W8 form: which of the five W-8 forms a person or company needs and how to fill out W-8BEN-E

W-8BEN, W-8BEN-E, W-8ECI, W-8EXP and W-8IMY: who gives which form, what each part of W-8BEN-E asks, the mistakes that lead to 30% withholding and how long the form stays valid, in 2026.

W8 form is the common name for a family of five US tax certificates, from W-8BEN to W-8IMY. A person or company outside the United States gives one of them to a US payer, and the payer sets the US tax withheld from each payment by it.

Why a US payer asks for a W-8

The instructions for payers start from a default rate: "if you are a withholding agent, you must withhold 30% of any payment of an amount subject to chapter 3 withholding made to a payee that is a foreign person unless you can reliably associate the payment with documentation (for example, Form W-8 or Form W-9, Request for Taxpayer Identification Number and Certification) upon which you can rely to treat the payment as made to (a) a payee that is a U.S. person, or (b) a beneficial owner that is a foreign person entitled to a reduced rate of, or exemption from, withholding."

The same text defines the payer broadly: "Any person, U.S. or foreign, in whatever capacity acting, that has control, receipt, custody, disposal, or payment of an amount subject to withholding for chapter 3 purposes or a withholdable payment for chapter 4 purposes is a withholding agent."

Payers are told when to ask: "You should request a Form W-8 from any person to whom you are making a payment that you believe to be a foreign person."

The income in question is described this way: "FDAP income is in general all income included in gross income, including interest (and original issue discount (OID)), dividends (including dividend equivalents), rents, royalties, and compensation."

A payer that pays without the form carries the risk itself: "A withholding agent or payor that fails to obtain a valid Form W-8 or Form W-9 and fails to withhold as required under the presumption rules may be assessed tax at the 30% rate under chapter 3 or 4 or the 24% backup withholding rate under section 3406 (as of the revision date of these instructions), as well as interest and penalties for lack of compliance."

Five W-8 forms and who gives each

The form for individuals is W-8BEN. Its official page says: "Give Form W-8 BEN to the withholding agent or payer if you are a foreign person and you are the beneficial owner of an amount subject to withholding." Murblz experts have described how freelancers, authors, bloggers and investors fill it out part by part in the W-8BEN instructions, and the tax on US stock gains and interest in the guide to Form W-8BEN.

Companies and other organizations use W-8BEN-E: "Form W-8 BEN-E is used by foreign entities to document their status for purposes of chapter 3 and chapter 4, as well as other code provisions."

Income tied to a business inside the United States goes on W-8ECI: "You must give Form W-8 ECI to the withholding agent or payer if you are a foreign person and you are the beneficial owner of U.S. source income that is (or is deemed to be) effectively connected with the conduct of a trade or business within the United States."

W-8EXP is kept for governments and tax-exempt bodies. Its page gives the purpose: "Claim a reduced rate of, or exemption from, withholding as a foreign government, international organization, foreign central bank of issue, foreign tax-exempt organization, foreign private foundation, or government of a U.S. territory."

A payee that receives money for others gives W-8IMY. The W-8BEN-E instructions send such payees there: "You are acting as an intermediary (that is, acting not for your own account, but for the account of others as an agent, nominee, or custodian), a qualified intermediary (including a qualified intermediary acting as a qualified derivatives dealer), or a qualified securities lender (QSL). Instead, provide Form W-8IMY."

A company that earns for its own account, with income not connected with a business in the United States, gives W-8BEN-E.

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Who asks for W-8BEN-E and when

The form goes to the payer before the first payment: "Provide Form W-8BEN-E to the withholding agent or payer before income is paid or credited to you."

Foreign banks and brokers, called FFIs in the instructions, ask for it as well: "If you are an entity maintaining an account with an FFI, the FFI may request that you provide this Form W-8BEN-E in order to document your chapter 4 status."

The request can come with no US income at all. The instructions for payers explain: "If you are an FFI maintaining a financial account, you may be required to perform due diligence procedures to identify and document the account holder under the chapter 4 regulations or an applicable intergovernmental agreement (IGA) even if you are not making a payment to the account holder that is subject to withholding."

Part I: name, status, address and tax numbers

Line 1 asks for the legal name of the owner of the income: "Enter your name. If you are a disregarded entity or branch, do not enter your business name. Instead, enter the legal name of your owner (or, if you are a branch, the entity that you form a part of) (looking through multiple disregarded entities if applicable)."

Line 2 asks the company to "enter the country under whose laws you are created, organized, or governed."

Line 4 is the status for the 30% rules: "Check the one box that applies. By checking a box, you are representing that you qualify for the classification indicated."

Line 5 is the status under the rules on financial accounts: "By checking a box on this line, you are representing that you qualify for this classification in your country of residence." The box chosen there can add pages: "For most of the chapter 4 statuses, you are required to complete an additional part of this form certifying that you meet the conditions of the status indicated on line 5." Murblz experts choose the boxes on lines 4 and 5 against the company documents at a consultation.

Line 6 is the address where the company pays income tax, with limits: "Do not show the address of a financial institution (unless you are a financial institution providing your own address), a post office box, or an address used solely for mailing purposes unless it is the only address you use and it appears in your organizational documents (that is, your registered address). If you do not have a tax residence in any country, the permanent residence address is where you maintain your principal office."

Line 8 is the US number of the company: "Enter your U.S. employer identification number (EIN). An EIN is a U.S. taxpayer identification number (TIN) for entities." Line 9b takes the tax number issued to the company by its country of tax residence. Line 10 is optional: "You may also want to use line 10 to include the number of the account for which you are providing the form."

Parts II and III: branches and treaty benefits

Part II covers payments to a branch or a unit with its own registration: "Complete Part II for a disregarded entity that has its own GIIN and is receiving a withholdable payment, or for a branch (including a branch that is a disregarded entity that does not have a GIIN) operating in a jurisdiction other than the country of residence identified on line 2." The address goes on line 12: "Enter the address of the branch or disregarded entity."

Part III is where a lower treaty rate is claimed. Line 14a reads: "If you are claiming a reduced rate of, or exemption from, withholding under an income tax treaty you must enter the country where you are a resident for income tax treaty purposes and check the box to certify that you are a resident of that country."

Line 14b adds two certifications. The first is that the company does "Derive the item of income for which the treaty benefit is claimed", and the second concerns the limitation on benefits provision of the treaty.

Line 15 is for special rates and conditions: "You should indicate the specific treaty article and paragraph or subparagraph, as applicable. You should also use this space to set out the requirements you meet under the identified treaty article."

Murblz experts settle the treaty article, the rate and the limitation tests for each company at a consultation. Royalties are covered in the Murblz guide to royalty tax.

Parts IV to XXIX: status certifications

Only one of the status parts is filled in: "You should complete only one part of Parts IV through XXVIII certifying to your chapter 4 status (if required)."

The part follows from line 5: "Identify which part (if any) you should complete by reference to the box you checked on line 5."

Part XXIX lists owners when the status calls for it: "Provide the name, address, and TIN of each substantial U.S. owner in the relevant column."

Part XXX: who signs

The last part is the signature: "Form W-8BEN-E must be signed and dated by an authorized representative or officer of the beneficial owner, participating payee (for purposes of section 6050W), or account holder of an FFI requesting this form. You must check the box to certify that you have the legal capacity to sign for the entity identified on line 1 that is the beneficial owner of the income."

Mistakes that cost 30% or get the form rejected

The instructions for payers list what makes a form unreliable. The first two items read: "The form is incomplete with respect to any item that is relevant to the claims made" and "The form contains any information that is inconsistent with the claims made".

The instructions set a limit on minor errors: "However, a failure to establish an entity type or make a required certification is not inconsequential."

The instructions give an example from W-8BEN-E: "If an entity receiving a withholdable payment selects a certified deemed-compliant FFI status on line 5 of Form W-8BEN-E but does not complete the corresponding required certifications in Part V, the form is invalid for chapter 4 purposes."

A treaty claim fails the payer's check as well. That check "includes when the beneficial owner claims benefits under a treaty that does not exist or is not in force."

Without a valid form, the payer turns to presumptions: "If the presumption rules are applied to treat a person as a foreign person, the statutory 30% withholding rate applies to a payment subject to withholding under chapter 3 and cannot be reduced (for example, no treaty rate)."

When the business of the company changes

A signed form lasts for a set period: "Generally, a Form W-8BEN-E will remain valid for purposes of both chapters 3 and 4 for a period starting on the date the form is signed and ending on the last day of the third succeeding calendar year, unless a change in circumstances makes any information on the form incorrect."

The signature carries a promise: "By signing Form W-8BEN-E, the authorized representative, officer, or agent of the entity also agrees to provide a new form within 30 days following a change in circumstances affecting the correctness of the form."

The payer reacts to such changes on its side: "You must treat a Form W-8 as invalid when you know or have reason to know of a change in circumstances that affects the correctness of the form."

Payers ask for a new form in another case too: "If the existing form does not support a claim for a reduced rate of withholding or is incomplete with respect to any claim made on the form (such as may result, for example, from a new regulatory requirement relevant to the Form W-8)".

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