Thailand VAT Registration & Corporate Bank Account

VAT registration and the corporate bank account are one workstream, not two

Newly incorporated Thai companies routinely treat tax registration and banking as separate errands, then discover that each one is waiting on the other. The bank wants to see a company that is demonstrably operating — a real address, a signed lease, a director who can attend in person — while the Revenue Department wants evidence that the address exists and that the business genuinely intends to supply goods or services. Running the two files in parallel, with one consistent evidence pack, removes most of the friction.

Under the Revenue Code, VAT registration (Form Phor.Phor.01) is mandatory once annual taxable turnover exceeds 1.8 million baht. Below that threshold registration is voluntary, and it is a genuine decision rather than a formality: registering lets you reclaim input VAT and is often required by corporate customers and by the Department of Employment when work permits are in play, but it also commits the company to monthly Phor.Phor.30 filings whether or not there is any revenue that month.

The practical sequencing we use is: company registration and affidavit issued at the DBD, lease and address evidence assembled, VAT application filed with photographs and a map, then the bank account opened with the Phor.Phor.20 certificate in hand. Banks are markedly faster once the VAT certificate exists, because it is independent state confirmation that the company is real.

What each authority actually asks for

How we run the combined file

1. Address and lease review first: The single biggest cause of rejection is an address that cannot support a business: a condominium whose juristic person forbids commercial use, or a lease naming a different party. We check the lease, the house registration book and the owner's consent before anything is filed.
2. Signage and photography: The company sign must be installed and legible before photographs are taken. Officers compare the photographs against the map and, in a meaningful minority of cases, visit unannounced.
3. Phor.Phor.01 filing: We file at the Area Revenue Branch Office covering the registered address, with the activity description drafted to match the objectives in the memorandum rather than a generic catch-all.
4. Phor.Phor.20 collection: The VAT certificate is the document banks, customers and the Department of Employment all ask for. It is displayed at the office as a matter of law.
5. Bank appointment and signatory design: Authorised directors attend in person. We prepare the board resolution so signing authority, internet-banking rights and cheque limits are settled before the appointment rather than improvised at the counter.
6. Filing calendar handover: Monthly Phor.Phor.30 by the 15th, withholding tax returns by the 7th, and social security by the 15th. We hand over a calendar rather than leaving the client to discover the deadlines through penalty notices.

Points that decide whether a foreign-owned company gets banked

• Foreign directors are expected to attend in person with valid immigration status; a passport with a tourist stamp weakens the file considerably.
• A company with no Thai signatory faces additional internal review at most banks, and processing time roughly doubles.
• Beneficial-ownership questions under AML rules are asked in writing and answered on the record — inconsistent answers between the VAT file and the bank file cause re-review.
• Internet banking, corporate cards and foreign-currency accounts are separate approvals, each with its own form; requesting them at opening avoids a second attendance.
• Some banks require the office to be visited before internet banking is enabled, which is a further reason to have signage in place early.
• Where the company is BOI-promoted, the promotion certificate materially shortens both queues and should be presented at the first appointment.

Common mistakes and how we avoid them

More questions we are asked

Is VAT registration compulsory for a new company?

Only once annual taxable turnover exceeds 1.8 million baht. Below that it is voluntary, and worth registering when you need to reclaim input VAT, invoice corporate customers, or support work-permit applications.

How long does the whole sequence take?

Where the address and lease are clean, VAT registration is typically completed within a small number of working days at the area office, and the bank appointment follows once the certificate is issued. An unclear address is what turns weeks into months.

Can the company open a bank account before VAT registration?

Yes in principle, but most banks move faster with a Phor.Phor.20 in the file because it independently confirms the company is operating at the stated address.

What happens if we file Phor.Phor.30 late?

Surcharge and penalty accrue from the due date, and a pattern of late filing invites closer scrutiny at any subsequent registration or refund claim.

Do we need a Thai director to open an account?

Not legally, but banks apply their own risk policies. A company with only foreign signatories should expect additional internal review and a longer timeline.

Must the VAT certificate be displayed?

Yes. The Phor.Phor.20 is displayed at the place of business, and officers do check it during site visits.