Taxability

Thailand is a remittance tax basis (so its taxable if its sent to Thailand). If the investments are transferred to Thailand then this is an assessable income source and taxable on the capital gains.

Yes, Thailand is a remittance tax basis, so you are liable for tax on the capital gains, if they are remitted / transferred into Thailand. If they are not transferred to Thailand, they are not a taxable income source.

It is not the whole account profit that is taxed, but the gains on assets you sell and remit into Thailand. For example, if you sell shares for a gain and remit the proceeds, the gain portion is taxable in Thailand. Accurate records of cumulative gains are essential for compliance.

Private pensions, dividends, interest, and other investment income may be taxable in Thailand if you are a Thai tax resident and remit the income into Thailand in the same year it is earned (post-2024 rules). If German tax is already paid, you may claim a foreign tax credit in Thailand.

Learn more about the Thailand–Germany DTA in our full webinar here.