Thailand's 1 January 2024 rule: bring foreign income in, Thailand taxes it.

Thailand's Revenue Department issued a Departmental Order in September 2023, effective 1 January 2024. The order reinterprets the Thai Revenue Code's foreign-income provisions. The Indian-side counterpart is Section 9 of the Income-tax Act on source rules.

Pre-2024 interpretation: foreign-source income was Thai-taxable only if remitted in the SAME calendar year it was earned. Foreign income kept abroad for 12+ months was permanently outside Thai tax.

Post-2024 interpretation: foreign-source income earned by Thai tax residents (anyone in Thailand 180+ days a year) is Thai-taxable in any year it's remitted to Thailand, regardless of when it was earned.

For Indian-Thai retirees who remit pension and Indian rental periodically, this is a meaningful shift. Year-old or decade-old foreign income remitted in 2024 is now Thai-taxable in 2024.

Affected:

Indian-Thai who lived in Thailand 180+ days in a calendar year (Thai tax-resident).

Foreign-source income remitted to Thai accounts in any year.

Includes: Indian rental, NRO interest, Indian dividends, Indian pension, Indian capital gains.

Not affected:

Indian-Thai non-tax-residents (under 180 days a year). They escape the rule entirely.

Foreign-source income kept outside Thailand permanently.

Income earned by the spouse if the spouse files separately.

Grandfather provision: foreign-source income earned BEFORE 1 January 2024 remains under the old rule, taxable only if remitted in the same year. Income earned 2023 or earlier and remitted 2024+ stays exempt.

This grandfather is documentation-heavy. The Thai Revenue Department wants bank statements proving the income's origin year and the funds' residence outside Thailand until remittance.

The India-Thailand DTAA caps interest at 10% under Article 11 and dividends at 10% under Article 10. The 2024 Thai rule doesn't change these caps.

For an Indian-Thai with ₹40 lakh NRO FD at 7%: default Indian TDS 30%, treaty rate 10%. Annual saving with Form 10F: ₹56,000.

If the same NRO interest is remitted to Thailand in the year it's earned: Thai tax on the gross interest at marginal rates (up to 35% top slab). Foreign tax credit under Article 23 of the DTAA gives credit for the Indian 10% TDS.

Net effective rate on remitted Indian-source income for top-slab Thai-Indians: roughly 35% (Thai marginal) + 10% (Indian withholding remaining after credit) ≈ Thai marginal. The Indian recovery via Form 10F still saves money on the Indian side; the Thai side sets the floor.

If the income stays in India (no remittance), only the 10% Indian rate applies. Same as the pre-2024 rule.

A Bangkok-based Indian retiree (Thai tax-resident, 270 days/year in Thailand):

Indian pension: ₹6 lakh annually.

Indian rental: ₹4 lakh annually.

NRO interest: ₹2 lakh annually.

Total Indian-source income: ₹12 lakh.

Living expenses in Thailand: ₹8 lakh per year (so ₹8 lakh remitted; ₹4 lakh kept in India).

India-side filing (Section 195 + Article 11 + Article 10):

NRO interest at 10%: ₹20,000 TDS.

Rental at slab: ~₹30,000.

Pension at slab: ~₹60,000.

Total Indian tax: ~₹1.1 lakh.

Thai-side filing (post-2024 rule):

Remitted ₹8 lakh becomes Thai-taxable as foreign-source income.

Thai tax at 25% slab: ~₹2 lakh.

Foreign tax credit for the proportional Indian ₹73,000 already paid.

Net additional Thai tax: ~₹1.27 lakh.

Total cross-border tax: ~₹2.37 lakh on ₹12 lakh income, an effective rate of 19.7%. Pre-2024 the same retiree paid only the Indian ₹1.1 lakh.

We handle the Indian side. Thai-side filings need a Thai accountant or registered tax preparer. We coordinate with theirs.

Indian-side scope: Form 10F refile, Thai Revenue TRC liaison, NRO interest recovery via the 10% Article 11 rate, Schedule FA filings, Section 119(2)(b) condonation for past years.

Fee: 15% of recovered Indian TDS, contingent. Annual filing: ₹4,999 flat per year. We can help structure remittance timing to optimise the Thai-side liability, but that planning is Thai-tax-driven, not Indian-tax-driven.

If you've been remitting funds to Thailand without tracking the source year, book free CA appointment. The grandfather rule for pre-2024 income is documentation-dependent; rebuilding the evidence trail in year 2 is harder than year 1.

Q: I'm in Thailand 150 days a year on a tourist visa. Does the rule apply?

A: No. Thai tax residency starts at 180+ days in a calendar year. Below 180 days, you're a Thai non-resident. The 2024 rule doesn't apply to non-residents on foreign-source income.

Q: My Indian rental is paid to my Indian bank, never remitted. Thai tax?

A: No. The 2024 rule applies only to remittances. Indian-source income kept in India stays outside Thai tax.

Q: I remitted ₹10 lakh from my 2018 NRO savings to my Bangkok bank in 2024. Thai-taxable?

A: Likely no, because the income was earned pre-2024 (grandfather provision). But you need bank statements proving the funds were earned 2018 (or earlier) and held outside Thailand from then until remittance. Without records, the Thai Revenue Department defaults to taxing it.

Q: I receive my Indian pension monthly into my Bangkok bank. Tax?

A: Yes. Direct transfer from Indian source to Thai bank in the year of earning is the canonical remittance case. Thai-taxable at marginal slab rates from 1 January 2024.

Q: Can I just keep all funds in India and avoid the rule?

A: Yes if you can fund Thai living expenses some other way. Some Indian-Thai retirees use a Thai-side credit card paid from a Thai-domiciled deposit (built up before 2024) to defer remittances indefinitely. Workable but requires planning. Book free CA appointment for the structuring.