How to Fill Out IRS Form 8805 (w/Examples) + FAQs

A U.S. partnership with one or more foreign partners must file IRS Form 8805 to report each foreign partner’s share of effectively connected taxable income (ECTI) and the Section 1446 withholding tax paid on that income. The form is the foreign partner’s proof of withholding, similar to how a Form W-2 proves wage withholding for a U.S. employee under IRC §1446.

The problem is that partnerships often miss the quarterly deposit schedule, misclassify partners, or fail to attach Form 8805 to Form 8804, and the IRS treats those failures as separate violations. According to the Treasury Inspector General for Tax Administration, Section 1446 withholding compliance gaps cost the federal government hundreds of millions of dollars each year, and partnerships that fail to withhold owe the tax themselves plus interest and penalties.

Here is what this guide covers in plain language, with every line, every box, and every consequence explained.

• 📄 How to complete every line of Form 8805 and the related Form 8804 and Form 8813
• 💰 How to calculate Section 1446(a) withholding at the correct 37% individual or 21% corporate rate
• 🌍 How tiered partnerships, publicly traded partnerships, and Section 1446(f) transfers change the filing
• ⚠️ The seven most common mistakes that trigger IRS penalties under IRC §6651 and IRC §6722
• 🧾 Real named-partner examples, scenario tables, FAQs, and state withholding contrasts

What Form 8805 Is and Why It Exists

Form 8805, titled Foreign Partner’s Information Statement of Section 1446 Withholding Tax, is the per-partner statement that a U.S. partnership issues to each foreign partner. The form reports the foreign partner’s share of effectively connected taxable income for the tax year and the amount of Section 1446 tax the partnership withheld and paid to the IRS. The form exists because Congress added Section 1446 to the Internal Revenue Code in 1988 to stop foreign partners from receiving U.S. business income without paying U.S. tax on it.

Form 8805 plays the same role for a foreign partner that a Schedule K-1 plays for a domestic partner, except it focuses only on ECTI and the withholding tax paid. The foreign partner attaches Form 8805 to the partner’s own U.S. return, such as Form 1040-NR for a nonresident individual or Form 1120-F for a foreign corporation, to claim credit for the tax already withheld. Without Form 8805, the foreign partner cannot prove the withholding occurred, so the partner cannot claim the credit.

The consequence of skipping Form 8805 is severe for both sides. The partnership remains liable for the full withholding tax under Treas. Reg. §1.1446-1, and the foreign partner loses the ability to credit the withheld amount against final U.S. tax. A common misconception is that a foreign partner with a U.S. taxpayer identification number does not need a Form 8805, but the rule applies to every foreign partner regardless of treaty status or TIN.

The Section 1446 Withholding Framework

Section 1446 imposes withholding on a partnership’s effectively connected taxable income that is allocable to a foreign partner. The partnership withholds at the highest individual rate, currently 37% for noncorporate foreign partners, and at 21% for foreign corporate partners under the Tax Cuts and Jobs Act rate structure. The partnership pays the tax in four equal quarterly installments using Form 8813, then reports the annual totals on Form 8804 and issues Form 8805 to each foreign partner.

The plain-English meaning is that a partnership must act like a paying agent for the IRS whenever a foreign partner shares in U.S. business profits. The consequence of skipping a quarterly deposit is interest under IRC §6601 and an underpayment penalty under IRC §6655. For example, Riverside Logistics LP earns $4 million of ECTI allocable to a German individual partner and must deposit $1.48 million in four installments; missing the first deposit triggers immediate interest. The common misconception is that the partnership can wait until year-end to pay, but quarterly deposits are mandatory.

Who Must File Form 8805

Every U.S. partnership with effectively connected taxable income allocable to a foreign partner during the year must file a separate Form 8805 for each foreign partner. The rule applies to general partnerships, limited partnerships, limited liability companies taxed as partnerships, and most publicly traded partnerships. Foreign partnerships engaged in a U.S. trade or business also file when they have a U.S. ECTI allocation, under Treas. Reg. §1.1446-3.

The consequence of failing to file is a penalty of up to $310 per missed Form 8805 for tax year 2025 under IRC §6722, plus a matching penalty for the missed Form 8804. For a partnership with 50 foreign partners, that climbs past $30,000 in penalties without counting the underlying tax. A common misconception is that a partnership with zero ECTI for the year can skip the form, but the partnership still files Form 8804 reporting zero and does not need a Form 8805 only when no foreign partner had any allocable ECTI.

Line-by-Line Walkthrough of Form 8805

Form 8805 contains a header block, ten numbered lines, and four copies labeled A through D. Each copy goes to a different recipient, so a partnership with three foreign partners prepares twelve total copies. The current form and instructions live on the IRS Form 8805 page.

Header Information and Tax Year

The top of Form 8805 asks for the tax year, the partnership’s name and Employer Identification Number, the partnership’s address, and the foreign partner’s name, identifying number, address, and country code. The tax year must match the partnership’s accounting period on Form 1065. The country code uses the two-letter ISO code list in the Form 8805 instructions.

The plain-English explanation is that the header identifies who is sending money to the IRS and who gets credit for it. The consequence of a missing TIN is automatic backup-style scrutiny, because the IRS cannot match the credit to the foreign partner’s return without an ITIN or U.S. EIN. For example, when Marisol Fernández, a Mexican individual partner in Sunset Vineyards LP, applies for an ITIN using Form W-7 before the partnership files, the partnership lists the ITIN in the partner section. The misconception is that a foreign tax ID can substitute for a U.S. TIN; it cannot for Form 8805.

Line 1a Through Line 4: Identifying the Partner and Income

Line 1a asks for the foreign partner’s U.S. identifying number, and Line 1b asks for the partner’s account number, if any, used by the partnership. Line 2 reports the partner’s type of entity, such as individual, corporation, partnership, trust, or estate. Line 3 reports the partner’s country of residence for tax purposes. Line 4 reports the partnership’s tax year ending date.

The plain-English meaning is that these lines tell the IRS what kind of partner the credit belongs to. The consequence of choosing the wrong entity type on Line 2 is incorrect rate application, since corporate partners receive the 21% rate and noncorporate partners receive the 37% rate under Treas. Reg. §1.1446-3(a). For example, Hiroshi Tanaka, a Japanese individual partner in Kyoto Tech LP, must be coded as an individual on Line 2, not as a foreign corporation, even if Hiroshi holds the interest through a Japanese disregarded entity. The misconception is that a single-member foreign LLC reports as a corporation; it generally reports based on the owner’s classification.

Line 5a Through 6e: Withholding Agent and ECTI

Line 5a reports the name of the partnership filing the form, Line 5b reports the partnership’s EIN, and Line 5c reports the partnership’s address. Line 6a reports the partner’s allocable share of effectively connected taxable income. Line 6b reports any reduction for state and local taxes paid by the partnership on behalf of the partner under Treas. Reg. §1.1446-6. Lines 6c, 6d, and 6e report adjustments for partner-level deductions, losses, and credits the partner certified to the partnership on Form 8804-C.

The plain-English meaning is that these lines compute the base on which withholding tax is calculated. The consequence of overstating Form 8804-C deductions is partnership liability for the underwithheld tax plus penalties, because the partnership must reasonably rely on the certification under Treas. Reg. §1.1446-6(c). For example, Aria Kapoor, an Indian individual partner in Mumbai Trading LLC, certifies $200,000 of unrelated U.S. capital losses on Form 8804-C, and the partnership reduces ECTI on Line 6c. The misconception is that the partnership can accept any certification at face value, but the partnership must determine the certification is reasonable.

Line 7 Through Line 10: Tax, Credits, and Payments

Line 7 reports the total Section 1446 tax credit allowed to the partner, which the partner claims on the partner’s U.S. return. Line 8a reports any Section 1446 tax withheld from the partnership by another upper-tier partnership and allocated to this partner. Line 9 reports the total tax credit allowed to the partner from this partnership. Line 10 reports the amount required to be withheld from sales of partnership interests under Section 1446(f) when applicable.

The plain-English meaning is that these lines tell the foreign partner how much tax credit to claim on a Form 1040-NR or Form 1120-F. The consequence of misreporting Line 10 is that a buyer of a partnership interest may be liable under Section 1446(f)(4), which forces the partnership to withhold from future distributions. For example, when Singapore Holdings Pte Ltd sells its interest in Pacific Realty LP for $10 million, the buyer withholds 10% under Section 1446(f) and the partnership reports that amount on Line 10 of its next Form 8805 to Singapore Holdings. The misconception is that 1446(a) and 1446(f) are interchangeable; they are separate regimes with separate forms.

How Form 8805 Connects to Forms 8804, 8813, and 1042

Form 8805 never travels alone. Each Form 8805 is a per-partner attachment to Form 8804, which is the partnership’s annual summary of total Section 1446 tax. Quarterly deposits go in with Form 8813 on the 15th day of the 4th, 6th, 9th, and 12th months of the partnership’s tax year.

Form 1042, by contrast, covers fixed, determinable, annual, or periodical (FDAP) income such as U.S.-source dividends and interest paid to foreign persons under IRC §1441. A partnership can have both Form 8805 obligations for ECTI and Form 1042 obligations for FDAP in the same tax year. The consequence of confusing the two is double withholding or no withholding at all, both of which create IRS notices.

The mandatory expansion is this. The plain-English explanation is that 8805 is for active U.S. business income and 1042 is for passive U.S. income paid to foreigners. The consequence of mixing them is that the partner receives the wrong credit form and cannot match it on the return. For example, Lake Geneva Holdings AG, a Swiss corporate partner, receives a Form 8805 for its share of restaurant operating income and a Form 1042-S for its share of dividend income from a portfolio investment. The misconception is that a treaty rate on dividends carries over to ECTI, but ECTI is taxed at the full graduated U.S. rates regardless of treaty.

Filing Deadlines and Where to Send

Form 8804 and all Forms 8805 are due by the 15th day of the 3rd month after the partnership’s tax year ends, which is March 15 for calendar-year partnerships, with an automatic six-month extension available on Form 7004. Quarterly deposits on Form 8813 are due April 15, June 15, September 15, and December 15 for calendar-year partnerships. Mail Form 8804 and the 8805s to the address listed in the Form 8804 instructions, generally the Ogden, Utah service center.

The plain-English meaning is that there is a quarterly cadence and an annual cadence, and both must be respected. The consequence of late annual filing is a IRC §6651 failure-to-file penalty of 5% per month up to 25%, and the consequence of late deposits is an IRC §6656 deposit penalty up to 10%. For example, Brooklyn Brewing LP missed its September 15 deposit by 16 days and owed a 5% deposit penalty plus interest. The misconception is that an extension on Form 7004 also extends the deposit dates; it does not.

Furnishing Copies to Partners

The partnership must furnish Copy B of Form 8805 to the foreign partner by the unextended due date, even if the partnership extends Form 8804. Copy A goes to the IRS with Form 8804, Copy C is the partnership’s record, and Copy D is for the partner’s state tax records if needed. The IRS now allows electronic filing of Forms 8804 and 8805 through the Modernized e-File system.

The plain-English meaning is that the partner gets the form even when the partnership extends. The consequence of late furnishing is a penalty under IRC §6722 of up to $310 per partner. For example, Coastal Yachts LP extended Form 8804 to September 15 but still mailed Copy B to its foreign partners by March 15. The misconception is that extending Form 8804 also extends the partner statement deadline; it does not.

Three Common Filing Scenarios

Every partnership situation is different, so the table below maps the most popular scenarios and the matching consequence under Section 1446.

Filing Scenario	Resulting Treatment
U.S. LP with one foreign individual partner and $500,000 ECTI allocation	Withhold $185,000 at 37%, file one Form 8805, attach to Form 8804, deposit quarterly on Form 8813
U.S. LLC with foreign corporate partner certifying treaty-based deductions	Withhold at 21% on reduced ECTI base, retain Form 8804-C, report adjustments on Lines 6c–6e of Form 8805
Tiered partnership where lower-tier withholds and passes credit up	Lower-tier issues Form 8805 to upper-tier, upper-tier reports on Line 8a of its Form 8805 to ultimate foreign partner

The plain-English meaning is that the form’s job depends on whether the partner is an individual, a corporation, or another partnership. The consequence of treating a tiered structure as a flat structure is double withholding, because the lower-tier and upper-tier each apply 37% if the credit is not properly passed up. For example, Aspen Resort LP holds 30% of Rocky Mountain Lodge LP, and Rocky Mountain Lodge withholds on Aspen Resort’s share, then Aspen Resort reports that withholding on Line 8a of its own Form 8805 to its foreign partner Lina Müller of Germany. The misconception is that a publicly traded partnership uses Form 8805; PTPs use Form 1042-S for distributions instead.

Three Named-Partner Examples

Concrete examples make abstract rules clear, so here are three named partners and how Form 8805 applies to each.

Example 1: Marisol Fernández, Mexican Individual Partner

Marisol Fernández owns 25% of Sunset Vineyards LP, a California winery, and her allocable ECTI for 2025 is $400,000. Sunset Vineyards withholds at the 37% individual rate, sending $148,000 to the IRS in four quarterly Form 8813 deposits. The partnership then files Form 8804 reporting $148,000 of total tax and issues Marisol a Form 8805 showing $400,000 on Line 6a and $148,000 on Line 9.

The consequence for Marisol is that she files Form 1040-NR attaching Copy B of Form 8805 to claim a $148,000 credit. If her actual U.S. tax is $130,000 because of itemized deductions, she gets an $18,000 refund. The misconception that hurts taxpayers is that the 37% withholding rate is the final tax; it is only a prepayment.

Example 2: Lake Geneva Holdings AG, Swiss Corporate Partner

Lake Geneva Holdings AG owns 40% of Manhattan Restaurants LLC, and its 2025 ECTI allocation is $2 million. Manhattan Restaurants withholds at the 21% corporate rate, paying $420,000 in quarterly deposits and issuing Form 8805 with $2 million on Line 6a. Lake Geneva claims the credit on Form 1120-F, reduced by the partner’s branch profits tax exposure under IRC §884.

The consequence is that Lake Geneva must file Form 1120-F even though the U.S. activity flows through a partnership, because Section 1446 only prepays tax. The misconception is that Switzerland’s tax treaty exempts ECTI; Article 7 of the U.S.-Switzerland Tax Treaty preserves U.S. taxing rights on permanent establishment income, which ECTI generally is.

Example 3: Singapore Holdings Pte Ltd Selling Its Interest

Singapore Holdings Pte Ltd sells its 35% interest in Pacific Realty LP for $10 million in mid-2026. The buyer withholds 10% under Section 1446(f), depositing $1 million using Form 8288 and issuing Form 8288-A to Singapore Holdings. Pacific Realty then reports any pass-through 1446(a) withholding through year-end on Singapore Holdings’s final Form 8805.

The consequence is that Singapore Holdings recovers the 1446(f) withholding by filing Form 1120-F and attaching Form 8288-A, while the 1446(a) withholding flows from Form 8805. The misconception is that 1446(f) replaces 1446(a) in the year of sale; both apply for the portion of the year before the sale.

Mistakes to Avoid

Even careful partnerships fall into traps when filing Form 8805. Here are seven specific errors and the negative outcome of each.

• Mistake 1 — Skipping quarterly Form 8813 deposits and paying everything at year-end. The negative outcome is an IRC §6655 underpayment penalty plus daily interest from each missed deposit date.
• Mistake 2 — Using the 37% rate for a foreign corporate partner. The negative outcome is overwithholding, which delays the partner’s cash flow and may trigger a refund claim on Form 1120-F that takes 6–12 months.
• Mistake 3 — Failing to obtain a U.S. TIN for the foreign partner before filing. The negative outcome is rejection of the partner’s credit claim and IRS correspondence to the partnership.
• Mistake 4 — Accepting Form 8804-C certifications without reasonable diligence. The negative outcome is partnership liability for underwithheld tax under Treas. Reg. §1.1446-6(c)(2).
• Mistake 5 — Confusing Form 8805 with Form 1042-S for the same partner. The negative outcome is duplicate or missing credits and a notice from the IRS Withholding & International Individual Compliance unit.
• Mistake 6 — Forgetting to furnish Copy B to the foreign partner by the unextended due date. The negative outcome is a penalty up to $310 per partner under IRC §6722.
• Mistake 7 — Treating a publicly traded partnership distribution like a non-PTP allocation. The negative outcome is using the wrong form, since PTPs withhold on actual distributions and report on Form 1042-S.
• Mistake 8 — Ignoring state nonresident withholding obligations. The negative outcome is state penalties stacked on top of federal ones, which we discuss below.

Federal Penalties That Apply to Form 8805

Section 1446 has its own penalty stack on top of the general information return penalties. Understanding each one helps a partnership decide where to focus compliance dollars.

Failure to Withhold Under Section 1461

A partnership that fails to withhold the required Section 1446 tax is personally liable for that tax under IRC §1461, even if the foreign partner later pays the tax on the partner’s own return. The plain-English meaning is that the IRS can collect the same dollar twice — once from the partner and once from the partnership — although it usually credits the partnership when the partner pays. The consequence is that the partnership becomes the IRS’s primary collection target.

For example, when Greenfield Farms LP failed to withhold $300,000 from its Brazilian partner, the IRS issued a notice to Greenfield Farms first, not the partner. The misconception is that the partnership escapes liability if the partner files and pays; the partnership still owes interest and penalties even when the principal tax is later paid.

Failure to File Information Returns

IRC §6721 and IRC §6722 impose penalties for failing to file Forms 8805 with the IRS or furnish them to partners. The 2025 penalty schedule starts at $60 per form for filings up to 30 days late, climbs to $130, then to $310, with a maximum of $1,261,000 per year for large filers. The consequence is significant for partnerships with many foreign partners.

A common misconception is that a single Form 8804 covers everything and individual 8805 penalties do not apply. They do; each Form 8805 is a separate information return. For example, Aspen Capital Fund LP with 80 foreign LPs that filed 90 days late owes $310 × 80 × 2 = $49,600 in stacked 6721/6722 penalties.

Estimated Tax and Deposit Penalties

The Section 1446 deposit framework follows IRC §6655, with the safe harbor based on the prior year’s Section 1446 tax. The plain-English meaning is that paying 100% of last year’s Section 1446 tax in equal quarterly installments avoids the penalty. The consequence of relying on a current-year estimate that turns out low is an estimated tax penalty calculated quarter by quarter.

For example, Phoenix Solar LP paid $40,000 each quarter based on a low estimate, but actual ECTI doubled in Q4, leaving a $200,000 underpayment. Phoenix owed an estimated tax penalty on each of the four quarters because the safe harbor was not met. The misconception is that catching up in Q4 cures earlier underpayments; it does not.

State-Level Withholding Contrasts

Form 8805 is purely federal, but most U.S. states impose their own nonresident withholding on partnership income. California uses Form 592 and Form 592-B to withhold 7% on nonresident partner allocations of California-source income above $1,500. New York uses Form IT-2658 for nonresident individual partners and Form CT-2658 for corporate partners.

The plain-English meaning is that a partnership with a foreign partner often files three streams of withholding: federal Section 1446, state nonresident withholding, and sometimes a state composite return. The consequence of focusing only on Form 8805 is a state notice for unpaid nonresident tax. For example, Napa Valley Wines LP paid federal Section 1446 on time but skipped California Form 592, and the Franchise Tax Board imposed a 10% penalty plus interest. The misconception is that paying federal Section 1446 satisfies state obligations; it never does.

Composite Returns as an Alternative

Many states allow a partnership to file a composite return on behalf of nonresident partners instead of withholding individually. The plain-English meaning is that the partnership pays the partner’s state tax in one return rather than withholding and issuing a partner-level statement. The consequence is administrative simplicity but a higher effective state tax rate, because composite returns usually use the top marginal rate.

For example, Texas-based Lone Star Energy LP files a Georgia composite return covering its three foreign partners’ Georgia-source ECTI. The misconception is that a composite return replaces Form 8805; it does not, because Form 8805 is federal and the composite return is state.

Do’s and Don’ts for Form 8805 Filing

A clean compliance posture rests on a small number of habits.

• Do verify each foreign partner’s status on Form W-8BEN or Form W-8BEN-E before the first deposit, because the form establishes entity type and the correct rate.
• Do calendar quarterly deposit dates in the partnership’s accounting system, because missed deposits trigger penalties even when total tax is correct at year-end.
• Do reconcile each Form 8805’s Line 6a to the partner’s Schedule K-1 ECTI, because a mismatch invites IRS examination.
• Do furnish Copy B by the unextended due date, since the partner needs it to file a timely return.
• Do retain Forms 8804-C for at least four years after the due date of Form 8804, since the IRS can challenge reliance during an audit window.
• Don’t assume a treaty eliminates Section 1446 withholding, because treaties rarely override ECTI taxation under IRC §1446.
• Don’t combine multiple foreign partners onto one Form 8805, since each partner gets a separate form.
• Don’t ignore the 1446(f) regime when a partner sells its interest, because the buyer’s failure to withhold becomes the partnership’s problem under Section 1446(f)(4).
• Don’t rely on a foreign tax ID instead of a U.S. ITIN or EIN, since the IRS cannot match the credit without a U.S. TIN.
• Don’t forget to file an extension on Form 7004 when the partnership needs more time, because Form 8804 is treated like a return for extension purposes.

Pros and Cons of the Section 1446 Withholding System

Compared to alternatives, Section 1446 has both strengths and weaknesses.

• Pro: The system gives the IRS a reliable revenue stream from foreign partners, so collection happens at the source under IRC §1446.
• Pro: It simplifies the foreign partner’s life by prepaying federal tax, so the partner often owes nothing on the final return.
• Pro: Form 8805 standardizes the partner’s credit, so partners across many partnerships use the same documentation under the Form 8805 instructions.
• Pro: The regime supports tiered partnership structures by allowing credits to flow up via Line 8a, so multi-tier private equity funds can comply.
• Pro: The framework integrates with Section 1446(f), so partnership interest sales receive consistent treatment.
• Con: The 37% individual rate often overwithholds, since most foreign partners do not hit the top bracket on their actual U.S. return.
• Con: Quarterly deposits create administrative load, especially for partnerships with volatile ECTI.
• Con: Penalties stack quickly, with separate exposure under IRC §6651, §6655, §6721, and §6722.
• Con: Tiered structures require careful Line 8a tracking, and one missed pass-through breaks the entire credit chain.
• Con: State withholding rules add a parallel system that Section 1446 does not address.

Key Entities, People, and Concepts

Form 8805 sits inside a network of agencies, statutes, and players that every partnership controller should know. The Internal Revenue Service administers the form and processes the credits. The Treasury Department writes the regulations under Section 1446 through the Office of Tax Policy. Congress sets the underlying statute, currently rooted in IRC §1446 as amended by the Tax Cuts and Jobs Act and the SECURE 2.0 Act.

The foreign partner is the primary beneficiary of Form 8805, since the form proves the partner’s prepaid tax. The partnership’s withholding agent — usually the tax matters partner or partnership representative under IRC §6223 — bears personal responsibility for compliance. CPAs and enrolled agents preparing Form 8805 owe duties under Circular 230.

Recap of Key Rulings and Guidance

The Tax Court in InverWorld, Inc. v. Commissioner upheld the principle that a foreign entity engaged in a U.S. trade or business cannot escape ECTI characterization through offshore structuring. Notice 2018-29 provided interim guidance on Section 1446(f) before final regulations were issued in 2020. Rev. Proc. 2003-64 governs withholding foreign partnership and withholding foreign trust agreements that affect Form 8805 substitution.

The plain-English meaning is that case law and IRS guidance shape how aggressive a partnership can be in reducing ECTI on Form 8805. The consequence of ignoring these authorities is that the partnership relies on positions courts have rejected. The misconception is that informal IRS positions like FAQs are binding; only published guidance carries authority under Rev. Proc. 2024-1.

FAQs

Does every partnership with a foreign partner file Form 8805?

Yes. Every U.S. partnership with effectively connected taxable income allocable to a foreign partner files Form 8805 for that partner, even when total ECTI is small or the partner claims a treaty position.

Can a foreign partner avoid Section 1446 withholding by claiming a treaty?

No. Tax treaties rarely override Section 1446 because ECTI is U.S. trade-or-business income, and most treaties preserve U.S. taxing rights on permanent establishment profits under Article 7 model language.

Is Form 8805 the same as Form 1042-S?

No. Form 8805 reports effectively connected partnership income, while Form 1042-S reports U.S.-source FDAP income such as dividends and interest paid to foreign persons.

Does a foreign partner need a U.S. TIN to receive Form 8805?

Yes. The foreign partner needs an ITIN or EIN so the IRS can match the credit on Line 9 of Form 8805 to the partner’s U.S. return.

Can a partnership extend Form 8804 and still meet the Form 8805 deadline?

No. A Form 7004 extension extends Form 8804 only, while Copy B of Form 8805 must still reach the foreign partner by the unextended due date.

Is Section 1446(a) the same as Section 1446(f)?

No. Section 1446(a) covers ongoing ECTI withholding reported on Form 8805, while Section 1446(f) covers the 10% withholding on sales of partnership interests reported on Form 8288-A.

Does a publicly traded partnership use Form 8805?

No. A publicly traded partnership withholds on actual distributions to foreign partners and reports on Form 1042-S, not Form 8805.

Can a partnership recover Section 1446 tax it overwithheld?

Yes. A partnership can adjust later quarterly deposits, or the foreign partner can claim a refund on Form 1040-NR or Form 1120-F when actual tax is less than withholding.

Does a tiered partnership pass Section 1446 credits up to the ultimate foreign partner?

Yes. A lower-tier partnership issues Form 8805 to an upper-tier partnership, which reports the amount on Line 8a of its own Form 8805 to the ultimate foreign partner under Treas. Reg. §1.1446-5.

Is the 37% withholding rate the foreign partner’s final tax?

No. The 37% rate is a prepayment, and the partner files Form 1040-NR to compute actual tax, claim the Form 8805 credit, and receive any refund.

Does a foreign partner need to file a U.S. return after receiving Form 8805?

Yes. A foreign partner with ECTI must file a U.S. return to claim the Form 8805 credit, even when the withholding equals or exceeds the actual U.S. tax owed.

Can a partnership rely on a partner’s Form 8804-C certification?

Yes. A partnership can rely on a properly completed Form 8804-C when the partnership has no reason to doubt the certification under Treas. Reg. §1.1446-6(c).

Is e-filing available for Form 8805?

Yes. The IRS Modernized e-File system supports electronic filing of Forms 8804 and 8805, and partnerships filing 10 or more information returns must e-file under current regulations.