For a straightforward foreign-quota condo purchase, the conservative route remains simple: send funds from outside Thailand in a major foreign currency, state the condominium purchase purpose clearly, and let the Thai receiving bank handle conversion or credit to the appropriate account. That produces the cleanest audit trail because the foreign origin and property purpose are visible in the bank's own records.
However, the legal evidence framework is wider than the slogan “foreign currency only.” Department of Lands guidance for Section 19(5) also accepts evidence tied to a withdrawal from a non-resident baht account or a foreign-currency deposit account. Bank of Thailand rules likewise allow both foreign currency and baht to be transferred into Thailand generally. For a specific closing, the question is therefore not merely what currency can enter Thailand, but which route creates evidence the Land Office will accept for this buyer and unit.
The payment purpose deserves more attention than it usually gets. Use the exact wording requested by the receiving bank and include the condominium, project, unit or buyer reference it asks for. Bangkok Bank's current guidance gives “To purchase a condominium” as the purpose for this type of inward remittance. A precise purpose helps the bank connect the transaction to the document it is later asked to issue.
Do not build the transaction around a single internet threshold. The Department of Lands regulation currently published on its website describes a USD 20,000 distinction for one set of foreign-exchange evidence, while the Bank of Thailand's current general exchange-control guidance uses USD 200,000 as the threshold above which supporting documents are generally required for certain foreign-exchange transactions. These figures serve different regulatory purposes; neither should be sold as a universal 2026 “FET threshold” for every bank and Land Office.
The sending side can be just as important for Russian, CIS and other cross-border buyers whose banks face changing correspondent or compliance restrictions. Use only a lawful route that both banks can process, and confirm it before each substantial payment. Do not rely on an agent's promise that a workaround will be accepted: the receiving bank, the closing lawyer and, where needed, the Land Office are the parties whose documentary requirements matter.