Thailand VAT invoices need specific Revenue Department fields. Everhour turns approved billable work into invoice-ready records.
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Use this page to prepare an invoice for work billed to a Thai client or issued by a Thailand-based business. The finished invoice should identify the seller, buyer, invoice number, issue date, services or goods, price, VAT treatment, total amount, and payment instructions. If the issuer is VAT-registered, the document functions as a Thai VAT tax invoice and needs the required tax-invoice particulars.
Thailand uses value added tax on supplies of goods, services, and imports. A person or entity that regularly supplies goods or provides services in Thailand is subject to VAT when annual turnover exceeds THB 1.8 million. The Revenue Department states that the current general VAT rate is 7%, while the Revenue Code sets a 10% rate that may be reduced by Royal Decree.
A full Thai VAT tax invoice must show the words "tax invoice," issuer name, issuer address, issuer taxpayer identification number, buyer name, buyer address, serial number, issue date, description or type of goods or services, quantity, value, and the VAT amount separated from the value. Add any project reference, purchase order, and contact details after the required tax fields.
The issuer's taxpayer identification number is a required field. Thai tax-identification rules require taxpayers or income payers to obtain and use a taxpayer identification number unless an individual may use a personal identification number instead. Tax-invoice particulars must be in Thai language, Thai currency, and Thai or Arabic numerals unless the VAT registrant has approval from the Director-General to use a foreign language or currency.
Thai VAT invoices should use Thai baht unless the VAT registrant has approval to use a foreign currency. If the VAT tax base is expressed in foreign currency, it must be converted to Thai currency using the Thai money received if sold in the same tax-liability month. Otherwise, use the Bank of Thailand average selling rate on the last working day of that month.
Payment terms still belong on practical client invoices, even though Thailand's statutory VAT tax-invoice particulars list the issue date and do not list a payment due date or payment terms. Put the due date, bank transfer instructions, late-payment terms, and contact email in a separate payment section so the commercial terms do not obscure the tax-invoice fields.
A one-off invoice generator is enough when you need a single Thailand invoice, already know the client details, and can confirm the VAT treatment before sending. It works well for fixed-fee services, one-time project work, and clean line items where the billing amount does not depend on multiple people, tasks, or time periods.
A managed workflow fits recurring client work. Everhour Billing & Invoicing converts tracked billable time and expenses into invoices, calculates invoice amounts from rates while excluding non-billable tasks, supports client settings and invoice customization, and exports invoices to QuickBooks Online, Xero, or FreshBooks with status sync back to Everhour.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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Thailand uses VAT as its indirect tax on the supply of goods, provision of services, and imports. A person or entity that regularly supplies goods or provides services in Thailand is subject to VAT when annual turnover exceeds THB 1.8 million. The Revenue Department states that the current general VAT rate is 7%.
A full Thai VAT tax invoice must show the words "tax invoice," issuer name, issuer address, issuer taxpayer identification number, buyer name, buyer address, serial number, issue date, goods or services description, quantity, value, and VAT amount separated from value. The Revenue Department can prescribe additional particulars.
Thai tax-invoice particulars must be in Thai language, Thai currency, and Thai or Arabic numerals unless the VAT registrant has approval from the Director-General to use a foreign language or currency. If the VAT tax base is expressed in foreign currency, it must be converted to Thai baht under the applicable conversion rule.
A full Thai VAT tax invoice must clearly separate the VAT amount from the value of the goods or services. Do not hide VAT inside the line-item total when a full tax invoice is required. The VAT amount should be visible in the invoice summary or per-line calculation, depending on the invoice layout.
Thailand's statutory VAT tax-invoice particulars list the issue date but do not list a payment due date or payment terms. Add payment terms because clients need them to process payment, but treat them as contractual terms rather than required VAT tax-invoice particulars.
Everhour Billing & Invoicing converts tracked billable time and expenses into invoices, calculates invoice amounts from rates, and excludes non-billable tasks. Teams can use client settings, taxes, discounts, payment terms, and invoice customization before exporting invoices to QuickBooks Online, Xero, or FreshBooks.
Everhour marks time as invoiced after it has been included in an invoice, so the same billable work does not appear again in future uninvoiced totals. Invoice status, number, issue date, and amount can sync back from supported accounting exports.
Create one-off Thailand invoices when the job is simple. For recurring billable work, Everhour connects tracked time, expenses, rates, invoice customization, and accounting exports into one billing workflow.
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