Everhour connects billable time to invoice workflows, while Thailand VAT invoices require specific tax fields and presentation.
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Use invoice software for Thailand when you need a finished invoice that supports local VAT expectations, client approval, and bookkeeping handoff. VAT-registered businesses need stricter output than a plain request for payment. Thailand uses value added tax on goods, services, and imports, and VAT registration generally applies once annual turnover exceeds THB 1.8 million.
A VAT registrant must issue a tax invoice and copy for every sale of goods or service provision at the time VAT liability occurs, provide it to the customer, and keep the copy. The invoice should make the transaction easy to verify: seller, buyer, date, serial number, item details, value, and VAT amount.
A full Thai VAT tax invoice must show the words "tax invoice," the issuer's name, address, and taxpayer identification number, plus the buyer's name and address. It also needs a serial number, issue date, description or type of goods or services, quantity, value, VAT amount shown separately, and any other particulars prescribed by the Director-General.
The Revenue Department states the current general VAT rate is 7%, while the Revenue Code sets a 10% rate that may be reduced by Royal Decree. Treat the VAT line as its own invoice element, not a note inside the description. The buyer needs to see the value before VAT and the VAT amount as separate figures.
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. A bilingual or foreign-currency invoice needs care because the tax invoice rules do not automatically accept every client-facing format.
Foreign-currency tax bases must be converted to Thai currency. The rule uses Thai money received if sold in the same tax-liability month, otherwise the Bank of Thailand average selling rate on the last working day of that month. Imports use the Customs Department rate. Software should preserve the conversion basis alongside the invoice record.
A free invoice form is enough for a single straightforward invoice when you already know the buyer details, TIN, VAT treatment, currency, and payment terms. Thailand's statutory VAT tax-invoice particulars list the issue date, but they do not list a due date or payment terms. Those terms usually come from the agreement.
A managed workflow fits ongoing client work better. Tracked billable time, non-billable exclusions, rates, expenses, invoice status, and accounting export need one system of record. Everhour can separate billable and non-billable time at the project and task level before the invoice is prepared, which reduces cleanup before client billing.
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 value added tax as its indirect tax on the supply of goods, provision of services, and imports. For VAT-registered businesses, the invoice is a VAT tax invoice, not a generic receipt. The Revenue Department states 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 include the words "tax invoice," issuer name, issuer address, issuer taxpayer identification number, buyer name and address, serial number, issue date, item description or service type, quantity, value, and VAT amount separated from the value. The issuer's taxpayer identification number is a required field.
A Thai VAT tax invoice must use Thai currency unless the VAT registrant has approval from the Director-General to use a foreign currency. If the VAT tax base is expressed in foreign currency, it must be converted to Thai baht under the Revenue Department conversion rules. Keep the rate source with the invoice record.
Payment terms can appear on a Thailand invoice, but the statutory VAT tax-invoice particulars list the issue date and do not list a payment due date or payment terms. The payment deadline normally comes from the contract, purchase order, statement of work, or buyer policy. Add it for collection clarity without treating it as a VAT-required field.
Mixing the VAT amount into the service description creates review problems because a full Thai VAT tax invoice must separate the VAT amount from the value of goods or services. Another common mistake is issuing a client-friendly foreign-language invoice without approval for foreign language or currency use when the document is meant to serve as the tax invoice.
Everhour lets admins set project billing status, mark specific tasks as non-billable, use custom task rates, set member-rate exceptions, and report billable time, non-billable time, billable amount, and cost. That structure helps keep internal work out of the amount billed to a client.
Everhour Billing & Invoicing turns uninvoiced billable time and expenses into client invoices, then exports invoices to QuickBooks Online, Xero, or FreshBooks. Exported invoice status, number, issue date, and amount sync back to Everhour so billing reports stay connected to accounting records.
Track approved billable work before invoice prep starts. Everhour keeps billable and non-billable time clear, so client invoices are built from cleaner records and fewer manual corrections.
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