Online contracts that actually workfrom the first draft to the final day

Yes. Under Thailand's Electronic Transactions Act B.E. 2544, electronic data and signatures have the same legal force as paper, provided the signer can be identified and the document can be shown not to have been altered. Kontrax captures the full evidence chain: timestamps, IP addresses, and a cryptographic hash of every document. The exception is a transaction for which a law or an agency prescribes its own form — for example, Land Office registrations, which require the Land Department's Tor.Dor.21 form.

Electronic contracts can be used as evidence under Thailand's Electronic Transactions Act B.E. 2544, and Kontrax keeps the supporting record. Every signature is logged with its timestamp, signer and OTP confirmation, and the identity documents the sender chose to attach or ask for are bound to the contract. Once both have signed, a SHA-256 hash of the final PDF is stored on the contract and in an append-only audit log, so any later change to the file can be detected. Note that instruments on the Revenue Code's stamp-duty schedule, such as leases of land or buildings, hire-purchase, loans, hire of work and powers of attorney, must have their stamp duty paid before they can be used as evidence in a civil case. Some instrument types can be paid online through the Revenue Department's e-Stamp system; check with the Revenue Department how yours is paid.

Kontrax AI is the contract assistant on the drafting and signing pages. Ask about any clause of the contract you have open, or have the draft checked before you send it to the other party. Answers cite only Thai law the system actually found, from the Civil and Commercial Code, specific acts and Supreme Court decisions, with points from a lawyer's checklist. Personal data is removed before anything reaches the AI. The answers are general explanations to help you understand, not legal advice; if there is a dispute, consult a lawyer. Every Pass includes starter tokens, and you can top up.

Kontrax complies with Thailand's Personal Data Protection Act (PDPA). All data is encrypted in transit and at rest, and we never sell data to third parties. Your contracts and identity documents are stored in Singapore, the closest available data-centre region; that cross-border transfer is disclosed in our privacy policy under sections 28 and 29 of the PDPA.

Once your free contract is used, you'll be invited to buy a Pass: unlimited drafting, every template, and the full contract-management toolkit (reminders, amendments, renewals, terminations). See the plans on offer in the pricing section.

Yes — every contract type supports both individual and juristic-person parties, with fields for tax ID, authorised representative, and position. For organisations needing shared accounts, the Team Pass is recommended (sign up for an organisation account from the pricing section).

Every contract you've created remains accessible and downloadable forever. Creating a new contract needs an active Pass, and other features are limited.

A subscription auto-charges your card every month or year. A Pass is a single purchase for an agreed period, with no auto-charge; near expiry, we send a reminder and you decide whether to buy again.

Free plan lets you draft 1 contract (sign and download PDF — with a 'Generated by Kontrax' watermark) plus a 30-day expiration reminder before your contract end date. Designed for people who only need contracts occasionally.

Kontrax's residential rental template follows the OCPB Contract Committee Notification on residential building rental, B.E. 2568 (2025), which replaced the B.E. 2562 (2019) notification on 4 September 2025 and applies to landlords renting out 3 or more units: for short-term leases, deposit plus advance rent capped at 3 months' rent, deposit refund within the prescribed time after the lease ends, and utilities charged at no more than the provider's actual rate. See our residential lease page for a summary.