Partnership Tax Filing for Foreign-Owned LLCs
Form 1065, Schedule K-1/K-3, Section 1446 withholding — all guided, step by step.
What’s Included
Verified Schedule K-1 prep when partner data exists, Section 1446 withholding figures, a filled Form 1065 cover, and a checklist of remaining official schedules to review — from one guided interview.
Form 1065 — US Return of Partnership Income
The partnership’s annual tax return reporting income, deductions, gains, and losses. Due March 15 for calendar-year partnerships (or September 15 with an extension via Form 7004).
Schedule K-1 — Partner’s Share
We compute each partner’s allocated share as a worksheet and may prepare a conservative official Schedule K-1 PDF when partner identity and allocation data are available. You still review, furnish, and file/attach each K-1 as required.
Schedule K-3 — International Items
Required for partnerships with foreign partners — international items like foreign tax credits, treaty positions, and PFIC reporting. This tool flags when K-3 applies but does not produce it; you or your CPA prepare it.
Form 8804 — Annual Withholding Return
The annual Section 1446 return summarizing withholding on ECTI allocated to foreign partners. When Section 1446 applies, the package may include a verified Form 8804 PDF for review; you still review, sign, and file it yourself or with a professional.
Form 8805 — Foreign Partner Statement
One per foreign partner, showing their share of ECTI and tax withheld under Section 1446. When Section 1446 applies, the package may include verified Form 8805 PDFs for review and furnishing.
Form 8813 — Quarterly Payment Voucher
Partnership withholding installments due April 15, June 15, September 15, and December 15. We compute each quarterly amount so you can complete the Form 8813 vouchers.
How It Works
Tell us about your partnership
Members, ownership percentages, entity types (individual, corporation, trust), and tax residency of each partner.
Report income & transactions
Guided questions about partnership income, expenses, related-party transactions, and any treaty positions your partners want to claim.
We calculate everything
K-1 allocations, conservative Schedule K-1 prep fields, and Section 1446 withholding at the correct rates, plus supporting worksheets — with K-3 and other international items flagged where they apply.
Download your complete package
A CPA-ready package: your filled Form 1065 cover, verified Schedule K-1 prep when partner data exists, computed K-1 allocation and Section 1446 withholding worksheets, verified Forms 8804/8805/8813 when applicable, and a checklist of remaining official schedules such as K-3 to complete and file. Use it to review, file yourself, or hand to your CPA.
Who Needs Partnership Filing?
If all four apply, your LLC is required to file as a partnership.
Section 1446 Withholding, Explained
Partnerships must withhold tax on ECTI allocated to foreign partners — even if no cash is distributed.
What it is
Under IRC §1446, a partnership with effectively connected taxable income (ECTI) allocated to foreign partners must withhold and remit tax on behalf of those partners. This applies whether or not the partnership actually distributes cash to the partners.
Withholding rates
37%
Individual foreign partners
21%
Corporate foreign partners
When payments are due
Quarterly installments: April 15, June 15, September 15, and December 15. The annual return (Form 8804) is due by the 15th day of the 3rd month after the partnership’s tax year ends (March 15 for calendar-year partnerships).
Forms involved
- Form 8804 — Annual return summarizing total withholding
- Form 8805 — Per-partner statement of ECTI and tax withheld
- Form 8813 — Quarterly payment voucher for installments
Penalties for Non-Filing
The IRS imposes steep penalties for late or missing partnership returns and withholding forms.
Late Form 1065
$255/month per partner (TY2025 return filed in 2026; up to 12 months)
Late Form 8804
5%/month of unpaid tax, up to 25%
Form 5472 (if required) — failure to file
$25,000 per form per year, where a Form 5472 obligation applies
Late Form 8805
Per-failure penalties under IRC §6721/6722
CPA vs. ForeignLLCTax
Traditional CPA
- 2–4 week turnaround
- May not specialize in foreign partnerships
- Back-and-forth emails for data collection
- Recurring annual fees
ForeignLLCTax.com
- Instant, guided filing — no waiting
- Built specifically for foreign-owned LLCs
- Every field explained in plain English
- Every figure computed for you — a CPA-ready package
Frequently Asked Questions
Do I need Form 1065 if my LLC had no income?
Yes. If your LLC is a multi-member entity taxed as a partnership, you must file Form 1065 regardless of whether the partnership had income. The IRS requires the return to report the partnership’s financial activity (even if zero) and to issue K-1s to all partners.
What if only some partners are foreign?
You still need Schedule K-3 for all partners (domestic and foreign). For Section 1446 withholding, Forms 8804 and 8805 are required only for foreign partners who have effectively connected taxable income. Domestic partners are not subject to Section 1446 withholding.
Can I file Form 1065 electronically?
Yes. Unlike Form 5472 (which must be paper-filed for disregarded entities), Form 1065 can be e-filed. This tool gives you a filled Form 1065 cover and computed worksheets — you or your CPA use them to complete and e-file the return through an IRS-authorized provider, or to mail it.
What’s the filing deadline?
March 15 for calendar-year partnerships. You can request an automatic 6-month extension by filing Form 7004, which moves the deadline to September 15. Section 1446 quarterly withholding payments (Form 8813) are due April 15, June 15, September 15, and December 15.
Do I also need Form 5472?
Maybe — but not automatically. A partnership does not file Form 5472 simply because a foreign partner owns 25% or more. Form 5472 is generally filed by a reporting corporation or a foreign-owned U.S. disregarded entity. Where a related-party structure is involved (for example, a foreign corporation that owns an interest in the partnership), the partnership’s related-party transactions may need a Form 5472 review. Our wizard can capture the facts so you and a tax professional can review whether Form 5472 applies — it does not prepare or file an official Form 5472 for the partnership.
Ready to file your partnership return?
Computed K-1 allocations, Section 1446 withholding figures, and a CPA-ready worksheet package — one guided interview, one price.
Start Partnership FilingGuided step-by-step filing with IRS-sourced instructions. Not sure which forms you need? Try our free Forms Wizard.