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How a foreign-owned Delaware C-Corp is taxed: Form 1120, franchise tax and dividends

What a C-Corporation owned from abroad files and pays each year: Form 1120, Form 5472, Delaware franchise tax by 1 March, estimated tax, and tax on dividends.

Updated 17 September 2026Checked against the sources named in the text

A corporation is a taxpayer in its own right. The IRS looks through an LLC to its owner, but a C-Corporation pays tax on its own profit and files its own return, then pays shareholders out of what's left, with more US tax withheld when a foreign shareholder is paid. That's the cost of the structure investors expect, and for a company running at a loss while it raises money, it's a cost mostly put off. Here's what it files and pays.

Federal

A foreign-owned C-Corporation's federal calendar
Obligation
What
When
Form 1120
The corporate income tax return, on the company's worldwide profit, at the flat federal rate of 21%
15 April for a calendar year, or 15 October with Form 7004
Form 5472
Attached to the 1120 for each foreign shareholder of 25% or more the company had transactions with
With the 1120
Estimated tax
Quarterly payments once the year's tax is expected to be $500 or more
15 April, 15 June, 15 September and 15 December
Withholding on dividends
30%, or the treaty rate, withheld when a dividend is paid to a foreign shareholder, and reported on Forms 1042 and 1042-S
Paid over as withheld; reported by 15 March
Form 1099-NEC
For each US contractor paid $2,000 or more in the year
31 January
Payroll
Only if the corporation employs people in the US
Quarterly and yearly

A corporation with no profit still files a return showing no tax, along with Form 5472 for its foreign shareholders, and the $25,000 penalty for missing Form 5472 applies to corporations just as it does to LLCs.

Delaware

Delaware charges its corporations a $50 annual report fee and a franchise tax, both due by 1 March. The franchise tax can be worked out two ways, and you pay the lower figure. The authorised shares method starts at $175 for 5,000 shares or fewer and rises quickly with more shares. The assumed par value capital method has a $400 minimum. A startup with millions of authorised shares and few assets usually pays less under the second method, often the $400 minimum, which puts the yearly total at about $450. Delaware doesn't charge income tax on a corporation that doesn't operate there. Paying late adds a $200 penalty and 1.5% interest a month, and a corporation that goes a year without paying or filing loses its charter.

Dividends and the second layer of tax

When the corporation pays a dividend to a foreign shareholder, it withholds 30%, or the lower rate in the shareholder's treaty, and pays it to the IRS. That's the double tax: 21% on the profit, then withholding on what's paid out. Startups avoid it by not paying dividends, which they weren't going to do anyway. A profitable business owned from abroad that isn't raising money usually avoids it by being an LLC.

Where the corporation is run from

A corporation run day to day by founders abroad is a US corporation for US tax. It may also count as resident where the founders live, if that country treats companies as resident where they're managed. Tell your accountant at home where decisions are made. The country pages cover the rules for many countries.

What we do

Premium prepares Form 1120 and Form 5472, has a CPA review them, and files them. It also files the Delaware annual report and pays the franchise tax on your behalf. Every plan puts 1 March and 15 April on your calendar.

Questions

The questions this guide gets asked.

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Federal corporate tax of 21% on its profit, filed on Form 1120, plus Delaware's $50 annual report fee and franchise tax by 1 March. The franchise tax starts at $175 and is often $400 for a startup. Dividends paid to a foreign shareholder have 30%, or the treaty rate, withheld.

Yes. It files Form 1120 showing no tax, with Form 5472 for each foreign shareholder of 25% or more, by 15 April. The Delaware franchise tax is owed whether or not there was a profit.

By 1 March each year, with the $50 annual report. Paying late adds a $200 penalty and 1.5% interest a month.

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