Before filing: limitation, jurisdiction and the evidence audit
We start every instruction by fixing the limitation date, because it governs everything else. Thai limitation periods vary by the nature of the claim rather than by the size of the loss, and the period runs from when the right to sue arose, not from when the relationship broke down. Where the date is close we file to stop the clock and negotiate afterwards, rather than negotiating into expiry.
Jurisdiction follows the defendant's domicile or the place of performance, with specialised courts for labour, tax, intellectual property and international trade, bankruptcy and administrative matters. Filing in the wrong forum costs months. A contractual choice of a foreign court or of arbitration also has to be assessed early, because it may take the dispute out of the Thai civil courts entirely.
The evidence audit is where most cases are actually won. Contracts, purchase orders, delivery notes, tax invoices, withholding tax certificates, bank transfer slips and the company's own accounting records carry real weight. Foreign-language documents require certified Thai translation to be received. Correspondence conducted only through messaging applications can be admitted, but its weight depends on authentication, so we secure originals and device evidence early rather than screenshots.

