Solutions / Specialized Accounting Thailand

Specialized Accounting Services for BOI / Export-Only Companies, Branch / Representative Office

UnionSPACE provides premium accounting, bookkeeping, VAT filing, withholding tax filing and compliance support for companies in Thailand with more complex regulatory, tax and reporting requirements.

  • Specialized accounting support for BOI, export-only, branch office and representative office structures
  • Thai Revenue Department-compliant cloud accounting software included
  • Real-time financial reporting and cloud document access available 24/7

Designed for businesses that require more than ordinary bookkeeping — with stronger documentation, clearer compliance trails and better management visibility.

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UnionSPACE specialized accounting services for BOI companies, export-only companies, branch offices and representative offices in Thailand
Specialized Compliance
For BOI, Export and Foreign Business Structures
Client

"Thank you Jane for your excellent service and for the seamless transfer of our accounts from our previous provider."

Soap Steel Co., Ltd.
Client

"Good Job ladies. Thank you for keeping my accounts in good order and for keeping all entries neatly updately. I am able to better understand my business now."

Six & Inspirers Co., Ltd.
Client

"You guys are good. You guys saves us alot money and thank you for representing us to deal with the Thai Revenue Department. "

Rethink Lab Co., Ltd.
Client

"The AI feature in the cloud accounting software is excellent. It help us reduce our work load by heaps."

T & T Shipping (Thailand)
Client

"Thanks for taking away all the complication of accounting and taxes in Thailand. Your team (most likely the only one) that can converse well technically in English and Chinese"

Nobile Summit (Thailand) Co., Ltd.

Accounting Support for Complex Business Structures in Thailand

UnionSPACE helps BOI-promoted companies, export-only companies, branch offices and representative offices maintain organized accounting records, accurate monthly tax filings, cloud-based document storage and clear management reports. Our service is designed for foreign-owned, cross-border and regulated businesses that need reliable accounting support beyond ordinary bookkeeping.

We support businesses that need stronger documentation, audit-ready financial records, correct VAT and withholding tax filing, and better visibility over monthly financial performance.

Why Choose UnionSPACE for Specialized Accounting in Thailand

A dedicated accounting service for businesses that need stronger documentation, cleaner tax records, cloud-based reporting and compliance-ready financial information.

Multilingual accounting support team in Thailand

Multilingual Accounting Support

Our Thailand-based accounting team is supported by bookkeepers and client service executives who can communicate in English, Chinese, Russian, Burmese, Malay and Thai.

BOI accounting experience in Thailand

Experience with BOI Companies

We understand the accounting records, tax incentive tracking and supporting schedules required for companies promoted by the Board of Investment.

Export company accounting experience in Thailand

Experience with Export-Only Companies

We help export businesses maintain proper VAT treatment, export evidence, input VAT reconciliation and foreign-currency transaction records.

Cloud accounting software for Thai tax compliance

Cloud Accounting Software Included

Our package includes access to Thai Revenue Department-compliant cloud accounting software with onboarding support.

Real-time financial reporting for companies in Thailand

Real-Time Reporting

Management can access financial information, reports and accounting documents online, giving your team better visibility over business performance.

Dedicated account manager for accounting clients in Thailand

Dedicated Account Manager

Your company will be supported by a dedicated account manager who coordinates document collection, monthly closing, tax filing and client communication.

Specialized accounting requirements for regulated companies in Thailand

Why Specialized Accounting Is Required

BOI companies, export-only companies, branch offices and representative offices cannot be managed in the same way as ordinary trading or service companies.

Their accounting records must be structured carefully to reflect their regulatory status, tax treatment, permitted activities and reporting obligations.

  • Accounting and tax filing requirements differ from ordinary companies
  • Record keeping must follow specific regulatory and tax requirements
  • Supporting documents must be maintained for Revenue Department, BOI and Foreign Business License-related reviews
  • Transactions may be subject to closer monitoring by Thai authorities

Specialized Accounting and Tax Filing Requirements in Thailand

BOI companies, export-only businesses, branch offices and representative offices require different accounting treatment, documentation controls and reporting discipline.

BOI Companies

BOI-promoted companies must maintain accounting records that clearly support their promoted activities and tax privileges.

  • Separate accounting records for BOI and non-BOI activities
  • Correct allocation of shared income, costs and expenses
  • Accurate tracking of BOI tax incentives and exempt income
  • BOI corporate income tax exemption filing through e-Tax within the required 120-day period
  • Supporting schedules for BOI compliance reviews and tax inspections

Branch Offices and Representative Offices

Branch and representative offices are subject to different accounting and tax considerations from ordinary Thai limited companies.

  • Branch office accounting records must clearly reflect Thailand-sourced income and expenses
  • Branch office profit remittance may be subject to additional 10% profit remittance tax
  • Representative offices must prove that activities are non-revenue-generating
  • Funding from the overseas head office must be properly recorded and reconciled
  • Local operating expenses must be documented clearly and consistently

Export-Only Companies

Export-focused businesses require strong accounting controls to support VAT treatment, refund claims and cross-border transaction reporting.

  • Export sales must be treated as 0% VAT sales, not VAT-exempt sales
  • Export evidence must be maintained to support the 0% VAT position
  • Input VAT refund claims require strong reconciliation and audit support
  • Foreign-currency revenue must be translated and reconciled correctly
  • Related-party export pricing may trigger transfer pricing compliance
Audit-Ready Accounting

Maintain a Clear Compliance Trail for Your Business in Thailand

Specialized entities require accounting records that can withstand review by management, auditors, the Revenue Department and relevant regulatory authorities.

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Audit-ready specialized accounting and compliance support in Thailand
4.9 Rating
Multilingual Team

Specialized Accounting Service Package in Thailand

Starting from THB 18,000 per month

Designed for BOI companies, export-only businesses, branch offices and representative offices that require monthly bookkeeping, tax filing, cloud accounting and compliance documentation support.

Cloud Accounting Software

Thai Revenue Department-compliant cloud accounting software, including setup and onboarding support.

Bank Reconciliation

Monthly bank reconciliation to support accurate closing and reliable financial reporting.

Document Collection and Verification

Collection, verification and matching of accounting documents, invoices, receipts and supporting records.

Bookkeeping and Data Entry

Accounting data entry and monthly bookkeeping for transactions, operations and business events.

Monthly Financial Reports

Preparation of monthly financial reports, including updated general ledger and trial balance.

Debtor and Creditor Aging Report

Monthly aging reports to help management monitor collections, payables and working capital.

Withholding Tax Certificates

Issuance of withholding tax certificates, up to 5 certificates per month.

Monthly PND 53 Filing

Preparation and filing of monthly withholding tax return for applicable supplier payments.

Monthly PP 30 VAT Filing

Monthly VAT return preparation and filing, including reconciliation support where applicable.

Cloud Document Storage

Secure cloud document storage for accounting records, tax documents and supporting schedules.

Real-Time Financial Access

Online access to accounting records and reports so management can review financial data anytime.

Dedicated Account Manager

Client support available in English, Chinese, Burmese, Russian and Thai.

BOI accounting services in Thailand for promoted and non-promoted activities

Accounting for BOI and Non-BOI Activities

BOI-promoted businesses often require separate treatment for promoted and non-promoted business activities. We help structure your accounting records to support clearer reporting, tax incentive tracking and review readiness.

Export company accounting and VAT reconciliation in Thailand

Export VAT and Input VAT Reconciliation

Export-only companies need accurate VAT classification and well-maintained export evidence. We support proper 0% VAT treatment, input VAT reconciliation and audit-ready documentation.

Branch office and representative office accounting in Thailand

Branch and Representative Office Reporting

Branch offices and representative offices must maintain accounting records that clearly reflect their permitted activities, funding sources, expenses and tax position in Thailand.

How to Get Started

A structured onboarding process for companies with specialized accounting requirements.

Discovery Call

Speak with our accounting specialist so we can understand your company structure, regulatory status, transaction flow and reporting requirements.

Compliance Review

We review the accounting and tax filing requirements relevant to your BOI, export-only, branch office or representative office structure.

Tailored Service Proposal

You receive a service proposal designed around your monthly accounting volume, tax filing needs, reporting requirements and document workflow.

Cloud Accounting Setup

We assist with onboarding, cloud accounting software setup and document collection procedures to support efficient monthly closing.

Monthly Closing and Filing

Our team handles monthly bookkeeping, reconciliation, management reporting and tax filing according to your company’s compliance requirements.

Whether your company is BOI-promoted, export-focused, operating as a branch office or registered as a representative office, UnionSPACE can help you maintain clear, compliant and management-ready accounts.

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Why Businesses Choose UnionSPACE:

A Multilingual Professional Support Team

UnionSPACE multilingual accounting and business support team in Thailand
Multilingual Team
We speak over 6 languages
UnionSPACE Google rating and client reviews

We provide structured, responsive and compliance-focused accounting support for businesses operating in Thailand.

With more than 8 years experience providing corporate and accounting support services, we understand that regulated and cross-border businesses require accuracy, consistency and clear communication.

Our role is to help you maintain reliable records, meet filing requirements and access financial information that supports better management decisions.

8+
Years Experience
8,000+
Business Clients
425
Team Members Globally

Don't just take our word for it!

Here’s what our clients say about us:

UnionSPACE English speaking accounting team is one of the best thing i found in Thailand :) Havve tried so many accounting firm to help out with our company compliances and each and everyone of them failed massively.

Saul Goodman

Ceo & Founder

I love UnionSPACE Cloud Accounting Software - that's included in our subscription. It's like we got 2 services for the price of 1 and it also allow us to review their work anytime.

Sara Wilsson

Entrepreneur

The way they explain my responsibilities during the on-boarding process makes work alot easier and smoother for both parties. Initially I felt it was an overkill but later realize it was indeed beneficial and necessary for all parties.

Jena Karlis

Store Owner

Like it or not, accounting is a pain and unionspace made it bearable and do-able even here in Thailand. Thank you

Matt Brandon

Freelancer

As Thailand tighten their grip with tax collection, having a professional accounting company is important. Unionspace made that right.

John Larson

Entrepreneur

Frequently Asked Questions

Answers to common questions about specialized accounting services for BOI companies, export-only companies, branch offices and representative offices in Thailand.

Who is this specialized accounting service designed for?

This service is designed for BOI-promoted companies, export-only businesses, branch offices and representative offices in Thailand that require more structured accounting, documentation and tax filing support than ordinary companies.

Why do BOI companies require specialized accounting?

BOI companies may need to separate BOI and non-BOI accounting records, allocate shared income and expenses correctly, track tax incentives and prepare supporting schedules for tax exemption filing and regulatory review.

How is accounting for export-only companies different?

Export-only companies must ensure export sales are treated correctly as 0% VAT sales, maintain export evidence, reconcile input VAT claims and properly translate and reconcile foreign-currency revenue.

Can UnionSPACE support branch offices and representative offices?

Yes. We support branch offices and representative offices with accounting records, expense tracking, head office funding reconciliation and tax filing considerations relevant to their permitted activities in Thailand.

Does the package include cloud accounting software?

Yes. Our specialized accounting package includes Thai Revenue Department-compliant cloud accounting software, onboarding support, real-time access to financial data and cloud document storage.

What monthly tax filings are included?

The package includes monthly PND 53 withholding tax filing and monthly PP 30 VAT filing. Additional filings may be quoted separately depending on your company’s specific requirements.

What is the starting price?

UnionSPACE specialized accounting packages start from THB 18,000 per month. The final service fee depends on transaction volume, reporting complexity, tax filing scope and the level of specialized accounting support required.

How do we get started?

You can schedule a discovery call with our team. We will review your company structure, current accounting process, monthly transaction volume and compliance needs before preparing a tailored service proposal.