Form 1065 is the information return used by partnerships to report income, deductions, credits, and other tax items. A partnership is a flow‑through entity under IRC §701, meaning the partnership itself does not pay income tax. Instead, all items pass through to the partners.
When a partnership must file
A partnership must file Form 1065 if it:
- Has income, or
- Has deductible expenses, or
- Is an LLC classified as a partnership
A partnership does not file Form 1065 for a year in which it has no income and no deductible expenses.
Schedule K and Schedule K‑1
Form 1065 includes Schedule K, which summarizes all partnership items. Each partner receives a Schedule K‑1 showing their distributive share of:
- Ordinary business income (loss)
- Rental income
- Guaranteed payments
- Interest, dividends, royalties
- Capital gains and losses
- Section 179 deduction
- Charitable contributions
- Investment interest expense
- AMT items
- Tax‑exempt income and nondeductible expenses
- Distributions
- Foreign tax items
- Qualified business income (QBI), W‑2 wages, UBIA
Unlike S corporations, partnerships allocate items according to the partnership agreement, not ownership percentage.
Separately stated items
Certain items must be separately stated because partners may treat them differently on their own returns. Examples include:
- Section 179 deduction
- Charitable contributions
- Investment interest expense
- Capital gains and losses
- Foreign taxes
International reporting: Schedules K‑2 and K‑3
Partnerships must file Schedules K‑2 and K‑3 when they have internationally relevant items, including:
- Foreign partners
- Foreign source income
- Assets generating foreign income
- Foreign taxes paid or accrued
- Foreign entity investments
These schedules provide standardized data for partners completing Form 1116 and other international forms.
Domestic Filing Exception
A partnership may skip K‑2/K‑3 if:
- It has no or limited foreign activity
- All partners are U.S. citizens or resident aliens
- Partners are notified they will not receive K‑3 unless requested
- No partner requests K‑3 by the 1‑month date
Small Partnership Exception
A partnership is exempt from K‑2/K‑3 if it meets all of the following:
- Receipts < $250,000
- Assets < $1 million
- All K‑1s furnished on time
- Not required to file Schedule M‑3
Partner Loss Limitations
Partners may deduct losses only up to:
- Basis
- At‑risk limits
- Passive activity limits
- Excess business loss limits
Losses exceeding limits are suspended.
Filing Requirements
Form 1065 is due March 15 for calendar‑year partnerships. Extensions are available via Form 7004.
Electronic filing is required if the partnership files 10 or more returns of any type. Partnerships with more than 100 partners must e‑file unless granted a hardship waiver.
The return must be signed by a partner or LLC member.
Required Tax Year
A partnership must generally adopt the tax year of:
- Majority‑interest partners, if they share the same year
- If none, the principal partners (5% or more)
- If none, the least aggregate deferral method applies
A partnership may elect:
- Section 444 tax year (up to 3‑month deferral)
- A 52‑53‑week year
Filing Penalties
Penalties apply for:
- Late filing of Form 1065
- Missing or incorrect K‑1, K‑2, or K‑3
- Late payment of tax (if applicable)
Penalties follow §6698 and §6722.
Centralized Partnership Audit Regime (BBA)
Under the Bipartisan Budget Act of 2015, the IRS may assess tax at the partnership level through an imputed underpayment (IU).
Partnerships must designate a partnership representative with substantial U.S. presence.
Electing out
Partnerships with 100 or fewer eligible partners may elect out if all partners are:
- Individuals
- C corporations
- S corporations
- Eligible foreign corporations
- Estates of deceased partners
Partnerships cannot elect out if any partner is:
- A partnership
- A trust
- A disregarded entity
- A nominee or agent
Summary
Form 1065 is the core reporting mechanism for partnerships. Key principles:
- Partnerships are flow‑through entities
- Allocations follow the partnership agreement
- K‑1, K‑2, and K‑3 reporting is essential
- Losses are limited by basis, at‑risk, passive, and EBL rules
- Required tax year rules must be followed
- BBA audit rules apply unless the partnership elects out
These rules come directly from IRC §701–§704, §706, §708, and IRS partnership reporting guidance.