Specified Service Trade or Business: Guide for Small Businesses

A Specified Service Trade or Business (SSTB) is an important concept in the U.S. tax system, especially for business owners who want to understand the Qualified Business Income (QBI) deduction under Section 199A. The term applies to certain businesses where the main source of income comes from specified professional or service activities.

The topic can be confusing because being an SSTB does not automatically mean a business can never receive the QBI deduction. Instead, the tax treatment depends heavily on the owner’s taxable income and the applicable QBI rules.

The IRS identifies fields such as health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, investing and investment management, trading, and dealing in securities, partnership interests, or commodities as SSTB areas. Certain businesses based primarily on the reputation or skill of an owner or employee can also fall within the definition.

Specified Service Trade or Business: What Does SSTB Mean?

A Specified Service Trade or Business is a trade or business that provides services in one of the fields specifically identified under the Section 199A rules.

The classification was created as part of the rules governing the QBI deduction. In general, SSTBs receive different treatment from other qualified businesses once the taxpayer’s taxable income moves above the applicable threshold and into the phase-in range.

The most important point for business owners is that SSTB status and QBI eligibility are not exactly the same question.

Specified Service Trade or Business: Which Industries Are Included?

The IRS regulations identify several major professional and service fields as Specified Service Trade or Business categories. These are not simply broad labels; the rules contain definitions and examples that determine how a particular activity is treated.

The main SSTB categories include:

• Health
• Law
• Accounting
• Actuarial science
• Performing arts
• Consulting
• Athletics
• Financial services
• Brokerage services
• Investing and investment management
• Trading
• Dealing in securities, partnership interests, or commodities
• Certain businesses relying primarily on the reputation or skill of owners or employees

For example, a medical practice may fall within the health services category, while a law firm can fall within the legal-services category. An accounting firm, financial adviser operating within the applicable definition, or a professional consulting practice may also be an SSTB.

However, classification depends on the actual services performed. A company should not decide its tax status merely from its business name or marketing description.

Specified Service Trade or Business: The Reputation or Skill Category

One of the more misunderstood portions of the SSTB rules involves businesses where the principal asset is the reputation or skill of one or more owners or employees.

The regulations describe examples involving income from endorsing products or services, licensing an individual’s image, likeness, name, signature, voice, trademark, or other identity-related symbols, and receiving compensation for appearances at events or on radio, television, or other media.

This does not mean that every business whose owner is well known automatically becomes an SSTB. The specific regulatory definition and the nature of the income matter.

For content creators, public personalities, entertainers, and businesses built around an individual’s personal reputation, this area deserves particular attention.

Specified Service Trade or Business: Health, Law, and Accounting

Some of the most recognizable Specified Service Trade or Business categories are health, law, and accounting.

Health Businesses:

The IRS examples include physicians, pharmacists, nurses, dentists, veterinarians, physical therapists, psychologists, and similar healthcare professionals. However, the regulations also distinguish healthcare services from activities that are not directly related to providing medical services. For example, operating a health club or selling certain medical products is not automatically treated the same way as providing healthcare services.

This distinction matters for businesses that combine professional services with other commercial activities.

Law Businesses:

Law is another listed SSTB category. The IRS includes lawyers, paralegals, legal arbitrators, mediators, and similar professionals. At the same time, services that do not require skills unique to the legal field may fall outside the legal-services definition.

A law firm therefore should look at the actual work performed rather than assuming every service connected to a legal organization has identical tax treatment.

Accounting Businesses:

Accounting is expressly included in the SSTB rules. The IRS examples include accountants, enrolled agents, tax return preparers, financial auditors, and similar professionals.

For a small accounting practice, understanding the SSTB definition is especially important when evaluating the QBI deduction.

Specified Service Trade or Business: Consulting and Financial Services

Consulting is another major Specified Service Trade or Business category.

A consulting business generally provides advice and counsel to help clients solve problems or make decisions. The IRS rules define consulting for purposes of the SSTB regulations and distinguish it from certain other types of services.

This can affect many small businesses because “consulting” is a broad commercial term.

For example, a business might describe itself as:

• Business consulting
• Management consulting
• Marketing consulting
• Strategy consulting
• Technology consulting
• Financial consulting

The precise tax classification should be evaluated based on the services actually provided and the relevant regulatory definitions rather than the label alone.

Financial services are another SSTB category. The IRS regulations specifically include financial services and brokerage services, along with investing, investment management, trading, and dealing in specified financial instruments.

This makes the category broader than simply banks or traditional investment firms.

Specified Service Trade or Business: How the QBI Deduction Works

The connection between a Specified Service Trade or Business and the QBI deduction is where many business owners become confused. The QBI deduction generally allows eligible taxpayers to deduct up to 20% of qualified business income, but special rules apply to SSTBs.

The basic idea is:

• Below the applicable taxable-income threshold: An SSTB can generally be treated as a qualified business for the QBI deduction.
• Within the phase-in range: The amount of SSTB income treated as qualified business income is gradually reduced.
• Above the phase-in range: The SSTB generally does not qualify for the QBI deduction.

For 2026, the thresholds established under the IRS inflation-adjustment guidance are:

These figures apply to taxable income before the QBI deduction.

That means business owners should not look only at business revenue. The QBI analysis can depend on taxable income after applicable adjustments and deductions but before the QBI deduction itself.

Specified Service Trade or Business: 2026 Income Thresholds Explained

The 2026 Specified Service Trade or Business income thresholds are particularly important for professionals.

Consider a simplified example involving a married couple filing jointly.

Suppose the couple has taxable income before the QBI deduction of $350,000 and one spouse operates an eligible consulting practice classified as an SSTB. Because $350,000 is below the 2026 joint-filer threshold of $403,500, the SSTB limitation generally does not prevent the business from being treated as a qualified trade or business for purposes of the QBI deduction.

Now consider a simplified example where taxable income is $500,000. This falls inside the joint-filer phase-in range, which ends at $553,500. In that situation, the SSTB limitation is phased in rather than applied all at once.

Finally, if taxable income is above $553,500, the SSTB is generally excluded from the QBI deduction calculation.

These are illustrations rather than tax-return calculations. Other QBI limitations can apply, including wage and qualified-property rules.

Specified Service Trade or Business: What Happens in the Phase-In Range?

The phase-in range exists so that SSTB treatment does not change abruptly at one income level.

When taxable income falls inside the range, a portion of the SSTB’s income may continue to be treated as qualifying business income while the remainder is excluded according to the applicable percentage.

The 2025 IRS Form 8995-A instructions describe this mechanism and require Schedule A for taxpayers whose taxable income is within the relevant SSTB range.

The phase-in system means two businesses operating in the same profession can potentially have different QBI results simply because their owners have different taxable incomes.

This is an important point for small business tax planning. Business owners should not compare their tax treatment to another professional’s situation without considering differences in filing status, taxable income, business structure, and other QBI factors.

Specified Service Trade or Business: Businesses That May Avoid SSTB Treatment

Not every business with some professional or consulting activity is automatically treated as an SSTB.

The IRS provides a de minimis rule for businesses with limited SSTB activity.

For a trade or business with gross receipts of $25 million or less, if less than 10% of gross receipts come from specified services, the business generally is not treated as an SSTB.

For a trade or business with more than $25 million of gross receipts, the corresponding threshold is less than 5%.

This rule can be important for businesses that combine different types of activities.

For example, imagine a company primarily sells software but earns a relatively small portion of its revenue from consulting services. Depending on the facts and the applicable percentage test, the entire business may not be treated as an SSTB.

This is why revenue mix can matter when determining Specified Service Trade or Business status.

Specified Service Trade or Business: Related Businesses and Common Ownership

The SSTB rules also address situations where one business provides services or property to another commonly owned SSTB.

Under the applicable rules, when businesses have 50% or more common ownership, certain services or property provided to an SSTB can be treated as a separate SSTB for the common owners.

This can matter when an entrepreneur operates multiple related companies.

For example, a business owner might operate a professional practice and a separate company that provides services primarily to that practice. Simply creating separate legal entities does not automatically remove the SSTB rules.

The ownership structure, services provided, and applicable tax regulations need to be considered together.

What Does Not Count as an SSTB?

It is equally important to understand what is not automatically considered a Specified Service Trade or Business.

The IRS regulations contain specific exclusions and boundaries within the listed fields.

For example, in the health category, certain businesses such as health clubs and some payment-processing activities are not treated as providing health services merely because they operate in a healthcare-related environment. Research, testing, manufacturing, and selling certain pharmaceuticals or medical devices can also be treated differently from direct healthcare services.

Likewise, not every company that works with lawyers, doctors, or accountants becomes an SSTB.

This distinction is particularly important for small business QBI planning, because the tax outcome can depend on what the business actually does rather than which customers it serves.

How Business Structure Affects Tax Treatment?

A Specified Service Trade or Business must also be considered alongside the legal structure of the business.

A C corporation does not produce QBI for the individual Section 199A deduction. Partnerships and S corporations, however, can pass qualifying business income information through to their owners. Sole proprietorships can also generate QBI when the activity meets the requirements.

This is why a business owner should distinguish between:

• Business entity: How the company is legally organized.
• Business activity: What the company actually does.
• Taxable income: How much taxable income the owner has.

All three can affect the QBI analysis.

Changing an entity type solely because someone believes another structure will produce a QBI benefit can be risky. Business structure decisions can have payroll, legal, administrative, state-tax, and other consequences.

Records and Documentation:

Accurate documentation is important when determining Specified Service Trade or Business status.

A business should maintain records describing what it actually does and how revenue is generated.

Useful records may include:

• Service agreements
• Invoices
• Revenue reports
• Customer contracts
• Business activity descriptions
• Ownership records
• Payroll records
• Accounting records
• Separate revenue by business activity
• Documentation supporting QBI calculations

For businesses with mixed activities, separating revenue and expenses by activity can be particularly useful.

For example, a business that provides both software products and consulting services may want accounting records that clearly distinguish those revenue streams.

Good bookkeeping can make the QBI tax calculation easier to explain and support.

Common Mistakes to Avoid:

Many SSTB mistakes come from oversimplified interpretations.

Assuming Every Professional Business Loses QBI

That is not correct. SSTB status is subject to taxable-income thresholds and phase-in rules.

Looking Only at Business Revenue

QBI eligibility is not determined only by gross sales. Taxable income and the nature of the income matter.

Treating Every Consultant as Identical

The actual services provided and the applicable regulatory definition should be examined.

Ignoring Mixed Business Activities

A company may have both SSTB and non-SSTB activities, making activity-by-activity analysis important.

Using Old Income Thresholds

The QBI thresholds are adjusted over time. The 2026 amounts differ from earlier years.

Assuming a Separate LLC Changes Everything

Creating a separate legal entity does not automatically remove the SSTB rules, particularly where there is substantial common ownership and related-party activity.

A Practical Example:

• Consider a hypothetical marketing company with two revenue streams.
• The first comes from selling standardized software subscriptions.
• The second comes from consulting services provided directly by the company’s professionals.

Suppose the consulting portion is small relative to total gross receipts and falls below the applicable de minimis percentage. The business may not be treated as an SSTB under that rule, assuming all other requirements are met.

Now imagine that consulting becomes the company’s dominant activity. The SSTB analysis could be very different.

Next, consider the owner’s taxable income. Even if the company is classified as an SSTB, taxable income below the applicable 2026 threshold can allow the SSTB to be treated as a qualified business for QBI purposes. Above the threshold, the limitation begins to phase in.

This example demonstrates why SSTB classification cannot be determined from one fact alone.

How to Review Your Situation?

If you are trying to determine whether your business is a Specified Service Trade or Business, use a structured approach.

• First, write down what the business actually sells.
• Second, separate product revenue from service revenue.
• Third, identify whether any services fall within the listed SSTB fields.
• Fourth, calculate the percentage of gross receipts associated with potentially qualifying SSTB services.
• Fifth, review ownership relationships if there are multiple businesses.
• Sixth, calculate your taxable income before the QBI deduction.
• Finally, review the applicable QBI limitations and forms.

The IRS uses Form 8995 and Form 8995-A for QBI calculations. Schedule A of Form 8995-A is specifically related to SSTBs.

Because the 2026 IRS Form 8995 materials currently available online include draft versions, taxpayers should verify the final form and instructions before filing. The IRS explicitly warns users not to file draft forms or rely on draft instructions for filing.

Call to Action:

Understanding Specified Service Trade or Business rules can help small business owners avoid unnecessary confusion when reviewing the QBI deduction.

Start by identifying your actual business activities, separating service and product revenue, checking ownership relationships, and reviewing your taxable income before the QBI deduction.

Keep accurate financial records, review the current IRS rules for your tax year, and consult a qualified tax professional when your business has mixed activities, high taxable income, multiple entities, or complex ownership arrangements.

Closing Thoughts:

A Specified Service Trade or Business is not simply a list of professions that are “excluded” from the QBI deduction. The rules are more nuanced.

Health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, investment management, trading, and certain reputation-or-skill-based activities can fall within the SSTB definition.

However, SSTB status does not automatically remove the QBI deduction for every taxpayer. Taxable income plays a major role. For 2026, the QBI thresholds are $201,750 for most taxpayers, $201,775 for married filing separately, and $403,500 for married filing jointly, with higher phase-in limits applying above those amounts.

The de minimis rules can also matter for businesses that have only a small amount of specified-service activity. This can be particularly relevant to companies combining consulting with software, products, technology, or other services.

The most practical approach is to focus on what the business actually does, how its revenue is generated, who owns the businesses involved, and the owner’s taxable income. Keeping detailed accounting records can make the classification and QBI calculation much easier to support.

FAQs:

What is a Specified Service Trade or Business?

A Specified Service Trade or Business, or SSTB, is a trade or business that provides services in specified fields such as health, law, accounting, consulting, financial services, performing arts, athletics, and certain investment-related activities. Certain reputation-or-skill-based businesses can also be SSTBs.

Which businesses are considered SSTBs?

Common SSTBs include certain medical practices, law firms, accounting firms, consulting businesses, financial service providers, brokerage businesses, investment-management businesses, and businesses involving specified securities activities. The exact classification depends on the applicable regulatory definitions.

Does being an SSTB automatically eliminate the QBI deduction?

No. SSTB treatment depends heavily on taxable income. For 2026, SSTBs can generally be treated as qualified businesses when taxable income is at or below the applicable threshold. The limitation then phases in over the specified range and generally applies fully above it.

What are the 2026 SSTB income thresholds?

For 2026, the threshold is $201,750 for most returns, $201,775 for married filing separately, and $403,500 for married filing jointly. The phase-in ranges end at $276,750, $276,775, and $553,500, respectively.

Can a business with some consulting income avoid SSTB status?

Potentially. The de minimis rules can prevent a business from being classified as an SSTB when specified-service revenue stays below the applicable percentage of gross receipts. The rules use 10% for businesses with gross receipts of $25 million or less and 5% for businesses above that level.

Is a software company an SSTB?

Not automatically. A software company can have non-SSTB activities, but a substantial consulting component or other listed service activities may require additional analysis. The actual nature and mix of the company’s activities matter.

Is rental real estate an SSTB?

Rental real estate is generally analyzed under the rules for qualified trades or businesses rather than simply being classified as an SSTB. Whether rental activity qualifies for the QBI deduction depends on the applicable trade-or-business standards and other rules.

Which tax forms are used for SSTB and QBI calculations?

Form 8995 is used for the simplified QBI deduction computation when the taxpayer meets the applicable requirements. Form 8995-A is used for more complex QBI situations, with Schedule A addressing SSTBs.