Thailand

You're traveling with a GoPro Hero 12 and its dive housing, plus a DJI Osmo Action as a backup: total value around €700, already above the 20,000 THB (~550 USD) allowance that opens the green channel. Upon arrival in Bangkok (Suvarnabhumi) or Phuket, the intended route is therefore the red channel: present this compact equipment, clearly for personal use: above the allowance, customs may apply a flat rate of duty and taxes. Keep your invoices (paper or digital) and note down the serial numbers before departure. The risk is almost zero: Thai Customs isn't interested in tourists' action cams. The only precaution: avoid bringing multiple new, packaged items, which could suggest resale in Thailand and trigger import duties (up to 30% + 7% VAT). A used camera in its housing, mounted on a floating grip, poses no problem.

Your kit: Sony A6700, Ikelite housing, two Sea&Sea strobes, a macro lens. Approximate value €3,500, which is well above the 20,000 THB (~550 USD) allowance. The intended route is the red channel: for non-commercial personal belongings up to 200,000 THB, customs assess a flat rate of duty and taxes on the spot, payable in cash or by card. Present a list with serial numbers, invoices, and your dive bookings (Koh Tao, Similan) proving recreational use. In practice, Thai Customs is tolerant of clearly used recreational equipment. The risk if you go through the green channel and are inspected: possible taxation (0–30% duties + 7% VAT) or a prolonged discussion. Visibly used equipment, packed in a dive bag with a wetsuit and regulator, strongly argues in your favor.

Expert kit: Canon R5 II, Nauticam housing, fisheye dome, macro and wide-angle lenses, aluminum arms, two Retra strobes, value €14,000, far above both the allowance and the 200,000 THB flat-rate ceiling. Two options. Strictly personal use: mandatory red channel upon arrival; above 200,000 THB, Thai Customs require a formal import declaration at the Customs Formality Sub-division (2nd floor of the Suvarnabhumi passenger terminal), with payment of duty and taxes. Bring a detailed list (serial numbers, invoices). Professional use (commercial shooting, production): ATA Carnet highly recommended, accepted by Thailand, must be stamped at the red channel upon entry AND exit, otherwise you risk losing the bond. Alternative: bond via an authorized Thai broker. Risks: non-declaration = taxation (up to 30% + 7% VAT) or even seizure of equipment; forgetting the exit stamp on the carnet = claim on the bond.

Do I need to declare my underwater photography equipment when arriving in Thailand?

If your total equipment value is under 20,000 THB (~550 USD), it's covered by the personal effects allowance: the green channel is an option. Above that, which is the case for most dive photo kits, go through the red channel with invoices and serial numbers: up to 200,000 THB of non-commercial personal belongings, customs assess a flat rate of duty and taxes on the spot; above that, they require a formal import declaration. Thai Customs is generally understanding with tourist divers, but declaring protects you from surprise taxation (0–30% duties + 7% VAT).

Is an ATA Carnet useful for a dive photographer in Thailand?

Yes, if your use is professional (video production, commercial shooting) or if your kit significantly exceeds the allowance. Thailand accepts the ATA Carnet for audiovisual equipment. Be aware: it's mandatory to present it at the red channel upon entry and exit to get it stamped, and re-export must occur within one year. For purely recreational use, declaring at the red channel is enough.

What are the risks if I go through the green channel with expensive gear without declaring it?

In the event of a random check, Thai Customs may demand import duties (up to 30% depending on the category) plus 7% VAT on the equipment's value, or even seize the equipment in case of a dispute. Visibly used equipment accompanied by dive gear argues for personal use, but above 20,000 THB (~550 USD), the red channel is the intended route.