Why Monthly Tax Filing Is Important

Once your business is registered in Cambodia, the next big responsibility is monthly tax filing. Many startups ignore or delay this process — only to face penalties, surprise audits, or even account freezes from the General Department of Taxation (GDT).

Whether you’re running a small shop or a growing company, monthly tax compliance is not optional. It’s the law.

What Taxes Must Be Filed Monthly in Cambodia?

Here are the key tax types most businesses need to file each month:

1. VAT (Value-Added Tax)

  • Who files: Businesses registered for VAT (revenue over $62,500/year or by choice)
  • Rate: 10%
  • Scope: Applies to most sales of goods/services in Cambodia
  • Due Date: By the 20th of the following month
  • Risk of non-filing: 10% fine + interest + account suspension

2. Withholding Tax (WHT)

  • Who files: All companies
  • When: When paying rent, consulting services, or dividends to individuals or foreign companies
  • Rate: Usually 10% or 15%, depending on the case
  • Due Date: Monthly, by the 20th
  • Pro tip: Even if you don’t withhold anything in a month, you still need to submit a “nil” declaration

3. Tax on Salary (TOS)

  • Who files: Employers with salaried staff
  • Rate: Based on a progressive scale (0%–20%)
  • Includes: Gross salary, bonuses, commissions
  • Required: Payroll breakdown + NSSF contributions
  • Due Date: 20th of every month

What Happens If You Don’t File?

Failure to file or late submission may result in:

  • Financial penalties (10%–25% of unpaid tax)
  • Daily interest on unpaid amounts
  • Suspension of your Tax ID (TIN)
  • Difficulties renewing Patent Tax and TOI
  • Legal audit from the GDT

GIANTBROTHER Insight: Many business owners mistakenly think they only need to worry about yearly taxes. But monthly declarations are just as important and required from the first month of registration.

What You Need to File Each Month

To stay compliant, your monthly filing should include:

  • VAT declaration + supporting invoices
  • Withholding tax receipts (if any)
  • Payroll & salary reports
  • Input/output tax reconciliation (if VAT registered)

 

If you’re working with GIANTBROTHER, our team handles:

✔️ Data preparation

✔️ Submission on the GDT E-Filing system

✔️ Compliance alerts & follow-up with GDT if needed

How GIANTBROTHER Can Help?

We offer end-to-end monthly tax declaration services, so you:

  • Avoid GDT fines and late fees
  • Don’t waste time on paperwork
  • Stay focused on your business

 

Our monthly service includes:
 ✅ VAT, TOS, and WHT filings
 ✅ Document prep and GDT submission
 ✅ Certified tax agent oversight
 ✅ Quarterly & annual reports

Conclusion:

Monthly tax filing in Cambodia may seem complicated — but it doesn’t have to be. With the right partner, your business can stay compliant, audit-ready, and stress-free.

Let GIANTBROTHER take care of your taxes while you grow your business.