How to File Form 8802: Eligibility, User Fee, and Processing

To file Form 8802, the Application for U.S. Residency Certification, confirm you qualify as a US tax resident and are current on your federal filings, complete the form using the exact name and taxpayer identification number from your most recent return, pay the user fee through Pay.gov, and mail or fax the signed application to the IRS office in Philadelphia at least 45 days before you need the resulting Form 6166. The IRS will not accept a request for a given calendar year before December 1 of the prior year.¹

Form 6166 is a letter on Department of Treasury stationery that a foreign government or foreign payer will accept as proof you are a US resident for purposes of a US income tax treaty. Without it, the foreign country typically withholds at its full domestic rate. One limit worth knowing before you start: Form 6166 proves treaty residency only. It is not evidence you paid US taxes for a foreign tax credit claim.²

Confirm You Qualify Before You File

The IRS issues Form 6166 only to individuals and entities that are US residents under US income tax law, and only when you are current with your federal tax filings. If the return covering the year you want certified has not been filed, the application will be rejected.³

Individual applicants are US citizens and resident aliens. If you qualify as a resident alien through the substantial presence test and haven’t yet filed a return for the certification year, attach a copy of your current Form I-94 and note the date your residency status changed.⁴

Eligible entities include corporations, partnerships, S corporations, trusts and estates taxed as US entities, tax-exempt organizations, employee benefit plans, disregarded entities whose single owner is a US person, and nominees acting as agents for other US taxpayers. If you need certification for a year whose return isn’t yet due, you must have filed the return for the most recent year that was due. If you have no filing obligation, you’ll need to supply alternative documentation of your US residency.⁵

Nonresident aliens cannot apply. Neither can nonresident single-member LLCs, foreign entities (even if owned by US taxpayers), or US-formed pass-through entities where none of the owners are US residents.⁴ And Form 6166 only helps where a US income tax treaty exists with the country in question. If there is no treaty, the letter will not unlock reduced withholding.

Pass-through applicants get extra scrutiny. For a partnership, S corporation, grantor trust, or other fiscally transparent entity, the IRS verifies the tax status of every partner, member, or beneficiary who has consented to the request, and the resulting Form 6166 certifies both that the entity filed its information return and that the listed owners filed as US residents. Gather each consenting owner’s name, TIN, and residency confirmation before you draft the form. The user fee is a single $185 per Form 8802 regardless of how many owners the IRS ends up checking.⁶

Complete the Form

Accuracy on identifying details matters more than it looks like it should. The IRS matches every entry against its master file, and small mismatches between the application and your most recent return will hold up the process.

Applicant Name, TIN, and Address

Line 1 takes your full legal name and TIN exactly as they appear on your most recent Form 1040, 1120, 1065, or other return. Nicknames, a post-marriage name that hasn’t been updated with the IRS, or a business name that has since changed will not match. If your entity’s legal name has changed since its last filing, attach documentation of the change.⁴

Line 2 is your physical address. Line 3a is the mailing address where the IRS will send Form 6166, and it can differ from Line 2, so make sure it is a location where you reliably receive mail. If a representative should receive correspondence and the certificate, put their information on Line 3b and attach the appropriate authorization (see below).

Entity Type

On Line 4, check the box that matches how you file your federal return, not how you’re organized under state law. An LLC taxed as a partnership checks the partnership box; an LLC taxed as a corporation checks the corporation box.⁴

Countries, Tax Years, and Treaty Articles

List each foreign country where you’ll claim treaty benefits, each tax year you need certified, and the specific treaty article that covers your income. A single Form 8802 can list multiple countries and multiple years, so bundle everything you know you’ll need into one application and pay one user fee.² If you’re unsure which article applies to your income, the IRS treaty tables cross-reference each country’s treaty against dividends, interest, royalties, pensions, and other categories.⁷

Third-Party Representatives

If someone else is filing for you, attach an authorization. Full representation authority requires Form 2848. If you only want the IRS to share information with the third party, use Form 8821. Without one of these on file, the IRS will not communicate with the representative or send them the finished certification.⁴

Perjury Statement and Signature

Line 10 requires a penalties of perjury statement, and the exact wording depends on the applicant type. The instructions include a table (Table 2) with the required language for individuals, partnerships, corporations, trusts, resident aliens, nominees, and applicants claiming teaching or research benefits. Using the wrong template or omitting the statement is one of the more common reasons a form gets returned.

Sign and date the form. For an individual (or both spouses on a joint return), that’s you. For a corporation or S corporation, an authorized officer signs. For a partnership, a general partner or partnership representative signs. For a trust or estate, the fiduciary signs. If a minor can’t sign, a parent signs the child’s name and adds “By [parent’s signature], parent for minor child.”⁴ An unsigned or undated form is treated as incomplete and will not be processed.

Pay the User Fee

The user fee is nonrefundable, and the IRS won’t begin processing until it is paid. It’s charged per Form 8802, not per country or year, so requesting five countries on one application costs the same as requesting one.

Individuals: $85 per Form 8802
All other applicants (corporations, partnerships, trusts, exempt organizations, and others): $185 per Form 8802
Custodial accounts: the custodian pays $85 or $185 per account holder TIN, depending on whether the account holder is an individual or an entity⁶

Pay electronically through Pay.gov. Search “IRS Certs” on the site, enter your name, TIN, contact information, and the number of Forms 8802 you’re submitting, then pay by bank account (ACH), debit card, or credit card. Once payment clears, write the Pay.gov confirmation number on page 1 of your Form 8802 before you send it. If you’d rather pay by check or money order, make it payable to “United States Treasury” and include it in the mailed package.⁶

Submit the Application

You can mail or fax the signed application. Uploading a copy to Pay.gov as part of the payment step does not replace this submission.

Standard USPS mail:

Department of the Treasury
Internal Revenue Service
Philadelphia, PA 19255-0625

Private delivery services (FedEx, UPS, DHL):

Internal Revenue Service
2970 Market Street
BLN# 3-E08.123
Philadelphia, PA 19104-5016¹

Use a trackable service so you have proof of postmark and delivery.

To fax, you must have paid the fee electronically first. You can send up to 10 Forms 8802 with all attachments in a single transmission, up to 100 pages total. Include a cover sheet with the page count. The toll-free number for US filers is 877-824-9110. From inside or outside the US, 304-707-9792 also works but is not toll-free.¹

One timing rule catches people off guard. You cannot submit a Form 8802 for a current-year certification before December 1 of the prior year. A request for a 2026 Form 6166 must be postmarked December 1, 2025, or later. Anything earlier is returned unprocessed.¹

Processing Time and Follow-Up

Submit at least 45 days before you need to give Form 6166 to the foreign authority. Complex entity requests and applications that need extra documentation often take longer. If the IRS anticipates a significant delay, it will contact you after 30 days.¹

Once approved, the IRS mails Form 6166 to the address on Line 3a, or to your authorized representative if a Form 2848 or Form 8821 is attached. To check on a pending application, call 267-941-1000 (not toll-free) and select the US residency option.⁶ If the IRS asks for additional information, respond quickly. Failing to respond will cause the IRS to close the application, and you’ll have to start over with a new form and a new user fee.

Common Reasons Applications Get Rejected

Name or TIN mismatch. The details on Form 8802 must match your most recent tax return exactly.
Unfiled tax returns. The IRS checks your filing history during review; a missing required return will get the application denied.
Missing or wrong perjury statement. Each applicant type requires specific language from Table 2 of the instructions.
Unsigned or undated form.
Premature submission. Applications postmarked before December 1 for the following year are returned.⁴
Wrong or missing user fee, or a Pay.gov confirmation number not written on the form.
Pass-through gaps. Failing to document the US residency of all consenting owners of a partnership or similar entity.

If the IRS or a Foreign Country Denies You

If the IRS denies your Form 8802, or if a treaty partner refuses treaty benefits after you present Form 6166, you can request US competent authority assistance under Revenue Procedure 2015-40. The competent authority process involves the US and the foreign country consulting to reach a mutual agreement on your residency status; the US will not make a one-sided determination.⁶ This route only exists where a US income tax treaty is in place. If there’s no treaty, there’s no competent authority mechanism to invoke.

1
Internal Revenue Service. Form 8802 – Application for United States Residency Certification
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Internal Revenue Service. About Form 8802, Application for U.S. Residency Certification
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Internal Revenue Service. Certification of U.S. Residency for Tax Treaty Purposes
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Internal Revenue Service. Instructions for Form 8802
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Internal Revenue Service. Form 6166 – Certification of U.S. Tax Residency
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Internal Revenue Service. Instructions for Form 8802
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Internal Revenue Service. Tax Treaty Tables