SERIES 65 | FINANCIAL REGULATION COURSES
The W-8 and W-9 forms are the two foundational IRS tax certification documents that broker-dealers, investment advisers, and other financial institutions collect from clients at account opening to determine the client's tax status — whether they are a United States person subject to domestic tax reporting and potential backup withholding, or a foreign person subject to the nonresident alien withholding regime — and to establish the correct withholding rate on investment income generated within the account.
Form W-9 — the Request for Taxpayer Identification Number and Certification — is completed by United States persons to certify their taxpayer identification number, confirm their status as a United States person, and claim exemption from backup withholding when applicable.
Form W-8 — a family of related certificates of foreign status, the most commonly encountered of which in the securities industry is Form W-8BEN — is completed by foreign persons to establish their status as non-United States persons, identify the applicable withholding rate on United States source income, and claim any reduced withholding rate available under an applicable income tax treaty between the United States and the foreign person's country of residence.
The W-8 and W-9 forms are directly tested on the Series 65 examination in the context of account opening procedures, tax withholding obligations, the PATRIOT Act customer identification programme, and the Know Your Customer framework applicable to investment advisers and broker-dealers.
The Fundamental Distinction — US Person Versus Foreign Person
The entire W-8 and W-9 framework rests on a single foundational distinction — whether the account holder is a United States person or a foreign person for federal income tax purposes — because this classification determines the entire tax reporting and withholding regime applicable to investment income generated in the account.
A United States person for federal income tax purposes includes United States citizens — regardless of where they reside in the world — resident aliens who meet the green card test or the substantial presence test — domestic corporations and partnerships, any estate other than a foreign estate, and any trust over whose administration a court within the United States can exercise primary supervision and whose substantial decisions one or more United States persons have the authority to control — and other persons who meet the definition of United States person under IRC Section 7701(a)(30).
A United States citizen living permanently in France remains a United States person for tax purposes and must complete a Form W-9 rather than a Form W-8 for any United States financial account.
A foreign person is any individual, corporation, partnership, trust, or estate that does not meet the definition of a United States person — nonresident alien individuals who do not meet the green card test or substantial presence test, foreign corporations organised under the laws of a country other than the United States, foreign partnerships, foreign trusts, and foreign estates.
A Canadian citizen living in Canada who opens a brokerage account at a United States broker-dealer is a foreign person who must complete a Form W-8BEN.
This classification is not always immediately apparent from the account holder's name or address — a person with a United States address may be a nonresident alien on a temporary visa, and a person with a foreign address may be a United States citizen.
The W-8 and W-9 certification process requires each account holder to affirmatively certify their tax status under penalties of perjury, creating legal accountability for accurate self-classification.
Resident Alien Status — The Green Card and Substantial Presence Tests
An individual who is not a United States citizen is a resident alien for a calendar year — and so completes Form W-9 rather than Form W-8BEN — if he or she meets either the green card test or the substantial presence test for that year. The green card test turns on legal status rather than on physical presence: an individual who was a lawful permanent resident of the United States at any time during the calendar year is a resident alien for that year, so that a green card holder who spends most of the year abroad does not thereby become a nonresident alien.
The substantial presence test turns on days of physical presence measured across three years. The individual must be physically present in the United States on at least thirty-one days during the current calendar year, and on at least one hundred and eighty-three days during the current year and the two preceding years — counting every day of presence in the current year, but only one third of the days of presence in the first preceding year and only one sixth of the days in the second preceding year. An individual present for one hundred and twenty days in each of three consecutive years therefore counts one hundred and twenty days, plus forty, plus twenty — one hundred and eighty in all — and does not meet the test for the third year, despite three hundred and sixty actual days of presence across the period.
In most cases the days an individual spends in the United States as a teacher, student or trainee on an F, J, M or Q visa are not counted toward the substantial presence test, an exception that applies for a limited period of time. A foreign student on an F visa may therefore live in the United States for most of the year and remain a nonresident alien who properly completes Form W-8BEN — the length of the stay alone does not decide the form.
Form W-9 — The US Person Certification
Form W-9 — titled Request for Taxpayer Identification Number and Certification — is the document that United States persons complete and provide to financial institutions to certify four things under penalties of perjury — that their taxpayer identification number is correct, that they are not subject to backup withholding, that they are a United States person, and that any FATCA exemption code they enter is correct.
The taxpayer identification number certified on Form W-9 is the Social Security number for an individual United States person — or, for a resident alien who does not have and is not eligible to get a Social Security number, the IRS individual taxpayer identification number — or the employer identification number for United States business entities — corporations, partnerships, and limited liability companies taxed as corporations or partnerships. The TIN is the foundational number connecting the account to the IRS reporting system — all Form 1099 information returns reporting investment income paid to the account are filed using this number, ensuring that the IRS can match income reported by the payer with income reported by the recipient on their individual or entity tax return.
The certification of United States person status on Form W-9 establishes that the domestic information reporting regime — Form 1099 reporting — applies to the account rather than the nonresident alien withholding regime. A broker-dealer that receives a completed Form W-9 from an account holder treats all investment income paid to that account as subject to Form 1099 reporting — reporting dividends on Form 1099-DIV, interest on Form 1099-INT, and proceeds from securities sales on Form 1099-B — but does not withhold tax on investment income paid unless backup withholding is required.
Backup withholding is triggered under IRC Section 3406 when an account holder has failed to furnish a TIN, when the IRS has notified the payer that the TIN furnished is incorrect, when the IRS has notified the payer that the account holder has underreported interest or dividend income, or when the account holder has failed to certify that they are not subject to backup withholding — the last two triggers applying only to interest and dividend payments. The current backup withholding rate is twenty-four percent of investment income — applied to dividends, interest, and certain other payments when backup withholding conditions are met. A Form W-9 that includes the account holder's correct TIN and the certification that they are not subject to backup withholding prevents backup withholding on that account unless the IRS later notifies the payer that the TIN is incorrect or that the account holder has underreported interest or dividend income.
The Form W-9 is not submitted to the IRS — it is retained by the financial institution as documentation supporting its tax reporting decisions. The financial institution uses the certified information to file Form 1099 information returns with the IRS and to furnish statements to the account holder early in the following year — by January 31 for most Forms 1099, and by February 15 for Form 1099-B and for statements furnished as part of a broker's consolidated reporting statement — for use in preparing their personal tax return.
The Awaiting-TIN Certificate
A United States person who has applied for a taxpayer identification number but has not yet received one is not left without a Form W-9. For interest and dividend payments and certain payments with respect to readily tradable instruments, the account holder may return a properly completed and signed Form W-9 with the words Applied For written in place of the number — an awaiting-TIN certificate — and then has sixty calendar days from the date the payer receives the certificate to provide the number. If the payer has not received the number by the end of that period, it must begin backup withholding.
The sixty days are not free of obligations for the payer. Under the reserve rule it must backup withhold on reportable payments made during the period if the account holder withdraws more than five hundred dollars at one time, unless the account holder reserves an amount equal to the current backup withholding rate on all reportable payments made to the account. Alternatively the payer may elect, after a seven-day grace period, either to backup withhold on reportable payments when the account holder makes a withdrawal after the close of seven business days following receipt of the certificate, or to backup withhold on all reportable payments made to the account, whether or not anything is withdrawn, beginning no later than seven business days after receipt.
The sixty-day relief reaches only interest, dividends and certain payments relating to readily tradable instruments. Any other reportable payment — nonemployee compensation, for example — is subject to backup withholding immediately, even while the payee has applied for and is awaiting a number, so that an awaiting-TIN certificate protects an investment account's interest and dividends but does not protect a fee paid to the same person for services.
Form W-8BEN — The Foreign Individual Certification
Form W-8BEN — Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting — is the most commonly encountered member of the W-8 family of forms in the retail brokerage context, completed by foreign individuals who are the beneficial owners of investment income paid by United States sources. Form W-8BEN establishes that the account holder is a foreign person subject to the nonresident alien withholding regime rather than the domestic Form 1099 reporting regime.
A foreign individual who completes Form W-8BEN certifies their foreign status — that they are not a United States citizen and not a resident alien — and provides their country of residence, their foreign taxpayer identification number if applicable, and their date of birth. The form also allows the foreign individual to claim treaty benefits — a reduced withholding rate on certain categories of income under an applicable income tax treaty between the United States and their country of residence.
Without a treaty claim, the standard withholding rate on United States source investment income paid to nonresident alien individuals is thirty percent. This thirty percent withholding rate applies to dividends paid by domestic corporations, interest income — except interest that qualifies for the portfolio interest exemption under IRC Section 871(h) for individuals and Section 881(c) for foreign corporations — royalties, and other fixed or determinable annual or periodical income from United States sources. The United States withholds thirty percent of each dividend payment and each interest payment at the source — the paying broker-dealer deducts thirty percent before crediting the net amount to the foreign account holder.
Many income tax treaties between the United States and foreign countries reduce the withholding rate on dividends and interest below the standard thirty percent for residents of the treaty country. For example the United States-United Kingdom income tax treaty reduces the withholding rate on ordinary dividends to fifteen percent and eliminates withholding on portfolio interest entirely for qualifying United Kingdom residents. The United States-Canada income tax treaty similarly reduces dividend withholding to fifteen percent and eliminates most interest withholding. A foreign individual who completes Form W-8BEN and claims a reduced treaty rate — certifying residence in the treaty country and, where the treaty conditions the reduction on more than residence, identifying the specific treaty article and paragraph authorising it — allows the broker-dealer to apply the reduced rate rather than the standard thirty percent.
Form W-8BEN generally remains in effect from the date it is signed until the last day of the third succeeding calendar year — a form signed in 2024 remains valid through December 31, 2027 unless a change in circumstances makes information on the form incorrect, such as, for an account holder claiming treaty benefits, a move out of the treaty country or to the United States.
Treaty Claims and Changes in Circumstances on Form W-8BEN
A treaty claim on Form W-8BEN identifies the country of which the beneficial owner claims to be a resident for income tax treaty purposes, and a person is a resident of a treaty country for this purpose only if he or she is a resident of that country under the terms of the treaty itself. A treaty claim generally requires a taxpayer identification number — either a United States number such as an individual taxpayer identification number, or a foreign tax identifying number issued by the claimant's jurisdiction of tax residence — but no individual taxpayer identification number is required to claim treaty benefits on dividends and interest from stocks and debt obligations that are actively traded, on dividends from a redeemable security issued by a registered investment company, or on income from loans of such securities.
If a change in circumstances makes any information on the form incorrect, the account holder must notify the withholding agent within thirty days and provide a new Form W-8BEN or other appropriate form. Which moves count depends on what the form is being used for. For an account holder who uses it only to certify foreign status, a change of address to an address in the United States is a change in circumstances, while a move within the same foreign country or to another foreign country generally is not; for an account holder who claims treaty benefits, a move to the United States or out of the country whose treaty is being claimed is a change in circumstances.
Becoming a United States person ends the form's role altogether. An account holder who becomes a United States citizen or resident alien after submitting Form W-8BEN — including by meeting the substantial presence test — is no longer subject to thirty percent withholding under section 1441, must notify the withholding agent within thirty days, and may be required to provide Form W-9 in its place.
The Portfolio Interest Exemption
Interest, including original issue discount, that qualifies as portfolio interest is exempt from the thirty percent chapter 3 withholding that would otherwise apply to United States source interest paid to a foreign person. For obligations issued after March 18, 2012, portfolio interest generally includes only interest on an obligation in registered form and the withholding agent must have received documentation that the beneficial owner of the obligation is not a United States person, which for a foreign individual is ordinarily Form W-8BEN.
The exemption is denied to insiders and to lenders in the ordinary sense. Interest paid to a foreign person that owns ten percent or more of the total combined voting power of all classes of stock of the issuing corporation — or ten percent or more of the capital or profits interest in an issuing partnership — is not portfolio interest. Nor, except in the case of interest on an obligation of the United States, is interest paid to a bank on an extension of credit made under a loan agreement entered into in the ordinary course of its banking business, and nor is interest paid to a controlled foreign corporation by a related person.
Qualifying under chapter 3 does not settle the position under chapter 4. Portfolio interest is not exempt from FATCA withholding when the interest is a withholdable payment, unless an exception from chapter 4 withholding applies — so a payment that escapes the nonresident tax as portfolio interest can still be withheld on at thirty percent where the payee is, for example, a nonparticipating foreign financial institution.
Sale Proceeds and Capital Gains of Foreign Account Holders
The thirty percent nonresident withholding regime is aimed at fixed or determinable annual or periodical income — dividends, interest, royalties and similar items — and not at gains. A withholding agent generally does not need to withhold under chapter 3 or chapter 4 on gain from the sale of real or personal property, because such gain is not fixed or determinable annual or periodical income; dispositions of United States real property interests are governed by a separate withholding regime. A foreign individual who sells shares of a United States corporation at a profit through a United States broker-dealer is therefore generally not withheld on at thirty percent on the sale, although the dividends those shares paid while held were subject to it.
The principal exception for individuals turns on presence. A nonresident alien individual who is present in the United States for a period or periods aggregating one hundred and eighty-three days or more during the taxable year is taxed at thirty percent on the amount by which his or her United States source gains from sales or exchanges of capital assets during that year exceed the United States source losses from such sales — a tax on the year's net gain, not on the gross proceeds of each sale.
Distributions from mutual funds are not all treated alike. Certain interest-related dividends and short-term capital gain dividends paid by a mutual fund or other regulated investment company are exempt from chapter 3 withholding, so that a distribution labelled a dividend on a foreign account holder's statement is not necessarily one on which the broker-dealer must withhold at the dividend rate.
The W-8 Form Family — Beyond W-8BEN
While Form W-8BEN is the most commonly encountered W-8 form in retail brokerage account opening, the IRS has developed a family of related W-8 forms for different categories of foreign persons and circumstances.
Form W-8BEN-E — Certificate of Status of Beneficial Owner for United States Tax Withholding and Reporting — is the entity equivalent of Form W-8BEN, completed by foreign corporations and other foreign entities that are the beneficial owners of United States source income — a foreign partnership is generally not the beneficial owner of income paid to it and documents itself instead on Form W-8IMY. The W-8BEN-E is substantially more complex than the individual W-8BEN — it requires the entity to identify both its entity classification under United States tax principles and its chapter four status under the Foreign Account Tax Compliance Act framework, and in many cases to provide additional certifications about its ownership structure and the nature of its income.
Form W-8ECI — Certificate of Foreign Person's Claim That Income Is Effectively Connected With the Conduct of a Trade or Business in the United States — is completed by foreign persons who receive income that is effectively connected with a United States trade or business. Income that is effectively connected with a United States trade or business is not subject to the thirty percent flat withholding rate but is instead taxed at the same graduated rates applicable to United States persons — making the ECI regime more analogous to the domestic tax system than the nonresident alien withholding regime.
Form W-8EXP — Certificate of Foreign Government or Other Foreign Organization — is completed by foreign governments, international organisations, foreign central banks of issue, and certain other foreign tax-exempt entities claiming exemption from United States withholding.
Form W-8IMY — Certificate of Foreign Intermediary, Foreign Flow-Through Entity, or Certain United States Branches — is completed by foreign financial institutions, foreign partnerships, and similar intermediaries who receive payments on behalf of other persons rather than as the beneficial owner. The W-8IMY is associated with withholding statements identifying the underlying beneficial owners and their applicable withholding rates.
FATCA and the Enhanced Foreign Account Reporting Obligation
The Foreign Account Tax Compliance Act — FATCA — enacted as part of the Hiring Incentives to Restore Employment Act of 2010 and applying under the statute to payments made after December 31, 2012, although Treasury regulations postponed the start of FATCA withholding to July 1, 2014 — added a comprehensive new layer of foreign account reporting requirements that significantly expanded the information collected on W-8 forms and created new obligations for foreign financial institutions holding accounts of United States persons.
FATCA requires foreign financial institutions — banks, broker-dealers, investment funds, and other financial institutions outside the United States — to identify accounts held by United States persons and report those accounts to the IRS either directly or through the tax authority of their home country under an intergovernmental agreement. Foreign financial institutions that fail to comply with FATCA are subject to a thirty percent withholding tax on certain United States source payments — a punishing rate designed to create a strong incentive for compliance with the reporting regime.
The current versions of the W-8 forms incorporate FATCA compliance certifications — foreign entities completing Form W-8BEN-E must identify their chapter four status under FATCA including their Global Intermediary Identification Number if they are a participating foreign financial institution. The FATCA framework has made the W-8 form completion process substantially more complex for institutional foreign account holders than the simpler individual W-8BEN completed by retail foreign investors.
For United States financial institutions including broker-dealers, FATCA requires due diligence procedures to identify whether account holders are United States persons — a United States withholding agent making a withholdable payment to a non-financial foreign entity must withhold thirty percent unless the entity certifies that it has no substantial United States owners or provides the name, address and TIN of each one, which the withholding agent then reports to the IRS.
The Account Opening Context — How W-8 and W-9 Fit the Regulatory Framework
The collection of W-8 or W-9 forms at account opening is one component of the comprehensive account opening regulatory framework that also includes the PATRIOT Act customer identification programme requirements and the Know Your Customer obligation of FINRA Rule 2090 and the customer account information requirements of FINRA Rule 4512 and the Investment Advisers Act fiduciary framework.
The CIP requirements of the PATRIOT Act — discussed in the USA PATRIOT Act entry of this dictionary — require a broker-dealer to obtain the customer's name, date of birth for an individual, address, and identification number before opening the account, and to verify the customer's identity within a reasonable time before or after the account is opened. The taxpayer identification number collected under the CIP is the same number that appears on the W-9 for United States persons — for a non-United States person, the CIP accepts one or more of a taxpayer identification number, a passport number and country of issuance, an alien identification card number, or the number and country of issuance of another government-issued photo identification document — any of which may differ from the foreign taxpayer identification number appearing on the W-8BEN.
The Form W-9 certification of the taxpayer identification number under penalties of perjury provides the financial institution with a legal basis for relying on the account holder's self-certification of their TIN without independently verifying it through IRS records. If the Form W-9 TIN proves incorrect — because the account holder certified an incorrect number — the IRS will notify the financial institution through a CP2100 or CP2100A notice, the institution must send the account holder a B notice, and backup withholding must begin unless the account holder returns a newly certified Form W-9 — or, after a second such IRS notice within three calendar years, a validation of the number from the Social Security Administration or the IRS.
The Form W-8 certification establishes the account holder's foreign status and applicable withholding rate — allowing the financial institution to apply the correct withholding treatment to investment income without waiting for IRS guidance on each individual payment. Financial institutions that fail to obtain completed W-8 forms from foreign account holders cannot apply a treaty-reduced rate or the portfolio interest exemption, both of which require documentation, and must withhold at the unreduced rate that the presumption rules dictate, generally thirty percent for a payee treated as foreign — a rate that may significantly exceed the treaty-reduced rate the foreign account holder is entitled to claim.
B Notices — The First and the Second
When the IRS finds that information returns a payer has filed show a missing or incorrect name and taxpayer identification number combination, it sends the payer a CP2100 or CP2100A notice listing the accounts concerned. The payer then has fifteen business days from the date of the notice, or from the date it received the notice if later, to send the account holder a B notice. After the first CP2100 or CP2100A notice for an account, the payer sends the First B Notice together with a Form W-9, and the account holder cures the problem by returning a newly signed Form W-9.
If a second CP2100 or CP2100A notice for the same account arrives within three calendar years, the payer sends the Second B Notice instead, and encloses no Form W-9 — because a further self-certification is no longer enough. The Second B Notice tells the account holder to contact the Social Security Administration or the IRS, and the payer must receive validation of the account holder's name and number from one of them. Generally a payer does not have to send a B notice more than twice within three calendar years to the same account, and it may disregard a second CP2100 or CP2100A notice received in the same calendar year as the first.
Either way the clock runs from the payer's receipt of the IRS notice. The payer must begin backup withholding on all reportable payments to the account holder no later than thirty business days after it receives the CP2100 or CP2100A notice, and must stop within thirty calendar days after it receives the required certification on Form W-9 — or, following a second notice, the validation from the Social Security Administration or the IRS. At its option the payer may start and stop backup withholding at any time within those thirty-day periods.
The Broker-Dealer's Withholding Agent Obligation
A broker-dealer that pays United States source investment income to account holders — dividends on securities held in custody, interest on bonds, and proceeds subject to withholding — is classified as a withholding agent under the Internal Revenue Code, responsible for deducting and remitting the appropriate amount of withholding tax to the IRS on behalf of foreign account holders.
The withholding agent obligation is one of the most significant tax compliance responsibilities of any broker-dealer maintaining custodial accounts. The broker-dealer must determine the correct withholding rate for each payment based on the W-8 documentation in the account — applying thirty percent to a foreign payee without a valid treaty claim on valid W-8 documentation, and the applicable treaty rate for accounts with valid treaty certifications. The withheld amounts must be deposited with the IRS through the Electronic Federal Tax Payment System on a schedule determined by the total amount of tax withheld, and annual information returns on Form 1042-S must be filed reporting each payment to each foreign account holder and the withholding applied.
Errors in withholding — under-withholding particularly — expose the broker-dealer to personal liability for the under-withheld amounts plus interest and penalties, creating powerful incentives for careful documentation collection and withholding rate determination. An investment adviser who also has withholding agent status for client accounts must have adequate procedures for collecting and maintaining W-8 and W-9 documentation and for applying the correct withholding treatment to each payment.
When Documentation Is Missing — The Presumption Rules and Joint Accounts
A withholding agent that cannot reliably associate a payment with valid documentation does not choose a rate at its own discretion; it applies presumption rules that fix the payee's status, and a withholding agent that complies with them is not liable for tax, interest and penalties even where the rate that should have applied on the payee's actual status is different. The starting presumption is that a payment the withholding agent cannot reliably associate with documentation is made to a United States person — so that an undocumented individual's dividends and interest generally fall under the domestic regime and its backup withholding rather than under nonresident withholding. Particular facts displace that presumption for particular payees; a payment made outside the United States with respect to an offshore obligation, for example, is presumed made to a foreign payee unless the withholding agent actually knows that the payee is a United States person.
Actual knowledge works in one direction only. A withholding agent that relies on its own knowledge of a payee's status to withhold less than the presumption rules require may be liable for tax, interest and penalties, but it should rely on that knowledge where doing so results in withholding more than the presumptions would produce.
An account owned jointly is treated as owned by a foreign beneficial owner only if every owner provides Form W-8BEN or Form W-8BEN-E. If the withholding agent receives Form W-9 from any one of the joint owners, the payment must be treated as made to a United States person and the account treated as a United States account; and where no joint owner has provided documentation and all appear to be individuals, the payment is presumed made to an unidentified United States person and backup withholding applies.
Examination Relevance and Key Takeaways
The W-8 and W-9 forms are tested on the Series 65 examination in the context of account opening procedures, tax withholding, the distinction between United States persons and foreign persons, and the broker-dealer's withholding agent obligations.
The key points to retain are these.
Form W-9 — Request for Taxpayer Identification Number and Certification — is completed by United States persons — citizens and resident aliens — to certify their Social Security number, individual taxpayer identification number or employer identification number, confirm their United States person status, and claim exemption from backup withholding. The W-9 establishes the domestic Form 1099 reporting regime — the financial institution reports investment income to the IRS and the account holder on Form 1099 without withholding tax unless backup withholding at twenty-four percent applies due to missing or incorrect TIN or IRS notification.
Form W-8BEN — Certificate of Foreign Status of Beneficial Owner — is completed by foreign individuals to establish their nonresident alien status and claim any applicable treaty-reduced withholding rate. Without a treaty claim the standard withholding rate on United States source investment income paid to foreign persons is thirty percent — applied to dividends, interest, royalties, and other fixed or determinable periodical income from United States sources at the source before the net amount is credited to the foreign account holder. Treaty claims on Form W-8BEN reduce the withholding rate — commonly to fifteen percent for dividends and zero percent for portfolio interest for residents of treaty countries such as the United Kingdom and Canada. Form W-8BEN generally remains in effect until the last day of the third calendar year after the year in which it is signed.
The W-8 form family includes W-8BEN for foreign individuals, W-8BEN-E for foreign entities, W-8ECI for income effectively connected with a United States trade or business, W-8EXP for foreign governments and exempt organisations, and W-8IMY for foreign intermediaries. FATCA — enacted 2010, with withholding starting on July 1, 2014 — added comprehensive foreign account reporting requirements to the W-8 framework requiring foreign financial institutions to identify and report United States person accounts or face thirty percent FATCA withholding. The broker-dealer's withholding agent obligation requires correct W-8 documentation collection to determine the applicable withholding rate — a foreign account holder without valid W-8 documentation cannot receive a treaty-reduced rate — and annual Form 1042-S information returns reporting each payment to each foreign account holder.


