Your Spouse Got a Raise. Could Your Business Deduction Shrink?

Your spouse comes home with good news: a promotion, a new job, or a bonus they have worked hard to earn. You celebrate because this is part of the life you are building together.

Then you review your tax projection and notice something unexpected. Your business has not changed, but your qualified business income deduction may be smaller.

For married business owners, this is an important connection to understand. Your business income is only one part of your household tax picture. Your spouse's wages, bonuses, and other income can also affect the calculation.

At Mattiace Legal, we encourage business owners to look beyond one account or one company when making important decisions. Through the LIFT® framework, which stands for Legal, Insurance, Financial & Tax, we help you consider how different parts of your life and business fit together.

Your spouse's success is not the problem. The goal is to understand how changes in your household may affect your broader financial picture.

The QBI Deduction for Married Business Owners Starts at Home

The qualified business income deduction, commonly called the QBI deduction or Section 199A deduction, generally allows eligible business owners to deduct up to 20% of qualifying business income. The deduction reduces taxable income. It is not a refund of 20% of your business revenue.

That distinction matters because the value of the deduction depends on your circumstances and the limitations that apply.

Your business profit and your household's taxable income are also two different numbers. When you file a joint tax return, your spouse's taxable wages generally contribute to your combined taxable income, even though those wages are not themselves qualified business income.

Imagine bringing your business profit-and-loss statement to a planning meeting but leaving out your spouse's expected bonus. Your business records may be accurate, but the tax projection could still be incomplete.

To understand your potential deduction, ask your CPA to review:

• Your projected business profit.

• The amount that qualifies as QBI after applicable adjustments.

• Your joint taxable income before the QBI deduction.

• Any additional limitations that may affect the calculation.

You do not need to become a tax expert. You simply need to understand which numbers drive the decision. Knowing that your business earned $350,000, for example, is not enough by itself to determine your deduction.

The bottom line: Your spouse's wages are not QBI, but they can affect how much of your business income qualifies for the deduction.

Some Businesses Face Restrictions That Others Do Not

The type of business you operate also matters.

Certain professional-service businesses fall into a category known as a specified service trade or business, or SSTB. Depending on the nature of the work, this category can include fields such as law, health, accounting, and consulting.

For eligible SSTBs, the QBI deduction is subject to income-based restrictions. As taxable income rises through the applicable phase-in range, the deduction may become more limited. Above the upper threshold, QBI from an SSTB is generally no longer eligible for the deduction.

For the 2026 tax year, the relevant taxable-income thresholds for married couples filing jointly are:

• $403,500 or less: The SSTB income restriction does not apply.

• Above $403,500 but below $553,500: The restriction phases in.

• $553,500 or more: The QBI deduction is generally unavailable for income from an SSTB.

These thresholds apply to taxable income calculated before the QBI deduction. Other rules may still limit the amount you can claim, even when your income falls below the first threshold.

Businesses that are not SSTBs are treated differently. Crossing the upper threshold does not automatically eliminate their QBI deduction, although other limitations may apply.

This is why it is important to understand how your actual business activities are classified. The fact that your company is an LLC does not, by itself, determine whether it qualifies as an SSTB.

The bottom line: Before assuming you qualify for the full deduction, confirm your business classification and projected household taxable income with your tax professional.

The Same Business Can Produce Two Different Tax Outcomes

Consider a simplified example involving a qualifying professional-service business with $200,000 in QBI. Assume there are no other businesses, loss carryovers, or additional factors affecting the calculation, and no net capital gain.

In the first household, joint taxable income before the QBI deduction is $400,000. Because this amount is below the 2026 SSTB threshold, the income-based SSTB restriction does not apply. Twenty percent of $200,000 is $40,000, and the taxable-income limitation does not reduce that amount under these assumptions.

In the second household, the business still produces $200,000 in QBI, but joint taxable income before the deduction is $560,000 because of additional household income. That amount exceeds the upper SSTB threshold, so the QBI deduction for that SSTB income is generally unavailable.

The business has not changed. Its revenue and qualifying business income are the same. The difference is the household's taxable income.

This example is simplified and is not a prediction of your actual tax return. Losing a deduction also does not automatically mean your household is worse off overall. Higher income may still leave you financially better off, even after accounting for the lost tax benefit.

The point is to understand the potential impact before making decisions. If your spouse expects a significant bonus or plans to change jobs, include that information in your household tax projection while there is still time to evaluate your options.

The same approach applies to a planned investment sale, a business transaction, or another event that could increase household income. A projection prepared earlier in the year may need to be updated as circumstances change.

The bottom line: Two similar businesses can receive different QBI deductions because their owners have different household income levels.

Ask What Supports Your Goals, Not Just the Deduction

Once you understand how your household income affects the QBI deduction, the next question is what, if anything, you should do about it.

The goal is not to make income disappear. It is to evaluate legitimate planning options and determine whether they support your family's financial priorities.

Retirement contributions may be worth discussing with your CPA or financial professional. However, eligibility requirements, contribution limits, deadlines, employee obligations, and available cash all matter. Some deductions may also reduce QBI, so the overall tax benefit is not always as straightforward as it first appears.

Ask your tax professional to compare your current projection with realistic alternatives. For each option, consider:

• How much cash you need and when you need it.

• How the strategy affects taxable income and QBI.

• The estimated change in your overall tax liability.

• Any obligations involving employees or retirement plans.

• The applicable deadlines and the steps required to implement the strategy.

Suppose a proposed strategy requires $30,000 that you need for payroll, operating expenses, or business reserves. The potential tax benefit does not eliminate the need for that cash. Your business still needs to operate, and your family still needs financial flexibility.

The same principle applies to business purchases. Spending money on something you do not need simply to obtain a deduction may leave you with less cash overall. Filing separately instead of jointly is not an automatic solution, either, because doing so changes the thresholds and other parts of the tax calculation.

Your TEAM, meaning your Time, Energy, Attention, and Money, deserves a plan that you can realistically carry out. Evaluate the full financial impact before choosing a strategy based solely on the size of a potential deduction.

The bottom line: Compare the tax savings, cash requirements, and impact on your family's goals before deciding whether a strategy makes sense.

Bring the Legal, Insurance, Financial, and Tax Decisions Together

Business and household decisions rarely exist in isolation. A change in income may affect your tax projection, but it can also raise questions about business structure, insurance coverage, cash reserves, and long-term financial planning.

The LIFT® framework helps you organize these considerations and identify the right questions for each professional.

Legal

Does your business ownership structure reflect how the company actually operates? If a proposed strategy involves compensation, ownership changes, or a new employee benefit plan, determine what legal approvals and documentation may be required.

At Mattiace Legal, we help business owners evaluate the legal questions involved in their decisions. A favorable tax projection should not be treated as automatic permission to change ownership arrangements or business operations without considering the legal implications.

Insurance

If your spouse changes jobs, has your household's insurance coverage changed? Review coverage options, effective dates, and any benefits you may be leaving behind with the appropriate insurance professional.

A higher salary and a potentially smaller QBI deduction are not the only consequences worth considering. Your household's health insurance, disability coverage, and other protection needs may also deserve attention.

Financial

Where will the money come from, and how much needs to remain available? Compare retirement contributions and other proposed strategies with payroll, operating reserves, debt payments, and your family's needs outside the business.

A good plan should support your family's financial security and choices, not just this year's tax return.

Tax

Ask your CPA to calculate your household's projected taxable income, determine the applicable business classification, and explain how each proposed action could affect your deduction and total tax liability.

It is also worth confirming whether future tax projections and strategic planning are included in your current engagement. Preparing a tax return and evaluating future decisions are different tasks.

The bottom line: A well-coordinated strategy considers legal requirements, insurance coverage, available cash, and tax consequences in light of the same household goals.

Plan for the Household You Have, Not Just the Business You Run

A spouse's raise is a reason to celebrate, not something to avoid because of a possible tax consequence. The important step is understanding how changes in household income may affect your business deduction and what that means for your overall financial picture.

When you bring your legal, insurance, financial, and tax considerations together, you can make decisions based on the full situation rather than reacting to one number on a tax projection.

At Mattiace Legal, we help business owners and families identify the legal questions behind important decisions and understand how those decisions fit into their broader plans.

Schedule a complimentary 15-minute Discovery Call here to discuss your business, your family's priorities, and how a coordinated planning approach can help you move forward with greater clarity.