io.github.holsson95/mythaitaxes-mcp (MCP Server)

The Model Context Protocol (MCP) server provides a free Thai personal income tax (PIT) calculator for salaried employees. It is sourced from mythaitaxes.com and is intended to compute or help calculate Thai PIT based on user inputs applicable to salaried work.

🛠️ Key Features

Free Thai personal income tax (PIT) calculator
Targeted at salaried employees
Powered by content from mythaitaxes.com

🚀 Use Cases

Calculating Thai PIT for salaried employees
Supporting tax estimation workflows using mythaitaxes.com logic

⚡ Developer Benefits

Focused, single-purpose calculator capability for Thai PIT
Clear source association with mythaitaxes.com

⚠️ Limitations

Described scope is limited to personal income tax for salaried employees
No additional tools, topics, or technical details (e.g., toolCount) are provided in the available source data

calculate_thai_annual_income_tax

Calculates Thailand personal income tax (PIT) for a salaried employee for a tax year, using current progressive tax brackets, standard allowances, and common deductions (social security, insurance, retirement funds, donations). Returns taxable income, tax owed, effective rate, and refund/amount owed against tax already withheld. Source: mythaitaxes.com.

Parameters16

annualIncome	number	required	Total annual gross income in THB, before any deductions.
maritalStatus	string	optional
spouseHasNoIncome	boolean	optional	True if married and the spouse has no income (unlocks the 60,000 THB spouse allowance).
isAge65OrOlder	boolean	optional	Adds the 190,000 THB senior allowance.
numberOfChildren	integer	optional
childrenBornOnOrAfter2018	integer	optional	2nd-or-later children born in 2018 or after qualify for a doubled (60,000 THB) allowance.
numberOfParents	integer	optional	Dependent parents supported (30,000 THB each, max 4).
socialSecurityContribution	number	optional	Annual social security fund contribution, max deductible 10,500 THB.
lifeInsurance	number	optional	Max deductible 100,000 THB.
healthInsurance	number	optional	Max deductible 25,000 THB.
pensionFund	number	optional	Max deductible 500,000 THB.
providentFund	number	optional	Max deductible 500,000 THB.
rmf	number	optional	Retirement Mutual Fund contribution, max deductible 500,000 THB.
ssf	number	optional	Super Savings Fund contribution, max deductible 200,000 THB.
donations	number	optional	Charitable donations, capped at 10% of income after allowances.
taxWithheld	number	optional	Tax already withheld by the employer this year, used to compute refund vs. amount owed.

Raw schema

{
  "type": "object",
  "properties": {
    "annualIncome": {
      "type": "number",
      "minimum": 0,
      "description": "Total annual gross income in THB, before any deductions."
    },
    "maritalStatus": {
      "type": "string",
      "enum": [
        "single",
        "married"
      ],
      "default": "single"
    },
    "spouseHasNoIncome": {
      "type": "boolean",
      "default": false,
      "description": "True if married and the spouse has no income (unlocks the 60,000 THB spouse allowance)."
    },
    "isAge65OrOlder": {
      "type": "boolean",
      "default": false,
      "description": "Adds the 190,000 THB senior allowance."
    },
    "numberOfChildren": {
      "type": "integer",
      "minimum": 0,
      "default": 0
    },
    "childrenBornOnOrAfter2018": {
      "type": "integer",
      "minimum": 0,
      "default": 0,
      "description": "2nd-or-later children born in 2018 or after qualify for a doubled (60,000 THB) allowance."
    },
    "numberOfParents": {
      "type": "integer",
      "minimum": 0,
      "maximum": 4,
      "default": 0,
      "description": "Dependent parents supported (30,000 THB each, max 4)."
    },
    "socialSecurityContribution": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Annual social security fund contribution, max deductible 10,500 THB."
    },
    "lifeInsurance": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Max deductible 100,000 THB."
    },
    "healthInsurance": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Max deductible 25,000 THB."
    },
    "pensionFund": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Max deductible 500,000 THB."
    },
    "providentFund": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Max deductible 500,000 THB."
    },
    "rmf": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Retirement Mutual Fund contribution, max deductible 500,000 THB."
    },
    "ssf": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Super Savings Fund contribution, max deductible 200,000 THB."
    },
    "donations": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Charitable donations, capped at 10% of income after allowances."
    },
    "taxWithheld": {
      "type": "number",
      "minimum": 0,
      "default": 0,
      "description": "Tax already withheld by the employer this year, used to compute refund vs. amount owed."
    }
  },
  "required": [
    "annualIncome"
  ]
}

io.github.holsson95/mythaitaxes-mcp