Tax Preparation Services in Thailand
reliable and structured tax preparation services designed to support businesses operating in Thailand with absolute confidence. Whether you’re managing a local limited company, a BOI-promoted entity, or a foreign-owned branch, our tax specialists ensure your filings are completed correctly, submitted on time, and aligned with current Thai tax laws.
Outsourced Tax Services
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Every company registered in Thailand is required to comply with local tax laws governed by the Revenue Department of Thailand. This includes:
Corporate Income Tax (CIT)
Withholding Tax (WHT)
Value-Added Tax (VAT)
- Other tax related
Foreign companies must also consider how their Thai entity’s activities interact with their head office, including transfer pricing and cross-border payment reporting.
What Are Tax Preparation Services?
Tax preparation services refer to the process of calculating, documenting, and submitting all required tax filings to the Thai Revenue Department in full compliance with local regulations. In Thailand, businesses are required to submit multiple types of tax filings each month and each fiscal year. This includes VAT returns, withholding tax returns, and corporate income tax filings.
A professional tax preparer ensures that:
Your tax filings reflect the correct amounts based on accurate transaction records
You apply the correct withholding tax rates on service payments
Every single transaction of your taxes are fully reconciled
You can check-confirm before filing, meet all deadlines and avoid penalties
Choosing experienced tax preparation services is not only about avoiding late fees or mistakes—it’s about having a clean tax profile that protects your business and creates trust with both the government and your stakeholders.
Why Tax Preparation Services Matter in Thailand
Thailand has one of the most regulated tax environments in Southeast Asia. Monthly and annual filings are mandatory, and errors can trigger audits, penalties, or legal issues. Many businesses underestimate the complexity of Thai tax reporting, especially those dealing with cross-border transactions, BOI tax privileges, or foreign ownership structures.
Professional tax preparation services provide more than just form submissions.
Your filings comply with Thai Revenue Department standards
Tax documents are bilingual for internal and external stakeholders
Each return is archived and available for audit or internal use
You don’t overpay due to missed deductions or exemptions
Why Tax Preparation Services Are Critical for Foreign Investors
Foreign companies and BOI-promoted businesses operating in Thailand must maintain a high standard of tax compliance. Incorrect filings—especially involving VAT or international service fees—can delay work permits, affect dividend distribution, or cause issues with capital repatriation. Our tax preparation services ensure your company’s filings support your long-term investment strategy and regulatory standing.
Tax Preparation Services Packages
We offer flexible monthly and annual tax filing packages based on your company’s transaction volume. Our goal is to provide consistent support, simplify your compliance, and reduce your internal workload. Whether you need ongoing monthly submissions or once-a-year corporate income tax filing, our packages are structured to meet your operational scale.
Tax Starter Package
1-30 Transactions per month-
1-30 Transactions per month
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Tax Document Archiving
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Withholding Tax (WHT)- Domestic
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Withholding Tax (WHT) - Oversea
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Issuing withholding tax certificate*
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Value Add Tax (VAT) - Oversea
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Value Add Tax (VAT) – Domestic
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VAT Input - output Report
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English translation of all tax form
Tax Growth Package
31-60 Transactions per month-
31-60 Transactions per month
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Tax document archiving
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Withholding Tax (WHT)- Domestic
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Withholding Tax (WHT) - Oversea
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Issuing withholding tax certificate*
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Value Add Tax (VAT) - Oversea
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Value Add Tax (VAT) – Domestic
-
VAT Input - output Report
-
English translation of all tax form
Tax Strategic Package
61-100 Transactions per month-
61-100 Transactions per month
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Tax document archiving
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Withholding Tax (WHT)- Domestic
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Withholding Tax (WHT) - Oversea
-
Issuing withholding tax certificate*
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Value Add Tax (VAT) - Oversea
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Value Add Tax (VAT) – Domestic
-
VAT Input - output Report
-
English translation of all tax form
Tax Executive Package
101-150 Transactions per month-
101-150 Transactions per month
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Tax document archiving
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Withholding Tax (WHT)- Domestic
-
Withholding Tax (WHT) - Oversea
-
Issuing withholding tax certificate*
-
Value Add Tax (VAT) - Oversea
-
Value Add Tax (VAT) – Domestic
-
VAT Input - output Report
-
English translation of all tax form
Why “Tax Preparation Services” Are an Investment, Not a Cost
Effective tax preparation is not an expense—it’s a safeguard. It prevents regulatory issues, supports clean audits, and provides transparency to directors, investors, and partners. With ACCOUNTINFIRM, your business is not only compliant but also well-positioned for sustainable growth in Thailand.
Frequently Asked Questions | FAQs
We have answered FAQs about accounting bookkeeping and tax filing or more complex accounting services
What are outsourced tax services in Thailand?
Outsourced tax services involve hiring a professional firm to manage all your tax-related responsibilities in Thailand. This includes preparing and filing corporate income tax, VAT, withholding tax, and personal income tax for directors or employees—ensuring full compliance with Thai tax laws.
Can you file tax returns on behalf of my company?
Yes. With authorization, we can act as your company’s tax representative and file all required forms directly with the Thai Revenue Department. We also provide monthly reminders and summary reports.
How do you handle document collection and processing each month?
We use a secure online document submission portal. Each month, you’ll receive a checklist and reminder. You simply upload scanned tax invoices, receipts, and payment records. Our team will prepare the filings and submit them on your behalf.
Can you assist with BOI-promoted companies or special tax conditions?
Absolutely. We have experience supporting BOI companies and managing conditions related to tax exemptions, VAT refunds, and reporting obligations.
What happens if we are late in submitting tax documents?
We send proactive reminders to help you stay on track. However, if filings are delayed, we will still assist with late submissions and communicate with the Revenue Department on your behalf. Penalties and interest may apply per Thai tax law.
Are your services available in English?
Yes. All communication, reports, and filings can be provided in both English and Thai, making it easy for foreign business owners and managers to understand.
Can you help if the company is audited by the Revenue Department?
Yes. We offer audit support services, including document preparation, representation, and communication with government officers. Our team is experienced in guiding clients through audits smoothly.
Do you provide full accounting and bookkeeping as well?
Yes. We offer complete outsourced accounting solutions including bookkeeping, tax, payroll, and financial reporting—everything your business needs to stay compliant in Thailand.
Maximize Your Company’s Potential with our Team’s Support.
Don’t let tax deadlines and paperwork slow down your business. Let our experts take care of your tax preparation.
Let’s set up and kick things off!
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