
If you’re an ecommerce business owner, there’s one tax deduction you may have been missing entirely, and it could save you tens of thousands of dollars every year.
It’s called the Qualified Business Income (QBI) Deduction.
Let’s talk about what it is, who qualifies, how to calculate it, and how to use it strategically.
What is the Qualified Business Income Tax Deduction?
The Qualified Business Income Tax Deduction, also called the Section 199A Deduction, is a tax move that allows eligible business owners to deduct 20% of their qualified business income from their taxable income.
It applies to pass-through business income, which refers to any income that goes through to your personal tax return, instead of being taxed at the corporate level.
So, let’s say your business made $300,000 in qualified income. You might be able to deduct up to $60,000 from this figure before calculating how much you owe in federal income taxes.
That’s not a small number. And you’ll feel its impact on your tax return.

Why Qualified Business Income Tax Deduction Matters for Small Business Owners?
Business owners tend to zero in on revenue and ignore taxes until it’s too late.
They find out in March what they owe in April, and they’re shocked. By then, there’s nothing left to do but file the return.
Here’s why the QBI Deduction is one of the biggest tools small business owners can utilize:
- It can significantly bring down your tax liability: If you strategically plan for your taxes, you get savings of up to 20% of your taxable income every year.
- If you’re an ecommerce seller, you’re likely eligible: Running an Amazon FBA business or a Shopify store? Most online sellers structure their businesses as an S Corp or LLC, making them eligible for a meaningful deduction.
But there’s a catch. It doesn’t work automatically. You have to determine whether you’re qualified, calculate it correctly, and plan around it proactively. Come tax season, there’s no going back and changing past decisions that would have increased your deduction.
Plan your taxes strategically to get significant tax savings.
Go from tax scramble to tax strategy with our tax team, led by an expert CPA with over 25 years of experience. We’ll help you plan your taxes proactively and make the most of the tax tools available for you.
Learn more about our ecommerce tax services.
Who Can Claim the QBI Deduction?
The QBI Deduction applies to pass-through income.
So if your business is structured as a:
- Sole proprietorship
- Partnership
- S Corp
- Single-member LLC
- Multi-member LLC
You’re qualified to claim.
However, there are other layers to consider as well, such as:
- If your income falls below the IRS limit: For 2025 taxes, the threshold set by the IRS is $197,300 for single filers and $394,600 married taxpayers filing jointly. If your business income falls at or below these, it’s pretty straightforward. You can claim the full 20% tax deduction without worrying about more complex limitations.
- If your income exceeds the threshold: If your business earns more than the income threshold, things get a bit more layered, and the IRS starts capping how much you’re allowed to deduct. Your QBI deduction will then depend on:
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- How much your business pays in W-2 wages,
- The value of the property you own,
- Or whether your business is classified as a Specified Service Trade or Business (more on this in a moment).
If you’re making more than the IRS-set income threshold, run your numbers with your CPA or get ecommerce tax planning services to determine how much to pay yourself in W-2 wages. It’s not something to guess at, as it directly impacts how much you’re qualified to deduct.

How to Understand Specified Service Trade Or Business Rules
We’ve just talked about the IRS capping your QBI Deduction. And one of the scenarios where that can happen is if your business falls under this specific category: Specified Service Trade or Business (SSTB).
In this case, your QBI Deduction can get restricted or eliminated entirely once your income exceeds the threshold.
According to the IRS, an SSTB is any business providing professional services in fields such as:
- Health
- Law
- Financial services
- Brokerage services
- Consulting
- Performing arts
- Athletics
If you’re an ecommerce seller, the good news is that selling physical or digital products generally doesn’t count as an SSTB.
If, however, you’re running a hybrid operation, such as if you’re a coaching business that sells digital products, things can get murky. Talk to your CPA if you’re unsure whether your business qualifies as an SSTB.
Steps to Calculate the Deduction Step By Step
Calculating your QBI Deduction can be complex, depending on your situation.
But here’s a simplified guide to help you understand what your numbers should be:
Step 1: Determine Your Qualified Income
Your qualified business income is your net income. This means your business revenue, minus:
- Business expenses
- Capital gains or losses
- Dividends
- Interest income (outside of normal operations)
- Compensation paid to S Corp shareholders
This step is usually where business owners get tripped up.
If your books are a mess, your QBI will be wrong. So if you’re dealing with messy books or outdated data, your best move is to get it sorted with a reliable bookkeeping company.
Step 2: Apply the 20% Deduction
If your net income is below the income threshold or you’re not classified as an SSTB, you’re eligible to claim the full 20% deduction.
For example:
$200,000 QBI ✖️20% = $40,000 QBI Deduction
Step 3: Apply the W-2 and Property Limitations
In the case that you exceed the income threshold, these limitations apply to you, and your QBI Deduction gets capped.
That limit is determined by whichever of these is greater:
- 50% of W-2 wages paid by your business, or
- 25% of W-2 wages plus 2.5% of the original cost of your business’s physical assets.
If you’re an S Corp, you have a real advantage here. You can pay yourself a reasonable W-2 wage to expand your deduction ceiling.
Step 4: Compare QBI Deduction to Taxable Income
There’s one final cap to your QBI Deduction: It can’t be more than 20% of your taxable income, minus capital gains.
So, your actual QBI Deduction is whichever of these is lesser:
- Your calculated QBI Deduction, or
- 20% of your taxable income minus capital gains.
That’s it.
Once you’ve determined which applies to you, you now know the actual amount you can deduct from your taxable income.
How to Use Strategic Tax Planning to Maximize Deductions
Earlier, we mentioned how you need to plan for your QBI Deduction proactively. While you can claim it at the last minute, the real savings come from planning around it all year.
Here’s how to approach this tax deduction strategically:
- Choose a favorable business structure: Your entity structure has a massive impact on not only your QBI eligibility but also your deduction ceiling.
Quick note: This doesn’t mean any one structure is more beneficial than others. It still depends on the unique circumstances of your business.
For instance, if you’re a solo proprietor with a $150K revenue, you might benefit more from staying in your existing structure, while an Amazon seller doing $800K could have bigger tax savings as an S Corp.
This is exactly why having an e-commerce-specialized CPA and tax team in your corner is an advantage. They can weigh your options and structure your business in a way that’s most advantageous to you. - Manage your W-2 intentionally: If you’re an S Corp exceeding the income threshold, your W-2 wage level directly impacts your deduction ceiling. Find a balance so you don’t restrict your QBI Deduction.
- Track and time your income: Because the QBI Deduction has income thresholds, your taxable income in a given year matters significantly. Tracking your income will let you know when you’re approaching a phaseout zone and help you implement strategies to manage your taxable income.
- Keep your books accurate and current: Your QBI starts with accurate income reporting. When your books are wrong, your QBI Deduction will be wrong, too. So if you’re DIY-ing your books and struggling with inaccurate numbers, consider outsourcing your bookkeeping.
- Integrate bookkeeping and tax strategy: When your bookkeeper and CPA don’t talk to each other, or if your current system requires too many hand-offs between too many people, something will fall through the cracks.
This is exactly what makes EcomBalance Tax different. We align bookkeeping with a proactive tax strategy, making sure they work with the same financial picture. Nothing gets lost in translation, and you get better outcomes.

Frequently Asked Questions (FAQs)
More questions about the QBI Deduction? You might find the answers here:
How Does an SSTB Affect Your Eligibility for the Deduction?
If your business is classified as an SSTB, your income level determines your deduction cap.
Making below the income threshold means you still get the full deduction. Exceed that range, and your deduction starts to shrink as your income goes higher.
Can You Claim the Deduction for Multiple Businesses?
You can definitely claim the QBI Deduction for multiple businesses. Each business generates its own QBI.
What Happens If Your Income Exceeds the Phaseout Range?
For SSTB businesses, your deduction gets eliminated once your income exceeds the phase-out range.
For non-SSTB businesses, the deduction doesn’t disappear, but instead gets capped by your W-2 wage level and physical assets.
Conclusion
The QBI Deduction is one of the most significant tax tools available to ecommerce sellers who operate pass-through businesses.
It’s not as complicated as it sounds once you understand the framework behind it, but it does require three things to work properly:
- The right business structure
- Clean, up-to-date books
- Proactive tax strategy
If you’re running a 6- to 8-figure business and you’re not actively planning around QBI, or you’re not sure whether your books are accurate enough to support the right calculation, we’re here to help.
With decades of experience in ecommerce tax filing, planning, and strategy, our expert tax team understands what your financials need to look like when it matters most.


