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How we check our data

Last updated:

ThaiSpend's calculators are only useful if the numbers behind them are right. This page explains where those numbers come from and how we keep them current.

Where the data comes from

  • Entry rules (TDAC, visa exemption, stay extensions, overstay fines): the official Thai Digital Arrival Card site, the Immigration Bureau and the Ministry of Foreign Affairs e-Visa site.
  • Train fares and stations: the published fare tables of each operator (BTS, MRT, Airport Rail Link, SRT Red Line).
  • Travel prices between cities: operators' own sites and booking platforms. These change often, so we show them as ranges with the month they were checked, never as fixed prices.

Each tool page lists the exact sources it uses.

How rules are stored

Every figure lives in one data file, not in the text of a page. Each value has the date it took effect, the date it ends (if it has been replaced), a link to its source and the date we last verified it. When a rule changes, as the visa-exempt stay did in September 2026, the calculators use the rule that applies to the dates you enter.

How often we check

  • An automated job checks the official source pages every week and alerts us when one changes.
  • When a new rule is announced, we aim to update the affected tools within 24 hours.
  • Each tool shows a "Last verified" date. If a figure has not yet been checked against its source, the page says so.

How pages are written

Drafts are prepared with the help of AI tools. Every page is then checked against the official sources by Jay, who lives in Bangkok and adds first-hand experience before it is published. Nothing is published without that review.

Limits

Our results are estimates for planning. Immigration officers make the final decision at the border, and operators can change fares without notice. ThaiSpend is independent and is not affiliated with Thai Immigration or any government agency.

Report an error

Email hello@thaispend.com with the page and what looks wrong. A link to an official source helps us fix it faster.