What does a tax treaty do?
A treaty between the US and another country decides which country may tax which income, and caps the tax at source on some kinds of income. It is designed to stop the same income being taxed twice, and it works alongside the domestic rules: you apply the US rules first, then the treaty can reduce or remove the US tax. The IRS publishes the full list of treaties and their text.
How does a treaty treat business profits?
Most US treaties say business profits of a resident of the other country are taxable in the US only if the business has a permanent establishment in the US, and then only on profits attributable to it. A permanent establishment generally means a fixed place of business, such as an office, branch or workshop, or a dependent agent who habitually concludes contracts in the US.
That matters because a foreign-owned LLC can have income effectively connected with a US trade or business under domestic law, yet no permanent establishment under the treaty. In that case the treaty can remove the US tax on those business profits. See effectively connected income and US trade or business.
How do treaties change withholding?
| Income | US rate without a treaty | What a treaty can do |
|---|---|---|
| Dividends from US corporations | 30% | Often reduce to 15%, or lower for large corporate shareholders |
| Interest | 30%, unless an exemption applies | Often reduce, sometimes to zero |
| Royalties | 30% | Often reduce, sometimes to zero |
| Business profits without a permanent establishment | Taxed at normal rates if effectively connected | Exempt from US tax |
Rates differ treaty by treaty, so check the article for your country. See the 30% withholding explained.
How does a treaty apply to an LLC?
A single-member LLC owned by a foreign person is disregarded for US income tax, so treaty benefits are claimed by the owner, as the person the income belongs to. The owner must be a resident of the treaty country under that treaty and meet any limitation on benefits article. Some countries treat a US LLC as a company rather than as transparent, which can make a treaty claim harder in that country. See US LLC and tax in your home country.
How do you claim treaty benefits?
Confirm residence and eligibility
Under the treaty's residence and limitation on benefits articles.
Identify the article
Business profits, dividends, interest, royalties or services.
Claim on payments
Give the payer Form W-8BEN, or W-8BEN-E for an entity, completing Part II with the article and rate.
Claim on a return
Where a treaty position changes the tax on a return, such as exempting business profits, disclose it on Form 8833 with Form 1040-NR or 1120-F.
A treaty position that must be disclosed and is not carries a penalty of $1,000 for individuals and $10,000 for corporations for each failure. See Form W-8BEN instructions and Form 1040-NR.
Foreign corporations claim treaty positions on Form 1120-F.
What does a treaty not change?
- Information returns. A foreign-owned single-member LLC still files Form 5472 with a pro forma Form 1120 every year it has reportable transactions. See Form 5472.
- State taxes. US states are generally not bound by federal income tax treaties.
- US citizens and residents. A savings clause in most treaties preserves the US right to tax its own citizens and residents.
- Your home country's tax. The treaty decides which country may tax, not whether your home country does.
What if your country has no treaty?
Then the domestic rules apply in full. For most foreign owners whose LLC has no US office, staff or dependent agents, the domestic rules already mean no US income tax on business profits, because the income is not effectively connected. The treaty mainly matters where there is some US activity. See do foreign-owned LLCs pay US tax.
Does a treaty apply to you?
We check your country's treaty against your LLC's activity, claim the benefits on the right forms, and keep the filings that still apply.
Questions people ask
Does a tax treaty mean my US LLC pays no tax?
Not automatically. A treaty can remove US tax on business profits without a US permanent establishment, but only for eligible residents who claim it.
What is a permanent establishment?
Generally a fixed place of business in the US, such as an office, or a dependent agent who habitually concludes contracts there.
How do I claim a tax treaty benefit?
On Form W-8BEN or W-8BEN-E for payments made to you, and on Form 8833 with your US return where a treaty position must be disclosed.
Does a treaty remove the Form 5472 requirement?
No. Information returns such as Form 5472 are still required.
Sources
Every fee, date and rule on this page was taken from these official and primary sources.
- IRS: United States income tax treaties, A to Z
- IRS: Form 8833, Treaty-Based Return Position Disclosure
- IRS Publication 901: U.S. Tax Treaties
- IRS: Instructions for Form 5472 (Rev. December 2024)
Rules and fees change. If you are reading this long after October 1, 2026, confirm the figures with the source before you rely on them.
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This guide is general information. It is not tax or legal advice for your situation.