Thailand's four long-stay routes each set a different insurance bar, and the differences are larger than most applicants expect. The O-A asks for 3,000,000 baht. The O-X asks for far less, 400,000 baht inpatient per year, but only from an approved Thai insurer. The LTR asks for 50,000 US dollars, and uniquely lets you replace insurance altogether with a bank deposit. The DTV does not require it everywhere, which is why applicants get contradictory answers.
The four rules side by side
The O-A requires an insured sum of 3,000,000 baht, roughly 100,000 dollars, covering general illness including COVID-19, and accepts a foreign insurer that completes the official certificate. The O-X requires 400,000 baht inpatient and 40,000 baht outpatient per policy year, from an approved Thai insurer, held without interruption. The LTR requires 50,000 dollars of cover. The DTV has no universal requirement, though individual embassies ask for around 50,000 dollars.
The LTR alternative almost nobody mentions
The LTR is the only route where insurance is not the only way to satisfy the health condition. Applicants can instead show qualifying social security cover that includes medical treatment in Thailand, or a personal bank deposit of at least 50,000 to 100,000 US dollars held for a continuous period. For an applicant refused by insurers on age grounds, that alternative can be the difference between a viable application and a dead end. Confirm the current figure and holding period with the issuing authority, since the conditions have been adjusted more than once.
Why applicants get contradictory answers about the DTV
Because both answers are true. Insurance is not a universal condition of the DTV, but individual embassies and consulates ask for proof anyway as part of their own document list. Forum threads therefore contain sincere accounts of people who were asked and people who were not. The only reliable source is the document checklist of the specific post handling your file, not the experience of someone who applied elsewhere.
Which route the insurance question should push you toward
If you are over 50, still insurable, and want to keep an international policy, the O-A fits. If you are settled long term and comfortable with a Thai insurer, the O-X asks for far less cover in exchange for tighter conditions. If you have been refused on age and hold capital, the LTR deposit route deserves a serious look. And if you are younger and working remotely, the DTV likely removes the constraint entirely.
What none of these figures tell you
Every one of these thresholds is an administrative minimum, not a medical one. Meeting 400,000 baht satisfies an immigration officer; it does not pay for a serious hospital stay in a private Bangkok hospital. Treat the visa figure as a floor to clear, and decide the cover you actually want on the separate question of what treatment would cost where you plan to live.
Frequently asked
Can one policy satisfy several visa types?
Usually yes if it meets the highest bar and the insurer is approved locally. A policy built for the O-A generally exceeds the LTR and DTV thresholds.
Does the LTR deposit have to stay untouched?
It must be held continuously for the required period, so it cannot be used as working capital. Confirm the exact duration with the issuing authority before relying on it.
Is travel insurance ever enough?
No. All of these routes ask for health cover for the duration of stay, not a trip-length travel policy.
What happens if the rules change mid-visa?
Changes have generally applied to new applications and renewals rather than retroactively, as when the O-A threshold moved in October 2021. Your next renewal is the moment to re-check.