Thailand Income Tax Examples
See how Thailand personal income tax is calculated for different income levels and situations. Every number below is computed by the same engine that powers the Annual Tax Calculator — not typed by hand — so these examples can't drift from what the calculator would actually show you.
The basic flow: from salary to tax owed
How gross income becomes taxable income, and how that taxable income becomes a tax bill.
Gross income to taxable income to tax
Simple Employee: From Salary to Tax Owed
A single salaried employee earning ฿800,000 a year, with no dependents and no extra deductions beyond the standard employment deduction and personal allowance.
Assumptions (tax year 2026)
- Filing status: single, no dependents
- Employment income only (Section 40(1)) — eligible for the standard 50% deduction, capped at ฿100,000
- No life/health insurance, retirement fund contributions, or donations claimed
Gross income
฿800,000
Taxable income
฿640,000
Total tax
฿48,500
Marginal rate
15.00%
Effective rate (tax as % of gross income)
6.06%
This is the baseline flow every salaried taxpayer starts from: gross pay is reduced by the standard employment deduction and the personal allowance before any bracket rate is applied. The resulting taxable income (฿640,000) is what actually gets run through the progressive brackets — not the ฿800,000 salary.
Source: PwC Tax Summaries / Sherrings — Thailand Individual Deductions & Allowances — secondary source; see Sources & References for verification status
Marginal rate vs. effective rate
Your tax bracket is the rate on your last slice of income, not the rate on all of it. These examples show the gap at different income levels.
Marginal rate vs. effective rate at a low income level
Lower-Income Employee: Bracket Rate ≠ Overall Tax Rate
A taxpayer whose taxable income is ฿400,000 — low enough that most of it falls in the 0% and 5% brackets.
Assumptions (tax year 2026)
- Figure represents taxable income directly (after allowances/deductions already applied)
- No special income types or credits
Gross income
฿400,000
Taxable income
฿400,000
Total tax
฿17,500
Marginal rate
10.00%
Effective rate (tax as % of taxable income)
4.38%
Being "in the 10% bracket" does not mean paying 10% of this income in tax. Only the last ฿100,000 slice is taxed at 10% — the rest is taxed at 0% and 5% — so the effective rate (4.38%) is less than half the marginal rate.
Source: Sherrings — Thailand Personal Income Tax Rates — secondary source; see Sources & References for verification status
Progressive taxation made visible, bracket by bracket
Middle-Income Employee: Tax Across Multiple Brackets
A taxpayer with ฿1,000,000 of taxable income — enough to fill every bracket from 0% up to 20%.
Assumptions (tax year 2026)
- Figure represents taxable income directly (after allowances/deductions already applied)
- No special income types or credits
Gross income
฿1,000,000
Taxable income
฿1,000,000
Total tax
฿115,000
Marginal rate
20.00%
Effective rate (tax as % of taxable income)
11.50%
Five separate brackets each contribute part of the total ฿115,000 tax bill. The 20% marginal rate only applies to the final ฿250,000 slice — the effective rate across the whole ฿1,000,000 is 11.50%.
Source: Sherrings — Thailand Personal Income Tax Rates — secondary source; see Sources & References for verification status
Marginal vs. effective rate at a high income level
High-Income Employee: Why 30% Isn’t the Real Rate
A taxpayer with ฿5,000,000 of taxable income, deep into the 30% bracket.
Assumptions (tax year 2026)
- Figure represents taxable income directly (after allowances/deductions already applied)
- No special income types or credits
Gross income
฿5,000,000
Taxable income
฿5,000,000
Total tax
฿1,265,000
Marginal rate
30.00%
Effective rate (tax as % of taxable income)
25.30%
Even at a 30% marginal rate, the effective rate is 25.30% — every bracket below 30% still applies at its own lower rate to its own slice of income. No taxpayer in Thailand’s system pays their top bracket rate on their whole income.
Source: Sherrings — Thailand Personal Income Tax Rates — secondary source; see Sources & References for verification status
Crossing a bracket threshold
Does earning a little more push your whole income into a higher bracket? These two examples, ฿2,000 apart, show exactly what changes.
Bracket threshold, part 1 of 2
Just Below the 1,000,000 Threshold
A taxpayer with ฿999,000 of taxable income — ฿1,000 below the boundary between the 20% and 25% brackets.
Assumptions (tax year 2026)
- Figure represents taxable income directly (after allowances/deductions already applied)
Gross income
฿999,000
Taxable income
฿999,000
Total tax
฿114,800
Marginal rate
20.00%
Effective rate (tax as % of taxable income)
11.49%
All of this income is taxed at 20% or below — none of it reaches the 25% bracket, since the boundary is ฿1,000,000.
Source: Sherrings — Thailand Personal Income Tax Rates — secondary source; see Sources & References for verification status
Bracket threshold, part 2 of 2
Just Above the 1,000,000 Threshold
A taxpayer with ฿1,001,000 of taxable income — ฿1,000 above the boundary between the 20% and 25% brackets.
Assumptions (tax year 2026)
- Figure represents taxable income directly (after allowances/deductions already applied)
Gross income
฿1,001,000
Taxable income
฿1,001,000
Total tax
฿115,250
Marginal rate
25.00%
Effective rate (tax as % of taxable income)
11.51%
Earning ฿2,000 more than the example below costs only ฿450 more in tax — not ฿500 (25% of ฿2,000), and nowhere close to the whole ฿1,001,000 being taxed at 25%. Only the ฿1,000 above the ฿1,000,000 threshold is taxed at the new 25% rate; everything below the threshold is still taxed exactly as before.
Source: Sherrings — Thailand Personal Income Tax Rates — secondary source; see Sources & References for verification status
How deductions change the result
The same salary, with and without an insurance premium and provident fund contribution.
How deductions/allowances change the tax bill
Same Salary, Different Deductions
The same single, ฿800,000-salary employee as the Simple Employee example, but now contributing ฿25,000 to health insurance and ฿50,000 to a provident fund — both deduction categories the calculator supports.
Assumptions (tax year 2026)
- Same base profile as the Simple Employee example (single, no dependents, ฿800,000 salary)
- Adds: ฿25,000 health insurance premium (within the ฿25,000 cap) and ฿50,000 provident fund contribution (within the ฿500,000 cap)
Gross income
฿800,000
Taxable income
฿565,000
Total tax
฿37,250
Marginal rate
15.00%
Effective rate (tax as % of gross income)
4.66%
Without the extra deductions, this taxpayer owes 48,500 THB on a taxable income of 640,000 THB (see the Simple Employee example). Claiming the health insurance and provident fund deductions lowers taxable income to 565,000 THB and cuts the tax bill by 11,250 THB — money that would otherwise be taxed at this taxpayer's 15% marginal rate.
Source: PwC Tax Summaries / Sherrings — Thailand Individual Deductions & Allowances — secondary source; see Sources & References for verification status
A full calculator walkthrough
A realistic profile — married, one child, several deductions — computed exactly as the calculator would compute it.
Mirrors entering real numbers into the MyThaiTaxes calculator
Calculator Walkthrough: A Married Employee With a Child
A married employee earning ฿1,200,000 a year, whose spouse has no income of their own, with one child, maxed-out social security contributions, health insurance, and a provident fund — the same inputs this person would enter step by step into the Annual Tax Calculator.
Assumptions (tax year 2026)
- Married, spouse has no income of their own (qualifies for the spouse allowance)
- One child (born 2015 — the per-child birth-year bonus only applies to a 2nd or later child born 2018+)
- Social security contribution at the ฿10,500 annual cap
- ฿15,000 health insurance premium and ฿60,000 provident fund contribution, both within their respective caps
Gross income
฿1,200,000
Taxable income
฿864,500
Total tax
฿87,900
Marginal rate
20.00%
Effective rate (tax as % of gross income)
7.32%
This is exactly what the Annual Tax Calculator computes when these values are entered: every allowance and deduction stacks up before the progressive brackets are applied, bringing taxable income from ฿1,200,000 down to ฿864,500 and landing this taxpayer at a 20% marginal rate but only a 7.32% effective rate on gross income.
Source: PwC Tax Summaries / Sherrings — Thailand Individual Deductions & Allowances — secondary source; see Sources & References for verification status
Freelance income, foreign remittance, and pensions
Salaried employees are not the only tax situation on this site. These examples cover the flat-rate business-income deduction, why the same remitted amount can be taxable or exempt depending on when it was earned, and how a DTA can exempt one foreign pension while taxing another.
Freelance/business income and the flat-rate expense deduction
Freelance Consultant: From Gross Fees to Tax Owed
A single freelance consultant earning ฿900,000 a year in Section 40(8) business/sales income from multiple Thai clients, using the 60% flat-rate expense deduction instead of tracking actual receipts.
Assumptions (tax year 2026)
- Filing status: single, no dependents
- Section 40(8) business/sales income (consulting, e-commerce, agency-type revenue) — eligible for the 60% flat-rate expense deduction, uncapped
- No withholding tax, foreign income, insurance, or retirement fund contributions in this scenario
Gross income
฿900,000
Taxable income
฿300,000
Total tax
฿7,500
Marginal rate
5.00%
Effective rate (tax as % of gross income)
0.83%
This is the same gross-to-taxable flow as an employee, but the deduction is a flat 60% of income instead of the employee's capped 50%/฿100,000 deduction — a much larger reduction for the same gross figure. That is why this article's companion, Flat-Rate vs. Actual Expenses, matters: for a freelancer with low actual costs, the flat rate is usually the better choice. Freelancers who also had tax withheld from client invoices would subtract that withholding as a credit against this total — see Withholding Tax for Thai Freelancers.
Source: Thai Revenue Department — Expense Deductions for Self-Employed — secondary source; see Sources & References for verification status
Why the 2024+ remittance rule depends on when income was earned, not just when it was remitted
Foreign Income Remittance: Same Amount, Different Earned Dates
A Thai tax resident freelancer remits two equal $15,000 consulting fees to Thailand on the same day in 2025 — one earned in 2023, the other earned in 2024. Both are remitted after the 1 January 2024 rule change; only one is taxable.
Assumptions (tax year 2026)
- Thai tax resident for the relevant years (180+ days in Thailand)
- Both amounts (฿500,000 each) remitted to Thailand on 1 March 2025
- No Thai-sourced income, foreign tax paid, or other deductions in this scenario, to isolate the earned-date effect
Gross income
฿500,000
Taxable income
฿440,000
Total tax
฿21,500
Marginal rate
10.00%
Effective rate (tax as % of gross income)
4.30%
Both amounts are the same size, remitted on the same day, from the same country — the only difference is when the income was earned. Under Por. 161/2566, the 2023-earned amount keeps the pre-2024 same-year-remittance treatment and is never taxable no matter when it is later remitted; the 2024-earned amount falls under the new rule and is taxable when remitted, even in a later year. Half the total remittance ends up taxable, and half does not — see What Counts as Foreign Income in Thailand for the underlying rule and Transferring Money to Thailand for the full remittance mechanics.
Source: Mahanakorn Partners Group — Overview of Orders Por. 161/2566 and Por. 162/2566 — secondary source; see Sources & References for verification status
How the pension type and country — not just "is it a pension" — decide DTA treatment
Foreign Pension Income: One Exempt, One Taxable
A retired Thai tax resident remits two foreign pensions of comparable size in the same year: a US Social Security benefit and a UK private occupational pension. One is fully exempt from Thai tax under a specific DTA article; the other is taxable, with UK tax already paid credited against the Thai tax.
Assumptions (tax year 2026)
- Thai tax resident, age 65+ (qualifies for the senior exemption in addition to the personal allowance)
- US Social Security (฿500,000): exempt under Article 20(2) of the US-Thailand DTA — taxable only in the US
- UK private occupational pension (฿900,000): not a government/military pension, so the UK DTA's pension-exemption article does not apply — taxable in Thailand, with ฿30,000 of UK tax already paid claimed as a foreign tax credit
- No Thai-sourced income in this scenario
Gross income
฿900,000
Taxable income
฿650,000
Total tax
฿50,000
Marginal rate
15.00%
Effective rate (tax as % of gross income)
5.56%
Same pension concept, two different outcomes: the US Social Security payment is fully exempt because the US-Thailand treaty puts it outside Thai tax entirely (not a credit — it is simply not taxable here), while the UK private pension does not qualify for that DTA's narrower government-pension exemption, so it is taxed normally. The Thai tax bill before any credit is ฿50,000; the ฿30,000 of UK tax already paid reduces that to a final ฿20,000 still owed to Thailand. The credit cannot exceed the Thai tax on that same income — see Thai Double Tax Treaties for how the cap works in general.
Source: IRS — US–Thailand Double Taxation Convention (treaty text, Article 20(2)) — secondary source; see Sources & References for verification status
See your own numbers
These examples use illustrative profiles. Enter your real income, allowances, and deductions to get your own taxable income, tax owed, and effective rate.
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11 worked examples · Tax year 2026