What Are the Benefits of Pass-Through Taxation for a Business?

The way a business is structured can determine more than who will sign contracts and who will be on the hook if something goes wrong. It can also affect how much of the business’s profits will go to the IRS and the Illinois Department of Revenue each year. Two Naperville business owners earning the same amount of profits could owe very different amounts in taxes simply because one formed a corporation and the other formed a limited liability company. Getting this choice right early can help prevent headaches later.

Structuring a company as a pass-through entity is a good way to reduce potential taxes. The main benefit of pass-through taxation is that business profits will only be taxed once. Instead of the business paying corporate tax and the owner or partners paying tax again on the income they earn through profit distributions, the profits will “pass through” and be reported on personal tax returns. For many small and mid-sized businesses, that can result in a lower overall tax bill and access to deductions. A business law attorney can provide guidance on tax planning and help a business determine whether a pass-through structure may be beneficial.

How Does Pass-Through Taxation Work?

To understand pass-through taxation, it can help to compare it to the alternative. A traditional corporation, often called a C corporation, is treated as its own taxpayer. It pays federal corporate income tax at a flat rate. In Illinois, a state corporate income tax and a personal property replacement income tax will also apply. When the corporation pays dividends to its shareholders, they will pay personal income tax on that money. This is known as double taxation.

A pass-through entity works differently. The business itself generally will not pay income taxes at the federal level. Instead, it files an informational return showing how much it earned, and each owner receives a form called a Schedule K-1. The K-1 shows each owner’s share of the profits or losses, which they will report when they file tax returns for their personal taxes. The income is taxed one time, at the owner’s individual rate.

Why Can Pass-Through Taxation Be a Smart Choice?

Avoiding double taxation is one of the most important benefits provided by a pass-through entity, but it is not the only one. Pass-through status can also offer:

• One layer of tax on business profits rather than two
• Access to the federal qualified business income deduction, which can let eligible owners deduct up to 20 percent of business income
• The ability to use business losses to offset other income on a personal tax return, within certain limits
• Fewer formal requirements and simpler record-keeping compared to a C corporation
• Flexibility in how profits are divided among owners, especially in an LLC or partnership

The qualified business income deduction was created in 2017. It was set to expire after 2025, but federal legislation passed in 2025 made it permanent. When planning business taxes for 2027, this deduction will be available for pass-through entities, although income limits and special rules for certain professional service businesses may apply.

Which Business Entities Qualify for Pass-Through Taxation?

Several business structures are taxed as pass-through entities, either automatically or by choice. They include:

Sole Proprietorships

When a person runs a business by themselves and has not registered a formal entity, they are a sole proprietor. Their business income will be reported on their personal tax return. However, a sole proprietorship offers no protection for personal assets if the business is sued or cannot pay its debts.

General and Limited Partnerships

A partnership forms when multiple people operate a business together. Illinois partnerships are governed by the Uniform Partnership Act (1997). Partnerships are treated as pass-through entities by default.

Limited Liability Companies

An LLC can be formed under the Illinois Limited Liability Company Act by filing Articles of Organization with the Illinois Secretary of State. An LLC protects owners, who are called members, from personal liability for most business debts. By default, a single-member LLC is taxed like a sole proprietorship, and a multi-member LLC is taxed like a partnership. An LLC can also choose to be taxed as an S corporation.

S Corporations

An S corporation is a federal tax status that a corporation or LLC can choose to use. To qualify, a business can have no more than 100 shareholders and only one class of stock.

What Issues Should Be Addressed When Setting Up a Pass-Through Entity?

Choosing pass-through taxation is not a one-size-fits-all decision. Several issues can affect whether it will actually lower a business’s taxes, including:

Self-Employment Taxes

For owners of sole proprietorships, partnerships, and most LLCs, self-employment taxes will apply to their share of the profits earned by a business. This tax will ensure that a person is contributing to Medicare and Social Security. Owners of S corporations may be able to reduce this burden by paying themselves a salary and taking the remaining profits as distributions. Self-employment taxes do not apply to these distributions. The IRS requires a salary to be “reasonable” for the work performed, and setting it too low can trigger penalties.

Paying Tax on Money That Has Not Been Received

Owners of pass-through entities will owe tax on their share of the profits, whether or not the business actually pays these profits out. This is sometimes called phantom income. If a business keeps cash on hand to grow, the owner could owe taxes without having the money to pay them. A well-drafted operating agreement or partnership agreement can require the business to make tax distributions to cover these costs.

Illinois Replacement Tax and the PTE Election

In Illinois, pass-through entities, including partnerships, LLCs taxed as partnerships, and S corporations, must pay a 1.5 percent personal property replacement income tax at the business level.

Illinois also offers an optional pass-through entity tax election, often called the PTE election. If a business makes this election, it will pay Illinois income tax at the rate of 4.95 percent on behalf of its owners, and the owners will receive a credit on their personal Illinois tax returns. This can help owners work around the federal cap on state and local tax deductions. As of October 2026, Illinois law has removed the original expiration date for this election. Whether the election makes sense may depend on where a business’s owners live, how much the business earns, and other factors.

Estimated Tax Payments

Business owners will usually need to make quarterly estimated tax payments to the IRS and Illinois. Missing these can lead to interest and penalties.

Can a Business Structure Be Changed Later?

Yes, although certain types of changes may lead to unexpected expenses. Converting from a C corporation to a pass-through entity may trigger taxes on gains. Switching between LLC and S corporation status will involve specific deadlines, and the correct paperwork must be filed. Many Naperville businesses start as single-member LLCs, and they may revisit their tax status as profits grow. Planning ahead with guidance from a lawyer can ensure that the right switch is made at the right time.

Contact Our Naperville Business Tax Lawyer

The right business structure will depend on a business’s goals, income, partners, and plans for growth. When forming a new company or determining whether to restructure a business, owners and partners can benefit by working with an experienced lawyer. At [[title]], our Naperville, IL business tax attorney can review the available options, prepare formation documents, and develop effective plans to minimize taxes. Call <strong class=\"makeCall\">630-756-1160</strong> to schedule a consultation.