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Pure math financial primitiveFREE

Mortgage Calculator

Calculate monthly mortgage payments, total interest, and amortization schedules for any loan worldwide.

Try endpoint

Endpoints

  • POST /mortgage/calculate

Parameters

principalannual_interest_rateloan_term_yearsdown_payment

Example request

curl -X POST 'https://bountyapi.com/mortgage/calculate' -H 'content-type: application/json' -d '{"principal":200000,"annual_interest_rate":6.5,"loan_term_years":30}'

Example response

{
  "monthly_payment": 1264.14,
  "total_interest": 255089.78,
  "total_paid": 455089.78
}

Source

Calculated from standard amortization formula. No external data dependency.

Limitations

Amortization schedule returns first 12 and last 12 months to keep response compact.