Thailand Tax Deductions 2026: Complete Checklist of All Allowances

Tax Deduction Overview 2026

Thai taxpayers left over 25 billion baht in unclaimed deductions last year. That is not a typo. The Revenue Department’s own data shows that millions of filers claim only the automatic personal allowance and Social Security — ignoring more than a dozen additional deductions they qualify for.

This guide is the fix. Below is every tax deduction available for the 2569 tax year (April 2026 filing season), organized by category, with real numbers, eligibility rules, and three worked examples showing exactly how much you can save.

Before we dive into each category, here is the full picture in one table:

Category	Deduction	Maximum (Baht/Year)
Personal	Personal allowance	60,000
	Spouse (no income)	60,000
	Child — 1st	30,000 per child
	Child — 2nd onward (born from 2018)	60,000 per child
	Parental care (age 60+, no income)	30,000 per parent
	Pregnancy & childbirth	60,000 per pregnancy
	Disabled/incapacitated dependant	60,000 per person
Insurance	Life insurance (10yr+)	100,000
	Health insurance	25,000
	Life + Health combined cap	100,000
	Parents’ health insurance	15,000
	Social Security	9,000
Investment	SSF (Super Savings Fund)	200,000
	RMF (Retirement Mutual Fund)	30% of income, max 500,000
	Thai ESG Fund	300,000
	PVD (Provident Fund)	15% of salary
	Combined fund cap (SSF+RMF+PVD+others)	500,000
Property	Home loan interest	100,000
Special	General donations	10% of net income
	e-Donation (2x multiplier)	10% of net income
	Political party donation	10,000
	Government stimulus (if applicable)	Per announcement

Save this page. Bookmark it. You will want it when December rolls around and you are scrambling to buy SSF units before the year-end deadline.

Personal & Family Allowances

These are the foundation of every Thai tax return. You get the personal allowance automatically — but the family deductions require you to actively claim them, and many people forget.

Personal Allowance: ฿60,000

Every individual taxpayer gets a flat ฿60,000 deduction. No conditions, no receipts needed. This is automatic when you file.

Spouse Allowance: ฿60,000

If your spouse has no assessable income during the tax year, you can claim an additional ฿60,000. The spouse must be legally married (registered marriage). Common-law partners do not qualify. If your spouse earns even a small amount of income and files their own return, you cannot claim this.

Child Allowance: ฿30,000 - ฿60,000 per child

• First child: ฿30,000 per child
• Second child onward (born from January 1, 2018): ฿60,000 per child

Children must be under 20, or under 25 if enrolled full-time in a Thai or overseas educational institution. There is no cap on the number of children you can claim. Adopted children qualify under the same rules.

Parental Care Allowance: ฿30,000 per parent

You can deduct ฿30,000 per parent (up to ฿60,000 for both parents) if:

1. Your parent is 60 years or older
2. Your parent’s annual income is less than ฿30,000
3. Only one child may claim each parent — siblings cannot split the deduction

This is one of the most commonly overlooked deductions. If your parents are retired and living on savings rather than income, you almost certainly qualify.

Pregnancy and Childbirth: up to ฿60,000

Actual medical expenses for pregnancy and childbirth at qualified medical facilities, up to ฿60,000 per pregnancy. This covers prenatal care, delivery, and postnatal care.

Disabled or Incapacitated Dependant: ฿60,000

If you are the primary caretaker of a disabled or incapacitated person (spouse, child, parent, or other qualifying dependant registered with you), you can deduct ฿60,000 per person. The person must hold a disability ID card issued by the Thai government.

Insurance Premium Deductions

Insurance deductions are straightforward in theory but confusing in practice because of the combined cap rule. Here is how it actually works.

Life Insurance Premiums: up to ฿100,000

You can deduct premiums paid for a life insurance policy (endowment, whole life, term life, or unit-linked) up to ฿100,000 per year, provided:

• The policy term is 10 years or longer
• The insurer is licensed in Thailand or approved by the Office of Insurance Commission (OIC)
• Annual premiums remain consistent (no irregular lump-sum payments that violate the policy structure)

If you surrender the policy before 10 years, you must repay the deduction for that year on your next tax return.

Health Insurance Premiums: up to ฿25,000

Health insurance premiums — covering hospitalization, outpatient, and critical illness — are deductible up to ฿25,000 per year. The policy must be issued by a Thai-licensed insurer.

The 100K Combined Cap (This Is Where People Get Confused)

Here is the rule that trips people up: life insurance + health insurance premiums combined cannot exceed ฿100,000.

What this means in practice:

Life Insurance Premium	Health Insurance Premium	Total Claimed
฿100,000	฿0	฿100,000
฿80,000	฿20,000	฿100,000
฿75,000	฿25,000	฿100,000
฿50,000	฿25,000	฿75,000
฿90,000	฿25,000	฿100,000 (capped, not ฿115,000)

If your life insurance premium is already ฿100,000, your health insurance deduction is zero — even though health insurance has its own ฿25,000 sub-cap. The combined ceiling overrides the individual limits.

Parents’ Health Insurance: ฿15,000 (Separate Cap)

Good news — health insurance you purchase for your parents is on a separate cap of ฿15,000. It does not count against your personal ฿100,000 combined limit. Conditions:

• Your parent(s) must earn less than ฿30,000/year
• The policy must be in your name as the payer
• Only one child can claim this deduction per parent

Social Security: ฿9,000

Your Social Security contributions are deductible at the actual amount paid — typically 5% of your monthly salary, capped at ฿750/month, which means a maximum of ฿9,000/year. This is usually pre-calculated on your withholding certificate.

Investment Fund Deductions (SSF/RMF/Thai ESG)

This is where the real tax savings happen. Investment fund deductions are the most powerful tool available to Thai taxpayers — and the most underused. Only about 15% of eligible taxpayers fully maximize their fund deductions, according to the Thai Mutual Fund Association.

SSF (Super Savings Fund): up to ฿200,000

The Super Savings Fund (SSF) replaced the old LTF in 2020 and has become the go-to tax-saving investment for most salaried workers.

• Maximum deduction: ฿200,000 per year (or 30% of assessable income, whichever is lower)
• Holding period: Minimum 10 years from date of purchase (each unit counted separately)
• Investment options: Equities, bonds, mixed funds, money market — your choice
• No minimum annual investment — you can buy in one lump sum or DCA monthly
• You can buy SSF from any licensed asset management company (e.g., Kasikorn Asset, SCB Asset, BBLAM, KKP)

RMF (Retirement Mutual Fund): up to 30% of income

RMF is designed for long-term retirement savings and comes with a higher potential deduction — but stricter rules.

• Maximum deduction: 30% of assessable income, up to ฿500,000 (combined cap with other retirement funds)
• Holding period: Must hold until age 55 and have invested for at least 5 years
• Investment continuity: You must invest at least once every calendar year (missing a year can disqualify prior deductions)
• Investment options: Wide range, similar to SSF

The age-55 requirement is non-negotiable. If you withdraw before age 55 (except in cases of death or disability), you must repay the deductions claimed plus a penalty surcharge.

Thai ESG Fund: up to ฿300,000 (Separate Cap)

This is the one most people do not know about. The Thai ESG fund was introduced in late 2023 as a tax incentive for investing in ESG-focused Thai equity funds.

• Maximum deduction: ฿300,000 per year (or 30% of assessable income, whichever is lower)
• Holding period: 8 years from date of purchase
• Separate cap — Thai ESG does not count toward the ฿500,000 combined retirement fund cap

This means you can deduct ฿200,000 in SSF, ฿300,000 in RMF, AND ฿300,000 in Thai ESG in the same year — if your income supports it. The Thai ESG deduction alone can save you ฿45,000 to ฿105,000 in tax depending on your bracket.

PVD (Provident Fund): up to 15% of salary

If your employer offers a Provident Fund, your contributions are deductible up to 15% of your salary. This falls under the ฿500,000 combined cap. Employer contributions do not count as your deduction — only your portion.

For a deep dive on maximizing your PVD, see the Provident Fund Guide.

Property & Home Loan Deductions

Home Loan Interest: up to ฿100,000

If you are paying a mortgage on a residential property, you can deduct the interest portion of your loan payments up to ฿100,000 per year. This is one of the largest single deductions available and often represents significant tax savings for homeowners.

Eligibility requirements:

• The loan must be for purchasing or constructing a residential property (not a commercial property or vacant land)
• The lender must be a licensed financial institution in Thailand (banks, specialized financial institutions, the Government Housing Bank, etc.)
• The property must be used as your primary residence (or your family’s residence)
• You need a loan interest certificate from your bank — request this annually

What counts and what does not:

• First home purchase: Fully eligible
• Refinancing: Eligible, as long as the new loan is still for the same residential property and the total deduction does not exceed ฿100,000
• Second home / investment property: Not eligible for this deduction
• Home equity loan used for renovations: Not eligible unless the original loan was for purchase/construction

Joint borrowers: If you and your spouse co-borrow, you split the deduction. Each person claims up to ฿50,000 (total ฿100,000 between both of you). If only one spouse borrows, that spouse claims the full ฿100,000.

Special Deductions & Government Measures

Donations: The Hidden Tax Multiplier

Charitable donations are more powerful than most taxpayers realize — especially when you use the e-Donation system.

General donations to approved organizations (temples, hospitals, educational institutions, registered charities) are deductible up to 10% of your net income after all other deductions.

e-Donation (electronic donation system): Donations made through the Revenue Department’s e-Donation platform receive a 2x multiplier. A ฿10,000 donation becomes a ฿20,000 deduction. The system automatically verifies and records the donation — no paper receipt required. Eligible recipients include public hospitals, government educational institutions, and approved charities.

Educational institution donations: Donations to approved Thai educational institutions often qualify for the 2x multiplier as well.

Political party donations: Deductible up to ฿10,000 per year, but this is claimed as a tax credit (reduces tax directly) rather than a deduction (reduces taxable income).

Government Stimulus Measures for 2569

The Thai government periodically introduces temporary tax incentive measures to stimulate domestic spending. For the 2569 tax year, watch for announcements from the Revenue Department regarding:

• Shop Dee Mee Kuen (ช้อปดีมีคืน): In prior years, this program allowed deductions of up to ฿30,000 - ฿40,000 for purchases of goods and services from VAT-registered businesses during a specified period (typically late December through mid-February). Whether this measure returns for the 2569 tax year depends on Cabinet approval — check rd.go.th for the latest announcement.

• First home buyer incentives: Occasional programs offering additional deductions for first-time homebuyers. These are typically announced mid-year.

• Domestic tourism stimulus: Some years include deductions for hotel stays and travel packages within Thailand.

Worked Examples: 30K, 50K, 100K Salary

Numbers do not lie. Let us walk through three real-world scenarios to show exactly how much tax you save with proper deductions versus leaving money on the table.

All examples use the 2569 tax brackets and assume employment income (Section 40(1)) with the standard 50% expense deduction capped at ฿100,000.

Example 1: Monthly Salary ฿30,000 (฿360,000/year) — Single, No Investments

This is the baseline. A young professional who uses only the default deductions.

Without strategic deductions:

Item	Amount
Annual gross income	฿360,000
Expense deduction (50%, max 100K)	-฿100,000
Personal allowance	-฿60,000
Social Security (฿750 x 12)	-฿9,000
Net taxable income	฿191,000

Bracket	Amount	Rate	Tax
0 - 150,000	฿150,000	Exempt	฿0
150,001 - 191,000	฿41,000	5%	฿2,050
Total tax			฿2,050

With a ฿100,000 SSF investment added:

Item	Amount
Annual gross income	฿360,000
Expense deduction	-฿100,000
Personal allowance	-฿60,000
Social Security	-฿9,000
SSF investment	-฿100,000
Net taxable income	฿91,000

Net taxable income falls below the ฿150,000 exempt threshold.

Total tax: ฿0. You save ฿2,050 in tax, and you now own ฿100,000 worth of investment funds growing for your future.

Example 2: Monthly Salary ฿50,000 (฿600,000/year) — Married, SSF + RMF

A mid-career professional with a family, making strategic use of investment fund deductions.

Profile:

• Married, spouse has no income
• One child (born 2020)
• Life insurance: ฿40,000/year
• Health insurance: ฿20,000/year
• SSF investment: ฿100,000
• RMF investment: ฿80,000
• Social Security: ฿9,000

Deduction	Amount
Annual gross income	฿600,000
Expense deduction (50%, max 100K)	-฿100,000
Personal allowance	-฿60,000
Spouse allowance	-฿60,000
Child allowance (born after 2018)	-฿60,000
Life insurance	-฿40,000
Health insurance	-฿20,000
Social Security	-฿9,000
SSF	-฿100,000
RMF	-฿80,000
Total deductions	-฿529,000
Net taxable income	฿71,000

Net taxable income: ฿71,000 — below the ฿150,000 exempt threshold.

Total tax: ฿0.

Without any optional deductions (only personal + Social Security):

Item	Amount
Net taxable income	฿600,000 - ฿100,000 - ฿60,000 - ฿9,000 = ฿431,000

Bracket	Amount	Rate	Tax
0 - 150,000	฿150,000	Exempt	฿0
150,001 - 300,000	฿150,000	5%	฿7,500
300,001 - 431,000	฿131,000	10%	฿13,100
Total tax			฿20,600

Tax saved: ฿20,600. That is an extra month’s rent or a family vacation — just from knowing what to claim.

Example 3: Monthly Salary ฿100,000 (฿1,200,000/year) — Max Everything

A senior professional or manager who maximizes every available deduction.

Profile:

• Married, spouse has no income
• Two children (one born 2017, one born 2021)
• Both parents qualify for parental care deduction
• Life insurance: ฿80,000/year
• Health insurance: ฿20,000/year (combined cap = ฿100,000)
• Parents’ health insurance: ฿15,000
• Home loan interest: ฿100,000
• SSF: ฿200,000
• RMF: ฿160,000 (30% of ฿1.2M = ฿360,000, but capped by combined limit)
• Thai ESG: ฿300,000 (separate cap)
• Social Security: ฿9,000
• e-Donation: ฿25,000 (deducted at 2x = ฿50,000)

Deduction	Amount
Annual gross income	฿1,200,000
Expense deduction (50%, max 100K)	-฿100,000
Personal allowance	-฿60,000
Spouse allowance	-฿60,000
Child 1 (born 2017)	-฿30,000
Child 2 (born 2021)	-฿60,000
Parental care (both parents)	-฿60,000
Life + Health insurance (combined cap)	-฿100,000
Parents’ health insurance	-฿15,000
Social Security	-฿9,000
SSF	-฿200,000
RMF	-฿160,000
Thai ESG	-฿300,000
Home loan interest	-฿100,000
e-Donation (2x of ฿25,000)	-฿50,000
Total deductions	-฿1,304,000
Net taxable income	฿0 (fully sheltered)

Wait — can net taxable income really be negative? No. It floors at zero. But the point stands: with ฿1,200,000 in income and ฿1,304,000 in deductions, there is no taxable income left.

Total tax: ฿0.

Without optional deductions (personal + Social Security only):

Item	Amount
Net taxable income	฿1,200,000 - ฿100,000 - ฿60,000 - ฿9,000 = ฿1,031,000

Bracket	Amount	Rate	Tax
0 - 150,000	฿150,000	Exempt	฿0
150,001 - 300,000	฿150,000	5%	฿7,500
300,001 - 500,000	฿200,000	10%	฿20,000
500,001 - 750,000	฿250,000	15%	฿37,500
750,001 - 1,000,000	฿250,000	20%	฿50,000
1,000,001 - 1,031,000	฿31,000	25%	฿7,750
Total tax			฿122,750

Tax saved: ฿122,750. Over ten baht for every hundred earned — returned to your pocket instead of the government’s.

Common Mistakes to Avoid

After reviewing thousands of tax returns (and making a few of these mistakes myself early on), here are the five errors that cost Thai taxpayers the most money.

1. Not Maximizing SSF/RMF Before Year-End

This is the biggest one. Every December, asset management companies run a flood of ads screaming “buy SSF/RMF before December 31!” — and every year, millions of people ignore them.

The math is simple. If you are in the 20% tax bracket and invest ฿200,000 in SSF, you save ฿40,000 in tax. That is a 20% instant return on your money before the fund even generates a single baht of investment profit. No other financial product gives you an immediate guaranteed return like that.

The deadline is firm: purchases must be completed by December 31 of the tax year. Buying on January 2 means waiting an entire year for the deduction. Many fund houses close orders by December 28-29 to process in time.

2. Forgetting the Parental Care Deduction

Surveys by the Thai Revenue Department consistently show that fewer than 30% of eligible taxpayers claim the parental care deduction. That is ฿30,000 per parent that goes unclaimed — worth ฿1,500 to ฿10,500 in actual tax savings depending on your bracket.

The requirements are not complex: your parent must be 60 or older and earn less than ฿30,000 per year. If your parents are retired, they almost certainly qualify. The catch is that only one sibling can claim each parent, so coordinate with your brothers and sisters to make sure someone claims it.

3. Losing Receipts and Documentation

The Revenue Department can audit your return for up to 5 years after filing. If audited, you need to produce evidence for every deduction claimed:

• Insurance: Premium payment receipts or annual statements from your insurer
• SSF/RMF/Thai ESG: Fund purchase confirmations from the asset management company
• Home loan interest: Annual interest certificate from your bank
• Donations: Paper receipts or e-Donation confirmation numbers
• Parental care: Your parent’s national ID showing age, plus a signed declaration

No receipt = no deduction. The fix is simple: create a folder (digital or physical) labeled “Tax 2569” at the start of the year and drop every relevant document into it as it arrives.

4. Confusing Life + Health Insurance Combined Cap

We covered this above, but it bears repeating because the Revenue Department flags this error constantly. Life insurance (max ฿100,000) and health insurance (max ฿25,000) share a combined cap of ฿100,000. If your life insurance premium is ฿90,000 and your health insurance is ฿20,000, your total deduction is ฿100,000 — not ฿110,000.

The Revenue Department’s e-filing system will automatically cap your claim at ฿100,000 if you enter amounts exceeding it. But if you file on paper, the error may not be caught until an audit — at which point you owe the difference plus a 1.5% monthly surcharge.

5. Missing the Donation 2x Multiplier

Regular donations to approved organizations give you a 1x deduction. But donations made through the e-Donation system give you 2x. The difference is significant: a ฿50,000 donation through regular channels deducts ฿50,000 from your income. The same ฿50,000 through e-Donation deducts ฿100,000.

Many taxpayers donate to temples, hospitals, and schools every year but never use the e-Donation platform. The registration takes five minutes. The tax savings can be thousands of baht.

Check eligible organizations at edonation.rd.go.th.

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Quick Filing Reference

Deadline	Filing Method
March 31	Paper filing at Revenue Department office
April 8	Online filing via efiling.rd.go.th
April 8	Filing via RD Smart Tax app

Late filing penalties: fine up to ฿2,000 + surcharge of 1.5% per month on unpaid tax.

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Tax deductions are not a privilege reserved for the wealthy or for people with expensive accountants. Every Thai taxpayer — from a fresh graduate earning ฿15,000/month to a CEO earning millions — has access to the same deduction categories. The difference between paying full tax and paying almost nothing is simply knowing what exists and acting before December 31.

Use the Thailand Income Tax Calculator to model your exact situation. Enter your income, toggle your deductions, and watch your tax liability drop in real time.

Official source: Revenue Department of Thailand (กรมสรรพากร), rd.go.th — Data current for tax year 2569 (BE 2569 / CE 2026). Verify any government stimulus measures on the official website before claiming.