Cambodia's economic transformation since the 1990s has been remarkable — from post-Khmer Rouge reconstruction to one of Asia's fastest-growing economies in the 2000s–2010s, driven by garment manufacturing, tourism (Angkor Wat in Siem Reap), and Phnom Penh's growing financial and real estate sector. Cambodia's near-total dollarisation (USD is the de facto currency for most transactions above KHR 10,000) makes it unusual in Asia and provides natural stability for expat savings. Tax rates are low by regional standards — 20% top rate, no capital gains tax at the personal level, and no wealth tax. Phnom Penh's expat community is diverse — NGO workers, digital nomads, English teachers, hospitality professionals, and a growing number of real estate and business investors. This guide covers what departing Cambodian tax residents need to know in 2026.
Singapore: Cambodia-Singapore DTA (in force). Singapore taxes residents on world income (for residents — remittance basis has been abolished). Cambodian rental income received by Singapore residents: 14% Cambodian withholding; DTA credit in Singapore. Many Southeast Asian business executives maintain operational presence in both Singapore and Cambodia — Singapore as regional HQ, Cambodia as growth market. Singapore's regional business hub status means many Cambodia-based expats are actually employed by Singapore-registered entities.
Australia: No Cambodia-Australia DTA. Australian residents with Cambodian-source income: declare on ATO return; FTC under domestic provisions. Australia has a significant number of returnees from Cambodia (NGO workers, English teachers, tourism professionals, and the Australian-Cambodian diaspora). NSSF amounts received after becoming Australian residents: declare as foreign pension income on Australian return.
USA: No Cambodia-USA DTA. FBAR: Cambodian bank accounts above USD 10,000 aggregate must be reported annually by US persons. US persons in Cambodia (a growing presence in Phnom Penh's business community): must file US returns on worldwide income. Cambodian income tax withheld: FTC via Form 1116. FATCA: Cambodian financial institutions report US account holders to the IRS under CRS-like arrangements.
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