The IRS Form 1065 Schedule K-1: A guide for partnerships

caseForm 1065 is the partnership tax return; Schedule K-1 (Form 1065) outlines each partner’s share of partnership income, losses, deductions, and credits.

• Don’t file the K-1 itself with your personal income tax return – you must use it to report your share of profits on Form 1040, Schedule E, and other schedules.
• The deadline for partnerships to provide K-1s is generally March 15, which is earlier than the individual filing deadline.
• Reporting is mandatory: Even if you did not withdraw cash from the business, you must report the income listed on your K-1 on your personal tax return (usually Schedule E).
• You can use a tool like pdfFiller to easily fill out, manage, and share your Schedule K-1 and other tax forms securely online, simplifying your tax season workflow.

For small business owners and investors involved in a partnership, tax season brings a specific set of challenges. Unlike a standard employee who receives a W-2, partners in a business entity must navigate the complexities of Form 1065 Schedule K-1. This document is a crucial part of the partnership’s annual tax return and directly impacts your personal taxes. This guide explains everything you need to know about Schedule K-1 and how to report it, offering clear instructions to help you navigate your tax season with confidence.

For a comprehensive guide on small business taxes, including Form 1120, Schedule C, and Form 1065, check out our dedicated article on small business tax forms.

What is Form 1065 and Schedule K-1?

Form 1065 is the U.S. Return of Partnership Income. It’s an information return, not a regular income tax return: the partnership usually doesn’t pay income tax itself. Instead, the partnership files Form 1065 so the IRS can see the business entity’s income, deductions, and tax attributes for the year.

The partnership uses the information from Form 1065 to create a Schedule K-1 for each partner. The Schedule K-1 allocates a share of the partnership’s income, deductions, and credits to each partner based on their ownership stake or agreement. So, while Form 1065 shows the partnership’s total financial picture, your Schedule K-1 shows your specific portion.

Each partner receives their own K-1, which details their share of items like business income, rental income, capital gains, and deductions. Partners then use the information from their K-1 to file their personal federal tax return, typically Form 1040.

Who receives a Schedule K-1?

This guide focuses on the partnership version (Form 1065), but several types of business entities use the Schedule K-1. If you have an ownership stake in any pass-through entity, you should expect to receive one.

The most common recipients include:

• Partners in a business partnership: general partners, limited partners, and members of a Limited Liability Company (LLC) that is taxed as a partnership. Each partner receives a Schedule K-1 (Form 1065) that details their share of the partnership’s income and deductions.
• S Corporation shareholders: If you own shares in an S corporation, you will receive a Schedule K-1 (Form 1120-S).
• Beneficiaries of trusts and estates: When a trust or estate generates income, it is often distributed to beneficiaries, who report their share using Schedule K-1 (Form 1041) on their personal tax returns.

In all these cases, the Schedule K-1 serves the same fundamental purpose: it bridges the gap between the business entity’s tax return and your personal tax return.

Who files Form 1065?

You generally must file a Form 1065 partnership tax return if:

• You operate a business entity with two or more owners and are taxed as a partnership.
• The partnership agreement allocates profits, losses, and tax attributes among partners.
• The partnership has any gross income, rental income, or other reportable activity—even if there is no net income.

The partnership files Form 1065 and all Schedules K-1 with the IRS. Each partner receives a copy of their Schedule K-1 form and uses it to prepare their personal income tax return.

Key changes to Schedule K-1 (Form 1065) for the 2025 tax year

The IRS has announced several updates for the 2025 Schedule K-1 (Form 1065). Here’s what’s changing:

• Box 13, Code X: Now includes qualified sound recording production expenses, allowing partners to see these costs listed separately.
• Box 19: Instructions are clearer, requiring partnerships to code distributions of cash, marketable securities, and other property separately. This helps partners track their assets and complete Form 7217.
• Box 20, Code ZZ: A new code has been added for gains from the sale of qualified farmland. This gives partners the information needed to elect to pay the tax on that gain in installments.
• Reminder on Form 7217: As in 2024, partners receiving property distributions (not just cash) must file Form 7217. The partnership will provide the necessary details in Box 19, code C.

How do I read and understand my Schedule K-1?

At first glance, a Schedule K-1 can look intimidating with its many boxes and codes. However, it is organized into three main parts to make the information clearer.

Part I: Information About the Partnership
This section includes the partnership’s name, address, Employer Identification Number (EIN), and whether it is a publicly traded partnership (PTP).

Start completing your Schedule K-1 (Form 1065) by entering key information about your Partnership.

Part II: Information About the Partner
This section is about you. It includes your name, address, Taxpayer Identification Number (TIN), your role (e.g., general or limited partner), ownership percentages for profit, loss, and capital at the start and end of the year, as well as details about your liabilities.

Part III: Partner’s Share of Current Year Income, Deductions, Credits, and Other Items
This is the main part of Schedule K-1, where you’ll find the numbers for your tax return. It has numbered boxes with codes for different types of income, deductions, and credits. For example:

• Box 1: Ordinary business income (or loss)
• Box 5: Interest income
• Box 9a: Net long-term capital gains (or loss)
• Box 13: Other deductions (with various codes identifying the type, like charitable contributions)

Box 14: Self-employment earnings

A fragment of the Schedule K-1 (Form 1065) uploaded to the pdfFiller editor that allows you to easily fill out the form electronically on any device.

Reading the K-1 instructions is essential. They explain each box and code, showing where to report each number on your tax return.

With pdfFiller, you can prepare your Form 1065 Schedule K-1 online and avoid the hassle of filling it out by hand. Our easy-to-use tools allow you to fill out and send your completed forms to all partners of your partnership quickly, from any device.

Where do I report K-1 income on my tax return?

After reviewing your Schedule K-1, you’ll need to transfer that information to your personal tax return (Form 1040). Income and losses from a partnership are usually reported on Schedule E (Form 1040), Supplemental Income and Loss.

Some amounts from your K-1 bypass Schedule E and go straight to other parts of your individual tax returns—for example:

• Portfolio interest → Form 1040 interest lines
• Dividends → Form 1040 dividend lines
• Capital gains → Schedule D
• Certain credits → specific credit forms
• Box 1 & 2 → Schedule E (may be passive or non-passive)
• Portfolio income (Boxes 5–9) → interest, dividend, and capital gains lines on Form 1040 / Schedule D
• Self-employment earnings (Box 14) → Schedule SE, for self-employment tax if you’re an active general partner or managing LLC member.
• Credits (Box 15) → various credit forms, which may reduce your tax bill
• Foreign taxes → Form 1116 or Schedule A, depending on whether you claim a deduction or credit

The K-1 is an informational tax form. You usually don’t attach it to your federal return unless the instructions explicitly say so, but you must use it to correctly report each category of income, supplemental income, and deductions.

What is the difference between a partnership K-1 and an S-corp K-1?

While both partnerships and S corporations use a Schedule K-1 to report pass-through income, there are important differences. The form number itself is different: partnerships issue Schedule K-1 (Form 1065), and S corporations issue Schedule K-1 (Form 1120-S). The content and tax implications also vary:

• Partnership (Form 1065): Partners are often considered self-employed. Therefore, the ordinary business income in Box 1 is frequently subject to self-employment tax. Additionally, partnerships have flexible allocation rules—partners can agree to split profits differently than their ownership percentages (if detailed in the partnership agreement).
• S Corporation (Form 1120-S): S-corp shareholders often receive a W-2 salary in addition to their K-1 distributions. The income passed through on the K-1 is generally not subject to self-employment tax, provided the shareholder paid themselves a “reasonable salary.”

How do I handle passive vs. non-passive income on a K-1?

Your Schedule K-1 will categorize your income or loss as either passive or non-passive. This distinction is critical because the passive activity rules limit your ability to deduct passive losses. Generally, you can only deduct passive losses against passive income.

• Non-passive income comes from trade or business activities in which you “materially participate.” This means you are involved in the business’s operations on a regular, continuous, and substantial basis. For most general partners, their K-1 income is non-passive.
• Passive income comes from trade or business activities in which you do not materially participate. Rental activities are often automatically considered passive, as is the income received by a limited partner.

For K-1 reporting:

• Ordinary business income in Box 1 can be passive or non-passive depending on your participation level.
• Net rental income in Box 2 is usually passive, unless you qualify as a real estate professional.
• Portfolio items like bond interest, portfolio capital gains, and some marketable securities transactions are not passive—they’re investment income instead.

Getting this classification wrong can distort your taxable income and limit future use of losses. For complex cases, like multiple K-1s or publicly traded partnership units, it’s best to consult tax professionals.

What should I do if I receive a K-1 late?

The K-1 deadline for calendar-year partnerships is the same as the Form 1065 due date: typically March 15, or the next business day if it falls on a weekend or holiday. If you haven’t received your K-1 by then:

1. Contact the partnership or tax preparer. Ask whether the partnership tax return was filed or put on extension. Partnerships can request a six-month extension, moving the K-1 due date to around September 15.
2. Consider filing an extension for your own return. If your K-1 will be late, file an extension for your personal income tax return (typically Form 4868 for individuals). Keep in mind that an extension only pushes back the filing deadline, not the deadline to pay your taxes.

If the K-1 arrives after you file, you may need to file an amended return (Form 1040-X) if the late K-1 changes your tax liability (for example, it reports income or non-passive losses).

In case you can’t reach the partnership, document your efforts to obtain the K-1 and discuss with a tax professional. In unusual cases (bankruptcy, fraud, etc.), they may advise reasonable estimates or disclosures.

Final thoughts

Understanding your Schedule K-1 is essential for anyone in a partnership or other pass-through entity. Whether it’s checking for the latest tax year updates or knowing what to do if your K-1 arrives late, being prepared is the best strategy.

With pdfFiller, you can handle your Schedule K-1 and all your other tax forms in one secure workspace. Fill out forms online, store them in the cloud, and share them securely with your tax professional and partners.

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Glossary

• Pass-through entity: A business structure, like a partnership or S corporation, that isn’t subject to corporate income tax. Instead, income, losses, deductions, and credits are “passed through” to the owners, who report them on their personal tax returns.
• Partner’s basis: This is a partner’s financial investment in a partnership for tax purposes. It includes contributed money and property, plus the partner’s share of income, minus distributions or losses.
• Material participation: A standard the IRS uses to determine if you are actively involved in a business. If you meet one of the seven “material participation tests,” your income or losses are typically considered non-passive, which affects how you can deduct them.
• Self-employment tax: A tax consisting of Social Security and Medicare taxes, primarily for individuals who work for themselves. For partners in a partnership, their share of the partnership’s earnings is usually subject to self-employment tax.