S Corporation Tax Planning Resources

An S Corporation can provide valuable tax planning opportunities for eligible business owners, but the benefits depend on proper formation, reasonable compensation, payroll compliance, accurate bookkeeping, and ongoing tax planning.

Simply electing S Corporation status does not automatically reduce taxes.

Business owners should understand how salary, distributions, business profits, payroll taxes, shareholder basis, deductions, and tax elections work together before deciding whether S Corporation taxation is appropriate.

This resource center explains some of the most important S Corporation tax issues for business owners.

What Is an S Corporation?

An S Corporation is generally a corporation—or another eligible entity—that has elected to be taxed under Subchapter S of the Internal Revenue Code.

Unlike a traditional C Corporation, an S Corporation generally does not pay federal income tax at the corporate level on its operating income. Instead, income, deductions, losses, and credits generally pass through to the shareholders and are reported on their individual income tax returns.

The S Corporation typically files:

Form 1120-S — U.S. Income Tax Return for an S Corporation

Each shareholder generally receives a:

Schedule K-1 — Shareholder's Share of Income, Deductions, Credits, etc.

Related Tax Resource

If you are still deciding whether S Corporation taxation is appropriate for your business:

→ Explore our Business Entity Selection Resources

S Corporation Election Considerations

A business generally makes an S Corporation election by filing Form 2553, Election by a Small Business Corporation, provided it meets the applicable eligibility requirements.

An S Corporation election should normally be evaluated before it is made.

Important considerations may include:

• Expected annual business profit

• Number and type of shareholders

• Shareholder eligibility

• Payroll requirements

• Reasonable compensation

• State tax treatment

• Additional bookkeeping requirements

• Tax return preparation costs

• Retirement plan considerations

• Health insurance treatment

• Expected business growth

• Future ownership changes

An S Corporation election may be beneficial for some businesses but unnecessary—or even disadvantageous—for others.

Questions to Consider Before Making an S Election

How much profit does the business generate?

The potential benefit of S Corporation taxation often depends partly on the amount of business income remaining after reasonable shareholder compensation and other expenses.

Will the owner work in the business?

An owner who performs substantial services for the S Corporation will generally need to consider shareholder-employee compensation and payroll requirements.

What are the additional compliance costs?

Payroll processing, quarterly payroll tax filings, unemployment reporting, bookkeeping, and a separate Form 1120-S return can increase administrative costs.

How does your state treat S Corporations?

State taxation may differ significantly from federal treatment.

Official IRS Resource

IRS S Corporations →

IRS Form 2553 →

Reasonable Compensation for S Corporation Owners

Reasonable compensation is one of the most important compliance areas for owner-operated S Corporations.

A shareholder who performs services for the corporation may also be an employee of the corporation.

The IRS requires an S Corporation to pay reasonable compensation to a shareholder-employee for services provided to the corporation before making non-wage distributions to that shareholder-employee.

This means an owner generally should not simply take all business profits as distributions while reporting little or no salary.

What Is Reasonable Compensation?

There is no universal salary amount that applies to every S Corporation owner.

Factors may include:

• Duties performed

• Training and experience

• Time devoted to the business

• Responsibilities

• Comparable salaries

• Geographic location

• Industry

• Business size

• Revenue

• Complexity of the owner's duties

• Compensation paid to non-owner employees

• How the business generates its revenue

For example, compensation analysis for a physician who owns a medical practice may be very different from compensation analysis for an owner whose business income is primarily generated by employees or capital.

Why Reasonable Compensation Matters

If an S Corporation pays an owner distributions while paying insufficient wages for substantial services, the IRS may potentially reclassify some distributions as wages.

That can result in:

• Additional payroll taxes

• Interest

• Penalties

• Amended payroll filings

• Additional compliance costs

Related Resource

→ Explore our Payroll Tax Resources

S Corporation Payroll Requirements

Once a shareholder performs services as an employee of the S Corporation, proper payroll becomes an important part of maintaining compliance.

Payroll responsibilities can include:

• Establishing payroll

• Withholding federal income tax when applicable

• Social Security tax

• Medicare tax

• Employer payroll taxes

• Form 941 filings

• Federal unemployment tax requirements

• Form W-2 preparation

• State payroll filings

• State unemployment reporting

The corporation should generally keep salary payments and shareholder distributions clearly separated in its accounting records.

Salary vs. Distributions

This distinction is fundamental to S Corporation tax planning.

Salary

Salary paid to a shareholder-employee is generally treated as employee compensation and is subject to applicable payroll taxes.

Distributions

S Corporation distributions are generally not treated as wages merely because they are paid to a shareholder.

However, distributions cannot simply be substituted for reasonable compensation for services performed.

The IRS has challenged arrangements where shareholder-employees characterize payments as distributions instead of wages to avoid employment taxes.

Related Resource

→ Learn More About Payroll & Employer Tax Compliance

How S Corporation Tax Planning Works

One reason business owners consider S Corporation taxation is the difference between wages and certain pass-through business income.

A sole proprietor generally reports net business earnings that can be subject to self-employment tax.

An S Corporation shareholder-employee, by contrast, may receive both:

W-2 compensation

and

S Corporation pass-through income and distributions

The tax treatment of these amounts differs.

The IRS confirms that a shareholder's share of S Corporation income reported through Schedule K-1 is generally not self-employment income.

However, this does not mean an owner can eliminate payroll taxes simply by taking distributions instead of reasonable wages.

Example

Assume an S Corporation produces:

$150,000 of business income before owner compensation.

After evaluating the owner's services, responsibilities, industry, and comparable compensation, suppose an appropriate salary is determined.

The corporation may then have:

Owner salary
plus
Remaining corporate profit

The remaining profit passes through to the shareholder according to applicable S Corporation tax rules.

The actual tax result depends on many factors, including:

• Salary

• Business expenses

• retirement contributions

• health insurance

• shareholder basis

• distributions

• filing status

• other income

• state taxes

• qualified business income deduction considerations

This is why S Corporation planning should be based on an overall tax projection, not simply an arbitrary salary percentage.

Common S Corporation Tax Mistakes

Many S Corporation problems arise after the election is made.

1. Taking Distributions but No Salary

A shareholder who actively works for the corporation may need to receive reasonable compensation through payroll.

2. Setting an Arbitrarily Low Salary

There is no universal “60/40 rule” or fixed salary percentage established by the IRS for S Corporation owners.

Reasonable compensation should be based on facts and circumstances.

3. Treating Every Withdrawal as a Business Expense

Owner distributions are not automatically deductible business expenses.

Proper bookkeeping should distinguish between:

• Salary

• Reimbursements

• Loans

• Contributions

• Distributions

• Business expenses

4. Ignoring Shareholder Basis

Shareholder basis can affect whether:

• Losses are deductible

• Distributions are taxable

• Certain deductions are available

The IRS notes that S Corporation shareholders are responsible for maintaining information necessary to determine their stock and debt basis.

Related Resource

→ Explore S Corporation Shareholder Basis Resources

5. Mixing Personal and Business Expenses

Using a corporate bank account to routinely pay personal expenses can create bookkeeping, compensation, distribution, and substantiation problems.

Maintain separate:

• Business bank accounts

• Business credit cards

• Payroll records

• Owner distribution records

6. Incorrectly Handling Shareholder Health Insurance

Health insurance for a shareholder owning more than 2% of an S Corporation has special federal tax reporting rules.

Depending on the circumstances, premiums paid or reimbursed by the S Corporation may need to be included in the shareholder-employee's Form W-2 and may affect the shareholder's ability to claim the self-employed health insurance deduction.

The IRS provides specific reporting rules for these benefits.

7. Missing Payroll Tax Filings

Once payroll begins, the corporation may have recurring federal and state filing obligations.

Missing filings can result in significant penalties even when the underlying income tax return is filed correctly.

8. Missing the S Corporation Election Deadline

A timely Form 2553 election is important.

Businesses that miss the election deadline may potentially qualify for late-election relief depending on their circumstances, but it is preferable to plan the election correctly from the beginning.

9. Forgetting State-Level S Corporation Rules

Federal S Corporation status does not guarantee identical treatment at the state level.

Some states may:

• Require a separate election

• Impose franchise taxes

• Impose entity-level taxes

• Charge minimum taxes or fees

State taxation should therefore be included in the entity analysis.

Tax Planning Opportunities for Shareholder-Employees

Properly managed S Corporations may offer several tax-planning opportunities.

These may include:

Reasonable Compensation Planning

Review shareholder compensation periodically as:

• Revenue changes

• Duties change

• Employees are added

• Profitability increases

• The owner's role changes

Retirement Plan Planning

An S Corporation may establish retirement plans such as a:

• SEP IRA

• SIMPLE IRA

• 401(k)

• Profit-sharing plan

The best plan depends on owner compensation, number of employees, contribution goals, and other factors.

Shareholder Health Insurance Planning

Properly structured health insurance arrangements may create deductions while satisfying the special reporting requirements applicable to greater-than-2% shareholders.

Accountable Plan Reimbursements

An appropriately established accountable plan may allow an S Corporation to reimburse employees for qualifying business expenses when substantiation and other requirements are satisfied.

Potential expenses may include:

• Business mileage

• Business travel

• Supplies

• Professional expenses

• Certain home-office-related expenses when properly structured

Timing Business Expenses

Depending on the corporation's accounting method and circumstances, year-end planning may involve reviewing the timing of legitimate business expenditures.

Retirement Contributions

Year-end compensation and retirement-plan planning should be coordinated rather than considered separately.

Qualified Business Income Deduction

Some S Corporation shareholders may qualify for the Qualified Business Income (QBI) deduction, subject to applicable limitations and requirements.

The availability and amount of the deduction can depend on factors such as:

• Taxable income

• Type of business

• W-2 wages

• Qualified property

• Other limitations

Related Resource

→ Explore Business Tax Planning Resources

S Corporation Tax Planning Throughout the Year

Tax planning should not begin after December 31.

A well-managed S Corporation should consider tax issues throughout the year.

Quarterly

Review:

• Revenue and expenses

• Payroll

• Estimated tax payments

• Shareholder distributions

• Bookkeeping

• Cash flow

Mid-Year

Evaluate:

• Projected annual profit

• Reasonable compensation

• Retirement contributions

• Tax withholding

• Estimated tax payments

Before Year-End

Review:

• Final shareholder compensation

• Retirement-plan opportunities

• Health insurance reporting

• Expense reimbursements

• Shareholder basis

• Distributions

• Tax projections

• State tax obligations

After Year-End

Prepare and reconcile:

• Payroll forms

• Forms W-2 and W-3

• Form 1120-S

• Schedule K-1

• Shareholder basis records

• Individual income tax reporting

S Corporation Tax Planning Checklist

Before year-end, an S Corporation owner should generally review:

• Whether shareholder compensation remains reasonable

• Whether all payroll returns have been filed

• Whether payroll deposits are current

• Whether shareholder distributions are properly recorded

• Whether shareholder basis has been updated

• Whether business and personal expenses are separated

• Whether health insurance has been reported properly

• Whether retirement contributions should be considered

• Whether estimated personal taxes are sufficient

• Whether state tax obligations are current

• Whether bookkeeping accounts have been reconciled

• Whether year-end tax planning opportunities remain

Official IRS S Corporation Resources

For additional information, review these IRS resources.

S Corporations

IRS S Corporation Overview →

Overview of S Corporation taxation and eligibility.

Form 2553

IRS Form 2553 — Election by a Small Business Corporation →

Information regarding making an S Corporation election.

Reasonable Compensation

IRS S Corporation Compensation and Medical Insurance Issues →

IRS guidance regarding shareholder-employees, reasonable compensation, distributions, and health insurance.

Shareholder-Employees and Corporate Officers

IRS S Corporation Employees, Shareholders and Corporate Officers →

Additional IRS information concerning shareholder-employees and employment taxes.

Shareholder Basis

IRS S Corporation Stock and Debt Basis →

Guidance regarding stock basis, debt basis, losses, and distributions.

Related Z Tax & Accounting Resources

Continue exploring our business tax resource library:

→ Business Entity Selection Resources

Learn how sole proprietorships, LLCs, partnerships, S Corporations, and C Corporations differ.

→ Business Tax Planning Resources

Explore tax planning strategies and year-round business tax considerations.

→ Payroll Tax Resources

Learn about employer payroll responsibilities, payroll tax filings, and compliance.

→ Bookkeeping Resources

Understand how accurate bookkeeping supports tax preparation, tax planning, and business decisions.

→ IRS Tax Compliance Resources

Explore resources concerning IRS notices, tax filings, penalties, and representation.

Is an S Corporation Right for Your Business?

S Corporation taxation can provide meaningful opportunities for some business owners, but the decision should be based on your actual financial situation.

A useful S Corporation analysis may compare:

Current business structure

vs.

Proposed S Corporation structure

and evaluate:

• Projected business profit

• Reasonable compensation

• Payroll taxes

• Federal income taxes

• State taxes

• Payroll costs

• Tax preparation costs

• Retirement planning

• Health insurance

• Administrative requirements

• Long-term business goals

The objective is not simply to elect S Corporation status.

The objective is to determine whether an S Corporation creates an appropriate and sustainable tax structure for your business.

S Corporation Tax Planning Assistance

Z Tax & Accounting helps business owners evaluate and manage the tax considerations associated with S Corporation taxation.

Our services can include:

• S Corporation election analysis

• Form 2553 considerations

• Reasonable compensation planning

• Shareholder payroll planning

• Payroll tax compliance

• Shareholder distribution analysis

• Shareholder basis considerations

• Year-end tax planning

• Business tax preparation

• Bookkeeping coordination

Schedule an S Corporation Tax Planning Consultation →

This information is provided for general educational purposes and is not intended as individualized tax, legal, payroll, or financial advice. S Corporation taxation depends on the specific facts and circumstances of the business and its shareholders. Consult qualified tax and legal professionals before making or changing an entity or tax election.