction anyway would be incorrect.
Quick pre-filing checklist
| Check before you file | Why it matters |
|---|---|
| Is every item actually QBI? | Wages, reasonable compensation, guaranteed payments, and capital items are excluded. |
| Did you use taxable income before the QBI deduction? | That is the number the IRS uses for threshold testing. |
| Is the business an SSTB? | SSTBs phase out or disappear at higher income levels. ( |
| Do you need W-2 wage and UBIA data? | These limits matter above the threshold for non-SSTBs. |
| Do you have any QBI loss carryforwards? | Prior losses can wipe out or reduce the current-year deduction. |
| Are your K-1s final and your state data aligned? | K-1 information can affect federal, state, and local returns. |
When to get professional help
Get a CPA, EA, or tax attorney involved if your return includes SSTB income, multiple businesses, a possible aggregation election, loss carryforwards, a late or corrected K-1, or multi-state reporting. These rules are fact-intensive, and the IRS instructions make clear that the calculations depend on what the income actually is and how it is reported.
FAQ
Can an employee claim the QBI deduction on W-2 wages?
No. The IRS says services performed as an employee are excluded from qualified trades or businesses for section 199A purposes. W-2 wages are not QBI.
Do partnership guaranteed payments count as QBI?
No. The IRS specifically excludes guaranteed payments from QBI.
Can an S corporation shareholder include salary in QBI?
No. The IRS says amounts received as reasonable compensation from an S corporation are not QBI.
What form should I use for the 2025 QBI deduction?
If your 2025 taxable income before the QBI deduction is at or below $394,600 MFJ or $197,300 for all other returns, and you are not a patron of a specified agricultural or horticultural cooperative, you generally use Form 8995. Otherwise, use Form 8995-A.
Does the QBI deduction reduce self-employment tax?
No. The IRS says the deduction does not reduce self-employment tax or net investment income tax.
Is rental real estate automatically QBI?
No. The IRS says rental real estate may qualify if it meets the trade-or-business standard or the rental real estate safe harbor, but it is not automatic.
Are state rules the same as federal rules?
Not always. The IRS says K-1s can include information needed for state and local tax returns, so you should check your state instructions before filing.
Bottom line
For 2025 returns filed in 2026, the QBI deduction is still available under current law, but it is easy to get wrong. The most important checks are whether the income is really QBI, whether the business is an SSTB, whether your 2025 taxable income before the QBI deduction is above the threshold, and whether W-2 wage, UBIA, loss carryforward, and K-1 rules apply. If your return is complex, slow down and verify the numbers before you file.
Source note
Sources consulted: IRS forms, instructions, publications, official IRS newsroom guidance, and related IRS pages on QBI, K-1 reporting, LLC classification, and tax thresholds.
