Fees And Permits

Confirm these fees before you book so your operator plan and day budget match what you will pay onsite.

Fees You Can't Skip

Thailand Digital Arrival Card (TDAC) - Free (official submission)
Mu Ko Similan National Park visitor fee (reference) - THB 500 per foreign adult (child rates vary)
Typical payment pattern: Thailand's diving costs usually break into three buckets: (1) entry paperwork (TDAC and, if needed, a visa), (2) nationalpark and island fees, and (3) operator charges for boats and gear.

What people usually pay

Thailand's diving costs usually break into three buckets: (1) entry paperwork (TDAC and, if needed, a visa), (2) national-park and island fees, and (3) operator charges for boats and gear. Offshore marine parks can add meaningful per-person fees, and some areas have separate island maintenance charges. Always carry some cash for piers and small islands, even if you mostly pay by card in cities.

Fee	Amount	Applies to	Where to pay	Notes
Thailand Digital Arrival Card (TDAC)	Free (official submission) Per entry (submission required before arrival)	Most foreign travelers entering Thailand	Online via tdac.immigration.go.th	The TDAC is a travel information submission, not a visa. Submit within the official window (commonly 3 days before arrival) and keep a screenshot or PDF confirmation.
Mu Ko Similan National Park visitor fee (reference)	THB 500 per foreign adult (child rates vary) Day entry (rules vary by park and operator)	Visitors joining Similan-area trips from Phuket or Khao Lak	Often bundled by tour operators; may be checked by park staff	Similan and Surin marine parks typically close in the southwest monsoon and reopen around mid-October in many years. Confirm opening dates and any e-ticket requirements for your exact travel month.
Phi Phi area national park fee (reference)	Often quoted around THB 400 per foreign adult (child rates vary) Per visit (keep your ticket for inspections)	Visitors to the Phi Phi island group from Krabi or Phuket	Collected by park staff or bundled in boat tours	Fees and enforcement can vary by entry point (pier versus beach). Keep the paper ticket with you during the day in case officials check it.
Koh Nang Yuan entrance or maintenance fee	THB 100-250 (varies) Day entry	Visitors on [Koh Tao](/destinations/koh-tao-thailand) day trips	Collected on arrival (often via boat operators)	Treat this as a separate island fee from your boat ticket. Carry cash and confirm the latest rate with your operator.