Accounting & Compliance

Accounting & Tax Filing Service (Thailand)

We provide full accounting, bookkeeping, payroll and tax filing services — ensuring accuracy, compliance and timely submissions to Thai authorities.

Who is it for / Suitable for

Businesses that require this service to operate legally and competitively in Thailand.

Foreign companies needing structured compliance support.

Entrepreneurs seeking proper approvals without delays or rejections.

Companies expanding into new regulated business activities.

Key Requirements

Thai registered company

Or foreign company submitting via authorized representative.

Supporting corporate documents

Affidavit, AOA, shareholder list, director details.

Registered business address

Required for government filings, inspections, or verification.

Clients need to provide the following information / documents

Document Name

Notarized

Company affidavit

Latest DBD-issued affidavit.

Director passports / IDs

Identification of responsible persons.

Power of Attorney

If the applicant authorizes a representative.

Yes (if signed overseas)

Activity-specific documents

Technical, procedural or compliance documentation as required.

Case-by-case

Average Processing Time

Varies by application

Dependent on government review, industry type, and document completeness.

Chat with us via WeChat

or

Chat with us via Line

What you would get when the application is complete

Official license / certificate

Issued by the relevant authority.

Compliance guidelines

Detailed instructions on maintaining validity.

Ongoing support options

Renewals, amendments, filings, or inspections.

On-going Compliance Requirements

To stay compliant with Thai regulations:

Maintain proper records

Accounting, reporting, and documentation retention.

Renew licenses on time

Following authority timelines and rules.

Comply with inspections

Allow site visits or audits when required.

Government Agencies Involved

Depending on the service:

DBD

Corporate filings and verification.

Revenue Department

Tax, VAT, and compliance reviews.

Industry-specific regulators

IP, trade, standards, licensing bodies, etc.

Thanks SiamBusinessLaw to helping us draft a strong agreement and help us see through the case until we have an absolute win case. Appreciate your patience and professionalism

Your law firm handles our case very well and professional. Your regular updates allow us a peace of mind an dmake us feel like we are cared for. Your professional advise gave us a peace of mind too.

Your Burmese team is legit. They gave us the attention and respect we have long missed. We appreciate your work to help us get started properly here in Thailand.

Thank you for assisting us with our case with the Thai Revenue Deparment. We are satisfied with the outcome and we think it is fair.

Your due diligence work for our M&A is done with utmost care and accuracy. It's rare to see such work done by a legal firm in Thailand.

Consult With Our Corporate Advisory Team

Our team is ready to guide you through the full process. Reach us on WeChat or WhatsApp.