Bitcoin Tax in Thailand: Complete Guide for 2026

What is exempt:

• Profits from selling or transferring Bitcoin, other cryptocurrencies, and digital tokens
• Gains calculated as: Sale proceeds minus original cost minus direct trading fees
• Income earned between January 1, 2025 and December 31, 2029
• Applicable to both Thai nationals and foreign tax residents (expats with 180+ days in Thailand)

Mandatory conditions to qualify:

• Condition 1 — Use a licensed platform: Transactions MUST be executed through a digital asset exchange, broker, or dealer licensed by SEC Thailand. Check the official SEC list at sec.or.th.
• Condition 2 — Correct date window: Sale proceeds must be received between January 1, 2025 and December 31, 2029. Timing matters — avoid year-end cut-offs.
• Condition 3 — Profit must exceed cost: The exemption applies to the gain only (sale price minus what you paid). If you sell at a loss, there is no taxable gain anyway.
• Condition 4 — Keep clean records: Save all trade confirmations, cost basis documentation, deposit TXIDs, and statements showing trades went through a licensed operator.

What does NOT qualify for the exemption:

• Trades on international exchanges not licensed by SEC Thailand (e.g. global platforms without a Thai SEC license)
• P2P trades, wallet-to-wallet sales, or OTC deals not settled through a licensed exchange
• Mining rewards and staking income — not mentioned in the regulation, presumed taxable
• Airdrops, crypto lending yields, and DeFi income
• Crypto received as payment for services
• Gains realized before January 1, 2025 or after December 31, 2029

• International exchanges without Thai SEC license: If you trade on platforms not licensed by SEC Thailand, the 15% withholding tax applies to your gains. The 2025–2029 exemption does not protect these trades.
• Gains realized outside the 2025–2029 window: For any trades made before January 1, 2025 or after December 31, 2029 (when the exemption expires), the 15% withholding returns.
• If the Revenue Department issues new guidance narrowing the exemption: Stay informed via rd.go.th as the Department may clarify edge cases.

• Step 1 — Gather all transaction records: Download your complete transaction history from every exchange you used during the tax year. This includes buy orders, sell orders, deposits, withdrawals, and trading fees. Most licensed Thai exchanges provide CSV export.
• Step 2 — Convert all amounts to Thai Baht: Every transaction must be valued in THB at the exchange rate on the date of the transaction. Use the Bank of Thailand official exchange rate (bot.or.th) as your reference for international transactions.
• Step 3 — Calculate gains and losses for each transaction: For each sale or trade, subtract your cost basis (purchase price in THB) from the proceeds (sale price in THB). Record each transaction separately.
• Step 4 — Organize by income type: Separate exempt qualifying capital gains (MR 399, 2025–2029, SEC-licensed) from Section 40(4) gains that still attract withholding (e.g. international channels) and from Section 40(8) income (mining, staking, services). They are reported differently and may be subject to different filing requirements.
• Step 5 — Account for withholding and certificates: For non-exempt Section 40(4) gains, gather withholding certificates (หนังสือรับรองการหักภาษี ณ ที่จ่าย) where 15% was collected. For exempt licensed-exchange trades, keep full trade confirmations and statements to prove qualification.
• Step 6 — File your return: Complete Por Ngor Dor 90 (and Por Ngor Dor 94 if applicable) by the deadline. You can file online via the Revenue Department's e-filing system at rd.go.th or in person at your local Revenue Department office.
• Step 7 — Pay any remaining tax due: After accounting for withholding already paid, pay any remaining tax liability by the filing deadline to avoid penalties and interest.

• For every transaction, record: Date and time, amount in BTC or crypto, amount in THB (at the exchange rate on that date), exchange or platform used, transaction type (buy/sell/trade/receive), transaction fees paid.
• Save exchange statements and CSV exports: Download and archive these after every tax year. Exchanges can change platforms, close, or lose historical data.
• Save withholding certificates: Any licensed exchange that withheld 15% must provide a withholding certificate. Keep these for your tax filing.
• Save Bank of Thailand exchange rates: Print or download the official USD/THB rate for each date you had an international crypto transaction.
• Keep records for at least 5 years: This covers the full Revenue Department audit window.
• Consider crypto tax software: Tools like Koinly, CoinTracker, or CryptoTaxCalculator can automate the THB conversion and gain calculation across multiple exchanges. These are not Thai-specific but support THB as a base currency.

• What is the Bitcoin capital gains tax rate in Thailand in 2026? For trades through an SEC-licensed Thai exchange, the capital gains tax rate is 0% — fully exempt under Ministerial Regulation No. 399 from January 1, 2025 to December 31, 2029. For trades on international or unlicensed exchanges, the standard 15% withholding tax applies.
• What if I traded on an international exchange with no Thai withholding? You are responsible for self-reporting those gains in your Thai tax return (Por Ngor Dor 90). The Revenue Department has increased data sharing with international platforms and enforcement of unreported foreign crypto income.
• What happens to crypto taxes in Thailand after 2029? After December 31, 2029, the 5-year exemption expires and the standard 15% withholding tax on capital gains returns — unless the Thai government extends or replaces the measure. Investors planning long-term strategies should account for post-2029 taxation in their planning.
• Do I need to pay tax if I just hold Bitcoin and never sell? No. Unrealized gains — increases in the value of Bitcoin you still hold — are not taxed in Thailand. Tax is triggered only when you sell, trade, or dispose of the Bitcoin.
• Is there a minimum amount of crypto gain that is not taxable? Thailand does not have a specific crypto tax-free threshold. The general personal income exemption (฿150,000) applies to your total income — not specifically to crypto gains. In practice, very small gains may fall under the exempt threshold combined with your other deductions.
• Can I deduct trading fees from my crypto gains? Yes. Transaction fees paid at the time of purchase increase your cost basis (reducing your gain), and fees paid at the time of sale reduce your proceeds. Keep records of all fees.
• What if I received Bitcoin as a gift? Gifts of crypto follow Thailand's gift tax rules. Gifts from parents, children, or spouses up to ฿20,000,000 are generally exempt. Gifts from others above ฿10,000,000 may be subject to gift tax. When you eventually sell gifted crypto, you use the market value at the time of receipt as your cost basis.
• Does Thailand have a wash sale rule for crypto? Thailand has not issued specific guidance on wash sale rules for crypto (selling at a loss and immediately repurchasing). Without explicit guidance, losses from such transactions are treated on their merits — but the loss offset rules for crypto remain unclear.
• What currency do I use to calculate gains for Thai tax? All gains must be calculated in Thai Baht (THB). Use the Bank of Thailand official reference rate for the date of each transaction when converting from USD or other currencies.