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Invoice (ใบแจ้งหนี้) — free form, example and phone app

An invoice asks the customer to pay for work done or goods delivered. Download the blank Thai form free (same design as the app’s documents), or invoice from your phone with GlideQuote — bank details included — and send it by LINE.

⬇ Download the free form (PDF) Download on the App Store
A4 PDF in Thai, same design as the app’s documents · print and fill in by hand · Or make it on your phone — free plan, no card
Example made with the GlideQuote app (Pro) — Invoice
Example made with the GlideQuote app (Pro)
Blank form (free PDF) — Invoice
Blank form (free PDF)

What is an invoice?

An invoice (ใบแจ้งหนี้, sometimes called ใบวางบิล) tells the customer how much to pay, by when, and into which account.

If you are VAT-registered, the invoice can be issued as one set with the tax invoice. If you are not registered, your invoice must not be headed “ใบกำกับภาษี” (tax invoice).

What an invoice should include

On withholding tax: when a company or other juristic person pays you for services or hire of work under an agreement worth 1,000 baht or more (even if each instalment is smaller), it withholds 3% and gives you a withholding certificate (50 ทวิ). Source: Revenue Department
What GlideQuote does

Invoice from your phone with GlideQuote

  1. From the quote, or from scratch — an agreed quote becomes the invoice in one tap
  2. Payment details on the document — bank, account name, account number, and PromptPay QR (Pro)
  3. Send by LINE — share the PDF with the customer
  4. Record the payment — in full or in part, then issue the receipt

3% withholding tax PRO

Switch it on per invoice; the deduction and the net amount are shown clearly for company customers.

PromptPay QR on the invoice PRO

Your PromptPay number becomes a QR the customer can scan to pay, on invoices charged in baht.

Quote → invoice in one tap

Once the customer agrees, one tap turns the quote into an invoice with the same items, customer details and payment terms — no retyping.

Part payments and receipts

Record a part payment or the balance, then create the receipt PDF straight away.

Polite payment reminders

Home shows what is outstanding and overdue; Remind client gives you a ready message with the amount and your bank details to send by chat.

VAT 7% on every plan

VAT-registered? The app calculates 7% VAT separately from the value and uses the tax-invoice heading. Not registered? You get a clean invoice without VAT.

PRO = included in the Pro plan
Common questions
What is the difference between an invoice and a tax invoice?
An invoice is a request for payment that anyone can issue. A tax invoice is a tax document that only VAT-registered businesses may issue, and it must carry the items in section 86/4. Registered businesses may issue the invoice and tax invoice as one set.
Who deducts the 3% withholding tax?
The payer, when it is a company or other juristic person paying for services or hire of work under an agreement worth 1,000 baht or more; it then gives the payee a 50 ทวิ certificate. Your invoice should show the deduction and the net amount so the figures match.
What about 3% withholding tax and PromptPay?
Both are Pro features for Thai businesses: switch withholding tax on per invoice and the deduction and net amount are shown, and your PromptPay number becomes a scannable QR on every Pro invoice charged in baht. VAT 7% is included on every plan.
When does the app issue a “tax invoice”?
The app uses the ใบกำกับภาษี (tax invoice) heading only when you switch on VAT registration in Tax settings; with it off, the same invoice is headed ใบแจ้งหนี้. Switch it on only if you really are VAT-registered — issuing a tax invoice without registration is against the law.
What does GlideQuote cost?
There is a permanent Free plan: unlimited invoices and receipts, 3 quotes a month, with a small GlideQuote watermark on PDFs. Pro on the Thai App Store is ฿166 a month billed annually (฿1,990 a year) or ฿299 month to month, and the first month is free.
Other documents and trades
QuotationInvoiceAir-con techniciansContractors

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Last updated: 1 October 2026