Partnerships are one of the most common ways for two or more people to carry on a business together. Whether formal or informal, partnerships have unique rules when it comes to taxation and filing obligations under federal law. Let’s walk through what a partnership is, how it operates, and how taxes apply to different types of partnerships—including general partnerships, limited partnerships, LLCs taxed as partnerships, and even informal arrangements.

What Is a Partnership?

A partnership is an association of two or more people who agree to carry on a trade or business together and share in its profits and losses. Partnerships can arise formally—by signing a written partnership agreement—or informally, simply by operating a business together with the intent to share profits.

Key forms include:

• General Partnership (GP): Each partner has equal rights in managing the business, and each partner is personally liable for the debts and obligations of the partnership.
• Limited Partnership (LP): At least one partner must be a general partner (with management authority and unlimited liability), while others can be limited partners (who contribute capital but have limited liability and typically no management authority).
• Limited Liability Company (LLC) taxed as a partnership: An LLC with two or more members is usually taxed as a partnership by default. Members have liability protection similar to a corporation, but income flows through to members like a partnership.
• Informal/Implied Partnerships: Even without formal documents, courts and the IRS may recognize a partnership if parties jointly operate a business and share profits.

Filing Obligations for Partnerships

Partnerships do not pay federal income tax at the entity level. Instead, they act as pass-through entities. However, they do have important filing requirements:

• Form 1065 (U.S. Return of Partnership Income): Every partnership must file this annual return to report income, deductions, gains, and losses.
• Schedule K-1 (Partner’s Share of Income, Deductions, Credits, etc.): Each partner receives a K-1 detailing their share of partnership income, which must be reported on their personal tax return.
• Due Dates: Form 1065 is generally due by March 15 (or the 15th day of the third month after the end of the partnership’s tax year). Extensions are available.
• State-Level Requirements: Many states impose additional filing obligations or franchise taxes on partnerships and LLCs.

How Partnerships Are Taxed

Partnership taxation centers on the principle of “flow-through” taxation: the partnership itself pays no federal income tax, but each partner must report and pay taxes on their share of the partnership’s income.

General Partnerships

• Income, deductions, and credits flow through to each partner in proportion to their ownership interest (or as specified in the partnership agreement).
• Partners are taxed on their share of the income whether or not it is actually distributed.

Limited Partnerships

• General partners are taxed on their distributive shares and may owe self-employment tax on partnership income.
• Limited partners generally are not subject to self-employment tax on their distributive share (unless they receive guaranteed payments for services).

LLCs Taxed as Partnerships

• Members report income on their personal returns.
• Active members may owe self-employment taxes on their share of earnings.
• LLCs have flexibility to allocate profits and losses differently from ownership percentages, if the operating agreement allows.

Informal Partnerships

• Even without a written agreement, if two or more people operate a business and share profits, the IRS may require a partnership return.
• This can surprise people who thought they were “just working together,” but tax law may view them as partners with full filing obligations.

Key Takeaways

• Partnerships are pass-through entities: income is reported on the partners’ individual returns, not taxed at the entity level.
• All partnerships, including LLCs taxed as partnerships and informal partnerships, generally must file Form 1065 and issue Schedule K-1s.
• General partners are typically subject to self-employment tax, while limited partners and passive LLC members may not be.
• Formalizing the partnership structure with an agreement helps avoid disputes and clarify tax reporting.

✅ Bottom Line: Partnerships can be flexible and powerful structures for running a business, but they come with specific filing obligations and tax consequences. Whether you are entering into a general partnership, a limited partnership, an LLC, or even an informal arrangement, understanding your tax responsibilities is essential to staying compliant and avoiding penalties.

At Dino Tax Co, we help clients navigate tax matters ranging from unfiled returns to IRS letters and levies and everything in between with clarity and confidence. If you’d like guidance on your situation, schedule a consultation today. Call or text (713) 397-4678 or email davie@dinotaxco.com. We’re here to help you take the next step.