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Income Tax Calculator API

The Income Tax Calculator API calculates detailed tax information based on income, location, and filing status using the latest tax rates.

Currently this API supports United States (including state income tax and FICA) and Canada (including provincial income tax). If you would like to see other countries added, please let us know.

Only interested in getting current and historical income tax rates? Check out our Income Tax API.

Checking API status...

/v1/incometaxcalculator GET

https://api.api-ninjas.com/v1/incometaxcalculator

Returns comprehensive tax calculations including federal, state/provincial, and FICA taxes where applicable.

Parameters

  • country  required

    2-letter country code (e.g., US, CA)

  • region  required

    State/province code (e.g., CA, NY, ON)

  • income  required

    Annual income amount

  • filing_status  required for US

    Tax filing status. Possible values: single, married (married filing jointly), married_separate (married filing separately), or head_of_household

  • deductions  optional

    Total tax deductions amount

  • credits  optional

    Total tax credits amount

  • self_employed  optional

    Set to true for self-employed tax calculations (US only)

Headers

  • X-Api-Key  required

    API Key associated with your account.

Sample Request Live Demo!

country
region
income
filing_status
https://api.api-ninjas.com/v1/incometaxcalculator?country=US&region=CA&income=100000&filing_status=single

Headers

X-Api-KeyLog in or sign up to get your API Key

Sample Response

JSON
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 { "country": "US", "region": "CA", "income": 100000, "taxable_income": 100000, "deductions": 0, "credits": 0, "federal_effective_rate": 0.17053, "federal_taxes_owed": 17053, "fica_social_security": 6200, "fica_medicare": 1450, "fica_total": 7650, "region_effective_rate": 0.05952849999999999, "region_taxes_owed": 5952.849999999999, "total_taxes_owed": 30655.85, "income_after_tax": 69344.15, "total_effective_tax_rate": 0.3065585 }

Code Examples

1 2 curl -X GET "https://api.api-ninjas.com/v1/incometaxcalculator?country=US&region=CA&income=100000&filing_status=single" \ -H "X-Api-Key: YOUR_API_KEY"

If your programming language is not listed in the Code Example above, you can still make API calls by using a HTTP request library written in your programming language and following the above documentation.