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Updated 2026-06-20 5 min
In short
- ●Linda Oum, Tax Manager at HEINEKEN and Vice President of EuroCham's Tax Committee, shares her analysis of Cambodia's tax reform.
- ●Digitalization of tax returns and alignment with international standards are the main trends.
- ●Expat entrepreneurs must strengthen their documentation and prepare for increased tax audits.
- ●The EuroCham Tax Forum 2026 will notably address the capital gains tax.
Cambodia Investment Review
Source
June 20, 2026
Publication Date
Linda Oum (HEINEKEN, EuroCham)
Interviewee
EuroCham Tax Forum 2026
Key Event
Key Facts at a Glance
- Accelerated digitalization. Cambodia's tax system is modernizing its online tax returns, improving transparency but increasing compliance requirements.
- International alignment. Cambodia is moving closer to global tax standards, particularly in transfer pricing and documentation.
- Public-private consultation. Tax authorities are increasingly open to dialogue with the private sector through forums like EuroCham.
- Capital gains tax under debate. The capital gains tax raises questions about valuation, scope, and taxpayer preparedness.
- White Book 2027. The tax chapter of the 2027 White Book formulates recommendations to clarify and harmonize regulations.
How It Happened
Linda Oum's interview is part of the preparation for the EuroCham Tax Forum 2026. Here are the key steps of recent tax reform in Cambodia.
- 2018-2020: Start of digitalization of tax returns with the e-Filing system for VAT and income tax.
- 2021-2023: Gradual introduction of the capital gains tax for real estate transactions and asset disposals.
- 2024: Strengthening of tax audits and documentation requirements (transfer pricing, economic substance).
- 2025: Public consultation on the 2027 White Book, including tax recommendations.
- June 20, 2026: Publication of Linda Oum's interview in Cambodia Investment Review, announcing the themes of the Tax Forum 2026.
- July 2026: Holding of the EuroCham Tax Forum 2026, with panels on capital gains tax and ongoing reforms.
Breakdown
Tax issues affect different segments of businesses and taxpayers. Here is a breakdown of the main sectors impacted.
| Segment | Impact | Detail |
|---|---|---|
| Large enterprises (e.g., HEINEKEN) | Enhanced compliance | Transfer pricing documentation, frequent audits, need for advanced tax advice. |
| Local SMEs | Digitalization of tax returns | Obligation to use e-Filing, training needed, risk of penalties for errors. |
| Startups and foreign entrepreneurs | Capital gains tax | Uncertainty about valuation of gains when selling shares or assets. |
| Real estate investors | Real estate capital gains tax | Application since 2024, difficulties in valuation and filing. |
| Liberal professions (freelancers, consultants) | Simplified tax returns | Possible flat-rate regime, but vigilance on thresholds and filing obligations. |
What It Changes in Practice in Siem Reap
- Expat entrepreneurs must keep rigorous accounting and retain all supporting documents to face potential audits.
- Digitalization of tax returns (e-Filing) is now mandatory for most taxes: you need to create an online account and meet deadlines.
- The capital gains tax applies to sales of real estate or shares: anticipate its calculation when selling a property or business.
- Transfer pricing is scrutinized: if you invoice services to your parent company or a subsidiary, prepare adequate documentation.
- Dialogue with the tax administration is improving: do not hesitate to request tax rulings or participate in public consultations via EuroCham.
How to Avoid Trouble
- Step 1: Ensure you are registered with the Tax Department and have a VAT number if your turnover exceeds the threshold.
- Step 2: Use the e-Filing system to submit your monthly and annual returns on time.
- Step 3: Keep all supporting documents (invoices, contracts, bank statements) for at least 10 years.
- Step 4: For real estate transactions or asset disposals, have the property appraised by an approved expert to determine the taxable gain.
- Step 5: If you are a multinational company, document your transfer pricing in accordance with OECD guidelines.
- Step 6: Follow tax news via EuroCham or a tax advisor to anticipate regulatory changes.
- Step 7: When in doubt, consult a certified accountant or a tax lawyer specialized in Cambodia.
Frequently asked questions
What is the EuroCham Tax Forum 2026?
It is an annual event organized by EuroCham Cambodia that brings together tax experts, authorities, and businesses to discuss reforms and challenges of the Cambodian tax system.
Does the capital gains tax apply to expats?
Yes, it applies to any person realizing a gain from the sale of real estate, shares, or assets in Cambodia, including foreigners.
What are the main recent tax changes in Cambodia?
Digitalization of tax returns (e-Filing), strengthened controls on transfer pricing, and the gradual introduction of the capital gains tax.
How can an expat entrepreneur prepare for a tax audit?
By keeping rigorous accounting, retaining all supporting documents, correctly declaring income, and getting assistance from a professional.
Where can I get help with my tax obligations in Siem Reap?
From local accounting firms, tax advisors, or through events and resources from EuroCham Cambodia.
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