Form 1065 & Multi-Member Partnerships

Do Foreign Partners Need ITINs to File Form 1065? Usually No — Here Is the Rule

7 min readArticle

Written byLipai WangFounder · IRS-registered tax professional

Filing path

Partnership return flow (Form 1065)

How a multi-member foreign-owned LLC reports and passes income through to its partners.

Confirm 2+ members
A multi-member LLC defaults to partnership treatment.
Prepare Form 1065
Report partnership income, deductions, and allocations.
Issue Schedule K-1s
Each partner gets a K-1 with their distributive share.
Handle withholding
Foreign partners may trigger Form 8804/8805 withholding.

Key formsForm 1065Schedule K-1Form 8804/8805

Key Takeaways

An ITIN requires a federal tax purpose; being a partner on Form 1065 is not one by itself.
A foreign partner needs a TIN when they have their own U.S. filing, withholding, treaty, or interest-sale event.
E-file may use 000-00-0000 for a partner not required to have a TIN; a paper return leaves Item E blank and attaches an identifying statement.
Do not delay the Form 1065 for ITINs that are not required, and never attach a W-7 to the partnership return.
Since June 1, 2026, CAA-filed W-7s under the partnership-interest exception must include the partnership documentation.

The rule the IRS actually states

An ITIN is issued to an individual who needs a U.S. taxpayer identification number for a federal tax purpose and is not eligible for a Social Security number. Being listed as a partner on Form 1065 is not by itself a federal tax purpose. The IRS says so directly in its guidance on what can be entered on Schedules K-1 and K-3 in place of a TIN: a foreign partner who is not required to file a U.S. return and has no U.S. tax obligation is not required to obtain a TIN merely because the partnership files. The partnership return is still complete without it, provided the partner is properly identified.

Schedule K-1 for foreign partners

When a foreign partner does need one

The answer flips when the partner has their own U.S. tax event. Common triggers: the partnership is engaged in a U.S. trade or business and allocates effectively connected income to the partner, which creates a Form 1040-NR filing obligation and section 1446 withholding reported on Form 8805; the partner wants to claim a treaty rate on U.S.-source income; the partner sells the partnership interest and section 1446(f) withholding applies; or the partner must be listed with a TIN on a withholding certificate such as Form W-8BEN for a treaty claim. In those cases the partner applies on Form W-7 under the relevant exception, and since June 1, 2026 a Certifying Acceptance Agent filing under the partnership-interest exception must attach the supporting partnership documentation.

Section 1446 withholding for foreign partners ITIN and Form 1040-NR connection

How to complete the K-1 without a TIN

There are two mechanics, and they are not interchangeable. In an authorized e-file transmission, the IRS permits 000-00-0000 in the TIN field of Schedule K-1 or K-3 for a foreign individual who is not required to obtain a TIN. On a paper return, do not use zeros or any placeholder: leave Item E blank and attach a statement identifying the partner by name, address, and country and citing the IRS guidance for why no TIN is required. Never invent a number, and never use one partner's number for another. The IRS matches K-1s to taxpayer accounts, and a fabricated TIN is a false statement on a signed return.

The ITIN mistakes that cost months

Applying for an ITIN without a tax purpose is the most common error: the W-7 is rejected or sits for the eight to sixteen weeks that mail applications currently take, while the Form 1065 deadline passes. Waiting to file the partnership return until ITINs arrive is the second: the return does not depend on them. Third is attaching a Form W-7 to Form 1065; a W-7 is filed with the applicant's own return or under a stated exception, not with the partnership return. Fourth is paying for an ITIN service as a condition of a Form 1065 package when the partners have no U.S. filing obligation; that service is buying a document the IRS will not issue.

What ForeignLLCTax does with the no-TIN case

The Multi-Member LLC (Form 1065) package asks whether each partner has a valid TIN or none. For a partner with none, it leaves K-1 Item E blank and generates the identifying statement with the IRS citation, then packages the return for paper filing with certified-mail instructions. It does not apply for ITINs, and it will not accept an invented number. If your facts include effectively connected income, treaty claims, or a partner-level Form 1040-NR, the preflight routes you to the Section 1446 material instead of selling a package that does not fit.

Prepare your Form 1065 package ($199, paper-filing, no ITIN needed)Step-by-step: file Form 1065 with foreign partners and no ITINs

Frequently Asked Questions

Will the IRS reject a Form 1065 whose K-1s have no TIN?

Not when the partner is a foreign individual with no U.S. tax obligation and the return identifies the partner and explains the missing TIN. The IRS publishes this rule for Schedules K-1 and K-3.

Can we put 000-00-0000 on a paper K-1?

No. The all-zero entry is an e-file convention only. On paper, leave Item E blank and attach the statement.

Our partner will have U.S. rental income next year. Should they apply now?

Yes, once the tax purpose exists. A partner with a Form 1040-NR filing obligation applies on Form W-7 with that return or under a listed exception; allow eight to sixteen weeks for a mailed application.

Does the $199 package include ITIN applications?

No. It prepares Form 1065 and the K-1s for the no-TIN or valid-TIN partner case for paper filing. ITIN work is a separate Form W-7 service and only makes sense when a tax purpose exists.

form 1065partnershipmulti-member LLCSchedule K-1Section 1446foreign partners

IRS Form 1065 Instructions

Official IRS source on irs.gov

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