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QBI Deduction for Pass-Through Businesses: A Guide

Learn about the QBI deduction for pass-through businesses and how it may reduce your tax bill.

3 min readBy Sebastian Acevedo
Small Business3 min read

What is the Qualified Business Income (QBI) Deduction?

For many small business owners, the Qualified Business Income (QBI) deduction is a valuable way to lower taxable income. This deduction, introduced by the Tax Cuts and Jobs Act (TCJA) of 2017, allows eligible pass-through businesses—such as sole proprietorships, partnerships, S corporations, and some LLCs—to deduct up to 20% of their qualified business income.

Who Qualifies for the QBI Deduction?

You may qualify for the QBI deduction if you own a pass-through business. Here's a quick rundown of basic eligibility:

  • Type of Business: Sole proprietorships, partnerships, S corporations, and some LLCs.
  • Income Thresholds: If your total taxable income is below $182,100 for single filers, or $364,200 for joint filers in 2026, you're likely to qualify without restrictions. Above these thresholds, additional limitations and requirements apply.

How is the QBI Deduction Calculated?

Your QBI deduction is generally 20% of your qualified business income. However, calculations can get complex, especially if your income exceeds the thresholds mentioned above.

  1. Determine Your Qualified Business Income:

    • QBI includes the net amount of qualified items of income, gain, deduction, and loss from any qualified trade or business.

  2. Apply the 20% Rule:

    • Calculate 20% of the QBI amount. This is your initial potential deduction.

  3. Consider Wages and Capital:

    • If your income exceeds the thresholds, your deduction may be limited to the greater of:
      • 50% of your share of W-2 wages paid by the business
      • 25% of W-2 wages plus 2.5% of the unadjusted basis, immediately after acquisition, of all qualified property.

Service Trades or Businesses

If your business is a Specified Service Trade or Business (SSTB)—such as health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, or brokerage services—your QBI deduction may be limited or phased out if your income is above the threshold.

Common Mistakes and Misunderstandings

  • Non-Business Income: Income from things like dividends, interest, or capital gains is not considered QBI.
  • Incorrect Threshold Application: Make sure to use the correct thresholds and phase-in ranges based on your filing status and year.
  • W-2 Wage Mistakes: When calculating limitations, ensure accurate reporting of W-2 wages and proper categorization of qualified property.

When to Seek Professional Help

The QBI deduction is a powerful tool, but navigating it—and ensuring you’re optimizing it within IRS rules—can be complex. Here are some scenarios where professional assistance is a good idea:

  • If your taxable income exceeds the simplified threshold.
  • If you have multiple businesses affecting your QBI.
  • If you're uncertain about whether your business qualifies as an SSTB.

Understanding the QBI deduction can be a game changer for lowering your tax bill if you own a pass-through business. But given the complexity, it’s often worthwhile to consult with a tax professional to ensure you're making the most of available deductions without stepping afoul of IRS regulations.

Ready to maximize your tax benefits? Book a consultation with Financial Ace 1040 LLC today to get personalized advice for your business needs.