Your S-Corp Salary Determines How Much of the 20% QBI Deduction You Actually Get

The 20% qualified business income deduction has been permanent for about six months now. Most S-corp owners know it exists. Fewer understand that once your income crosses a certain line, the salary you pay yourself becomes the single biggest lever controlling how much of it you get to keep.

Here’s how the deduction works, where the salary math matters, and what to look at before year-end.

What the QBI deduction actually is

The deduction — officially Section 199A — lets owners of pass-through businesses deduct 20% of their “qualified business income” from their taxable income. It doesn’t reduce your self-employment taxes or your FICA. It reduces the income that gets taxed at ordinary income rates.

For an S-corp owner, qualified business income is the profit that flows through on your K-1 — your distributions and undistributed earnings. Your W-2 salary from the S-corp is not QBI. You already paid income tax on that; it drops out of the calculation.

Under the One Big Beautiful Bill Act, signed July 4, 2025, this deduction is now permanent. It’s not expiring in 2026 or any year after that.

Two zones, two completely different calculations

Where you land relative to the income threshold determines everything.

Below the threshold (most small business owners): If your total taxable income is under roughly $197,300 (single) or $394,600 (married filing jointly), the deduction is simple. You get 20% of your QBI, period. No W-2 wage test. No limitations based on property. Your salary still needs to be reasonable — the IRS hasn’t forgotten about that — but whether you pay yourself $60,000 or $100,000 doesn’t change your QBI deduction calculation one cent.

Above the threshold: This is where the salary conversation gets real. For non-service businesses (think manufacturing, retail, construction — not law, consulting, or financial services), your QBI deduction is capped at the greater of:

• 50% of the W-2 wages your S-corp paid during the year, OR
• 25% of W-2 wages PLUS 2.5% of the original cost of qualified property

Most small service businesses don’t have significant qualified property, so the W-2 test — 50% of wages — is the one that bites.

That means if your S-corp paid $80,000 in W-2 wages to you and your employees, your maximum QBI deduction from that business is $40,000. If your actual QBI would otherwise produce a $60,000 deduction, you’ve just left $20,000 on the floor.

Service businesses face a harder ceiling

If you’re in what the IRS calls a “Specified Service Trade or Business” — which includes consulting, financial services, accounting, law, health, and similar fields — the phase-out is sharper. Once your income crosses the threshold, your deduction phases out entirely by the time you hit roughly $544,600 (married) or $272,300 (single) in 2026. Above that ceiling, a service business owner gets nothing.

This isn’t a planning opportunity — it’s a wall. If you’re running a high-income service business, the QBI deduction may simply not apply at your income level, and no salary adjustment will change that.

The salary optimization question

If you’re a non-service business owner above the threshold, you have a real planning question: does raising or lowering your salary help?

Raising your salary:

• Increases the W-2 wages figure, which raises your 50% W-2 ceiling
• But also reduces QBI (since W-2 wages paid to you lower business profit)
• And increases your FICA taxes (Social Security at 6.2% each side up to $184,500, Medicare at 1.45% each side)

Lowering your salary:

• Increases QBI (less wages paid, more profit flowing through)
• But shrinks the W-2 wages figure, which lowers the 50% ceiling
• Also carries IRS risk if it goes below reasonable compensation

There’s no universal answer. The math depends on your specific numbers — total income, W-2 wages paid to all employees (not just you), property basis, and filing status. Run it both ways before you make a decision.

One scenario where a salary increase clearly helps: you have high QBI and very few or no other W-2 employees. In that case, your own salary is the primary driver of the W-2 wages test, and a modest salary increase might open the door to a significantly larger deduction.

One scenario where it doesn’t help: you already have substantial W-2 employees, so the wage test isn’t the binding constraint. Adding more to your own salary just adds FICA and reduces profit for no QBI benefit.

The $400 minimum deduction — new in 2026

OBBBA added something small but worth knowing: if your QBI from an active trade or business exceeds $1,000, you’re guaranteed a minimum deduction of $400. This matters mostly for new or low-revenue businesses where the standard 20% calculation might otherwise round down to something negligible.

Why the permanence matters for planning

Before OBBBA, the 20% QBI deduction was set to expire after 2025. That uncertainty made multi-year planning difficult — do you elect S-corp status knowing the deduction might disappear? Do you buy real estate through an entity if the depreciation benefit vanishes?

Now you can plan knowing this deduction stays. If you’ve been hesitant to make entity decisions because of the sunset uncertainty, that reason is gone.

That said, the deduction is only as valuable as your actual QBI position. An S-corp owner with a high reasonable salary and thin margins might find the QBI benefit modest compared to the payroll compliance costs. An owner with strong profits, a reasonable salary, and employees generating additional W-2 wages is in a better position.

What to do before year-end

Check where your total taxable income is tracking for 2026. If you’re near the thresholds — single around $197K, married around $394K — a shift in income could move you into or out of the wage-limited zone.

If you’re above the threshold and running a non-service business, pull your current W-2 wages paid for the year and model the 50% cap. If your 20% QBI would exceed that cap, a higher salary for the final two quarters might be worth running.

And if you haven’t looked at your estimated tax deposits recently, now’s a good time — the QBI deduction reduces your taxable income, but it doesn’t reduce your SE tax or payroll tax. Make sure your quarterly estimates reflect the correct picture.

The S-corp election gives you a lot of tools. The QBI deduction is one of the most valuable. Worth running the numbers to make sure you’re actually using it.

For a closer look at what it takes to get the most out of an S-corp structure, see S-corp reasonable salary: what “reasonable” actually means and when an S-corp costs you money instead of saving it.

This post is general tax information, not advice specific to your situation. Tax law is complex and changes frequently. Consult a qualified tax professional before making decisions based on this content. Geiger Tax & Accounting serves clients in Amityville, NY and nationwide: (631) 532-5622, info@geigertax.com.