Thailand has no public health cover for foreign residents who are not employed there, and hospitals require a guarantee of payment before they treat you. Some long-stay visas also make insurance compulsory: the O-A retirement visa requires at least USD 100,000 or 3,000,000 baht of cover, and the LTR visa at least USD 50,000 (as of October 2026).
For a holiday, travel insurance usually does the job. For a stay of many months or years it often does not, because travel policies limit trip length and rarely cover routine care. Expats and retirees therefore need either an international health plan or a policy from a Thai insurer, and the choice affects both their visa and their wallet.
This page explains the visa rules first, then what to compare between plans. It names no insurers and recommends no products: the right policy depends on your age, health, budget and where you will live.
Insurance rules by visa (October 2026)
- O-A retirement visa
- At least USD 100,000 or 3,000,000 baht, Thai or foreign insurer, covering general illness including COVID-19; insurer completes the official Foreign Insurance Certificate
- O-X retirement visa
- Thai insurer; outpatient at least 40,000 baht, inpatient at least 400,000 baht
- LTR visa
- At least USD 50,000, or Thai social security benefits, or USD 100,000 kept in a bank account for 12 months
- DTV and Non-O retirement extension
- No insurance requirement in the official criteria
- Visa-exempt tourists
- No mandatory insurance
- Thai approved form
- longstay.tgia.org (Thai General Insurance Association)
Which visas require health insurance, and how much
O-A (long-stay retirement). The official e-Visa portal requires health insurance from a Thai or foreign insurer, covering general illness including COVID-19, with a minimum sum insured of USD 100,000 or 3,000,000 baht. The insurer must also complete, sign and stamp the Foreign Insurance Certificate set by Thailand's Office of Insurance Commission, downloadable from the TGIA long-stay site. Many older articles quote 40,000 baht outpatient and 400,000 baht inpatient for the O-A; on the current portal those figures belong to the O-X.
The requirement does not end at the airport. Bangkok Immigration's extension criteria say an O-A holder must keep cover of at least USD 100,000 or 3,000,000 baht for the whole stay, and that each permission to stay follows the insurance period, never longer than one year. Foreign insurance, or non-Thai social welfare, must be certified, for example by your embassy in Thailand. Our guide to Thailand's retirement visas explains the rest of the O-A rules.
O-X. This five-plus-five-year retirement visa requires insurance from an insurer in Thailand with outpatient cover of at least 40,000 baht and inpatient cover of at least 400,000 baht.
LTR. All four categories of the Long-Term Resident visa must show insurance of at least USD 50,000, or current Thai social security benefits, or USD 100,000 kept in a bank account in their name for at least 12 months.
DTV and the Non-O retirement extension. Neither lists insurance in its official criteria. That makes insurance a choice rather than a condition for DTV holders and for retirees extending a Non-O, but not an optional cost in practice, as the next section explains.
Why you need cover even when the visa does not ask
The UK Foreign Office is direct about money and hospitals in Thailand. All hospitals require a guarantee of payment before treating patients. Treatment, even in an emergency, is rarely free. If you are paying yourself at a private hospital, you will usually be asked for a cash deposit before treatment begins, and you may be moved to a government hospital if you can no longer pay. Without insurance, some hospitals send invoices daily.
Government hospitals normally cost less, and their doctors are often the same specialists who work in private hospitals. But they are busier, have fewer English-speaking staff, and the FCDO notes that foreigners on short-term visas may be charged higher fees there than residents. Many government hospitals and clinics outside Bangkok and the provincial capitals are not equipped for major trauma. Our guide to hospitals in Thailand covers the difference in more detail.
A visa-minimum policy can still leave you exposed. USD 50,000 or 3,000,000 baht is a legal floor, not a measure of what serious illness costs. A stay in intensive care, cancer treatment or a medical evacuation can exceed it. Choose your limit by the treatment you would want, not only by what immigration accepts.
Local Thai plans versus international plans
The two broad types of cover suit different people. Neither is better in general, and individual policies vary more than the labels suggest, so compare them point by point.
| What to compare | Plan from a Thai insurer | International health plan |
|---|---|---|
| Where it pays | Usually inside Thailand only | Several countries; check whether your home country is included |
| Visa paperwork | Insurers on the TGIA list issue the O-A or O-X form | Insurer must complete the Foreign Insurance Certificate; certification needed for extensions |
| Outpatient care | Check whether it is included or an add-on | Check whether it is included or an add-on |
| Evacuation and repatriation | Check; often not included | Check the limit and conditions |
| Paying the hospital | Ask which hospitals bill the insurer directly | Ask whether you pay first and claim back |
| Price | Compare quotes for your age; premiums for both types rise with age | |
Whichever you choose, read the hospital list. A plan that pays directly at the hospitals near you saves you from finding a large deposit at the worst moment. The FCDO notes that most private hospitals have an international liaison officer who deals with insurers.
If you work for a Thai employer, ask whether you are registered with the Social Security Office. Social security benefits are one of the options accepted for the LTR, and they may cover care at a registered hospital, but they are not a substitute for broader cover if you want private hospital choice.
Age limits, renewal and pre-existing conditions
Age is the hardest part of health insurance for retirees. Insurers commonly set a maximum age for taking out a new policy, and premiums rise as you get older. The limits vary by company and plan, so we do not print numbers; ask each insurer three questions in writing:
- What is the maximum age to start this policy?
- Is renewal guaranteed for life once I am covered, or can you refuse to renew?
- How do premiums change with age, and is there a separate excess or co-payment at older ages?
Buying in your fifties, before the age limits bite, keeps more options open than waiting until a visa forces the decision.
Pre-existing conditions are the second trap. Policies often exclude them, or cover them only after a waiting period or for an extra premium. The FCDO warns that an insurer may refuse a claim if you did not disclose a pre-existing condition. Declare everything, keep a copy of your application, and get any exclusions in writing.
For the O-A, Bangkok Immigration's criteria recognize that some applicants cannot get insurance. If an insurer refuses you, in whole or in part, the archived criteria accept a deposit of at least 3,000,000 baht in a Thai bank held for two months before applying, or deposit and other insurance together reaching that amount, with proof of the refusal. Check the current rule with your immigration office.
Gaps that catch long-stay residents
- Motorbikes. The FCDO notes that insurers may refuse claims after a motorcycle accident if the bike was over 50cc or you broke Thai road laws, for example riding without a valid licence. Our guide to motorcycle and scooter riding covers the rules.
- Outpatient and medicines. Routine visits and long-term prescriptions are often limited or excluded. Our article on medicines at Thai pharmacies helps with everyday needs, and the one on bringing prescription medicine into Thailand explains the import rules.
- Dental care. Usually separate or excluded; see our guide to dental treatment in Thailand.
- Trips home. A Thai plan may not pay for treatment abroad; a travel policy can fill that gap for short trips.
Short-stay visitors are in a different position: the UK Foreign Office advises taking out appropriate travel insurance, and our guide to travel insurance for Thailand covers what a trip policy must include. For other health topics, start at our health and safety hub.
Frequently asked questions
Is health insurance mandatory for living in Thailand?
Only for some visas. The O-A requires at least USD 100,000 or 3,000,000 baht of cover, the O-X requires Thai insurance with 40,000 baht outpatient and 400,000 baht inpatient, and the LTR requires USD 50,000 or an accepted alternative. The DTV and Non-O retirement extension do not list it.
Can I use foreign health insurance for the O-A visa?
Yes. The e-Visa portal accepts a Thai or foreign insurer with at least USD 100,000 or 3,000,000 baht of cover. The insurer must complete the official Foreign Insurance Certificate, and for extensions in Thailand, Bangkok Immigration asks for foreign cover to be certified, for example by your embassy.
What if no insurer will cover me because of my age?
For the O-A extension, Bangkok Immigration's archived criteria accept a deposit of at least 3,000,000 baht in a Thai bank, held two months before applying, with proof of the insurer's refusal. Other routes, such as the Non-O retirement extension, do not require insurance at all.
Do Thai hospitals treat you without insurance?
They treat, but they require a guarantee of payment first, according to the UK Foreign Office. Private hospitals usually ask self-paying patients for a cash deposit before treatment, and may transfer you to a government hospital if you cannot keep paying.
Sources
- Thailand e-Visa (Ministry of Foreign Affairs) – Retirement: O-A and O-X insurance requirements (checked October 2026)
- Immigration Division 1, Bangkok – Visa extension criteria, retirement and O-A insurance (archived copy of 11 September 2024) (checked October 2026)
- Thai General Insurance Association – Health insurance for long stay visa (checked October 2026)
- Board of Investment – LTR visa types and criteria (checked October 2026)
- UK Foreign, Commonwealth & Development Office – Healthcare and medical services in Thailand (updated 26 August 2026) (checked October 2026)
- UK Foreign, Commonwealth & Development Office – Living in Thailand (checked October 2026)
- Thailand e-Visa – Destination Thailand Visa (DTV) required documents (checked October 2026)