S Corporation Tax Planning for 2027: What Business Owners Need to Know

S corporation tax planning involves more than filing an annual tax return. Business owners need to make informed decisions about owner compensation, distributions, estimated tax payments, retirement contributions, and available deductions throughout the year. These decisions can affect how much tax a business owner pays and whether the business remains compliant with federal tax requirements.

For some businesses, electing S corporation status may provide tax advantages. For others, the additional costs of payroll, bookkeeping, and tax return preparation may outweigh the potential savings. The outcome depends on the business's profitability, the owner's role, and the overall tax situation.

As 2027 approaches, business owners should review their current tax strategy and consider whether their existing structure still makes sense. A proactive approach allows owners to evaluate their options before year-end rather than waiting until it is time to file.

How S Corporation Taxation Works

An S corporation is a federal tax classification that allows qualifying corporations, and certain eligible entities that elect the classification, to generally pass income, losses, deductions, and credits through to their shareholders. These items are reported on the shareholders' individual tax returns rather than generally being subject to federal income tax at the corporate level.

However, S corporations have specific tax and reporting requirements. Owners who work in the business must generally receive reasonable compensation for the services they provide. This compensation is treated as wages and is subject to applicable payroll taxes.

Distributions are treated differently. Distributions made to shareholders are generally not subject to employment taxes, but they are subject to applicable basis and other tax rules. They should not be used as a substitute for reasonable compensation.

The distinction between wages and distributions is an important part of S corporation tax planning. The objective is not simply to minimize salary. It is to establish compensation that reflects the services performed while evaluating the business's overall tax position.

Setting a Reasonable Salary

One of the most important decisions for an S corporation owner is determining an appropriate salary.

The IRS requires shareholder employees who provide services to the business to receive reasonable compensation before nonwage distributions are made. There is no universal salary amount or fixed percentage that applies to every S corporation. The appropriate amount depends on the facts and circumstances of the business.

Factors to consider include:

• The owner's responsibilities, experience, and qualifications.

• The time and effort devoted to the business.

• Compensation paid for comparable roles in similar businesses.

• The company's revenue, profitability, and financial position.

• The services provided by other employees and the resources used to generate income.

For example, an owner who manages daily operations, oversees employees, and performs the services that generate the company's revenue may require a different salary from an owner who primarily oversees investments and business strategy.

Setting compensation too low can expose the business to additional employment taxes, penalties, and interest if the IRS reclassifies distributions as wages. Setting compensation too high may increase payroll costs unnecessarily.

Business owners should review their compensation as responsibilities, profitability, and operations change. Maintaining documentation that supports the salary decision can also help demonstrate how the amount was determined.

The IRS provides additional guidance in its resource on S corporation compensation and medical insurance issues.

Understanding Salary Versus Distributions

Salary and distributions serve different purposes in an S corporation, and understanding the distinction is essential for tax planning.

Salary compensates an owner for services performed for the business. It is reported as wages and is generally subject to Social Security and Medicare taxes, along with applicable withholding and payroll reporting requirements.

Distributions are payments of business funds to shareholders in their capacity as owners. They are generally not subject to payroll taxes, although their income tax treatment depends on factors such as the shareholder's stock basis and the corporation's tax attributes.

Consider a business that generates a profit after operating expenses. The owner cannot simply classify all payments received from the business as distributions to avoid payroll taxes. The business must first account for reasonable compensation for the owner's services.

The amount remaining after expenses and compensation may be available for distributions, depending on the company's financial position and other applicable rules.

A sound tax planning strategy considers the owner's responsibilities, business profits, payroll costs, and cash flow together. Salary decisions should not be made in isolation or based solely on the desire to reduce employment taxes.

The Qualified Business Income Deduction

The Qualified Business Income (QBI) deduction, also known as the Section 199A deduction, may allow eligible business owners to deduct up to 20% of qualified business income, subject to applicable limitations.

Eligible owners of S corporations may qualify for this deduction, but the calculation is not simply 20% of the company's total profit. The deduction depends on the owner's taxable income, the nature of the business, and other applicable requirements.

For S corporation owners, reasonable compensation received from the business is not included in qualified business income. The business's deduction for that compensation generally reduces the income available for the QBI calculation.

Depending on the owner's circumstances, the deduction may also be affected by W-2 wage limitations, qualified property, and whether the business is classified as a specified service trade or business.

Specified service trades or businesses can include fields such as law, accounting, consulting, health care, and certain financial services. Special restrictions may apply depending on taxable income and other factors.

The rules governing the QBI deduction changed for tax years beginning after 2025. Business owners planning for 2027 should review the rules applicable to that year rather than relying on older thresholds or calculations.

Because the deduction interacts with compensation, business income, and individual taxable income, it is important to evaluate the variables together. Adjusting salary solely to increase the QBI deduction may not produce the best overall tax outcome.

For more information, the IRS provides guidance on the Qualified Business Income deduction.

Planning for Estimated Tax Payments

S corporation income generally passes through to shareholders, who may need to make estimated tax payments during the year. The corporation's tax treatment does not eliminate the owner's responsibility to plan for personal income tax obligations.

Estimated payments may be necessary when the owner's wages and other withholding are insufficient to cover the expected tax liability. Business owners should review their estimated payments as income changes. A company experiencing substantial growth may generate a higher tax liability than anticipated, while a decline in profits may affect how much the owner needs to pay.

Relying exclusively on the previous year's tax payments without considering current income can lead to an unexpected balance due or an underpayment penalty. A practical approach is to review projected income, deductions, withholding, and estimated payments periodically. This allows the owner to make adjustments while there is still time to do so.

It is also important to distinguish between a tax filing extension and a payment extension. An extension to file generally does not extend the time to pay taxes owed.

For additional guidance, review IRS Publication 505, Tax Withholding and Estimated Tax.

Coordinating Retirement Contributions With Business Income

Retirement planning can be an important part of an S corporation owner's overall tax strategy.

Depending on the business's circumstances, retirement plan options may include a SEP IRA or an individual 401(k), often called a Solo 401(k). Eligibility, contribution limits, and plan requirements vary.

For S corporation shareholder employees, retirement plan contributions based on compensation generally depend on W-2 wages rather than shareholder distributions. This means that salary decisions can affect how much an owner may contribute to a retirement plan.

For example, an owner who takes a relatively low salary may have less capacity to make certain wage-based retirement contributions. However, increasing salary solely to increase retirement contributions can also increase payroll costs.

The right approach depends on the owner's retirement goals, business profitability, cash flow, and applicable plan rules.

Business owners should review their retirement contributions before year-end, when possible, to understand their options and ensure that the business and the plan meet the relevant requirements.

Contribution limits and other retirement plan rules may change annually, so the amounts applicable to 2027 should be verified before making final calculations.

Frequently Asked Questions

How do I know if my S corporation salary is reasonable?

The IRS evaluates reasonable compensation based on the services the shareholder employee provides and the circumstances of the business. Factors include the owner's duties, experience, time commitment, and compensation for comparable work. There is no single salary amount that applies to every S corporation.

Do S corporation owners still pay self-employment tax?

S corporation shareholder employees generally pay Social Security and Medicare taxes on their wages through payroll. Their pass-through business income and distributions are generally not subject to self-employment tax in the same way as sole proprietorship income, but compensation and distribution rules must be followed.

How does the QBI deduction affect S corporation owners in 2027?

Eligible S corporation owners may qualify for a deduction of up to 20% of qualified business income, subject to applicable limitations. Reasonable compensation is excluded from QBI, and taxable income, business classification, and other requirements may affect the final deduction. Owners should review the rules and thresholds applicable to the 2027 tax year.

Make Tax Planning Part of Your Business Strategy

S corporation tax planning works best when it is part of an ongoing financial review rather than a task reserved for tax season. Decisions about compensation, distributions, estimated payments, and retirement contributions can affect both the business's cash flow and the owner's personal tax position.

Reviewing these areas throughout the year can help business owners understand their options, prepare for upcoming tax obligations, and make decisions that support their long-term goals.

Let's Talk Strategy

If you would like to review your current tax strategy and understand which planning opportunities may apply to your business, I invite you to book a short call with me using the link below so we can confirm we're the right fit for each other.

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Disclaimer: This article is for educational purposes only and does not constitute tax, legal, or financial advice. Tax outcomes depend on individual circumstances, business structure, and applicable law. Tax rules and annual limits may change. Consult a qualified tax professional for guidance specific to your situation.

About The Author

Lydia Desnoyers, CPA, is a Business Advisor and Fractional CFO at DesCPA. She works with business owners and women-led law firms on financial strategy, cash flow planning, and tax planning decisions that support long-term growth.