Quotation Template Thailand: What to Include, Is It Binding, and Can Clients Accept Online?

A quotation is not just a price table — it is the document that decides whether the deal closes. And most quotations in Thailand end the same way: a PDF sent for the client to look at, followed by silence. Nobody ever clicks "accept" on anything.

The familiar routine: build the quote in Excel or Canva, export it to PDF, send it over LINE, and get "let me think about it" in reply. This article covers the elements a quotation (ใบเสนอราคา) must contain, how long it stays valid, whether a quotation is a contract, how it differs from a purchase order and a tax invoice, and how to get clients to sign their acceptance online.

TL;DR: A good quotation needs: seller and buyer details (including tax ID numbers), a document number and date, itemized goods/services with quantities, unit prices and discounts, a clear statement of whether prices include 7% VAT, payment terms, and a price expiry date (typically 15–30 days). On its own, a quotation is not yet a contract — but once the client signs their acceptance, it can create binding obligations. Most free quotation tools today only export a PDF; the step that actually closes the deal is letting the client sign their acceptance online, inside the same document. (General information, not legal or tax advice.)

Key Takeaways

• A good quotation has 9 core elements, including a clearly stated price expiry date
• No law dictates how long a quotation stays valid, but 15–30 days is standard practice
• A quotation is not a contract on its own, but a signed client acceptance can create binding obligations
• Quotations, purchase orders, and tax invoices have different legal and tax statuses
• Most free tools stop at exporting a PDF — client acceptance signed via a single link is the step that actually closes the deal
• Online quote acceptance is legally recognized under the Electronic Transactions Act B.E. 2544 (2001)

What a Good Quotation Must Include

A complete quotation has 9 elements: seller details with tax ID, buyer details, document number and date, itemized goods/services with quantities and unit prices, discounts, a clear statement of whether 7% VAT is included, payment terms, a delivery timeline, and a price expiry date.

1. Seller details — company or business name, address, and tax ID number
2. Buyer details — name, address, and contact channel
3. Document number and date — for later reference
4. Itemized goods/services — with descriptions, quantities, and unit prices
5. Discounts — per line item and/or on the total (if any)
6. 7% VAT statement — make it unambiguous whether the price includes VAT or not
7. Payment terms — e.g. payment in full or in instalments
8. Delivery timeline — when the goods or services are expected to be delivered
9. Price expiry date — the element most quotations forget

How Long Is a Quotation Valid?

No law sets a mandatory validity period for quotations, but in practice 15–30 days is standard — and the expiry date should always be stated on the document itself, so you are protected if the cost of goods or services changes later.

Is a Quotation a Contract?

On its own, a quotation is not yet a contract — it is a commercial offer. But once the client signs their acceptance, or confirms with a purchase order, it can create a binding agreement.

There are cases discussed on public forums where a quotation that the client had signed was later interpreted as a hire-of-work contract — which can bring stamp duty consequences with it.

Cancelling after signature remains a grey area where damages may be involved. Review it with a legal advisor case by case rather than treating any answer as final.

Quotation vs Purchase Order vs Tax Invoice

The three documents have different statuses: a quotation is an offer, a purchase order is a confirmation that creates obligations, and a tax invoice is a tax document with its own dedicated regulatory system (e-Tax Invoice).

What Jabmue covers is the quotation and commercial agreement documents. It does not cover electronic tax invoices (e-Tax Invoice), which require registration with the Revenue Department and belong to specialized accounting systems.

From "Send the PDF and Wait" to "Client Signs in One Link"

The difference between a quotation left hanging and a deal that actually closes is how much friction sits in the acceptance step. A quotation that arrives with a signing link turns "let me think about it" into a decision.

Most free quotation tools on the market stop at exporting a PDF. The quote block in the Jabmue document editor calculates line totals (quantity × unit price), per-line and overall discounts, and tax, with columns you can arrange as needed. The total you see on screen is the same number in the PDF the client signs. The client opens the link, sees the quotation, and signs their acceptance on the spot — with a timestamped record of every action.

Is an Online-Signed Quotation Legally Valid?

Yes. Electronic acceptance of a quotation is recognized under the Electronic Transactions Act B.E. 2544 (2001). A signed acceptance carries the same weight as a conventionally signed agreement, with a recorded audit trail helping to strengthen the evidentiary weight.

Read the full guide to the legal validity of electronic signatures in Thailand

If the quotation involves confidential details you need to protect before disclosing the work, see the NDA template guide. And once the client accepts, the next document is usually a freelance service contract.

Frequently Asked Questions

What must a quotation include?

At minimum: seller and buyer details, document number and date, itemized goods/services with prices, a clear VAT statement, payment terms, and a price expiry date.

How long is a quotation valid?

There is no legal requirement, but 15–30 days is standard practice — and the expiry date should always be stated on the document.

Is a quotation a contract? Can the client cancel after signing?

On its own, it is not yet a contract, but a signed client acceptance can create binding obligations. Cancelling after signature is a grey area — review it with a legal advisor case by case.

What is the difference between a quotation and a purchase order?

A quotation is the seller's commercial offer. A purchase order is the buyer's confirmation, which creates commercial obligations.

Does a quotation need stamp duty?

The quotation itself is not the main stamp duty issue. But if it is later interpreted as a hire-of-work contract after the client signs their acceptance, stamp duty consequences may follow. Consult a tax advisor case by case.

Summary

A good quotation has all the elements in place, states its expiry date clearly, and is kept properly distinct from purchase orders and tax invoices. The step that turns a quotation into a real deal is letting the client sign their acceptance in a single link.

Try it free — build a quotation with a built-in signature

This content is general information, not legal or tax advice for any specific case. Consult a legal or tax advisor before use.