Is a C-corp or an LLC better for a foreign owner?

For most foreign owners who want US tax and filing contained at the entity level, a C-corporation is the cleaner choice: it pays the 21% corporate tax, files its own return, and the foreign owner only faces US tax when profits are distributed as a dividend. An LLC can be simpler and avoid the second layer of tax, but as a pass-through it can pull the foreign owner into a direct US filing obligation and trigger mandatory withholding on the owner's share of income.

What is double taxation for a foreign owner of a US C-corp?

A C-corporation's profit is taxed twice: once at the corporate level at 21%, then again when it is distributed to the foreign owner as a dividend, which is subject to US withholding of 30% under the statute — often reduced by treaty. The combined effect is the price of the C-corp's clean liability wall and containment of US filing at the entity level.

Does a foreign owner of a US LLC pay withholding tax?

It depends on the LLC's tax classification and its income. If the LLC is a partnership with effectively connected income, the partnership must withhold on a foreign partner's share of that income at the highest applicable rate and remit it to the IRS, whether or not cash is distributed. Passive US-source income like certain dividends or royalties is generally subject to 30% FDAP withholding, which a treaty may reduce.

How does a foreign owner avoid two layers of US tax?

The main ways are to use a pass-through structure so profit is taxed only once, or to reduce the second layer with a treaty. A treaty can cut dividend withholding from 30% to as low as 5% or 0% for a qualifying corporate parent, materially shrinking the cost of the second layer. But pass-through treatment comes with its own trade-off — a direct US filing obligation for the foreign owner — so the right answer depends on the specific facts.

BACK TO RESOURCES

Foreign Business Expansion

Choosing a US Entity as a Foreign Owner: C-Corp vs. LLC, Double Tax, and Withholding

As a foreign owner, the entity you pick — C-corp or LLC — decides whether you face two layers of US tax, the branch profits tax, or a personal US filing obligation. Here's how the trade-offs actually run.

SMAART Tax Team

March 12, 2026

7 min read