Personal Income Tax Deductions in Thailand

Individuals who are required to pay personal income tax in Thailand are entitled to claim statutory deductions and allowances before calculating taxable income. These deductions are prescribed under Thai tax law and administered by the Revenue Department.

Personal income tax deductions in Thailand generally fall into three categories:

  • Standard expense deductions
  • Personal and family allowances
  • Insurance, investment, and special incentive deductions

Below is a practical overview of key personal income tax deductions applicable for the 2024 tax year.

Standard Expense Deductions

Income earners are entitled to standard expense deductions, which generally range from 10% to 60%, depending on the type of income.
If no standard rate is prescribed, actual and necessary expenses may be deducted, subject to legal requirements.

Personal and Family Allowances

Basic Personal Allowance

  • Taxpayer allowance: THB 60,000
  • Spouse allowance (spouse with no income): THB 60,000
  • If both spouses earn income, the combined allowance must not exceed THB 120,000

Child Allowance

  • THB 30,000 per child, up to 3 children
  • Applicable to legitimate or legally adopted children
  • The child must not earn THB 30,000 or more in the tax year and must meet one of the following conditions:

    • Be a minor

    • Be under 25 years old and studying at a university or higher education institution

    • Be a person declared incompetent or quasi-incompetent under court order

Parent Allowance

  • THB 30,000 per parent, provided the parent:

    • Is aged 60 years or older

    • Has assessable income not exceeding THB 30,000 per year

  • An additional THB 30,000 allowance is available for parents of the spouse

Disabled or Handicapped Dependant

  • THB 60,000 per person

Insurance-Related Deductions

Life Insurance

  • Life insurance premiums (policy term of 10 years or more): deductible up to THB 100,000
  • Spouse’s life insurance (spouse without income): deductible up to THB 10,000
  • If both spouses have income, the excess portion (up to THB 90,000) may be deductible subject to income limits

Health Insurance

  • Health insurance premiums: deductible up to THB 25,000
  • When combined with qualifying life insurance, total deductions must not exceed THB 100,000
  • Health insurance for parents: deductible up to THB 15,000, provided parents earn no more than THB 30,000annually

Retirement, Pension, and Investment Deductions

Provident Fund

  • Contributions deductible up to THB 10,000
  • Excess contributions (up to THB 490,000) deductible, subject to 15% of wages

Retirement Mutual Fund (RMF)

  • Deductible up to 30% of assessable income, in accordance with securities law

Pension Life Insurance

  • Deductible up to 15% of taxable income, capped at THB 200,000
  • Policy must provide pension benefits from age 55 to at least 85

National Savings Fund

  • Deductible up to THB 500,000

Important:
Deductions for Provident Fund, RMF, Pension Life Insurance, and National Savings Fund combined must not exceed THB 500,000.

Super Savings Fund (SSF)

  • Deductible up to 30% of assessable income, capped at THB 200,000

Other Allowable Deductions

  • Home loan interest: up to THB 100,000
  • Social Security contributions: deductible up to THB 200,000
  • Donations:

    • Education, sports, or social development: 2× deduction, capped at 10% of income

    • E-donations: 2× deduction, capped at 10%

    • General donations: capped at 10%

    • Political party donations: capped at THB 10,000

  • Prenatal care and maternity expenses: up to THB 60,000 per occurrence
  • CCTV installation in Special Development Zones: deductible as paid
  • Investment in registered social enterprises: up to THB 100,000
  • Shop Dee Mee Kun program: deductible up to THB 30,000 (VAT-registered purchases, books, e-books, OTOP products)

Tax Filing Deadline in Thailand

Tax residents in Thailand must file their annual personal income tax return:

  • By 31 March of the following year, or
  • By 9 April if filing electronically

Each tax year may introduce special or temporary deductions, so professional advice is recommended to ensure full compliance and optimal tax planning.