Form 5471 for a Singapore Company: US Owners, NCTI and the 17% Rate

Short answer: A US citizen or resident who controls or holds 10% or more of a Singapore Pte Ltd will usually have to attach Form 5471 to their US return. For tax years beginning after 31 December 2025, GILTI becomes net CFC tested income (NCTI). Singapore’s 17% rate sits below the 18.9% high-tax threshold, so accurate Singapore figures matter.

If you are a US person who owns a Singapore company, two tax systems look at the same profits. This guide covers Form 5471 for a Singapore company from both sides: the Singapore side in detail, taken from IRAS (the Inland Revenue Authority of Singapore), and the US side as a list of questions to take to your US tax preparer. Raffles Corporate Services prepares the Singapore accounts and Singapore tax filings. We do not give US tax advice, and nothing here replaces advice from a US-qualified preparer.

Raffles Corporate Services works with a panel of experienced Singapore law firms who offer cost-effective and efficient legal service and advice. This article is general information only and is not legal advice.

How much tax does a Singapore Pte Ltd actually pay?

The headline rate is 17% of chargeable income, but most small companies pay a lower effective rate because of two exemption schemes. Your US preparer needs the actual Singapore tax paid, not the headline rate.

The figures below are from the IRAS page on corporate tax rates and exemptions. Chargeable income is taxable profit after tax adjustments and capital allowances. A company then gets one of two exemptions on its “normal chargeable income” (income taxed at the 17% rate):

SUTE has conditions that matter for US owners. IRAS requires the company to be incorporated in Singapore, be tax resident in Singapore for that YA, and have no more than 20 shareholders holding its shares directly and beneficially. Either all of them must be individuals, or at least one must be an individual holding 10% or more of the ordinary shares. Companies whose principal activity is investment holding, and property developers, are excluded. A subsidiary wholly owned by a US corporation therefore usually falls under PTE instead. Our guide to the start-up tax exemption in 2026 explains the first three YAs in more detail.

IRAS has also announced a YA 2026 corporate income tax rebate of 50% of tax payable, with total benefits capped at S$40,000. Each of these reduces the Singapore tax actually paid, the number that matters on the US side.

Are dividends from a Singapore company taxed in Singapore?

No. Dividends paid by a Singapore resident company under the one-tier system are not taxed in the shareholder’s hands in Singapore, and no Singapore withholding tax is deducted when they are paid to you in the US.

IRAS explains that one-tier dividends are not taxable because the tax paid by the company is final, and that Singapore currently does not impose withholding tax on dividends. So the only Singapore tax in the picture is the corporate tax the company paid, after exemptions. How the US treats the dividend is a question for your US preparer. For the Singapore steps to declare one, see dividend declaration under section 403 of the Companies Act.

Who has to file Form 5471 for a Singapore company?

Form 5471 is filed by certain US persons who are officers, directors or shareholders of a foreign corporation, such as a Singapore Pte Ltd. The IRS sorts filers into five categories, and one person can fall into several.

The form satisfies the reporting rules in sections 6038 and 6046 of the Internal Revenue Code. In summary, from the IRS Instructions for Form 5471:

A CFC, in the IRS instructions, is a foreign corporation where US shareholders together own more than 50% of the voting power or value on any day of its tax year. A US citizen who owns 100% of a Singapore company is usually both a Category 4 and a Category 5 filer; the IRS says such a sole owner completes all six pages of Form 5471 and the separate schedules. Ownership can be direct, indirect or constructive, so your US preparer should confirm the categories.

What changed when GILTI became NCTI for a Singapore Pte Ltd?

The 2025 US law commonly called the One Big Beautiful Bill Act (Public Law 119-21, 4 July 2025) amended section 951A. For taxable years beginning after 31 December 2025, the US shareholder includes “net CFC tested income” (NCTI) in place of the former global intangible low-taxed income (GILTI).

IRS Notice 2025-72 states that the amendments to sections 951, 951A and 960(d) apply to taxable years of foreign corporations beginning after 31 December 2025. For a Singapore company with a 31 December year end, the first year affected is the one beginning 1 January 2026.

The notice also records that, for US corporations, the deemed-paid foreign tax credit under section 960(d) rises from 80% to 90% of the foreign taxes attributable to tested income. That is where the Singapore tax figure feeds into the US computation. Questions to ask your US preparer:

1. Is my Singapore company a CFC, and which Form 5471 categories apply to me this year?
2. When does the Singapore company’s first taxable year under the NCTI rules begin, given its financial year end?
3. How will the Singapore tax paid by the company be used in my US return, given how I hold the shares?
4. Does the high-tax exclusion help, given the company’s actual Singapore effective rate?
5. What happens to my US position when the company pays me a one-tier dividend?

Why does Singapore’s 17% rate matter for the high-tax exclusion?

US regulations allow an election to exclude income that was taxed abroad at an effective rate greater than 90% of the top US corporate rate. With the section 11 rate at 21%, that threshold works out at 18.9%, which is above Singapore’s 17% headline rate.

Treasury Regulations section 1.951A-2(c)(7) requires an election and an effective foreign tax rate “greater than 90 percent of the maximum rate of tax specified in section 11”. IRS Publication 542 states that corporations figure their tax at 21%, and 90% of 21% is 18.9%.

Singapore’s 17% is below 18.9% before exemptions, and partial exemption, SUTE or the YA 2026 rebate push a small company’s effective rate lower. The high-tax exclusion is therefore unlikely to help a typical Singapore trading company. The effective rate is calculated under US rules, item by item, so ask your US preparer to run the test on the actual figures.

What Singapore records does your US preparer need?

Your US preparer needs the Singapore financial statements, tax computation, share register and related-party details, in Singapore dollars with clear dates. Getting these early avoids a rushed Form 5471.

Timing matters. Form 5471 is due with your US return, and the Singapore and US calendars do not line up. Ask your Singapore accountant to finalise the accounts and the tax computation before your US deadline, even if the Singapore filing itself is due at a different time. See our guide to a first corporate tax season for the Singapore calendar.

What does Raffles Corporate Services do, and what stays with your US preparer?

We handle the Singapore side: accounts, corporate tax, secretarial records and the data pack. The US return, Form 5471 and all US tax positions stay with your US preparer.

1. We prepare the Singapore financial statements and tax computation in SGD.
2. We confirm whether SUTE or partial tax exemption applies, and the tax payable after any YA rebate.
3. We update the register of members and minutes for share changes and dividends (see also our sister site, Singapore Secretary Services), and compile the data checklist above for your US preparer.
4. Your US preparer decides the filing categories, the NCTI computation, any high-tax election and the treatment of dividends.

Deciding how to pay yourself? Read director fees vs salary vs dividends, and see foreign ownership rules for Singapore companies. Our free tools help you estimate Singapore tax.

Frequently asked questions

Do I need to file Form 5471 if I own only 5% of a Singapore company?

Possibly not as a shareholder, since most categories use a 10% or more-than-50% test. But indirect and constructive ownership count, and a US officer or director can be a Category 2 filer.

Is a Singapore company’s 17% rate high enough to avoid NCTI?

Not by itself. The high-tax exclusion needs an effective foreign rate above 18.9% (90% of the 21% US corporate rate). Singapore’s 17% is below that.

Does Singapore withhold tax when my company pays me a dividend?

No. IRAS states that Singapore currently does not impose withholding tax on dividends, and one-tier dividends are not taxed in the shareholder’s hands in Singapore.

Can a Singapore company owned by a US corporation claim the start-up tax exemption?

Usually not. SUTE requires all shareholders to be individuals, or at least one individual holding 10% or more of the ordinary shares. Such a company normally claims partial tax exemption instead.

Last reviewed: 18 October 2026. The Editorial Team, Raffles Corporate Services.