Last updated: 19 July 2026

A Thai company does not become VAT registered automatically when it is incorporated. In general, a business supplying goods or services subject to Thai VAT must register when its annual taxable turnover exceeds THB 1.8 million. An eligible business below the threshold may choose to register earlier, but that decision should be made with its pricing, customers, expenses and monthly compliance obligations in mind.

The first question is therefore not simply whether the company has been registered. It is whether the proposed activity falls within VAT, whether an exemption or another tax regime applies, and when the relevant turnover threshold will be reached.

If the company intends to sponsor a foreign director or employee for an ordinary work permit, the VAT registration date may need to be brought forward even when turnover remains below THB 1.8 million. Employer document sets may require VAT registration evidence and proof of an actual workplace. This is a separate work authorisation planning issue and does not change the statutory VAT turnover threshold.

What Is VAT Registration for a Thai Company?

VAT registration places a company within Thailand's value added tax system. A registered business generally charges output VAT on taxable supplies, may claim eligible input VAT supported by proper tax invoices, and accounts for the difference in its monthly VAT return.

This is different from the company's legal registration and its corporate income tax position. Treating these as one process can lead to the wrong registration date, unsuitable invoices or an office address that is not ready for Revenue Department review.

When Must a Thai Company Register for VAT?

A company carrying on regular sales of goods or provision of services in Thailand is generally required to register when its annual turnover from activities subject to VAT exceeds THB 1.8 million. Once the threshold is exceeded, the application is generally due within 30 days.

The threshold is not a profit test. Expenses, salaries, rent and losses do not reduce turnover for this purpose. A company can therefore have little or no accounting profit and still have a VAT registration obligation.

Classify the activity before applying the threshold

Not every receipt should be placed into one total without analysis. Some supplies are exempt from VAT, some may be subject to Specific Business Tax, and qualifying exports or cross-border services may be zero rated. A company with mixed activities should classify each revenue stream before deciding whether and when registration is required.

This distinction is particularly relevant where a business combines consulting with regulated professional work, sells both domestic and exported goods, receives rental income, operates several branches or earns income that may fall under a separate tax treatment.

Should a Company Register Voluntarily Before Reaching the Threshold?

Voluntary VAT registration may be sensible for an eligible company, but it is not automatically the better choice. The decision should reflect how the business prices its services, who its customers are, what VAT-bearing expenses it expects and whether its accounting system is ready.

Work permit plans can change the timing

For a Thai company using TILA LEGAL to sponsor a foreign director or employee through the ordinary work permit route, VAT registration must generally be completed before the work permit application, even if taxable turnover remains below THB 1.8 million. Employer documentation may require VAT registration evidence, commonly the relevant Form P.P.01 or Form P.P.20, together with evidence that the company is genuinely operating from the stated workplace.

This does not mean that every company below the threshold has a tax law duty to register. It means that a company with a work permit plan may need to elect into VAT earlier so that its corporate, tax and employment documentation follows a workable sequence. BOI promoted companies, special work authorisation categories and other routes may have different requirements, so the route should be confirmed before registration.

Voluntary registration may be commercially useful where:

• customers are VAT registered businesses that expect a valid tax invoice;
• the company expects substantial eligible input VAT on equipment, inventory, rent or professional services;
• taxable turnover is likely to exceed the threshold soon;
• the company will make qualifying zero rated supplies and can maintain the required evidence; or
• contracts or procurement requirements make VAT registration commercially relevant.

Waiting may be more appropriate where:

• the company remains clearly below the threshold and mainly serves consumers who cannot recover VAT;
• the additional VAT would reduce margin unless prices can be adjusted;
• input VAT is limited or largely non-creditable;
• the activity may be exempt or subject to another tax treatment; or
• the premises, invoicing and monthly accounting processes are not yet ready, and there is no current work permit or other administrative reason to register early.

Once registered, a company should expect continuing monthly obligations. Voluntary registration should therefore be treated as an operating decision, not merely as an administrative certificate. Cancellation is not available simply on demand and remains subject to statutory conditions and minimum registration periods.

What VAT Rate Applies in Thailand?

As at 19 July 2026, the effective general VAT rate is 7%. The Revenue Code provides a general rate of 10%, while a reduced rate currently applies under Royal Decree No. 799 through 30 September 2026.

A registered company generally calculates its monthly VAT position as follows:

VAT payable = output VAT on taxable sales minus eligible input VAT on business purchases

Input VAT is not recoverable merely because an expense was paid by the company. The purchase must relate to the business, the tax invoice must satisfy the applicable requirements, and the input VAT must not fall within a disallowed category. The treatment of expenses incurred before registration also depends on the timing, nature of the expense and supporting documents.

Zero Rated and VAT Exempt Are Not the Same

A 0% VAT supply remains within the VAT system. An exempt supply is outside the charge in a different way. The distinction can materially affect registration, invoicing and the ability to claim input VAT.

What Must Be Ready Before a VAT Application?

A VAT application is not only a form filing. The Revenue Department considers the company, its activity and its establishment. The precise supporting evidence varies with the applicant, the premises, the activity, any branches and the filing route.

In practical terms, the company should be ready to establish:

• its current corporate particulars and authorised representatives;
• the nature of the goods or services and the expected start of operations;
• the location of the head office and each relevant branch;
• its lawful right to occupy and use the premises for the proposed business;
• the relationship between the registered address and the actual operating location;
• premises details, a location map and photographs showing the exterior, interior and relevant building or room identification;
• a clearly visible company name sign at the physical premises;
• relevant contracts, licences, investment evidence or preparatory expenditure where applicable; and
• an accounting and invoicing process that can operate from the VAT effective date.

The application may be submitted through the Revenue Department's current online VAT and Specific Business Tax system or through the competent Revenue Office, subject to the applicant's circumstances and the system requirements in force at the time. The authority may request additional information or inspect the premises before completing its consideration.

For TILA LEGAL's VAT registration support, the applicant must have a genuine physical office. A mailbox, mail forwarding service or correspondence-only address is not sufficient. The office evidence should be prepared consistently across the company registration, lease or consent documents, VAT application and any later work permit application.

Can a Virtual Office Be Used for VAT Registration?

An address that can be used to register a company with the Department of Business Development is not automatically suitable for VAT. For VAT purposes, the Revenue Department may examine whether the stated location is a genuine establishment and whether the company can provide adequate occupation and premises evidence.

A correspondence-only virtual address is therefore not suitable for TILA LEGAL's VAT registration support. The company must be able to show an actual physical office, lawful occupation, usable working space, exterior and interior photographs and a clearly visible company name sign. A serviced office, shared office or other flexible arrangement should be reviewed on its facts, including the permitted use, documents available, actual business presence and inspection readiness. Acceptance remains subject to the Revenue Department.

For a fuller explanation of the distinction between a registered address and an operational establishment, see our guide to using a virtual office for company registration in Bangkok.

How Does the VAT Registration Process Usually Work?

The appropriate sequence is to confirm the tax position first, then prepare the company and premises evidence around that conclusion. A practical process commonly involves:

1. Classifying the activity. Identify taxable, zero rated, exempt and potentially Specific Business Tax income streams.
2. Determining the registration basis. Confirm whether registration is compulsory, voluntary or premature.
3. Checking the company and premises. Align the registered particulars, actual activity, lease or consent arrangements and branch information.
4. Preparing the application evidence. Assemble the relevant corporate, identity, business and establishment documents for the selected filing route.
5. Submitting and responding to review. File Form P.P.01 and address any request for clarification, further evidence or a premises inspection.
6. Implementing VAT operations. Confirm the registration effective date, set up compliant invoices and reports, and begin the monthly filing cycle.

Processing time depends on document completeness, the nature of the premises, the responsible Revenue Office and whether further verification is required. Company incorporation, registered capital or the use of a professional adviser cannot guarantee approval or a fixed completion date.

What Changes After the Company Is VAT Registered?

The main operational change is that VAT becomes part of the company's monthly accounting and invoicing process. A registered company generally needs to:

• issue compliant tax invoices for taxable supplies at the correct time;
• maintain output tax and input tax reports, together with any stock records required for its business;
• file Form P.P.30 for each calendar month and pay any VAT due, generally within 15 days after the end of the month;
• file monthly even where there were no reportable sales or purchases;
• retain tax invoices and supporting records in an organised form;
• display the Form P.P.20 certificate at the registered establishment as required;
• update the Revenue Department when registered particulars or establishments change; and
• consider separate VAT remittance obligations, commonly Form P.P.36, when paying for certain services supplied from abroad and used in Thailand.

Where the company has more than one establishment, each location is generally registered and monthly filing is normally made by establishment unless consolidated filing has been approved. Branch planning should therefore be addressed before invoices and accounting records begin to circulate.

For continuing bookkeeping, VAT reports and tax return support, review our accounting services for companies in Bangkok. This VAT registration guide does not replace the separate work needed to maintain the company's monthly accounts.

Business Decisions to Make Before Registering

The legal eligibility question is only one part of the decision. VAT affects customer pricing, cash flow, contracts and internal controls. A company should resolve the following points before choosing an early registration date:

Will prices include VAT or will VAT be added?

For business customers that can claim input VAT, adding VAT may be commercially neutral. For consumers or exempt customers, VAT increases the final cost unless the company absorbs it. Contracts, quotations and online pricing should use consistent language.

Are supplier invoices capable of supporting an input tax claim?

A payment receipt or ordinary invoice is not always a valid VAT tax invoice. The purchasing process should capture the company's correct legal name, registered establishment, tax identification number and branch details from the start.

Will the company import goods or purchase overseas services?

Import VAT is generally collected by the Customs Department. Certain services supplied from outside Thailand and used in Thailand can create a separate VAT remittance obligation for the Thai recipient. These rules should be considered alongside withholding tax and contract terms.

Is a refund likely?

A business with substantial input VAT or zero rated sales may build up a VAT credit. A refund may be available subject to the applicable rules, documentation and Revenue Department review. A refund should not be treated as automatic or used as the sole basis for cash flow planning.

VAT Registration Readiness Checklist

Before applying, the directors should be able to answer these questions:

• What goods or services will the company supply, and where will they be supplied and used?
• Which revenue streams are taxable, zero rated, exempt or potentially subject to Specific Business Tax?
• Has taxable turnover started, and when is it expected to exceed THB 1.8 million?
• Are the customers mainly businesses, consumers or overseas clients?
• Can VAT be added to the agreed price under the customer contracts?
• What material VAT-bearing costs will the company incur?
• Does the company have a genuine establishment with adequate occupation evidence?
• Can the company provide current exterior and interior photographs showing its company name sign and identifiable location?
• Will there be branches, warehouses, shops or other operating locations?
• Will the company sponsor a foreign director or employee, and which work authorisation route is intended?
• Are invoice templates, accounting records and monthly filing responsibilities ready?
• Does the activity require another licence or foreign business approval before operations begin?

If several answers remain uncertain, it is usually better to review the activity, address and planned transactions together before fixing the VAT registration date.

Common VAT Registration Mistakes

• Assuming every company must register immediately. The activity, exemption status and taxable turnover determine the position.
• Waiting until after the threshold has been exceeded to begin preparation. The 30 day period can be difficult if the premises or documents are not ready.
• Using profit instead of taxable turnover. A loss-making company can still exceed the VAT threshold.
• Treating all export or foreign customer income as zero rated. The conditions and evidence differ for goods and services.
• Choosing an address only for company registration convenience. The address may not support VAT registration, licensing or work authorisation later.
• Leaving VAT until after beginning the work permit process. For an ordinary company-sponsored application, VAT evidence and a genuine workplace may need to be ready before the employer document set can be completed.
• Charging VAT before confirming registered status and the effective date. An application in preparation does not by itself authorise the company to present an invoice as a VAT tax invoice.
• Registering voluntarily without preparing monthly compliance. Nil activity does not generally remove the monthly filing duty.
• Assuming every purchase VAT amount is recoverable. Eligibility depends on the expense, business use, tax invoice and statutory restrictions.

How VAT Planning Fits with Company Registration

VAT should be considered before incorporation where it affects the proposed activity, registered office, customer contracts, branch structure or launch date. It should not, however, replace the broader analysis of foreign ownership, licences, governance, capital and work authorisation.

Where an ordinary work permit is planned, a practical sequence is commonly to establish the company, secure and document the physical office, complete the required VAT registration, prepare the employer evidence and then proceed with the relevant visa and work permit steps. The correct sequence depends on the applicant, employer and work authorisation route.

If the company has not yet been formed, our page on planning and registering a company in Thailand explains the wider corporate process. This article remains focused on the separate VAT decision and the operational consequences after registration.

Frequently Asked Questions

Does every Thai limited company need to register for VAT?

No. Registration generally depends on the nature of the activity and whether annual taxable turnover exceeds THB 1.8 million. An eligible company below the threshold may register voluntarily, while exempt or Specific Business Tax activities require separate analysis.

Is the THB 1.8 million threshold based on profit?

No. It is generally based on annual turnover from relevant taxable supplies, before deducting business expenses. Total accounting income should not be used without first classifying the company's revenue streams.

Can a new company register for VAT before it has revenue?

It may be possible where the company is eligible and can demonstrate genuine preparation for a taxable business. The proposed activity, premises, expected start date, contracts and preparatory expenditure may be relevant. Acceptance remains subject to the Revenue Department.

What is a Form P.P.20?

Form P.P.20 is the VAT registration certificate issued for a registered establishment. It evidences VAT status and should be displayed at the relevant establishment as required.

Can a company use a virtual office for VAT registration?

A correspondence-only virtual address is not suitable for TILA LEGAL's VAT registration support. Other serviced or shared office arrangements may be considered depending on actual use, occupation rights, available documents and inspection readiness. The Revenue Department decides whether the evidence is acceptable.

Must a VAT registered company file when it had no sales?

Generally, yes. The VAT tax period is monthly, so a Form P.P.30 return is ordinarily required for each month even if the company has no VAT payable or no transactions.

Are services provided to a foreign client always subject to 0% VAT?

No. Zero rating depends on where and how the service is performed and used, together with the prescribed conditions and evidence. A foreign customer or foreign currency payment alone does not establish the 0% treatment.

Must a company register for VAT before sponsoring a work permit if turnover is below THB 1.8 million?

For TILA LEGAL's ordinary company-sponsored work permit process, generally yes. VAT registration evidence and proof of a genuine workplace may be required as part of employer readiness, so the company should plan to enter VAT before the work permit application even if it has not reached the compulsory turnover threshold. This is separate from the tax law threshold, and BOI or other special routes may follow different requirements.

Does VAT registration guarantee a bank account, business licence, visa or work permit?

No. VAT registration may form part of the employer evidence for an ordinary work permit application, but it does not by itself establish eligibility or guarantee approval. Bank accounts, business licences, visas and work permits have separate requirements and remain subject to the relevant bank or authority.

How long does VAT registration take?

There is no completion period that should be promised for every application. Timing depends on the filing route, document completeness, premises evidence, the responsible Revenue Office and whether further information or an inspection is required.

Information to Prepare for a VAT Review

A focused review normally begins with a short description of the goods or services, intended customers, expected turnover, date trading started or will start, company status, physical operating address, branches and any existing contracts or Revenue Department documents. If the company will sponsor a foreign director or employee, include the intended work permit route and timing. Overseas customers, imports and foreign service providers should also be mentioned where relevant.

You may provide only the information readily available at the initial stage. The purpose is to identify the issues that need to be checked before recommending whether the company should register now, prepare for compulsory registration or remain outside VAT for the time being.

About TILA LEGAL

TILA LEGAL is a private law firm in Thailand. We provide legal advisory, corporate structuring, document preparation and related professional services.

For more than 20 years, our firm has advised foreign investors, business owners and individuals on legal matters in Thailand. Our work includes reviewing how a proposed activity, company structure and operating premises affect VAT registration, preparing the relevant documents and coordinating the required legal steps.

TILA LEGAL is not affiliated with any government authority and does not act on behalf of any government agency. Tax registrations, licences and other government approvals remain subject to the consideration of the relevant authorities.