What it means
Overstay occurs when a foreign national remains in Thailand past the "permitted to stay until" date stamped in their passport at immigration — the admission stamp date, not the visa validity date on the sticker. The distinction is critical: a 90-day visa allows 90 days from the date of entry, not from the visa issue date. Even one day of overstay triggers a ฿500/day fine capped at ฿20,000. Overstay penalties escalate dramatically with duration: over 90 days triggers a 1-year re-entry ban; over 1 year, a 3-year ban; over 3 years, a 5-year ban; over 5 years, a 10-year ban. Overstay is a criminal offence under the Immigration Act B.E. 2522 — detention and deportation follow arrest at any immigration checkpoint, border crossing, or police ID check. Voluntary surrender at an immigration office before arrest is treated significantly more leniently.
Why it matters in Pattaya
Pattaya's historically casual visa culture — tourism and tourist entries cycling through — produced one of Thailand's highest overstay incidence rates. Since 2016 and particularly from 2023, Jomtien Immigration's enforcement posture has hardened. Police conduct "foreigner checks" in entertainment areas (Walking Street, Soi Buakhao) specifically targeting individuals with expired admission stamps. The Thai digital immigration system — replacing paper TM6 cards — means overstay detection at airports and all land borders is automated and instantaneous. Voluntary overstay surrender at Jomtien for short periods with no previous violations results in a fine, a stamp in your passport, and departure within days — no long-term ban if the overstay was genuinely brief and accidental.
When you need it (to know)
- Always check the admission stamp date in your passport — not the visa sticker issue date or expiry date. The "permitted to stay until" date on the admission stamp is the operative deadline.
- After any visa extension approval, a new permitted-stay date is stamped on a fresh passport page. Confirm you can read this date clearly before leaving the immigration office.
- After re-entry from a border run or international trip, the new admission stamp resets your clock — your old extension date is no longer relevant.
- If your extension application is pending and your current stamp is about to expire, apply early enough for the new stamp to be issued before expiry — a pending application without an approved stamp is technically overstay.
- If you realise you have overstayed, do not attempt to exit at an airport — the overstay will be discovered and you will face a harder outcome than voluntary surrender at Jomtien.
Common mistakes
- Reading the visa sticker date instead of the admission stamp. A 90-day tourist visa issued months ago does not give 90 days from today — the admission stamp date is what controls your legal stay.
- Assuming pending extension applications prevent overstay. Filing is not approval. Your status remains on the current stamp until the new stamp is issued.
- Travelling during known or suspected overstay. Airport entry systems detect overstays at the departure check — you will face detention rather than the fine option.
Track your dates: Expiry countdown tool · Jomtien Immigration guide · Ask us if unsure about your status.
Related terms
Extension · Visa run · Re-entry permit · Immigration Bureau
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