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How tax works in Thailand

Income tax is charged at 5% to 35% on net income above the first ฿150,000. Net income is pay less a standard deduction for expenses of 50% (up to ฿100,000) and allowances. All taxpayers get a ฿60,000 personal allowance.

Employees pay social security of 5% of monthly wages up to ฿17,500 and their employer pays the same. The contributions are an allowance and reduce income tax.

Where an employer has a provident fund, employees can contribute up to 15% of wages. The first ฿10,000 of contributions is an allowance and the rest is exempt income, up to ฿490,000.

A Highly-Skilled Professional with a Long-Term Resident (LTR) visa, working for an employer in a targeted industry, can be taxed at a flat 17% of their pay with no expenses or allowances.

The tax year is the calendar year. Employers withhold tax from each month's pay. Employees file a return by 31 March of the following year (8 April online) and pay any tax still due when they file. Spouses can file separately or jointly.