Invoicing & tax for a Translator in Thailand
A Translator in Thailand invoices clients with a receipt or tax invoice; when the client is a company, the client withholds 3% tax on the fee (income type: Service / hire-of-work fees), transfers you the net, and hands you a 50 Tawi (50 ทวิ) withholding certificate as proof. Example: on a ฿15,000.00 fee, the client withholds ฿450.00 and you actually receive ฿14,550.00. You keep the 50 Tawi to credit that tax on your annual return. On your own sales invoice you are the payee — the client withholds and issues the 50 Tawi, not you.
Document translation and interpreting for company clients is a service fee withheld at 3%; translation billed to overseas clients can have different tax treatment.
By the BillsOS team · Updated 9 Jun 2026
A worked example
Say you are a Translator invoicing a corporate client ฿15,000.00 for your work. The income type is “Service / hire-of-work fees”, withheld at 3%. The figures below come straight from the BillsOS engine.
| Fee (before VAT) | ฿15,000.00 |
| Total invoiced | ฿15,000.00 |
| Less withholding tax 3% | -฿450.00 |
| Net the client pays (QR amount) | ฿14,550.00 |
The client withholds ฿450.00 and transfers you ฿14,550.00, handing you a 50 Tawi certificate as evidence.
Who withholds: On your own sales invoice you are the payee. Your client (the payer) is the one who withholds the tax and issues you the 50 Tawi — you do not issue it yourself.
What to watch for in this trade
A Thai juristic client withholds 3% and issues a 50 Tawi; overseas clients usually do not apply Thai withholding, but the income still goes on your annual return.
Real-world scenarios
Scenario 1
A translator interprets at an international seminar for a flat ฿15,000 day rate that bundles in Bangkok travel costs. The event organiser (a company) withholds 3% on the full ฿15,000, since no travel line was itemised separately in advance.
Scenario 2
Another job is a 3-month, ฿45,000 document-translation contract for a government department. The agency withholds 3% on every disbursement just like a private company would, but the payment process and 50 Tawi issuance take noticeably longer than the translator is used to with private clients.
The figures and details above are illustrative examples, not a Revenue Department ruling on your specific case.
Documents you’ll need
- Receipt — if not VAT-registered you issue a receipt (only VAT-registered persons issue tax invoices)
- Quotation and invoice — before the work and when you bill
- 50 Tawi — received from the client and kept for every job, to credit on your annual return
Frequently asked questions for this trade
Do overseas clients withhold Thai tax on my translation work?+
I take interpreting gigs at a flat day rate that bundles in travel/meal costs — what's the withholding base?+
I do translation work for a government agency — is the withholding different from a private company?+
Tools & guides for this
- Withholding tax & VAT calculator
- Free 50 Tawi generator
- Which documents a freelancer needs · Withholding tax rates
- Common Thai tax questions
Other freelance professions
- Invoicing & tax for a Video Editor
- Invoicing & tax for a Architect
- Invoicing & tax for a Graphic Designer
BillsOS issues invoices and receipts that compute the withholding for you, with an exact-amount PromptPay QR embedded so the client scans and pays straight into your own account.
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BillsOS only formats and computes documents for you. This is general information, not tax advice — please confirm with the Revenue Department or your accountant.