Understanding Pass-Through Income for S-Corps and LLCs
- Gregg Jaffe
- Mar 12
- 3 min read

Understanding how income flows through to personal tax returns is essential for business owners who operate as an S-Corp or LLC. Unlike traditional corporations that pay taxes, pass-through entities shift income directly to the owners, affecting personal tax liability. Proper tax planning can help navigate this process and take advantage of available deductions.
What Is a K-1 Form and Why Does It Matter?
Owners of pass-through entities receive a Schedule K-1, which reports their share of the company’s profits, losses, and deductions. This document is similar to a W-2 for employees but is tailored to reflect business income. The IRS requires K-1 information to be reported on individual tax returns, influencing the amount of taxable income.
How K-1 Income Is Taxed
K-1 income is subject to personal income tax rates, which vary based on total earnings. For example, if a business reports $100,000 in net income, and you own 50% of the company, your K-1 will show $50,000 as your share of the income. This $50,000 will be added to your personal tax return and taxed at the applicable individual income tax rates. Be mindful that some K-1 income may be subject to additional self-employment taxes, depending on the type of business.
How Pass-Through Income Is Taxed
Since pass-through income is taxed at the individual level, it does not face corporate taxes, potentially reducing overall tax liability. However, self-employment taxes may still apply, particularly for LLC owners. If you operate as an LLC and are actively involved in the business, the IRS generally treats your income as self-employment income, subject to both Social Security and Medicare taxes (self-employment tax).
S-Corp Owners vs. LLC Owners
In contrast, S-Corp owners can potentially avoid some self-employment taxes by paying themselves a reasonable salary, with remaining business profits not subject to these taxes. Business owners should account for estimated tax payments to avoid underpayment penalties.
The 199A Deduction and Its Benefits
One major advantage for pass-through business owners is the Section 199A deduction, which allows eligible taxpayers to deduct up to 20% of their qualified business income (QBI). This deduction was introduced as part of the Tax Cuts and Jobs Act and aims to provide relief for small business owners.
Eligibility for the 199A Deduction
Eligibility for the 199A deduction depends on taxable income thresholds and the type of business activity. Business owners with taxable income exceeding certain thresholds may face a reduced deduction. For example, single filers with taxable income above $164,900 (or $329,800 for married couples filing jointly) may be subject to limitations on this deduction.
Profession-Specific Limitations
Certain professions, such as legal and medical services, may face additional restrictions if income exceeds specific thresholds. Business owners should review their qualifications annually to determine if they can claim this deduction and maximize tax savings.
Common Tax Planning Strategies for Pass-Through Businesses
Maximizing deductions and minimizing tax liability requires proactive planning. Business owners should consider strategies such as structuring salaries, reinvesting profits, and leveraging retirement contributions.
Reasonable Compensation for S-Corp Owners
The IRS requires S-Corp owners who actively work in their business to receive a reasonable salary. Paying too little in wages can trigger audits and penalties, while paying too much may reduce the benefits of the 199A deduction.
Retirement Savings Contributions
Contributions to SEP IRAs, Solo 401(k)s, or SIMPLE IRAs reduce taxable income while providing long-term financial benefits.
Expense Documentation
Thoroughly recording business expenses ensures that all eligible deductions are claimed, reducing overall taxable income.
Contact Gregg Jaffe, Tax Accountant Today
Pass-through taxation provides flexibility but also requires careful management to ensure compliance and optimize tax benefits. Understanding how K-1 income is reported and leveraging deductions like the 199A can significantly reduce tax liability.
For personalized assistance with tax planning for your pass-through business, contact Gregg Jaffe. Call 516-770-5305 or complete the contact form at https://www.greggjaffetax.com/contact to discuss your tax needs and maximize your financial opportunities.
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