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Updated 2026-10-21 5 min
In short
- ●On October 20, 2026, EuroCham Cambodia published an interview with Solveig Merrien, resident twinning adviser for the EU twinning project "Strengthening Tax Revenue Collection in Cambodia" (source: Cambodia Investment Review).
- ●The project works from Phnom Penh with the General Department of Taxation (GDT). It rests on three pillars: personal income tax, tax audit systems and human resources management.
- ●For expats and entrepreneurs in Siem Reap, the trend points to a more structured tax administration. Clean record-keeping is becoming a real asset.
- ●The project involves the private sector, including EuroCham, in discussions on the reforms. Businesses can therefore make their voices heard.
3 reform pillars
Key figure
Published Oct. 20, 2026
Date
Phnom Penh (GDT)
Location(s)
Cambodia Investment Review / EuroCham
Source
The Facts at a Glance
- 3 pillars. The project covers personal income tax (PIT), tax audit systems and human resources management.
- October 20, 2026. Publication date of the EuroCham interview with Solveig Merrien, relayed by Cambodia Investment Review.
- Phnom Penh. The coordination team works on site, alongside Cambodia's General Department of Taxation (GDT).
- 3 institutional partners. Expertise France (AFD group), the French DGFiP and Finland's HAUS institute are delivering the project. The EU Delegation to Cambodia is the contracting authority.
- Capital gains tax included. The project also covers capital gains tax (CGT), in addition to personal income tax.
How It Unfolded
The interview doesn't give a detailed schedule. Here are the project's main stages, from the groundwork to the expected next steps.
- Groundwork: the EU chooses the Twinning model, a cooperation tool between administrations. It places civil servants from member states inside the beneficiary institution, in this case the GDT.
- Consortium formed: Expertise France and the French DGFiP team up with Finland's HAUS institute to support the GDT.
- Setup on the ground: a resident adviser, a project assistant and a language assistant coordinate activities from Phnom Penh. They are guided by Cambodian, French and Finnish project leaders.
- Implementation: short-term experts from the DGFiP and HAUS step in. They work with their GDT counterparts on income tax, tax audit and human resources.
- Private sector consultation: EuroCham and other business associations take part in discussions on the reforms.
- October 20, 2026: EuroCham Cambodia publishes the interview, which describes a typical week inside the GDT and the five-year vision.
- Expected next steps: the stated goal is a stronger and more self-sufficient Cambodian tax system within five years.
Breakdown
The project is organized into three components, with complementary players. Here is what the interview lets us identify.
| Segment | Figure | Details |
|---|---|---|
| Pillar 1: income tax (PIT) | 1 pillar out of 3 | Affects individuals, and therefore directly affects expats who are employees or self-employed. The project also includes capital gains tax (CGT). |
| Pillar 2: tax audit | 1 pillar out of 3 | Strengthens the GDT's inspection methods. Businesses can expect more structured procedures. |
| Pillar 3: human resources | 1 pillar out of 3 | Focuses on managing the GDT's staff. It supports the other two pillars. |
| Coordination team | 3 people | A resident adviser, a project assistant and a language assistant, based in Phnom Penh. |
| Technical partners | 3 institutions | Expertise France, DGFiP (France) and HAUS (Finland), under the contracting authority of the EU Delegation. |
What This Means in Practice in Siem Reap
- No new rules announced. The interview presents an institutional capacity-building project, with no new rate or specific new obligation for residents.
- A more structured administration. The GDT is working on its audit and income tax methods. Well-kept records will be easier to process.
- Local entrepreneurs affected. Owners of guesthouses, cafés, agencies and service companies should prepare for stricter tax compliance.
- Keep an eye on capital gains tax. If you plan to sell company shares or other assets, follow developments on CGT with your adviser.
- The private sector's voice is heard. EuroCham and other associations take part in the discussions. Businesses can pass on their feedback through these channels.
How to Stay Out of Trouble
- Step 1: check your tax status. Review your resident or non-resident situation and your filing obligations with a licensed accountant.
- Step 2: keep your supporting documents. Store contracts, invoices, bank statements and payslips in an organized file, both paper and digital.
- Step 3: file on time. Mark the monthly and annual deadlines that apply to your status or your company in your calendar.
- Step 4: separate personal and business accounts. Clear bookkeeping makes any potential audit easier.
- Step 5: plan for any sale. Before selling a business, shares or property, get advice on how capital gains will be treated.
- Step 6: use official channels. Get your information from the GDT or a recognized adviser, not from rumors or unverified intermediaries.
- Step 7: follow chamber of commerce news. Publications from EuroCham and other business associations relay consultations and changes to the tax framework.
Frequently asked questions
What is the "Strengthening Tax Revenue Collection in Cambodia" project?
It is an EU-funded twinning project. Expertise France is leading it with Finland's HAUS institute, in support of Cambodia's General Department of Taxation. Its aim is to strengthen the tax system.
What are the project's three pillars?
Personal income tax, tax audit systems and human resources management. The project also covers capital gains tax (CGT).
Does this interview announce new taxes for expats?
No. The interview describes an institutional cooperation project aimed at strengthening the administration's methods. It announces no new rate and no new obligation for residents.
How does the Twinning model differ from traditional technical assistance?
According to Solveig Merrien, Twinning places civil servants from EU member states inside the beneficiary institution, in this case the GDT. It promotes lasting knowledge transfer and local ownership, as opposed to traditional outside consulting.
What should Siem Reap entrepreneurs do right now?
Bring their accounting and supporting documents up to date, meet filing deadlines and consult a licensed accountant. Following chamber of commerce publications is also a good way to stay informed about developments.
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Siem Reap Hub
The community guide for expats and travelers in Siem Reap, Cambodia