Back 
High-volume foreign payments are complex and create significant non-compliance risks for your business. Controllers must diligently manage FATCA and W-8 compliance for payments to foreign payees.
For finance and accounting teams that work with overseas suppliers and partners, one area that causes AP tax compliance issues is the complexity of the W-8 series IRS tax forms and process.
W-8 forms are completed by foreign payees (including suppliers and other payout recipients) to provide their taxpayer identification details, contact information, and certify their status under the Foreign Account Tax Compliance Act (FATCA). By submitting the appropriate W-8 form, the payee confirms their Chapter 4 FATCA classification, which allows the payer to determine whether U.S. tax withholding applies—or whether the payment qualifies for a reduced rate or exemption.
Although our focus for Controllers is on their foreign entity payees receiving FATCA-related U.S. source income, this guide also provides a brief overview of additional FATCA provisions relating to Foreign Financial Institutions (FFIs) that report information to the IRS on U.S. persons’ foreign financial accounts.
Key Takeaways
- The Foreign Account Tax Compliance Act (FACTA) is enforced by the IRS to reduce tax avoidance.
- FATCA covers (1) foreign payees receiving U.S. source income and (2) U.S. persons (U.S. citizens and resident aliens) holding financial accounts with Foreign Financial Institutions (FFIs).
- FATCA requires withholding at a standard rate of 30% unless a foreign payee (with FATCA-related U.S. source income) claims an exemption or a reduced rate under a tax treaty.
- Business FATCA compliance includes collecting completed W-8BEN-E or applicable forms from payees that document foreign status, certify FATCA Chapter 4 status, and claim any tax treaty benefits.
- If payers don’t withhold any required taxes from payments under FATCA, they may be liable to the IRS for amounts that should have been withheld.
- Automated W-8 collection and FATCA status determination reduce noncompliance risk and help prevent IRS penalties and withholding liabilities.
What is FATCA and Why Does It Matter?
Compliance with FATCA is essential for U.S. businesses, foreign payees that are NFFEs, Foreign Financial Institutions (FFIs), and their account holders. The IRS has tax administration responsibilities for FATCA’s implementation.
What is FATCA?
FATCA (Foreign Account Tax Compliance Act) is an ongoing U.S. law enacted in 2010 as part of the HIRE Act, and fully implemented by the IRS in 2014 to crack down on tax evasion. FATCA is codified in Chapter 4 of the Internal Revenue Code. Non-financial businesses must also comply with FATCA. For foreign payees of U.S. businesses, FATCA allows claimed exemptions or reduced withholding rates by requiring the submission (and collection of) W-8 forms.
FATCA applies to two categories, with the first category applying to most businesses with payables that are paid to foreign entities:
- For a Non-Financial Foreign Entity (NFFE), the payee entity must self-declare and certify its FATCA status on W-8 forms, such as W-8-BEN-E, to document and prevent withholding by each payer at a standard 30% tax rate.
- For a Foreign Financial Institution (FFI), FATCA applies to U.S. persons holding a foreign financial account (offshore account). For FATCA compliance, U.S. persons must submit a W-9 form to their FFI to certify non-foreign status, allow the FFI to report their account information to the IRS, or claim an exemption from IRS FATCA reporting requirements for certain entity or trust types.
The Internal Revenue Service (IRS) classifies foreign entities and other non-resident alien (NRA) categories as foreign persons. The IRS includes U.S. citizens, resident aliens, and U.S.-formed organizations, such as corporations, partnerships, and other organizations, in the U.S. persons category.
Why FATCA Matters
FATCA matters to businesses because if they don’t deduct any required tax withholding from payments, they could be liable for paying the IRS the 30% taxes that should have been withheld. Collecting W-8 forms from suppliers or other payees will document the payee’s FATCA status and offer them the ability to claim an exemption through certification on the W-8BEN-E form (or another applicable W-8 series form).
For further guidance, here’s a link to IRS Instructions for Form W-8-BEN-E.
The IRS requires that businesses perform adequate due diligence for the information on collected W-8 forms (and W-9 forms). The companies receive these W-8 or W-9 forms from vendors or other payees. Payers use W-8 and W-9 forms to annually prepare and submit 1099-MISC and 1099-NEC information returns to the IRS and applicable states by IRS deadlines.
The IRS imposes penalties for each information return with inaccurate information or incorrect or missing taxpayer ID numbers (TINs), and for submitting information returns late. The maximum penalty for non-compliance depends on whether your organization is considered a large or small business (based on its most recent 3-year average gross receipts) and the number of 1099 forms it submits. Total penalties can be substantial amounts.
The Role of W8 Forms
W-8 forms are a series of different forms with varied requirements. W-8BEN, W-8BEN-E, W-8EXP, W-8IMY, W-8ECI, and Form 8233 are all used by the IRS to determine the business relationship with these suppliers.
The IRS has created this more complex W-8 form series to address tax loopholes in U.S. source income payments to foreigners and offshore financial accounts. Penalties for non-compliance are a 30% withholding tax on net U.S. source payments. The key to navigating the flurry of new W-8 form requirements is ensuring that the supplier is correctly matched with the form that fits their corporate entity structure.
Simplify FATCA tax compliance and avoid IRS penalties
Tipalti’s AP automation software handles the complexities of W-8 form collection and withholding calculations, and simplifies reporting required for FATCA.
Understanding FATCA Status and Withholding
FATCA status refers to IRC Chapter 4 status for foreign persons, including foreign entities and non-resident alien (NRA) individual payees with U.S.-source income, and for U.S. persons with foreign accounts held by FFIs (Foreign Financial Institutions). Foreign entities and non-resident aliens pay international tax on their non-U.S. source income.
FATCA withholding regulations are described in Internal Revenue Code Chapter 3 for specified entities and non-resident alien individuals. FATCA Chapter 3 is applied based on the specified Chapter 4 FATCA status of entities or individuals.
FATCA withholding is primarily required for Non-Participating FFIs and Passive NFFEs, but not for registered, status reporting FFIs (whose payees comply with FATCA) and for Active NFFEs that are generally exempt from FATCA withholding.
Unless otherwise exempt, FFIs that do not both register and agree to report face a 30% withholding tax on certain U.S.-source payments made to them.
A reporting Foreign Financial Institution may be required to withhold 30% from payments to its foreign payees not comply with FATCA.
Foreign Entities FATCA Status
For IRS-defined foreign person entities, FATCA status is certified via checkboxes on IRS Form W-8BEN-E for selected FATCA classification, primarily as an FFI, an Active NFFE, a Passive NFFE, or other organization type. FATCA status determines whether withholding of income taxes is required at the standard 30% rate, an exemption is claimed, or a tax treaty rate applies.
What is the Difference between an Active vs Passive NFFE?
A 50% threshold percentage of passive income and assets that generate passive income distinguishes an Active vs. Passive NFFE. An Active NFFE (Non-Financial Foreign Entity) is a business that derives less than 50% of its income from passive sources, whereas a Passive NFFE holds assets that generate more than 50% of its income from passive sources, such as dividends, interest, and rent.
An Active NFFE (that is not an FFI), with less than 50% passive gross income or assets that produce passive income, may be able to claim an exemption from FATCA withholding.
A Passive NFFE that is not an FFI indicates and certifies on Form W-8BEN-E whether or not it is controlled by U.S. owners.
Why FATCA Status and NFFE Classification Matter
It’s important for paying businesses to properly identify their Active NFFE payees along with their FATCA status, as reported on a W-8BEN-E form. Your business must ensure that it deducts the required tax withholding from payments to Active NFFEs. Otherwise, your business could incur IRS liabilities to pay any required income taxes not withheld from the payee.
FATCA Reporting on Form 1042-S by Withholding Agents or U.S. Payers
IRS Form 1042-S (see 1042-S instructions) is an information return titled Foreign Person’s U.S. Source Income Subject to Withholding that must be filed by withholding agents or U.S. payers to report payments to foreign persons.
Foreign payments reporting on Form 1042-S includes withholdable payments to foreign persons for U.S.-source FDAP income under FATCA requirements and other foreign payments, even if withholding is not required. Foreign persons include foreign entities (including corporations, partnerships, trusts, and estates) and non-resident alien individuals.
FATCA Reporting for U.S. Persons, as Entities or Individuals
We describe aspects of FATCA reporting, including W-9 reporting by U.S. persons or entities, certification of a FATCA Exemption, and FATCA FFI Reporting Models for foreign financial accounts.
U.S. Persons as U.S. Citizens or Non-Resident Aliens
U.S. persons submit Form W-9 to requesters instead of a W-8 series form. U.S. persons are individual U.S. citizens, resident aliens (non-U.S.-based citizens that are bona fide residents meeting an IRS classification test), and U.S.-based entities.
Resident aliens are non-U.S.-based citizens who are bona fide residents meeting an IRS classification test. The official IRS definition of resident aliens is:
A resident alien is an individual that is not a citizen or national of the United States and who meets either the green card test or the substantial presence test for the calendar year.
However, a non-U.S.citizen or national who is a bona fide resident of a U.S.territory (Puerto Rico, the U.S. Virgin Islands, Guam, CNMI – Mariana Islands, or American Samoa) is treated as a non-resident alien for withholding.
Certifying FATCA Reporting Exemption
Line 4 of the W-9 form provides a space to insert an Exemption from Foreign Account Tax
Compliance Act (FATCA) reporting code (if any) for foreign investment or bank accounts held outside the United States. The W-9 Part II Certification section includes certifying that:
4. The FATCA code(s) entered on this form (if any) indicating that I am exempt from FATCA reporting are correct.
FATCA Reporting Models for Foreign Financial Accounts
Offshore accounts above an IRS reporting threshold held by U.S. persons (or foreign entities with a substantial U. S. ownership interest) in Foreign Financial Institutions (FFIs) must be reported to the IRS through either the IGA Model 1 or the IGA Model 2. IGA stands for intergovernmental agreements between specific countries and the United States government.
FATCA Challenges for the Controller
Managing FATCA compliance creates several operational and tax risks for finance teams:
1) Determining the Correct W-8 Forms
Companies often push responsibility onto suppliers to determine the right forms. But when a supplier is located in another country, deciding which forms are required can be challenging.
This frequently turns into an ad hoc back-and-forth between the supplier and accounts payable, adding significant drag to onboarding and sometimes even involving tax lawyers.
2) Year-End Scramble to Collect Forms
Many companies don’t collect W-8 forms until year-end. That means going back to dozens, or hundreds, of suppliers during the 1099 and 1042-S crunch. Finance teams are left managing a flood of emails or faxes from around the world. In some cases, the company no longer works with the partner but must still request tax documentation, which can be awkward, slow, and difficult.
3) Withholding Obligations and Treaty Complexity
In certain situations, the payor must withhold a portion of the payment from foreign payees — similar to employee withholding. Whether withholding applies depends on:
- The supplier’s country
- Whether the U.S. has a tax treaty with that country
- The applicable treaty withholding rate
One-off withholding situations can quickly become a bookkeeping nightmare and test your knowledge of international tax law.
4) Manual Processes at Scale
If you have one or two foreign suppliers, this may not be a hardship. But when managing hundreds or thousands of cross-border payees, the process is often highly manual, time-consuming, and error-prone.
Compliance Checklist and Best Practices for FATCA Compliance
Controllers and their accounting staff (including accounts payable) should consider the following steps to achieve FATCA compliance and reduce the risk of IRS penalties or needing to pay the IRS for missed withholding on international payments to your foreign payees.
- Familiarize yourself with FATCA regulations that affect your business.
- Read relevant IRS Instructions and guides to improve FATCA compliance.
- Collect the applicable W-8 forms from your foreign-person suppliers and payees receiving payouts before making their first payment.
- Know your customers.
- Perform due diligence on W-8 tax forms (and any W-9 forms) received from payees.
- Do TIN matching on taxpayer ID and name combinations to help ensure accuracy in 1099 and 1042-S reporting, and validate payees to reduce fraudulent payments risk.
- Consult your company’s tax attorney or CPA for further guidance on FATCA compliance.
- Automate tax compliance, including FATCA, with Tipalti Accounts Payable and/or Tipalti Mass Payments for global payouts that integrate with your ERP system.
On IRS.gov, the IRS’s authoritative, in-depth material on FATCA includes the IRS-codified Act’s Chapters 3 and 4, as well as specific IRS tax forms, such as W-8BEN-E and 1042-S. This guide contains several links to that IRS material.
Besides efficiently performing invoicing processing and payments, Tipalti’s AP Automation or Mass Payments software for payouts automates tax and global regulatory compliance, including:
- Enabling payees to use the right W-8 series form
- TIN matching against the IRS database
- Blacklist screening for sanctions
- KYC (Know Your Customer)
- AML (anti-money laundering)
- International banking laws by country for cross-border payments.
Supporting FATCA Compliance with Automation
As foreign payment volumes grow, managing FATCA and W-8 compliance through manual processes becomes increasingly difficult. Controllers must ensure proper form collection, validation, withholding determinations, and year-end reporting, all while minimizing operational drag and compliance risk.
Modern AP and global payments platforms help streamline this process by embedding tax documentation directly into the payee onboarding process. Instead of chasing W-8 or W-9 forms during the 1099 and 1042-S season, required documentation can be collected and validated before the first payment is issued.
Automation can also support:
- Determining the correct W-8 or W-9 form
- Validating tax identification information
- Recognizing treaty-based withholding reductions or exemptions
- Calculating required withholding at the time of payment
- Centralizing data for year-end information reporting
By shifting compliance upstream, at onboarding and payment execution, finance teams reduce manual follow-up, avoid year-end scrambles, and lower exposure to IRS penalties.
Tipalti Automated Tax Compliance
Tipalti embeds tax compliance directly into both its Accounts Payable and Mass Payments workflows. During onboarding, payees can digitally submit W-8 or W-9 forms, with built-in validation to help ensure completeness and accuracy before payments are processed.
Tipalti also supports FATCA withholding determinations, including treaty rate reductions and certified exemptions, and can automatically calculate and apply withholding when required.
Tipalti centralizes payee payment data throughout the year and integrates with Zenwork’s Tax1099 e-filing solution to streamline 1099 and 1042-S preparation and submission to the IRS and applicable states.
By combining onboarding controls, withholding management, and reporting support in a single platform, Tipalti helps finance teams strengthen compliance while reducing operational burden.
Building Scalable FATCA Compliance
FATCA compliance isn’t just a tax issue; it’s an operational discipline. As cross-border payments increase, finance teams need structured processes that ensure documentation, withholding accuracy, and reporting consistency from day one.
Controllers who modernize these workflows reduce exposure to penalties, eliminate year-end fire drills, and create scalable compliance infrastructure that supports global growth.
Learn how Tipalti’s automated tax compliance capabilities support global payables and cross-border FATCA requirements.
FATCA FAQs
What is the purpose of the Foreign Account Tax Compliance Act (FATCA)?
The purpose of FATCA is to reduce tax avoidance by U.S. taxpayers and to withhold, or provide an exemption from, the potential 30% withholding tax on payments to foreign payees for U.S.-source income.
How do W-8 forms relate to FATCA compliance?
W-8 forms are used to certify foreign status and determine whether FATCA requires 30% tax withholding. W-8s determine if the entity or individual is exempt from withholding through their FATCA Chapter 4 status or subject to a lower tax rate through a tax treaty.
What is the impact of FATCA on payments to foreign entities?
Under FATCA, payments to foreign entities (NFFEs or FFIs) on certain U.S.-source income categories, including royalties, may be subject to 30% withholding unless they are exempt or receive a reduced rate under a tax treaty, as reported on a W-8 form such as W-8BEN-E.
What does Chapter 4 Status (FATCA status) mean?
Chapter 4 status (FATCA status) means that a foreign entity payee may be subject to Chapter 4 withholding from payments at 30% unless it provides certification about its entity status that provides an exemption or reduced tax rate through a U.S. tax treaty.
How to determine FATCA status for a Canadian corporation?
Determine FATCA status for a Canadian corporation by determining if it is an FFI (Foreign Financial Institution), an Active NFFE (Non-Financial Foreign Entity), or a Passive NFFE, using Form W-8BEN-E to indicate Chapter 4 status.
What are the withholding requirements under FATCA?
Under FATCA, payers must withhold 30% from foreign payees for certain types of FATCA-specified U.S. source income unless a certified and reported W-8 form exemption or reduced tax treaty rate applies.
FATCA and U.S. Persons Foreign Financial Account Reporting
What is an IGA for FATCA?
IGA FACTA is an intergovernmental agreement between the U.S. and a foreign country for FFI reporting of amounts over a threshold held by U.S. account holders in foreign financial accounts to the IRS. In Model 1 IGA, countries report information for all FFIs in their jurisdiction to the IRS. Countries in Model 2 IGA enable all FFIs in their jurisdiction to directly report relevant customers’ account information to the IRS.
Does a U.S. financial institution with foreign branches have FATCA registration and reporting responsibilities?
Although a U.S. Financial Institution (USFI) with owned foreign branches generally doesn’t have FATCA registration and reporting responsibilities, there are exceptions relating to:
- Having foreign branches of USFIs with Qualified Intermediary (QI) status
- Choosing to be a Lead FI and/or Sponsoring Entity
- Having a reporting Model 1 FFI foreign branch.
What are the similarities and differences between FATCA Form 8938 vs. FBAR?
IRS Form 8938 for FATCA compliance, and FBAR (FinCEN Form 114) apply to certain U.S. persons holding foreign financial accounts above a specified threshold.
Domestic entities, including specified corporations, partnerships, and trusts, U.S. citizens, resident aliens, and certain non-resident aliens, file Form 8938 for FATCA with their income tax return submitted to the IRS; U.S. persons file FinCEN Form 114 (FBAR) with the Financial Crimes Enforcement Network, a bureau of the U.S. Department of the Treasury.
IRS Form 8938 is the Statement of Specified Foreign Financial Assets. FinCEN Form 114 is the Report of Foreign Bank and Financial Accounts (FBAR).
