Navigating US Tax Returns with Foreign Income

by Lance Morris
Mar 23, 2025

Navigating US Tax Returns with Foreign Income

Understanding the tax implications of owning a business in Australia as a US citizen is crucial for compliance.

US citizens must adhere to both US and Australian tax laws.
Australia imposes a corporate tax rate of 30% for most companies.
Small-to-medium businesses with earnings below AUD 50 million and limited passive income benefit from a reduced tax rate of 25%.

Non-resident companies only pay taxes on income sourced within Australia.

Filing remains a significant responsibility. Regardless of residence, US citizens must file annual returns to the IRS, including income, estate, and gift taxes. Companies with over 50% US ownership must complete IRS Form 5471, which requires thorough financial disclosure.

This complexity often necessitates the assistance of a tax professional.

International tax rules play a key role as well. Australia will adopt OECD’s Global Anti-Base Erosion Rules starting January 2024.

This includes the Income Inclusion Rule, impacting Australian multinationals, and the Undertaxed Profits Rule, applying to foreign multinationals by January 2025.

These rules enforce a minimum tax rate on profits for larger enterprises.

Capital gains are subject to the corporate tax rate, while non-residents incur taxes only on Australian property gains.

Businesses must also consider how permanent establishments in Australia trigger local tax obligations.

Navigating the dual taxation landscape requires careful planning.

US Citizens may claim foreign tax credits to mitigate the effects.

Engaging a knowledgeable tax advisor can aid in managing these multifaceted obligations effectively.

Contact us here for further details if you have any questions.