Working from Thailand as a Belgium resident

At a glance

Rule coverage

What the rules say about Thailand

The rules below are the ones most likely to shape a stay in Thailand, in plain words and with the source behind each one. Your own report tells you which of them apply to you.

1. Significant issueImmigration and visa

   Long stays without a valid permit mean real overstay penalties

   Every visa route in this corridor eventually runs out if it is not renewed or replaced. Overstaying costs 500 THB per day, capped at 20,000 THB (the cap hits at 40 days), payable before you can leave, under the Immigration Act B.E. 2522. Get caught rather than self-report and the consequences escalate: overstay of a year or less usually means a ban of up to 5 years, over a year up to 10 years. Voluntary surrender is treated more leniently than being caught. This is separate from simply needing to renew a DTV or LTR in time.

2. Significant issuePermanent establishment risk

   Contract authority or management from Thailand creates real PE exposure

   Habitually concluding or negotiating contracts, or exercising management functions, from inside Thailand is exactly what dependent-agent and management permanent establishment rules target, under both Section 76 bis domestically and Article 5 of Thailand's tax treaties. The Revenue Code sets no minimum number of days before this can arise, and the Revenue Department has issued no remote-worker guidance, so this is fact-driven risk rather than a bright line. Highest-risk profiles are sales, business development, and anyone with signing authority or senior management responsibility.

3. Significant issueRight to work

   Serving Thai clients or local business activity needs a real work permit

   Any service rendered to the Thai market or Thai-based clients, or occupations reserved for Thai nationals, falls outside every visitor and DTV route and needs a Non-Immigrant B visa plus a Work Permit under the Emergency Decree on Foreign Workers' Management. The DTV explicitly excludes this. This is the line between the accepted gray area of quiet foreign-employer remote work and something Thai authorities actively enforce against.

4. Significant issueTax residency

   180 days or more makes you a Thai tax resident

   An aggregate of 180 days or more physically present in Thailand within a calendar year makes you a Thai tax resident under Revenue Code Section 41. Note this is 180, not the 183 you may know from other countries. Residency itself does not tax your worldwide income directly, but it switches on the 2024 remittance rule: foreign income you bring into Thailand while resident becomes taxable. A DTV or LTR visa does not exempt you from this, holding either just gets you into the country legally, it says nothing about your tax residency day count.

5. Significant issuePersonal income tax

   As a resident, foreign income is taxed the year you bring it in

   Since 1 January 2024 (Departmental Instructions Por. 161/2566 and Por. 162/2566), a Thai tax resident who earns foreign income is taxed on it in the year it is remitted to Thailand, regardless of the year it was earned. This closed the old loophole of waiting a year to remit tax-free. The one real relief: income is only taxable on remittance if you were also a Thai tax resident in the year you earned it. Income earned in a year you were NOT a Thai resident stays exempt even if you remit it later, and anything earned before 1 January 2024 is grandfathered out entirely. A widely discussed 2025 proposal to exempt income remitted in the year earned or the following year is still just a draft, stalled around the February 2026 election. It is not law. Do not plan around it.

6. Significant issueCrypto tax and legal status

   Offshore exchanges serving Thai users need a Thai licence, and some are already blocked

   Since 13 April 2025 an extraterritorial decree reaches offshore crypto operators serving Thai users. Evidence of targeting Thailand includes Thai-language sites, a .th domain, accepting Thai Baht, Thai-law user agreements, advertising to Thai residents, or a Thai office or staff, and any operator meeting that bar needs a Thai licence. Penalties are 2 to 5 years imprisonment and fines of THB 200,000 to 500,000, with directors and responsible managers personally liable. This is not theoretical: the Ministry of Digital Economy and Society and the Thai SEC actually blocked five platforms, Bybit, 1000X, CoinEx, OKX and XT.COM, from 28 June 2025, telling users to withdraw or transfer funds before the cut-off. After that, logging in or retrieving funds from inside Thailand could simply fail. Separately, Thailand has committed to the OECD's Crypto-Asset Reporting Framework, with first automatic information exchanges from 2028, so the direction of travel is full transparency alongside the current tax break.

What tends to surprise people here

• Remitted foreign income can be taxable once you pass 180 days
• Working on a tourist entry is a grey area
• Zero social security totalization agreements with any country

Tax treaty between Belgium and Thailand