What does a Thailand property purchase really cost above the price?

The purchase price is the headline number, not the amount you should expect to have ready for closing. A foreign condo buyer in Thailand can face a Land Office transfer fee, legal work, bank and foreign-exchange costs, condominium charges and deal-specific items that sit outside the advertised price. Those costs do not all use the same tax base, and they are not all legally payable by the same party.

This calculator is built around a foreign natural-person buyer. As checked on 31 August 2026, the standard registration fee for a transfer with value is 2% of the official appraised value used for registration. Thailand has extended a 0.01% residential transfer-fee measure through 30 June 2027 for qualifying homes up to THB 7 million, but the buyer must be a Thai-national natural person. A foreign buyer should therefore not reduce a closing budget simply because a project falls below the THB 7 million threshold.

Seller taxes need a separate treatment. Specific Business Tax, stamp duty and withholding tax can all appear on the same closing statement, yet they are not automatically buyer acquisition costs. Their tax treatment follows the seller and the transaction; the contract can then decide whether some of that economic burden is shifted. The calculator keeps seller-side amounts outside the buyer total unless you enter a confirmed amount that your contract actually requires you to pay.

Use the result as a funding plan rather than a tax assessment. Replace the planning defaults with the Land Office appraised value, the condominium's current common-fee and sinking-fund schedule, your lawyer's quote and the actual cost of moving money into Thailand. The more of those inputs are documentary, the closer “total entry cost” gets to the cash you genuinely need at transfer.

Transfer registration comes first because it is easy to misstate. The standard rate is 2% of the official appraised value used at registration, not necessarily 2% of the sale contract price. The advanced inputs therefore keep appraised value separate. If you do not know it yet, the tool uses the purchase price only as a temporary planning proxy. The buyer's share is then driven by the contract: a 50/50 split is common in some deals, but it is not a universal statutory allocation.

Specific Business Tax and stamp duty sit on the seller side of the tax calculation. A sale subject to Specific Business Tax is charged at 3% plus a local levy equal to 10% of that tax, producing an effective 3.3%; stamp duty is not charged on the same sale when SBT applies. Where SBT is not due, stamp duty is 0.5%. For a typical developer sale by a company, the calculator can display the corporate-seller reference amounts. A resale cannot be reduced to one switch because seller status, holding period and the statutory conditions matter.

Withholding tax is another reason not to quote one “all-in tax rate.” A corporate seller is subject to 1% withholding on the higher of the sale price and official appraised value. An individual seller is calculated differently, using the appraised value, years of ownership and applicable deductions. The tool therefore does not invent an individual-seller withholding number for resale. If your sale contract shifts a confirmed seller tax amount to you, enter that number explicitly and it will become part of the buyer budget.

Legal fees are not a government tariff. The THB 30,000 default is deliberately editable and should be replaced with the scope and fee you actually approve. As a current market reference rather than a recommendation, one Thai legal provider updated in August 2026 publishes a THB 19,900 fixed condo-purchase package and THB 34,900 when Land Office transfer attendance is included. Different scope, title work, contract negotiation or complex ownership issues can move the fee materially.

International remittance costs also need to be split into components. Bangkok Bank currently lists an incoming overseas-transfer fee of 0.25%, subject to a THB 200 minimum and THB 500 maximum, so THB 500 is used only as a receiving-bank placeholder. Your sending bank, intermediary banks and FX conversion can add more, often by much more than the receiving fee. For a foreign-owned condominium, confirm the payment purpose and the bank evidence required for registration before the material remittance is sent.

Finally, a new-build condo often asks for a one-off sinking-fund contribution and an advance common-area charge. These are project charges, not Thai national tax rates. Current Phuket projects show examples around THB 600 per square metre for the sinking fund and around THB 60 per square metre per month for common expenses, which is why those figures are useful editable defaults rather than “Thailand rates.” On a resale, the initial sinking contribution has usually been paid already, but arrears, special assessments and the building's actual fee schedule still need to be checked.