Freelancer guide

Invoicing & tax for a Content Writer in Thailand

Writing articles, content, and copy for brands is usually withheld at 3% as a service fee when the client is a company.

By the BillsOS team · Updated 8 Jun 2026

A worked example

Say you are a Content Writer invoicing a corporate client ฿12,000.00 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)฿12,000.00
Total invoiced฿12,000.00
Less withholding tax 3%-฿360.00
Net the client pays (QR amount)฿11,640.00

The client withholds ฿360.00 and transfers you ฿11,640.00, 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

Several small pieces for the same client in a month that total ฿1,000 or more trigger the client’s duty to withhold 3% and issue a 50 Tawi.

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

Tools & guides for this

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.

Start invoicing as a Content Writer — free →

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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.