What Is a K-1 When Filing Taxes?
If you’re in a partnership or multi-member LLC, one of the most important tax documents you’ll receive each year is a Schedule K-1 (Form 1065). This form reports your share of the business’s income, deductions, credits, and other financial details, and it’s required to complete your personal tax return.
Unlike employees who receive a W-2, partners are taxed on their share of the partnership’s income—whether or not they actually receive distributions.
Let’s break down what the K-1 is, how it fits into your tax return, and how partnerships are treated for federal tax purposes.
What Is a Partnership for Federal Income Tax Purposes?
For federal tax purposes, a partnership is any unincorporated business owned by two or more people (including entities) that is not taxed as a corporation. This includes:
- Traditional partnerships
- Multi-member LLCs (by default)
- Joint ventures and some real estate investment groups
A partnership is a pass-through entity, meaning the business itself does not pay income tax. Instead, income “passes through” to the individual partners, who report it on their personal tax returns.
Form 1065: The Partnership Tax Return
Each year, a partnership must file Form 1065, the U.S. Return of Partnership Income. It’s an informational return that includes:
- Total business income and deductions
- Details of each partner’s ownership
- Balance sheet and capital account changes
- Supporting schedules (like depreciation, guaranteed payments, etc.)
The IRS doesn’t assess taxes on the partnership itself—but they do require accurate reporting.
Schedule K-1 (Form 1065): What It Tells You
Each partner receives a Schedule K-1, which summarizes their share of the business’s:
- Ordinary income or loss
- Rental income
- Interest, dividends, and capital gains
- Deductions (such as Section 179, charitable contributions)
- Credits (energy, R&D, etc.)
- Guaranteed payments (compensation for services to the partnership)
- Self-employment earnings
- Capital account activity
You must include your K-1 with your Form 1040 when filing your taxes. The IRS uses it to match your reported income with the partnership’s records.
Key Sections of the K-1 Explained
- Part II: Partner Information
- Lists the partner’s type (individual, LLC, etc.), ownership percentage, and share of profit/loss
- Lists the partner’s type (individual, LLC, etc.), ownership percentage, and share of profit/loss
- Part III: Partner’s Share of Current Year Income, Deductions, Credits
- Line 1: Ordinary business income or loss
- Line 4: Guaranteed payments
- Line 11: Section 179 deduction
- Line 14: Self-employment earnings
- Line 19: Distributions received
- Line 20: Other items (may include PPP loan forgiveness, QBI info, etc.)
- Line 1: Ordinary business income or loss
Each item typically flows to a different part of your personal tax return or supporting schedules.
How Is Schedule K-1 Income Taxed?
- Ordinary income: Taxed at your individual tax rate
- Capital gains: May qualify for lower rates
- Guaranteed payments: Taxed as ordinary income and subject to self-employment tax
- Self-employment income: Applies to most active partners, subject to SE tax (15.3%)
Passive partners or limited partners may not be subject to self-employment tax, but their income is still taxable.
Difference Between Form 1065 and 1120-S
| Feature | Form 1065 (Partnership) | Form 1120-S (S Corporation) |
| Entity Type | Partnership or Multi-Member LLC | Corporation or LLC electing S-Corp status |
| Return Type | Informational Return | Informational Return |
| Income Reporting | Pass-through via Schedule K-1 | Pass-through via Schedule K-1 (1120-S) |
| Owner Compensation | Partners receive draws/guaranteed payments | Shareholders must receive reasonable W-2 salary |
| Self-Employment Tax | Applies to all income for active partners | Only salary is subject to SE tax; distributions are not |
| Flexibility | Greater flexibility in allocations | Must follow stock ownership percentages |
Choosing between these structures is a strategic decision that affects taxation, payroll, and compliance. Partnerships are more flexible, but S Corps often offer better self-employment tax savings—especially when the business is profitable.
Common K-1 Questions from Partners
1. Do I pay tax on K-1 income if I didn’t receive distributions?
Yes. You pay tax on your share of the profit, not what was actually distributed to you.
2. Can a K-1 cause me to owe taxes unexpectedly?
Yes. If the business made a profit but didn’t distribute enough cash, you may owe taxes out of pocket.
3. How do I handle losses on a K-1?
Losses may be limited based on your basis in the partnership, at-risk rules, and passive activity limitations. A tax advisor can help determine what’s deductible.
4. When are K-1s due?
Partnerships must issue K-1s by March 15 (or the extended due date). You’ll need them to file your personal tax return.
Conclusion
Understanding your Schedule K-1 from Form 1065 is critical for accurate personal tax filing and smart financial planning. As a business owner or investor in a partnership, your tax obligations don’t stop at what’s in your bank account—they follow the flow of the entity’s profits and losses.
Need help interpreting your K-1 or deciding between a partnership and S Corp? Molen & Associates has been helping business owners navigate entity structures and partnership tax returns for over 40 years. Contact us today to review your K-1 and make sure you’re filing—and planning—correctly.
