Tax compliance services in Cambodia.

Yes. Registered companies in Cambodia must meet statutory tax filing obligations regardless of whether the business is actively trading or generating revenue. Monthly nil declarations must be submitted to the General Department of Taxation (GDT) for VAT, withholding tax and Tax on Salary, and an annual Tax on Income return must be filed within three months of the financial year-end. Patent tax is also payable by 31 March each year to maintain a valid business licence.

Failure to meet these obligations can result in financial penalties, classification as an inactive taxpayer or de-registration by the GDT. The penalty structure applies even where no tax is due, as non-filing is treated as non-compliance regardless of trading status.

Most registered companies in Cambodia must submit a monthly tax return to the GDT covering four obligations:

• VAT: charged at 10% on most goods and services, declared monthly on turnover
• Prepayment of Tax on Income (PToI): calculated at 1% of monthly turnover, offsetting the annual corporate income tax liability at year-end
• Tax on Salary: withheld from employee wages at progressive rates up to 20% for residents and remitted monthly
• Withholding tax: applied to payments made to resident and non-resident suppliers and declared in the month the expense is accrued

Monthly returns must be e-filed by the 25th of the following month. Companies submitting hard-copy returns face an earlier deadline of the 20th. The annual Tax on Income return must be filed and any balance paid within three months of the financial year-end, which for most companies falls on 31 March. Patent tax must be renewed no later than 31 March each year.

Late or missing monthly tax filings attract penalties of up to 10% of the tax due, plus interest of 2% per month on any outstanding balance. Penalties apply even where the tax liability is nil, as the GDT treats non-filing as non-compliance regardless of whether any tax is owed.

Companies that identify gaps and file overdue returns before an audit is initiated can request a penalty reduction from the GDT. Proactive correction is generally more cost-effective than waiting for a formal audit to surface the issue. The GDT cross-checks company filings against third-party data, so gaps in filing history are increasingly likely to be detected.

The standard corporate income tax rate in Cambodia is 20%, applying to medium and large taxpayers. Reduced rates apply in specific circumstances:

• Small taxpayers: rates from 0% to 20% depending on sector and annual turnover
• Oil, gas and natural resource extraction companies: 30%, covering timber, ore, gold and precious stones
• Qualified Investment Projects (QIPs): eligible for a tax holiday of up to nine years or a reduced rate of 9%, subject to approval by the Council for the Development of Cambodia

Companies with losses in a given year remain subject to a minimum tax of 1% of annual turnover, payable alongside the annual Tax on Income return, unless the company holds QIP status or qualifies for a specific exemption. This is a common source of unexpected liability for early-stage businesses.

For a broader overview of how the Cambodian tax system works, see Acclime’s introduction to taxation in Cambodia.

Payments made by a Cambodian company to non-resident entities are subject to withholding tax (WHT), which the Cambodian payer must deduct and remit to the GDT. The standard WHT rate on payments to non-residents is 14%, applying to services, dividends, interest and royalties.

Cambodia has a limited double taxation agreement (DTA) network. Confirmed treaty partners include China, Singapore, Thailand, Brunei, Indonesia, Malaysia, Vietnam and South Korea, among others. Where a treaty applies, reduced rates may be available subject to the beneficial ownership and substance conditions set out in the relevant agreement. Withholding tax must be declared in the monthly return for the period in which the expense is accrued, not when payment is made. Companies with regular cross-border payment obligations should confirm their treaty position and document the commercial basis for each payment type before transactions are made.