Who issues a tax residency certificate?

The tax authority of the country claiming you as resident — not a lawyer, a notary or a formation agent. In the United States it is the IRS, and the certificate itself is Form 6166, applied for on Form 8802.

Can my US LLC get one?

A single-member LLC is disregarded for US federal tax, so it is generally the owner's residency that the certificate speaks to, not the company's. Where a company certificate is possible at all it depends on how the entity is classified and where it is managed. This is the question worth asking a CPA before you apply rather than after.

How long does it take?

Weeks rather than days, and longer around filing season. Apply before you need it. A payer who is about to withhold at the full rate will not wait, and once tax has been withheld, recovering it means filing a return in that country instead of showing a certificate.

What if I am resident nowhere?

Then no authority will certify you, which is the practical cost of perpetual travel that the marketing rarely mentions. Treaty rates, many brokerage accounts and some banking relationships assume you are resident somewhere and can prove it.

Tax residency when you move countries

Guide · 3 min read

Tax residency certificate: what it is and how to get one

It is not a status and it does not make you resident anywhere. It is a receipt for a status you already have, and it is nearly always wanted by somebody else rather than by you.

The short answer

A tax residency certificate is a document issued by a country's tax authority confirming you were tax resident there for a given period. It is used to claim a reduced withholding rate under a double taxation treaty, and to satisfy banks and payers who need proof before applying one. It certifies residency; it does not create it.

A tax residency certificate is a document issued by a country's tax authority confirming that you were tax resident there for a stated period. It proves a status you already hold. It does not grant one, and applying for it in a country whose residency test you do not meet gets you a refusal rather than a residency.

What a tax residency certificate is used for

Claiming a double tax treaty rate. The common case. Without proof of residency in the treaty country, a payer withholds at the domestic statutory rate on dividends, interest or royalties.
Satisfying a bank or broker. Account opening and CRS self-certification often ask you to evidence the residency you declared, particularly where your nationality, address and phone number point at three different countries.
Resolving a dual-residency argument. Where two countries both claim you, a certificate from one is the starting evidence for applying the treaty's tie-breaker.

How to get a tax residency certificate

Establish that you actually meet the test. Day counts, a permanent home, and where your personal and economic ties sit. A certificate is downstream of this, never a substitute for it.
Find the right form. Each authority has its own. In the United States you file Form 8802 and receive Form 6166; a user fee applies and it is charged per application, not per certificate.
Name the treaty partner and the tax year. Certificates are usually issued for a specific year, and often for a specific country that will receive them. Ask for every year and every country you need in one application.
Apply early. Processing runs to weeks, and longer in the months either side of a filing deadline.

Why a tax residency certificate gets refused

You did not meet the residency test for the year you asked about — the most common reason, and not one a better-drafted application fixes.
You asked for the current year before it ended, where that authority certifies only completed periods.
The name or taxpayer number does not match the authority's record.
You have not filed the returns that would make you visible as a resident in the first place.

Where the certificate sits in the wider picture

The certificate is the last step, not the first. Choosing where to be resident, meeting that country's test, and filing there come before it — and most of the cost and all of the risk is in those, not in the form.

Residency, handled end to end

Residency applications are handled by immigration counsel admitted in the country concerned, with the day counts, documents and expiry dates tracked in one place afterwards — which is what makes a certificate straightforward to obtain when you need one.

See how residency works

Frequently asked questions

Who issues a tax residency certificate?: The tax authority of the country claiming you as resident — not a lawyer, a notary or a formation agent. In the United States it is the IRS, and the certificate itself is Form 6166, applied for on Form 8802.
Can my US LLC get one?: A single-member LLC is disregarded for US federal tax, so it is generally the owner's residency that the certificate speaks to, not the company's. Where a company certificate is possible at all it depends on how the entity is classified and where it is managed. This is the question worth asking a CPA before you apply rather than after.
How long does it take?: Weeks rather than days, and longer around filing season. Apply before you need it. A payer who is about to withhold at the full rate will not wait, and once tax has been withheld, recovering it means filing a return in that country instead of showing a certificate.
What if I am resident nowhere?: Then no authority will certify you, which is the practical cost of perpetual travel that the marketing rarely mentions. Treaty rates, many brokerage accounts and some banking relationships assume you are resident somewhere and can prove it.

Sources

Last reviewed September 25, 2026. Verify against the primary source before acting.

Founders 8 does not provide tax advice. Tax residency depends on facts and rules specific to each jurisdiction — review your position with a qualified adviser.